CHAPTER 10
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-2 10.1 PURPOSE. To provide the procedures for authorization and control of shipboard work. 10.2 WORK AUTHORIZATION. Work on ship’s systems and components, as defined in volume I, chapter 1, appendix D of this manual, must be properly authorized and controlled in order to ensure rigorous personnel and ship safety standards are met at all times. All outside activity work on ship’s systems and components, regardless of who performs the work, requires formal authorization through a Work Authorization Form (WAF) for the specific work to be accomplished. This applies to all U.S. Naval ships in all types of maintenance availabilities, public and private. The Work Authorization System and preparation of the WAF are discussed Sections 10.3 and 10.4 of this chapter. For the purpose of this chapter, the term “Repair Activity” is any activity other than Ship’s Force involved in the construction, testing, inspection, repair, overhaul, refueling or maintenance of the ship. 10.3 WORK AUTHORIZATION CONTROL. Work on the Fleet’s ships is conducted under positive Work Authorization Control in order to ensure rigorous personnel and ship safety standards are met at all times. The following considerations apply in meeting these standards: a. Work requiring formal authorization may include Planned Maintenance System (PMS), troubleshooting, corrective maintenance (repair) or alterations. It may also include removal of system components for repairs. b. As many ship systems, such as hydraulic s and high-pressure air, are operationally interrelated, caution must be exercised in planning work so that other systems are not unintentionally disabled when setting work boundaries for the system to be worked. 10.4 WORK AUTHORIZATION SYSTEM. Work Authorization must be controlled. a. Designation of Work Requiring Formal C ontrol. The WAF is the vehicle by which work requiring formal control is authorized for accomplishment and tracked to completion or otherwise no longer requiring isolation or authorization. b. A WAF, shown in Appendix A 1, is required to authorize the start of work on all ship systems and equipment by activities other than Ship’s Force. Work includes all maintenance, repairs or modifications and installation or removal of temporary support systems and equipment. Repair activity non-intrusive work (e.g., painting, lagging, sheet metal work, deck plate, structural foundation not including hot work) that does not affect ship or personnel safety does not normally require a WAF. c. For Ship’s Force maintenance conducted in nuclear propulsion plants, the Engineering Department Manual contains the requirements regarding when a WAF is needed. For Ship’s Force work conducted outside the nuclear propulsion plant, the cognizant department head must determine the necessity for a WAF. d. For availabilities where a repair activ ity is assigned responsibilities for work authorization control by Memorandum of Agreement (MOA), the requirement regarding when Ship’s Force must submit a WAF must be specified in the MOA. e. For Surface Force ships only, the use of an electronic WAF (eWAF) program can be utilized if Ship’s Force has an eWAF program on the unit that fully updates and links directly to the shore database and the repair activity has access to the eWAF program or via Memorandum of Agreement per Volume II, Part I, Chapter 3, paragraph 3.3.7 of this manual.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-3
10.4.1 Administration. The following administrative process is to be used in executing Work Authorization Control: 10.4.1.1 Work Authorization Form. The WAF, shown in Appendix A1, must be filled out by the organization conducting the work, or Ship’s Force, as determined by the MOA signed for the availability per volume II, part I, chapters 3 and 4 of this manual. 10.4.1.2 Work Authorization Log or Index. The Work Authorization Log(s) or Index for Surface Force ships only, shown in Appendix A2 must be maintained at the same location and administered by the same individuals as the ship’s tagout logs or indices or, when the repair activity is assigned responsibilities for work authorization control by MOA, the repair activity must retain original WAFs with a copy of all WAFs (or as specified by local MOA) and the WAF index must be provided to Ship’s Force either by hard copy or electronically via a database that can be easily accessed by the Ship’s Duty Officers per Appendix A 2. NOTE: FOR SHIP’S FORCE GENERATE D WAFS, THE SERIAL NUMBER MUST USE THE SAME PREFIXES USED FOR THE TAGOUTS THAT SET THE SYSTEM ISOLATION FOR THE WORK. WHEN A REPAIR ACTIVITY IS ASSIGNED RESPONSIBILITIES FOR WORK AUTHORIZATION CONTROL, THAT ACTIVITY WILL SPECIFY THE SERIALIZATION PROCESS USED BY ALL ACTIVITIES INCLUDING SHIP’S FORCE FOR THE AVAILABILITY. NOTE: FOR SURFACE FORCE SHIPS ONLY: A. APPENDIX A 2 SHALL BE ESTABLISHED AS EITHER A HARD BINDER OR BY ELECTRONIC MEANS SEPARATED BY THE CATEGORIES PROPOSED, ACTIVE, TESTING AND CLOSED. B. THE ISIC SHALL CONDUC T AN AUDIT OF APPENDIX A2 PER THIS MANUAL DURING THE FIRST 15 DAYS OF A NUMBERED AVAILABILITY (CMAV, SRA, CNO TYPE AVAILABILITIES) AND EVERY 90 DAYS THEREAFTER OF MAINTENANCE PERIOD AND FINAL AUDIT POST TYCOM SEA TRIAL EVENTS. C. SHIP’S FORCE QUALITY ASSURANC E OFFICER SHALL CONDUCT WEEKLY WAF AUDIT WORKING IN CONJUNCTION WITH COMMAND TAG OUT LOG AUDITING. D. CLOSED WAFS SHALL BE RETAIN ED FOR 30 DAYS THEN TRANSFERRED TO ELECTRONIC MEANS FOR A MINIMUM OF 1 YEAR AFTER CLOSURE. 10.4.1.3 Technical Work Document Record Sheet. When the job description on the WAF covers multiple components and their associated Technical Work Documents (TWD), a TWD Record Sheet (Appendix B) in addition to the WAF may be used to document this work. 10.4.1.4 Work Authorization Form Continuation and Revision Sheets. If necessary, a WAF Continuation Sheet similar to the one shown in Appendix C may be used when information on the initial original WAF will not fit in the blocks provided in the WAF form in Appendix A1. The WAF Continuation Sheet shown in Appendix C depicts the minimum blocks that must be
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-4 filled out. Additional blocks may be utilized as deemed appropriate. Any changes necessary to the information on the WAF form after Block 14 is signed will be on the WAF Revision Sheet or changes to the existing WAF as described in paragraph 10.4.4 of this chapter. Existing WAF Continuation Sheets may be used until exhausted if desired. The WAF Revision Sheet, similar to the one shown in Appendix C, may be used to accomplish WAF revisions as permitted by paragraph 10.4.4 of this chapter. The WAF Revision Sheet shown in Appendix C depicts the minimum blocks that must be filled out. Additional blocks may be utilized as deemed appropriate. 10.4.1.5 Numbering Work Authorization Form Continuation and Revision Sheets. Revisions and continuation sheets generated by computer software may be numbered as determined by the software programming. Paper WAF continuation and revision sheets are to be numbered using the conventions of sub-paragraphs “a” through “c” of this paragraph: a. The WAF (Appendix A 1) will be identified as “Sheet 1”. b. Continuation sheets will be identi fied as “Sheet 1A, Sheet 1B”, etc. c. Revision sheets will be identif ied as “Sheet 2, Sheet 3”, etc. 10.4.2 Work Authorization Procedure. The following procedure is to be followed for properly authorizing work: a. The WAF is presented to the Watch or Du ty Officer by the division or repair activity tasked with the work. b. For Safety of Ship items, as defined in paragraph 10.4.8 of this chapter and reference (a), the Watch or Duty Officer must obtain the Commanding Officer’s permission prior to authorizing work. When assigned, the Repair Activity’s Ship Safety Officer and, or Fire Safety Officer signature is required. c. The Watch or Duty Officer will then de termine if adequate isolation and plant or system conditions exist to safely and properly conduct the work including that the system is drained, de-energized and depressurized. The tagout is then established per reference (b). The work is not to be authorized if doubt exists on either of these points. For high energy systems (i.e., >200°F, >1000 psi) that could have the potential for trapped energies, the repair activity after consulting with Ship’s Force, may provide a written plan (i.e., valve lineup, procedure, marked up drawings) to Ship’s Force to ensure all parties are satisfied the system is properly drained and depressurized. d. When system isolation and plant conditions are satisfactory to conduct the work (e.g., tagout complete, system depressurized, drained and de-energized), the Watch or Duty Officer authorizes the work and signs the WAF. For repair activity generated WAFs, the Repair Activity Representative (RAR) also signs the WAF. The Watch or Duty Officer and RAR signature indicates that, based on personal observation, certified records or direct report from watchstanders or divisional personnel, that system isolation and plant or ship conditions are set and the division or repair activity is authorized to start work. NOTE: ELECTRICAL SAFETY CHECKS (E .G., VOLTAGE CHECKS TO ENSURE CIRCUITS ARE DE-ENERGIZED) ARE PART OF THE WORK PROCESS,
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-5 NOT PART OF THE TAGOUT PROCESS, AND THEREFORE SHOULD BE PERFORMED AFTER BLOCK 14 OF THE WAF IS SIGNED. e. Some component contractor personn el who perform work on ships are not knowledgeable of ship systems and are not qualified to determine if plant or ship conditions are satisfactory to conduct work. For such cases, the contractor’s signature will be based on a direct report or briefing they receive from Ship’s Force or the Naval Supervisory Authority, unless another method of providing the information to the contractor is specified in a MOA. The contractor’s signature represents confirmation that the contractor understands the hazards presented by the ship’s systems on which they will be working, and they have received assurances the work area has been appropriately isolated, depressurized, de-energized or drained. As an alternative, the contractor may specifically agree via their contract that all repair activity responsibilities as defined in this chapter will be assigned to the Naval Supervisory Authority per paragraph 10.4.5 of this chapter. In all cases, appropriate information should be provided to the contractor prior to initiating work to ensure the contractor understands the hazards involved. A Regional Maintenance Center representative must sign MOA(s) only after ensuring all civilian contractor requirements detailed in any MOA(s) are contained within the applicable contracts. f. The original WAF is placed in the Wo rk Authorization Log and a copy must be maintained with the TWD until the work is completed. g. Once the work is completed, the WAF is signed by the repair activity as work complete and forwarded to Ship’s Force for clearing of Tagout Record Sheet line items per reference (b). h. Following completion of tes ting (if there is no formal test program) and setting of appropriate system status (e.g., clear tags and perform valve line-ups as appropriate for the situation), the WAF is signed as closed and forwarded to the cognizant department head for review. 10.4.3 Transfer of Non-Nuclear Systems and Nuclear Instrumentation and Control Systems (Depot availabilities only). During depot availabilities, large amounts of work will be performed on ship’s systems. Formal work control practices in place by a shipyard enable Ship’s Force to transfer non-nuclear systems and Nuclear Instrumentation and Control systems to the shipyard. Transfer of systems is the process by which Ship’s Force transfers the authority to approve all actions within a system or portion of a system to a shipyard and subsequent return of systems back to Ship’s Force prior to major events. Systems, or portions of systems, are transferred with or without transferring the ability to operate ship’s equipment. By transferring a system or portion of a system to the shipyard, the shipyard is responsible for authorizing all work, testing and equipment operation within the boundary transferred. Transfer of systems does not diminish a Commanding Officer’s overall responsibility for the safety of personnel, equipment and the ship. Although other activities may perform work within the boundaries and Ship’s Force normally retains responsibility for operating ship’s equipment, all actions (i.e., work, testing, equipment operations, etc.) within the boundary must be approved by the shipyard. a. The MOA between the shipyard and ship for the availability must include the following minimum attributes regarding transfers:
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-6 (1) Clearly state that all actions perf ormed within the boundary being transferred must be approved by the shipyard. (2) Normally, Ship’s Force retains respon sibility for operating ship’s equipment. If any transfers with operations are planned, the MOA must define the extent to which the shipyard will operate ship’s equipment within the boundaries. (3) Normally, Ship’s Force retains re sponsibility for PMS, unless otherwise specified in the MOA. (4) Delineate who is responsible to main tain system status within the boundary. (5) Identify the process (e.g., Joint Fl eet Maintenance Manual Volume IV, Chapter 10, paragraphs 10.2 through 10.4.5) by which work control must be administered, including interface between the shipyard, Ship’s Force and other applicable activities. b. A WAF must be used to transfer a system or portion of a system to the shipyard. Block 7 of the WAF must clearly state this intent (i.e., specify “transfer” or “transfer including operations”). Ship’s Force formally transfers a system or portion of a system to the shipyard by signing Block 14 of the WAF. Unless Block 7 of the WAF states the transfer is “including operations”, the shipyard is not authorized to operate ship’s equipment within the transferred boundary. c. The shipyard returns a system or portion of a system back to Ship’s Force by completing all authorized work and testing specified on the WAF and signing Blocks 16, 17 and 18 of the WAF. Ship’s Force indicates acceptance of the work and testing and, if applicable, operation by signing Block 18 of the WAF. For nuclear powered ships, the Engineering Department Manual contains requirements for accepting operational control from the shipyard. d. When the shipyard is responsible for ope rating ship’s equipment as specified in the transfer MOA, operation of ship’s equipment must be following shipyard or Naval Sea Systems Command (NAVSEA) procedures (e.g., test procedures, ship’s operating instructions, Steam and Electric Plant Manual, etc.). e. When waterborne, Ship’s Force must retain operation of hull and back-up valves. f. When portions of a system are required to be operational to support propulsion plant key events per NAVSEA Instruction 4730.1 and 4730.2 series, those portions of the system must be transferred back to Ship’s Force. g. Ship’s Force must have the capability to isolate the transferred area from components and systems under Ship’s Force control. The valves, switches, breakers, fuses, blanks, etc., that provide this capability must remain under Ship’s Force control. h. Any ship system which could directly a ffect the reactor plant or conduct of reactor plant testing must not be transferred to a shipyard until required nuclear temporary support systems are installed and the system is isolated from the reactor plant. i. Within the boundaries transferred to the sh ipyard, Ship’s Force must be notified prior to commencing testing and when testing is interrupted and completed.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-7 j. All transfers on submarines must be cons istent with ship’s safety requirements and reference (a). k. In order to minimize subsequent changes to the WAF and ensure that Ship’s Force is aware of the work scope, the WAF which transfers systems or portions of systems should include all known customer authorized work within the specified job description. l. This authority applies to all work pe rformed by or sub-contracted by the shipyard. m. Within the boundaries approved by the WAF, the shipyard can add additional work to the WAF without Ship’s Force approval by adding additional TWDs to a TWD Record Sheet (Appendix B) provided the additional work is within the original description of work and tagout boundaries (i.e., no additional tags are required). This method is applicable only when two independent reviews of the additional work by the shipyard confirms that the existing WAF and its associated tagout(s) provide adequate isolation and conditions for the work (see paragraph 10.4.5 of this chapter). TWDs (Task Group Instructions (TGI), Deficiency Logs, Deficiency Reports, etc.) that meet this criteria and require work control per paragraph 10.3 of this chapter will be added to the TWD Record Sheet. To ensure Ship's Force remains informed of all work being performed on ship’s systems, the shipyard must verbally notify Ship’s Force at the time work is added to the TWD Record Sheet and subsequently provide a hard copy of the changed TWD Record Sheet if it cannot be printed by the Ship’s Duty Officer from an electronic database. Work added to the TWD Record Sheet does not need to be added to the associated Tagout Record Sheet. n. When other activities perf orm work and testing within boundaries transferred to a shipyard and the shipyard is acting as their RAR, the shipyard may add the other repair activity’s work to the TWD Record Sheet. Otherwise, a separate WAF must be generated and a new line item must be added to the existing Tagout Record Sheet. o. Ship’s Force performing work, testing or equipment operations within boundaries transferred to a shipyard must prepare a separate WAF processed as described in paragraph 10.4.2 of this chapter, add a new line item to the existing Tagout Record Sheet and obtain shipyard concurrence in Block 12 of the WAF. RAR signature is not required on the Tagout Record Sheet. p. For small depot availabilities (e.g., conven tional surface ship availabilities less than six months in duration, submarine Selected Restricted Availabilities and Extended Refit Periods, Aircraft Carrier upkeeps), the provisions of this paragraph may be applied on a case basis where the amount of work on a system is extensive and warrants transferring a portion of a system. These exceptions require Type Commander approval. 10.4.4 Work Authorization Form Revisions. Changes to the scope of the existing job description or system transfer boundary must be authorized by a formal revision to the existing WAF. Except as noted for minor administrative changes, changes to conditions (i.e., Blocks 7, 8, 11, 13 or 14) established by an authorized WAF, including the associated tagout(s), also require a formal revision to the existing WAF. A formal revision to a WAF can be accomplished by either preparing a new WAF with the same number or revising the existing WAF.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-8 a. Prepare a new WAF. A new WAF with th e same number will be used primarily for major changes to Block 7, Job Description or other major changes which warrant reverification of all aspects of the work authorization. (1) A new WAF with the same number will be generated with changes included. (2) In Block 9, enter revision (REV A, REV B, REV C, etc.) the reason for, and description of the change. (3) Authorize the new WAF per th e requirements of this chapter. (4) Mark superseded WAF(s) “SUPERSE DED” and retain with the new WAF. b. Revise Existing WAF. The revised existing WAF will be used primarily for tag shifts or other minor changes. (1) Enter all required changes. Include in itials, date and revision with each entry. (2) Line-out all changed or invalidated information. Include initials, date and revision with each line-out. (3) Remake all affected signatures. (4) In Block 9, enter reason for and descri ption of the change. Sign and date the entry. (5) Obtain authorization including verifica tion of “Plant or Ship Conditions Set” by resigning Blocks 13 and 14 of the WAF. c. Revise existing WAF us ing the WAF Revision Sheet. (1) Fill in the information required by the WAF Revision Sheet, including the revision (REV A, REV B, REV C, etc.). Add additional blocks as deemed appropriate. (2) Enter the reason for and description of the change. Sign and date the entry. (3) Obtain all required signatures. (4) Once the WAF Revision Sheet has been completed, it must be maintained with the original WAF in the WAF log. d. Minor Administrative Changes to Existing WAFs. The Watch or Duty Officer or the RAR may make pen and ink changes that are editorial or administrative in nature to the original WAF without processing a new or revised WAF. These changes must not affect the scope or sequence of shipboard work, and include items such as obvious typographical errors, erroneous job order numbers or spelling errors. Either the Watch or Duty Officer or Repair Activity may make these changes on the original WAF without resigning Blocks 13 and 14. The changes must be initialed and dated by the person entering the changes. e. Iterative Tagouts. When using the refere nce (b) Iterative Tagout procedure, a revision to the WAF is not required provided the specific tests or maintenance evolutions are controlled by a formal process. This process is to be defined and concurred with by a MOA established between Ship’s Force and the Lead Maintenance Activity. The
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-9 process must ensure that isolation is re-established and system conditions verified prior to recommencing work. 10.4.5 Centralized Work Control Procedures. It is the responsibility of the Lead Maintenance Activity to determine the need for centralized work control and to assign the responsibility for work authorization control. During depot availabilities, a centralized work control team will be established. For other availabilities, this decision is based on the number of repair activities performing work during the availability and the complexity of the work. When centralized work control procedures are invoked, the following process must be used: a. Work by all repair activities is pro cessed by the centralized work control team including work covered by paragraph 10.4.3 of this chapter. Ship’s Force involvement will be defined by MOA. b. The Lead Maintenance Activity will speci fy participation and supervision of the centralized work control team by MOA. Ship’s Force is an integral part of the centralized work control team and should man the team with experienced officers or senior petty officers. c. The repair activity performing the work must prepare the WAF, sign as RAR on the Tagout Record Sheet and sign the WAF blocks 10, 14, 16 and 17 if applicable, unless specified otherwise by MOA (e.g., repair activity does not maintain qualified personnel). The Lead Maintenance Activity assigned responsibility for centralized work control is responsible for processing the WAF and signing all other repair activity blocks on the WAF. d. For work covered by paragraph 10.4.3 of this chapter, the Ship’s Force member(s) of the centralized work control team would notify the responsible Division or Work Center Supervisor and Duty Officer of added work to a TWD Record Sheet to ensure that Ship’s Force remains informed of all work being performed on ship’s systems. 10.4.6 Equipment Tagout Procedures. Tagouts must be accomplished per the requirements of reference (b). 10.4.7 Barrier Criteria. a. Barrier criteria for maintenance is locat ed in reference (b) and applicable Reactor Plant and Steam and Electric Plant manuals. NOTE: BARRIER CRITERIA REQUIRED BY REACTOR PLANT AND STEAM AND ELECTRIC PLANT MANUALS HAVE PRECEDENCE OVER REFERENCE (B) CRITERIA. b. (Submarines only) Specific guidance for hu ll penetrations is located in Appendix D. 10.4.8 Safety of Ship Maintenance Item Identification, Listing and Control. a. Safety of Ship Maintenance Item List (SOSMIL). Safety of Ship maintenance items are those evolutions having significant potential to impact the ship’s watertight integrity, damage control capability or which require special attention to ensure ship safety. NOTE: DESIGNATION OF SAFETY OF SHIP MAINTENANCE ITEMS FOR BOTH
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-10 SHIP’S FORCE AND ANY OUTSIDE ORGANIZATION IS REQUIRED WHEN FLEET MAINTENANCE ACTIVITY (FMA), INDUSTRIAL ACTIVITIES AND CONTRACTOR PRODUCTION WORK IS IN PROGRESS. REQUIREMENTS OF PARAGRAPH 10.4.8 OF THIS CHAPTER OR A SHIP’S PLAN OF THE DAY, IF REFERENCE (A) IS IN EFFECT, WILL BE IMPLEMENTED ANY TIME WORK AFFECTING SAFETY OF SHIP ITEMS IS PERFORMED REGARDLESS OF AVAILABILITY STATUS. b. Safety of Ship Maintena nce Items. The ship’s Commanding Officer’s permission is required prior to authorizing the maintenance evolution. The following, as a minimum, must be scheduled on the SOSMIL: (1) All maintenance involving si ngle closure isolation from sea. (2) All maintenance which removes a means of blowing main ballast tanks. (3) All maintenance requiring the use of flat patches, hull blanks or cofferdams, with specific entries identifying the actual installation and removal of these items. (4) All maintenance which removes the capab ility to dewater the ship using either the trim or the main drain systems. (5) All maintenance which removes the ship’s installed firefighting capability (e.g., maintenance which prevents pressurization of the trim system). (6) Bleeding or charging oxygen banks. (7) Handling or loading of explosives or weapons. (8) All maintenance which removes portions of, or the entire Emergency Air Breathing system. (9) Fueling or defueling. (10) Diver operations. (11) Pumping or fl ooding the sonar dome. (12) Per references (c) or (d), constant-v oltage or constant-current charges (elevated charge) where total battery voltage reaches or exceeds 2.45 volts per cell (VPC) and battery temperature meets or exceeds 65 degrees °F. (13) Nitrogen load. (14) Refrigerant on or off load. (15) Evolutions with an expected draft change of >3 inches (e.g., ballasting, lead load, etc.). (16) Securing the Emergency Diesel Generator. (17) Other maintenance or evolutions which require special coordination between Ship’s Force and maintenance providers to ensure safe accomplishment of authorized work (e.g., Loading Vertical Launch System Platform).
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-11 (18) All maintenance that violates the in tegrity of the pressure hull, watertight bulkhead or watertight doors, excluding the routine operations of access hatches. (19) All maintenance that disables any bilge alarm or any portion of an emergency announcing circuit when temporary alarms or indications are not installed. (20) All maintenance that secures normal or emergency lighting circuits in a compartment or space such that damage control response would be significantly impacted. NOTE: USE OF TEMPORARY SYSTEMS TO REPLACE FUNCTIONS OF SHIP’S INSTALLED SYSTEMS SHOULD BE CONSIDERED WHEN DEEMED NECESSARY. CLASS SUBMARINE ORGANIZATION AND REGULATIONS MANUALS AND SHIP SYSTEM MANUALS MAY PROVIDE FURTHER GUIDANCE. c. SOSMIL Preparation. The SOSMIL will be prepared by a person designated by the ship’s Commanding Officer using written input provided by Ship’s Force divisions and the FMA representative. A new SOSMIL will be prepared prior to the FMA Daily Production Meeting of volume II, part I, chapter 4, paragraph 4.4.11 of this manual. Appendix E of this chapter is provided as an example and depicts the minimum attributes that must be documented on the SOSMIL. Appendix F of this chapter may be reproduced locally for use. The requirements to prepare the SOSMIL are: (1) Indicate ship’s name, hull number, upkeep number, calculated maximum expected draft, actual morning draft and date prepared. (2) For each job, list the Job Control Number or WAF number (as applicable) (operating instruction, PMS item, operating procedure), job description, scheduled end date and any remarks. (3) The SOSMIL should indicate planned work for the next seven days. A thick black line must be used on the left side of the current day to indicate the current days’ work. (4) In the job description block, indicate in parentheses a number that corresponds to the list at the bottom of the sheet as to why the job requires a SOSMIL entry. (5) Items must remain listed on the SOSMIL until work has been verified complete and associated WAF has been completed or Block 11 of the WAF revised as no longer affects Safety of Ship. d. Maximum Expected Draft. For those items which will have an effect on ship’s draft, expected draft changes greater than three (3) inches will be calculated fore and aft for that evolution and indicated in the remarks section. Draft calculations will be made by a Diving Officer of the Watch qualified individual. Additionally, for all ballasting evolutions, a second independent calculation will be performed and provided by a second Diving Officer of the Watch qualified individual. The worst-case draft change for each item will be totaled to arrive at a “maximum draft” and a maximum one foot
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-12 buffer added to arrive at the “maximum expected draft”. (The ship’s Commanding Officer can decide to reduce the buffer as they desire. If Safety Draft Marks are in use, the bottom edge of the mark must match the “maximum expected draft”.) The “maximum expected draft” is listed at the top of the SOSMIL. Calculation sheets will be retained until the job is no longer carried on the SOSMIL. If the ship exceeds the “maximum expected draft”, the Duty Officer will stop the evolution, place the ship in a safe condition and notify all parties who signed the SOSMIL and the ship’s Commanding Officer. NOTE: THIS MUST IN NO WAY BE CO NSTRUED AS LIMITING ACTIONS BY THE DUTY OFFICER OR NOTIFICATION OF THE SHIP’S COMMANDING OFFICER OF SMALLER DRAFT CHANGES. ANY UNEXPECTED DRAFT CHANGE SHOULD BE THOROUGHLY INVESTIGATED AND UNDERSTOOD. e. Morning Actual Draft. The actual ship’s draft recorded each morning prior to the Daily Production Meeting. This draft will serve as a baseline value for draft changes that occur throughout the day. f. The Ship’s Force Availability Coordina tor will present the SOSMIL at the FMA daily production meeting for review and signatures. The SOSMIL will be signed by: (1) Ship’s Force (signed by a department head). Signature indicates that all evolutions that affect ballast have been identified, the form has been completed per this instruction and the correct drafts have been calculated and at least four feet of freeboard is available to all hull openings. (2) Immediate Superior In Command (ISIC ) (signed by an ISIC representative). Signature indicates that all maintenance has been identified, the form has been completed per this instruction and the draft measurements are noted. (3) Maintenance Organization (signed by appropriate senior level person of the repair activity, normally the Production Officer, as he leads the FMA Daily Production Meeting). Signature indicates all authorized Safety of Ship work items are listed. If any additional items are to be worked, a formal change to the SOSMIL will be required. g. Following review and signature, the Ship ’s Force Availability Coordinator will provide the original copy to the ship’s Duty Officer. Reproduced copies for distribution must be made from the “original document” only. Copies will be provided to: (1) Each Production Me eting attendee listed: (a) FMA Division Officers (b) FMA Repair Duty Officer or Repair Duty Chief Petty Officer (c) FMA Regional Maintenance Team Leader. They must receive enough copies to make further distribution to the FMA Duty Officers and each FMA Division Officer having work listed on the SOSMIL. (d) Supply Repair Other Vessel Officer
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-13 (e) Ship’s Force Availability Coordinator (f) ISIC Material or Squadron Representative (g) FMA Availability Coordinator (2) The ship’s Engineering Duty Officer. (3) The ship’s Below Decks Watch. (4) The ship’s Petty Officer of the Deck. (5) Naval Submarine Support Center Representative. h. SOSMIL Use and Pre-Job Briefs. None of the evolutions or maintenance specified in paragraph 10.4.8.b of this chapter must commence unless it is scheduled on the current SOSMIL. The activity performing any maintenance or evolutions listed on the SOSMIL is responsible for a pre-job brief prior to commencing work. A pre-job brief is required for all items listed on the SOSMIL and will be attended by all parties involved as desired by the Ship’s Duty Officer. 10.4.9 Ship in Dry Dock (Submarines Under Joint Fleet Maintenance Manual Controls). a. When the ship is in dry dock, Chapte r 0872 of Navy Regulations requires the closing of all valves and other openings in the ship at the end of working hours when such closing is practical. In situations where there is extensive disruption of watertight integrity, making daily closing impracticable, it is prudent to protect the dry dock, rather than the ship, from inadvertent flooding. To this end, shipyards must maintain dry docks per reference (e). b. Temporary fluid systems must be consid ered a controlled constant fluid supply provided the following conditions exist: (1) The temporary fluid supply contains tw o in-line isolation valves external to the ship between the source and the ship. (2) The two isolation valves must be loca ted to facilitate rapid isolation (e.g., close to the ship). (3) The temporary fluid system, including both off hull isolations, must be formally transferred to, including operation of, Ship’s Force. (4) The supplied ship system must be tested to the temporary system operating pressure. c. Dry dock simulated water borne conditions exist when water is introduced to the dry dock and kept at a level below that necessary to lift the vessel off the blocks. During this condition, the following minimum requirements must apply: (1) The event must be authorized on the SOSMIL, contained in section 10.4.8 of this chapter (Submarines only). (2) Hull openings must be maintained per reference (a).
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-14 (3) Seawater valves should normally be operated using ship’s systems. A temporary system may be used to operate seawater valves after obtaining Commanding Officer’s permission. (4) Ship’s dewatering capability meet s the requirements of reference (f). d. Dewatering capability. Each compartment must be capable of being dewatered at a rate of at least 200 GPM with pumping started within three minutes of the flooding being called away. Ship’s Force will demonstrate adequate dewatering capability by planning and scheduling flooding drills to be observed by the ISIC and Lead Maintenance Activity Representative at the following times: (1) Within seven days of docking a nd temporary systems being delivered. (2) Just prior to undocking, normally within 30 days. 10.5 FINAL CERTIFICATION, CLOSEOUT AND RE-ENTRY OF SUBMARINE SPACES, TANKS AND VOIDS. 10.5.1 Purpose. To establish procedures for the final certification, closeout and re-entry of submarine spaces, tanks and voids. 10.5.2 Discussion. Historically during space, tank or void closeout, a large number of diverse and inconspicuous items have been overlooked. These items have, at times, seriously degraded both material readiness and acoustic signature of submarines. This section establishes a procedure to ensure a thorough certification of all spaces prior to final closeout and provides a check-off list when re-entry is required. The check-off list or sheet is not all-inclusive. Common sense and effective use of personnel experience and knowledge must be used to ensure complete and thorough inspections. A review of references (g), (h) and (i) should be performed to determine if a formal report of unscheduled visual inspection is required to be submitted for tank and voids being entered or closed. Non-steel damping and acoustic restraining covers are not required to be painted. Accidental overspray is acceptable. Full paint out of damping restraining covers and acoustic tile covers is not the intent. If damping and acoustic tiles are painted, they must be checked to ensure that the paint will not bridge the gap between the rubber and the restraining cover more than 75% over an area. Degradation of the performance of tiles is possible. A suggested way to repair the area is to score the gap between the restraining cover and the damping tile and between the acoustic tile covers and the rubber. Previously painted serviceable tiles may remain in service. Reference (g) allows paint on piping. NOTE APPENDIX G MAY BE USED AS AN AID FOR ENTERING SUBMARINE SPACES, TANKS AND VOIDS. 10.5.3 Action. a. The Damage Control Assistant (DCA) is de signated the coordinator for the closeout of all spaces. As such, the DCA is responsible for the following: (1) Assigning responsible personnel to close out or assist in closing out specific spaces, tanks and voids. (2) Providing personnel designated to conduc t tank, void, or space closeouts with a copy of Appendices G or H as applicable.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10-15 (3) Ensuring personnel performing closeouts are aware of their responsibilities and are adequately trained. DCA must provide, by periodic notice, a list of personnel qualified to perform closeout inspections. (4) Maintaining a folder for completed copies of Appendix H. This folder will serve as a space, tank and void closeout certification record. Only the most recent copies of these Appendices are required to be retained. This folder should also include an index of all spaces, tanks and voids applicable to closeout certification and their status. (5) Keeping the Commanding Officer and th e Engineer Officer informed as to the status of closeouts and significant deficiencies noted. b. Personnel performing tank, void and space cl oseout or entry are responsible for: (1) Obtaining a copy of Appendix G and Appendix H. (2) Forwarding to the DCA completed copies of Appendix H. NOTE A REVIEW OF REFERENCES (G), (H) AND (I) SHOULD BE PERFORMED TO DETERMINE IF A FORMAL REPORT OF UNSCHEDULED VISUAL INSPECTION IS REQUIRED TO BE SUBMITTED FOR TANKS AND VOIDS BEING ENTERED OR CLOSED. c. Responsibility for Re-Entry Contro ls (REC) and final certification are: (1) In cases where entry is required to be made for production work by both Ship’s Force and FMA personnel, the FMA will be responsible for REC and Ship’s Force will be responsible for final certification closeout. (2) For cases where only FMA work is anticipated, the FMA will be responsible for REC and Ship’s Force will be responsible for final certification closeout. For the cases in which only the maintenance activity has access (e.g., waterborne entry into mud tanks or ballast tanks by divers) the maintenance activity will be responsible for final certification closeout. (3) For cases where only Ship’s Force work is anticipated, Ship’s Force will be responsible for REC and final certification closeout. 10.5.4 Applicability. All SSN, SSBN and SSGN Class submarines and FMAs.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10A-1 APPENDIX A1 APPENDIX A1 WORK AUTHORIZATION FORM 1. USS
2. SYSTEM
3. WAF NO. 4. JSN 5. DIVISION/LWC/RA 7. JOB DESCRIPTION
6. TECHNICAL WORK DOCUMENT
PREPARATION FOR WORK 8. POST WORK TESTING AS SPECIFIED: BELOW IN THE TWD NO TEST REQD FORMAL TEST PROGRAM 9. RESTRICTIONS/PRECAUTIONS/REMARKS 10. DIVISION/REPAIR ACTIVITY READY TO COMMENCE WORK. LPO/DIV OFF /RA __________________________________________________________________________ DATE___________________ AUTHORIZATION TO WORK 11. SAFETY OF SHIP YES NO RA SSO/FSO (if SPOD used) or QUALIFIED WATCH/DUTY OFFICER (if SOSMIL used) ____________ ________________________________________ DATE ____________________ 12. CONCURRENCES: _______________________ DATE _______ _________________________ DATE _______ _________________________ DATE _____ __ 13. TAGOUT REQUIRED: YES NO SYSTEM/COMPONENT IS LINED UP FOR WORK, A TAGOUT IS HUNG, VERIFIED AND SIGNED BY THE REPAIR ACTIVITY (IF REQUIRED) AND SHIP.
TAGOUT NO.____________________________ ________________________________________________ WATCH/DUTY OFFICER DATE 14. PLANT/SHIP CONDITIONS (E.G., DRAINED, DE-PRESSURIZED, DE-ENERGIZED, RESTRAINED) SET. DIVISION/RA IS AUTHORIZED TO START WORK. ________________________________________________ WATCH/DUTY OFFICER DATE ________________________________________________ REPAIR ACTIVITY DATE NOTIFICATION OF WORK COMPLETION 15. RESTRICTIONS/PRECAUTIONS/REMARKS
16. WORK IS COMPLETE LPO/DIV OFF or RA _________________________DATE __________ 17. TESTING IS COMPLETE WATCH/DUTY OFF or RA _________________DATE__________ 18. WAF CLOSED OUT RA_____________________________DATE___________ WATCH/DUTY OFF __________________________________DATE_______________ CHECK IF CONTINUED ON ANOTHER SHEET Sheet _____
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10A-2 APPENDIX A1 INSTRUCTIONS FOR COMPLETING WORK AUTHORIZATION FORM Block 1. USS: Enter name or the hull number. Block 2. SYSTEM: Enter the system noun name, abbreviation or identification number. Block 3. WAF NO.: Enter the WAF serial number. Block 4. JSN: Enter the Job Sequence Number or job order. Block 5. DIVISION, Lead Work Center (LWC) or REPAIR ACTIVITY (RA): Enter ship’s Division, LWC or repair activity Point of Contact responsible for conducting the maintenance. Block 6. TECHNICAL WORK DOCUMENT: Enter the TWD (e.g., Controlled Work Package (CWP) or Formal Work Package (FWP), Task Group Instruction (TGI)) number(s) or enter “see attached TWD Record Sheet”. If a TWD Record Sheet is used, it must be referenced in Block 6. Block 7. JOB DESCRIPTION: Enter a description of work to be performed detailed enough for the Authorizing Officer or RAR to understand the scope of the work boundary and prepare or concur in the isolation established for this work. If necessary, use of an additional Continuation Sheet per Appendix C is authorized. Description of work can contain either a description of work boundaries or a description of components (see paragraph 10.4.3a of this chapter). Block 8. POST WORK TESTING IS AS SPECIFIED: Check BELOW and identify test requirements when retest is not contained in a TWD or formal test program. Check FORMAL TEST PROGRAM if retesting will be tracked or completed in a program administered by the repair activity. If FORMAL TEST PROGRAM or NO TEST REQUIRED is checked, Block 17 is N/A. Block 9. RESTRICTIONS, PRECAUTIONS AND REMARKS (OPENING): Enter any restrictions or precautions associated with the work item. If any information is entered in this block, the person making the entry must enter name, organization and date. If necessary, use of an additional Continuation Sheet per Appendix C is authorized. Block 10. DIVISION OR REPAIR ACTIVITY READY TO COMMENCE WORK: Signature by Leading Petty Officer or Division Officer for Ship’s Force work or repair activity indicates that sufficient prerequisites are met to commence isolation for production work. Block 11. SAFETY OF SHIP: When required by paragraph 10.4.8 of this chapter, reference (a) or reference (j), check the “YES” block. For Surface Force Ships, the Watch Officer signature is required. (1) If the SPOD is used, the Repair Activity’s Ships Safety Officer (SSO) or the Fire Safety Officer (FSO) will sign concurrence. (2) If the SOSMIL is used, the qualified Watch or Duty Officer will verify that work is listed on the SOSMIL for that day and sign the block. NON-SAFETY OF SHIP WORK CONTROLS. Check NO. When safety of ship qualified RA or Ship’s Force work control personnel process their respective WAFs, they may sign concurrence for non-safety of ship maintenance. Block 12. CONCURRENCES: Concurrence signatures may be entered as necessary (e.g., nuclear or non-nuclear interface, assist work center(s), two cognizant department heads). The
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10A-3 APPENDIX A1 Authorizing Officer or RAR should define any needed concurrences by noting the concurring organization beneath the signature line in Block 12 and obtain the concurrences. Enter N/A if no concurrences are required. For Surface Force Ships, DCA or CHENG signature is required. Block 13. TAGOUT REQUIRED: If tagout is required, mark YES. When tagout is hung, enter tagout number(s) (Log Serial Number or Shift Operations Management System line item number) and Watch or Duty Officer will sign block. If no tagout is required, mark NO. Enter N/A in TAGOUT NO., and Watch or Duty Officer will sign block. Block 14. PLANT OR SHIP CONDITIONS (e.g., drained, de-pressurized, de-energized, restrained) SET, FMA, DIVISION OR REPAIR ACTIVITY ARE AUTHORIZED TO START WORK: The Watch or Duty Officer signs in all cases for authorizing the start of all work. Note any restrictions, precautions, or both, in Block 9. If Block 11 is checked YES, the Watch or Duty Officer must ensure the work of the WAF is listed on the SOSMIL or Ship’s Plan of the Day prior to authorization of the WAF. RAR signs for authorizing the start of work when the WAF is for repair activity work. Block 15. RESTRICTIONS, PRECAUTIONS OR REMARKS: Enter any general conditions (e.g., outstanding work) that may affect system restoration. If any information is entered in this block, the person making the entry must enter name, organization and date. If necessary, use of an additional Continuation Sheet per Appendix C is authorized. Block 16. WORK IS COMPLETE: A signature by Ship’s Force or the repair activity is entered when the work described in Block 7 is verified complete and tags may be cleared with any exceptions listed in Block 15. Block 17. TESTING IS COMPLETE: A signature by the activity performing the retest is entered when testing of Block 8 is completed. Block 17 is marked N/A if Formal Test Program is in effect or no test required. Block 18. WAF CLOSED OUT: When work specified in Block 7 and testing as specified in Block 8 is completed, including all exceptions listed in Block 15, repair activity signature is entered to indicate the WAF is closed out. Ship’s Force signature indicates acceptance of the work and testing and that appropriate system status has been set (e.g., clear tags and perform valve lineups as appropriate for the situation). Block 18 may be signed prior to completion of testing covered by a formal test program. A copy of the closed out WAF must be provided to Ship’s Force if the repair activity is maintaining the original WAF.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10A-4 APPENDIX A2
APPENDIX A2 WAF INDEX
WORK CENTER WAF # JSN # COMPONENT TAG OUT # (IF Req’d) S/F SIGNATURE & DATE RA OPEN SIGNATURE & DATE S/F CLOSE SIGNATURE & DATE
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10A-5 APPENDIX A2 WAF INDEX CONTINUED
WORK CENTER WAF # JSN # COMPONENT TAG OUT # (IF REQ’D) S/F SIGNATURE & DATE RA OPEN SIGNATURE & DATE S/F CLOSE SIGNATURE & DATE
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10B-1 APPENDIX B APPENDIX B TECHNICAL WORK DOCUMENT RECORD SHEET TWD RECORD SHEET SYSTEM/COMPONENT: WAF SERIAL NO. TWD LINE ITEM NO. TWD (TGI, DL, DR, CWP, FWP) BRIEF DESCRIPTION TWD AUTHORIZATION STATUS C-COMPLETED, T-TRANSFERRED X-CANCELED REMARKS 1ST CHECK (INI) 2ND CHECK & AUTH (INI) DATE AUTH
C/T/X INI & DATE
CHECK BOX IF CONTINUED ON ADDITIONAL SHEET PAGE________
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10B-2 APPENDIX B TECHNICAL WORK DOCUMENT RECORD SHEET COMPLETION INSTRUCTIONS NOTE: THE ACTIVITY US ING THE TWD RECORD SHEET MUST FILL IN ALL BLOCKS. BLOCK INFORMATION REQUIRED
SYSTEM OR COMPONENT Enter system or component. WAF SERIAL NO. Enter WAF serial number. TWD LINE ITEM NO. Enter next sequential number (1, 2, 3, etc.). TWD (TGI, DEFICIENCY LOG, DEFICIENCY REPORT, CWP, FWP) Enter TWD (e.g., TGI, Deficiency Log, Deficiency Report or other unique document identification.) BRIEF DESCRIPTION Enter brief description. 1 ST CHECK Initials of 1 st person who reviews and ensures the line item is within the WAF work description and tagout boundaries. (NOTES 1 and 2)
2ND CHECK AND AUTHORIZATION Initials of 2nd person (independent from 1st) who reviews and ensures work is within the WAF work description, tagout boundaries, that the WAF is in an authorized status and authorizes the line item. (NOTES 1 and 2)
DATE AUTH Date line item was authorized. (NOTE 1) STATUS LINE ITEM BLOCK (C/T/X)
Status of line item. (INI) & DATE Initials and date of person that verifies a line item is complete, transferred to another WAF or canceled.
REMARKS Write any pertinent info rmation (may be left blank). NOTE 1: 1 st and 2nd checks of TWD Record Sheet will be based on a review of the issued TWD. All TWDs not reviewed (i.e., left blank) at time of WAF authorization are not authorized until reviews are completed. NOTE 2: Activities which choose to use the TWD Record Sheet must track and status only the TWDs approved and executed by their activity.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10C-1 APPENDIX C APPENDIX C WORK AUTHORIZATION FORM CONTINUATION SHEET 1. USS 3. WAF NO. REV
CHECK IF CONTINUED ON ANOTHER SHEET Sheet _____
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10C-2 APPENDIX C WORK AUTHORIZATION FORM REVISION SHEET 1. USS 3. WAF NO. REV
9. RESTRICTIONS/PRECAUTIONS/REMARKS AUTHORIZATION TO WORK 11. SAFETY OF SHIP: YES NO RA SSO/FSO (if SPOD used) or QUALIFIED WATCH/DUTY OFFICER (if SOSMIL used) ____________ ________________________________________ DATE ____________________ 12. CONCURRENCES:
_______________________ DATE ______________________________ DATE _____________________________DATE ______________ 13. TAGOUT REQUIRED: YES NO SYSTEM/COMPONENT IS LINED UP FOR WORK, A TAGOUT IS HUNG, VERIFIED AND SIGNED BY THE REPAIR ACTIVITY (IF REQUIRED) AND SHIP. TAGOUT NO.____________________________ ____________________________________________ WATCH/DUTY OFFICER DATE 14. PLANT/SHIP CONDITIONS (E.G., DRAINED, DE-PRESSURIZED, DE-ENERGIZED, RESTRAINED) SET. DIVISION/RA IS AUTHORIZED TO START WORK. ____________________________________________ WATCH/DUTY OFFICER DATE ____________________________________________ REPAIR ACTIVITY DATE CHECK IF CONTINUED ON ANOTHER SHEET Sheet _____
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10D-1 APPENDIX D APPENDIX D BARRIER CRITERIA FOR HULL PENETRATIONS 1. SYSTEMS WHICH PENETRATE THE HULL. Commanding Officers will review tag-outs and work procedures for systems which penetrate the hull to the detail considered necessary for safety. Any required work or testing which violates the requirements of this appendix should not commence without prior specific approval of the Commanding Officer. 2. HULL PENETRATIONS BELOW THE WATERLINE. The principle of double closure applies to all hull penetrations except for those mechanical and electrical penetrations (such as the secondary propulsion motor shaft and cable penetrations) which are designed for single closure. Double closure is accomplished by using installed valves, blank flanges, outside closure plates, shaft seal inflatable boots, or shaft seals. Positive control must be exercised by Ship’s Force to maintain closure through the use of danger tags and interlocks, gagging devices, chains, mechanical locks, hydraulic locks, blanks etc., until the work, including the required testing, on the associated system has been completed. a. Single closure can be used only with the specific permission of the Commanding Officer. If single closure is approved, the barrier must be verified by a satisfactory leak check of the single closure before opening the system for maintenance as listed in sub-paragraphs (1) through (3): (1) The system should be isolated using the single closure barrier. (2) If the system has not been drained, open the closest system high-point vent to conduct a controlled leak check of the single closure. (3) If the system has been drained, open the closest low-point drain to conduct a controlled leak check of the single closure. b. Prior to undocking: (1) If undocking becomes necessary prior to completing all sea connected system maintenance and testing, obtain double closure through reassembly, then satisfactorily hydrostatic test all pressure boundary joints outboard of the backup valve seat and verify the integrity of the hull and backup valve seats by performing a hydrostatic seat leakage check of both valves. (2) Where schedule, resources or other constraints prevent accomplishment of the requirements of sub-paragraph b(2) at the time of undocking, a blank flange(s) must be installed, tested and identified external to the hull penetration to provide double closure. This condition must be identified both internally and externally to prevent inadvertent removal. The installation of the blank flange must be approved by the Commanding Officer. Removal of these blank flange(s) must not commence until the required valve(s) and associated local Valve Position Indicator(s) have been reinstalled and tested to support removal of the blank and blank removal has been approved by the Commanding Officer. 3. HULL PENETRATIONS ABOVE THE WATERLINE. These penetrations or openings will also be protected by double closure or as listed in sub-paragraphs “a” and “b”:
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10D-2 APPENDIX D NOTE: THE DETERMINATION OF LESS THAN OR GREATER THAN FOUR FEET FROM THE WATERLINE WILL BE DETERMINED BY A MEASUREMENT FROM THE LOWEST LIP OF OPENINGS IN A PENETRATION TO THE ACTUAL WATERLINE. a. Hull penetrations less than f our feet above the waterline. (1) Cofferdams must be installed ar ound all open hull access openings, including temporary hull cuts, which have less than four feet of freeboard at the opening. Cofferdams must be constructed and tested per reference (a) to maintain watertight integrity to at least four feet above the waterline. A hull opening such as an electrical cable penetration need not have a cofferdam installed if it is adequately blanked or plugged while the system is under repair. Cofferdams will be designed to permit personnel access, temporary services and equipment shipping, as applicable, without violating the required watertight integrity. The ship’s topside freeflood structure may be used to achieve the four-foot requirement, however, the opening must be controlled in the same manner as a cofferdam. Positive control to maintain closure through the use of danger tags, and gagging devices, mechanical locks or blanks must be exercised for all hull access openings not in an as-built condition. Removal or changes in status must be approved by the Commanding Officer. (2) Other penetrations or openings whic h do not meet this criteria or which cannot be isolated by some type of single closure will be attended at all times by personnel with access to equipment capable of securing flooding, should it ever occur. Exceptions require specific permission of the Commanding Officer. Single closure may be affected by any suitable temporary watertight closure. b. Hull penetrations greater than four feet above the waterline. Penetrations or openings not in their normal as-built condition are not required to be watertight but should be provided with protection against unwanted fluid entry. 4. INADVERTENT OPERATION OF HYDRAULIC ACTUATORS. For those conditions when the ship is waterborne with a hull or backup valve below the waterline installed but the associated inboard piping is not complete and the hull or backup valve hydraulic actuator lines are disconnected, the following guidance is provided for reconnecting the hydraulic actuators (which may cause valve movement): a. If an external blank flange is inst alled, any additional precautions should be determined by the Commanding Officer. b. If an external blank flange is not inst alled, then the hull and backup valves should be installed, hydrostatically tested and local valve position indication proven correct and reliable. Additional safety precautions such as not working the actuators for a particular hull and backup combination concurrently, shutting and danger tagging both valves at all times, isolating and danger tagging the hydraulic pressure source to the control valve for the specific actuator being worked and not pressurizing or operationally testing the actuators until the seawater system integrity has been
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10D-3 APPENDIX D reestablished, should be employed to provide the additional assurance required to preclude the need for an external blank. 5. INSTALLATION OF HULL FITTINGS OR FLANGES. When maintenance is to be performed which requires a hull fitting or flange to be installed, the following actions will be taken: a. Ship’s Force will identity the hull opening by noun name, docking plan number, frame number, side and distance off centerline and item number (as obtained from the ship’s docking plan) and provide this information to the FMA. b. The FMA planning division will verify the data provided by Ship’s Force and calculate the circumferential distance from the centerline. c. The FMA LWC will provide the verified da ta and the fitting or flange, including the required installation hardware, to the diving supervisor. d. Ship’s Force must mark the fitting lo cation using a weighted and marked line, referenced from frame marks topside. e. The Ship’s Duty Officer must authorize the installation of the fitting or flange and coordinate the pre-brief for the installation evolution. As a minimum, the brief must be attended by the Ship’s Duty Officer, LWC Supervisor and Diving Supervisor. The mechanism for authorizing the hull blank installation must be the Work Authorization Form (Appendix A1), per this chapter. f. The divers, in conjunction with Ship’s Force and the LWC Supervisor must verify the location of the hull opening and weighted or marked line prior to the divers entering the water. g. A diver accompanied by Ship’s Force must tap on the internal hull opening until the in-water diver acknowledges the location by returning the signal except where permanent markings identifiable by a diver uniquely identify a specific hull fitting or penetration (markings such as a fitting name or number welded as raised characters on or adjacent to the fitting or penetration). h. After installation, the hull fitting or flange location and installation must be independently verified by a second diver. i. Divers, assisted by the LWC and Ship’s Fo rce, must verify the hull fitting or flange integrity with a 100-psig air test. j. Divers and the LWC Supervisor must ma rk the hull fitting or flange by attaching a tether from the fitting or flange to topside. At the topside attachment point, the tether must be labeled “Hull Fitting (Noun Name) Installed”. k. Positive verification from inboard of the hull fitting or flange placement and integrity must be achieved for each installed fitting or flange prior to proceeding with any maintenance. The verification must be accomplished using the method for testing a single closure described in paragraph 2.a of this Appendix. If either of the leak check methods of paragraphs 2.a.(2) or (3) of this Appendix are not possible, the Commanding Officer must be notified and give specific permission for continuing or conducting the maintenance.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10D-4 APPENDIX D l. If internal verification of hull fitting or flange integrity is not possible due to system configuration, the fasteners must not be fully removed from the pressure boundary being disassembled until the system is fully drained and hull fitting or flange integrity has been verified. m. If a hull fitting or flange is left installed for system or at sea operations, the guidance of Volume V, Part I, Chapter 8 of this manual concerning Departure From Specification must be followed. 6. REMOVAL OF HULL FITTINGS OR FLANGES. Prior to removal, divers, in conjunction with Ship’s Force, must verify the label of the tether of the fitting or flange to be removed and check for the presence of danger or caution tags. The divers must then follow the tether to the fitting or flange to ensure the removal of the correct fitting or flange. 7. BULKHEAD VENTILATION VALVES. Bulkhead ventilation valves must either be operational and capable of being shut or made water tight with a blank. Bulkhead penetrations must either be in their normal condition or be rendered watertight if unattended. Temporary closures are permitted. 8. FABRICATION OF NON-NUCLEAR PIPING BLANKS. For fabrication of non-nuclear piping blanks to be used during hydrostatic testing and maintenance on submarine piping systems, the following general guidelines apply: a. The material must be the identical type , level and pedigree required for the system application per reference (k) or as required by NAVSEA drawings. b. Blanks must be constructed such that th e design sealing surface dimensions and fit-up characteristics of the system are maintained. c. Dimensions of blanks will be per reference ( k). d. Applicable hydrostatic strength and poros ity testing will be performed as required by system test pressure drawings. e. All blanks must be marked per reference ( k). Maximum allowable pressure will be the hydrostatic test pressure (e.g. 6750 psi for a 4500-psi application, 4500 psi for a 3000- psi application, etc.). Additionally, mark piece with nominal operating pressure and material used. Ensure pressure markings are annotated “MAX” and “NOM” as appropriate. f. Blanks installed for maintenance or testi ng will be identified by a plain tag stating the purpose of the blank. This tag will be in addition to any danger tags used.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10E-1 APPENDIX E APPENDIX E SAFETY OF SHIP MAINTENANCE ITEM LIST EXAMPLE Ship name: USS Bigcity Hull #: SSN-799 Upkeep #: 802 Maximum expected draft: Fore: 32’0” aft: 34’6” Actual Morning Draft: Fore: 32’0” aft: 32’0” Date Wednesday prepared: 23 SEP 98 NOTE: THE MAXIMUM EXPECTED DRAFT MUST IN NO WAY BE CONSTRUED AS LIMITING ACTIONS BY THE DUTY OFFICER OR NOTIFICATION OF THE SH IP’S CO OF SMALLER DRAFT CHANGES. ANY UNEXPECTED DRAFT CHANGE SHOULD BE THOROUGHLY INVESTIGATED AND UNDERSTOOD. JCN/ WAF # Job Description Reason on SOSMIL Days work planned 28 29 23 24 25 26 27 Mon Tue Wed Thurs Fri Sat Sun Scheduled end date Remarks EA01- 2345/ WAF # TD-101 repair (1,3) testing Remove flange 24SEP98 Restoration in progress
EM01- 3456/ WAF # Divers: inspect screw for fouling (2,10) B r i e f 0830 23SEP98
WQ01- 1986/ WAF # Inspect sonar dome/ (11) P u m p down dome, brief 0830 23SEP98 Draft change expected: 1’ up fore 1.5’ down aft EA01- 3509/ WAF # TD-1 ball/seat repair (4,5) Trim system restored Stage temp firefightin g Testing 28SEP98 Valve worked in place; temporary firefighting capability staged WK01- 4568/ WAF # Off-loading countermeasures (7) Off-load 25SEP98 through weapons shipping hatch
EA01- 3525/ WAF # LP Blower MRC M-2, change oil on LP Blower (2) Down for 1 hour at 1300 28SEP98
The following items are Safety of Ship: 1. Single closure from sea 8. EAB system maintenance 15. Refrigerant on/off load 2. MBT blow removed 3. Belly bands, hull blanks, cofferdams 9. Fueling or defueling 10. Diver operations 16. Evolutions with an expected draft change of >3 inches (e.g., ballasting, lead load, etc.) 4. Dewatering ability removed 11. Pumping or flooding sonar dome 17. Securing the Emergency Diesel Generator 5. Firefighting capability removed 12. Special coordination betwee n S/F and FMA 18. Pressure hull watertight bulkhead/doors maintenance 6 Bleeding charging Oxygen banks 7. Weapons handling 13. Per references (c) or (d), constant-voltage or constant-current charges (elevated charge) where total battery voltage reaches or exceeds 2.45 VPC and battery temperature meets or exceeds 65 degrees ℉. 19. Bilge alarm/emergency announcing circuit maintenance 20. Normal/emergency lighting maintenance 14. Nitrogen load Review and approval (all parties must sign): ISIC Rep: FMA Rep: Ship’s Force DH:
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10F-1 APPENDIX F APPENDIX F SAFETY OF SHIP MAINTENANCE ITEM LIST 1. Ship name: Hull #: 2. Upkeep #:
3. Maximum expected draft: Fore: aft: 4. Actual Morning Draft: Fore: aft: 5. Date prepared: NOTE: THE MAXIMUM EXPECTED DRAFT MUST IN NO WAY BE CONSTRUED AS LIMITING ACTIONS BY THE DUTY OFFICER OR NOTIFICATION OF THE SH IP’S CO OF SMALLER DRAFT CHANGES. ANY UNEXPECTED DRAFT CHANGE SHOULD BE THOROUGHLY INVESTIGATED AND UNDERSTOOD. 6. JCN/WA F # 7. Job Description Reason on SOSMIL 8. Days work plan: Enter description or item # (1-20) that impacts Safety of Ship during the next seven days. Examples include but are not limited to Hang Diver Tags, Testing, Fuel on-load or off- load, Install Flange, Remove Flange, System Restoration, Install Temp System, etc. ___ ___ ___ ___ ___ ___ ___ Mon Tue Wed Thurs Fri Sat Sun 9. Scheduled end date 10. Remarks
The following items are Safety of Ship: 1. Single closure from sea 8. EAB system maintenance 15. Refrigerant on/off load 2. MBT blow removed 3. Belly bands, hull blanks, cofferdams 9. Fueling or defueling 10. Diver operations 16. Evolutions with an expected draft change of >3 inches (e.g., ballasting, lead load, etc.) 4. Dewatering ability removed 11. Pumping or flooding sonar dome 17. Securing the Emergency Diesel Generator 5. Firefighting capability removed 12. Speci al coordination between S/F and FMA 18. Pr essure hull watertight bulkhead/doors maintenance 6 Bleeding charging Oxygen banks 13. Per references (c) or (d), constant-voltage or constant-current charges (elevated charge) where total battery voltage reaches or exceeds 2.45 VPC and battery temperature meets or exceeds 65 degrees ℉ 19. Bilge alarm/emergency announcing circuit maintenance 7. Weapons handling 14. Nitrogen load 20. Normal/emergency lighting maintenance Review and approval (all parties must sign): ISIC Rep: FMA Rep: Ship’s Force DH:
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10G-1 APPENDIX G APPENDIX G PROCEDURES AND SAFETY PRECAUTIONS FOR ENTERING SUBMARINE SPACES, TANKS AND VOIDS NOTE: IN ADDITION TO THE PRECAUTIO NS NOTED IN THE STEPS OF THIS APPENDIX, SHIP’S FORCE MUST COMPLY WITH SAFETY PRECAUTIONS IDENTIFIED IN REFERENCES (L) THROUGH (Q). 1. Prior to entry into any free-flood area or main ballast tank, check with the Engineering Duty Officer to ensure radiological surveys have been conducted to determine the radiological controls, if required. 2. Verify REC requirements, if any. 3. Obtain permission from the Duty Officer prior to entering any tank. 4. Ensure atmosphere surveys have been completed and adequate ventilation is available prior to entering the tank. 5. Obtain the necessary tools and equipment (i.e., rubber mallet, explosion proof flashlight or drop light, hardhat, wrenches, screwdrivers, etc.) required to enter or close out the space, tank or void. 6. Wear a hard hat when entering any Main Ballast Tank or free-flood area. 7. Use the buddy system with one man extern al to the tank or void at all times. 8. No smoking in any tanks or voids. Do not carry any naked lights or sparking electrical apparatus. Ensure all droplights are inspected and approved by the Electrical Division. 9. While inside the tank, make maximum use of la dders and walkways provided. Do not step on valves and piping. 10. Ensure positive measures are taken to identify the access to the tank or void to be opened (ship’s plans, two-man check, label plate identification). 11. Ensure all system penetrations to the tank or void are isolated and all sources of potential pressurization danger tagged out per reference (b), to include gravity drain funnels, and the tank or void is vented to the atmosphere. 12. Ensure the tank or void fasten ers are loosened to permit breaking the gasket seal. Remove fasteners only after the seal has been broken. 13. Use lanyards on tools and teth ered sealable parts pouches. 14. Prior to entering a tank or void, remove all unn ecessary items from your person (i.e., combs, lighters, wallets, etc.). 15. Take an inventory of all tools and materials which entered the tank or void. Have a second person verify the inventory before and after each entry. 16. A rubber mallet should be used to inve stigate for sound shorts, rattles, etc.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10H-1 APPENDIX H APPENDIX H CLOSE-OUT INSPECTION CHECK-OFF LIST Name of tank, void or space _______ DESCRIPTION PETTY OFFICER/ OFFICER INITIAL 1. PAINT a. Area does not have evidence of gros s preservation system failure. (Note 1)
b. Zincs, transducers and hydrophones are not painted. 2. FRAMEWORK AND FOUNDATIONS a. Inspect space framing and she ll welds for visual defects. b. Ensure nuts are lock-tight type or lock wired and screw engagement allows for at least one thread protrusion.
3. PIPING a. Inspect all pipes for visual weld or s il-brazed joint defects. Ensure pipe walls have not been cut by grinding, denting, or struck or burned by welding equipment.
b. Check pipe penetrations for properly installed sleeves and weld fillets. c. Pipe hangers should: - prevent vibration when pipe is struck with mallet. - have studs and nuts painted. - have proper insulation between pipe and hanger. - have stud nuts lock wired or locking cabled or have self-locking nuts used as required.
d. If blanks have been in stalled and will remain in-place following a preliminary closeout inspection, ensure the configuration has been evaluated for impact on ship conditions, system operation and are properly tracked to ensure removal during the final closeout inspection.
4. TRANSDUCERS, HYDROPHONES , CABLES AND CABLE WAYS a. Ensure all rubber elements are not gouged, cut, or scraped. Ensure rubber elements are not painted in the following areas: submarine reserve feed water tanks and hangers on nuclear piping.
b. Ensure all sonar transducers and hydrophones and corresponding cables are installed per ship’s plans.
c. Ensure only CRES banding and rubber channel insulation is used on cableways.
d. Ensure cableways and cable are properly supported. e. Ensure electrical coami ngs are made and tight. f. Ensure cable loop boxing covers (at hull fittings) are installed with appropriate plastic spacers such that vibration does not occur when struck with a mallet.
g. Ensure electrical hull penetr ations are properly labeled. 5. BAFFLE PLATES AND SO UND DAMPENING TILES a. Sound dampening tiles are the pr oper type per reference (m). b. Tiles are not cut, gouged or loosely secured. c. Baffle plates are properly bolted such that they are free from vibration when struck with a mallet.
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COMUSFLTFORCOMINST 4790.3 REV D CHG 3 07 Nov 2023 IV-10H-2 APPENDIX H DESCRIPTION PETTY OFFICER/ OFFICER INITIAL 6. MECHANISMS a. Dynamic mechanisms are installed, hooked up and unpainted, with no evidence of damage or scraping of components.
b. Tank level floats, if applicable, are free to operate and have no visual defects. c. Grease lines, if applicable, are insta lled properly with mechanical fittings tight and no evidence of leakage.
7. VENTS AND DRAINS a. Adequate draining exists from each bay. b. Vents are clear of loose gear and rags. c. Ensure that vents or drains have no installed blanks. 8. GALVANIC PROTECTION a. Zincs are properly located and insta lled such that vibration does not occur when struck with a rubber mallet.
b. (Galvanic protection) Mounting straps and bolts are not required to be painted. c. Surfaces behind zincs are properly pain ted. Sacrificial anode surfaces must not be painted. Sacrificial anode surfaces must not have any coatings, sealants or fairing compounds added to the backside unless approved by NAVSEA. Painting of anode straps and hardware is recommended for all sacrificial anode applications. Coatings for zinc anode straps and hardware may be omitted due to galvanizing of the strap. Painting of aluminum anode straps and hardware is required for all alternate immersion applications (e.g., Main Ballast Tanks or bilges).
9. CLEANLINESS a. Check space clear of loose gear and rags. b. Check space clean and free of dirt. 10. COMPLETION a. All interior inspection items are clear of any discrepancies. b. Take an inventory of all tools and materials that entered the tank or void. Verify all items carried into the tank or void have been removed.
c. All personnel are clear of the tank or void. d. Tank or void cover gasket and gasket seat areas are in acceptable condition. e. Tank or void cover studs and nuts are torqued to the specified values required and the lock tabs are properly engaged or spot-welded.
f. Inspect the exterior for incomplete work that would require a reinspection. g. Ensure that all temporary services are removed from tank. NOTE 1: If evidence of gross preservatio n system failure exists, then a qualified preservation system inspector must be contacted to confirm that the preservation system meets the requirements _______________________________ ________________ Signature of Senior Enlisted Inspector Date _______________________________ ________________ Signature of Officer Inspector Date _______________________________ ________________ Reviewed by DCA Date
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COMUSFLTFORCOMINST 4790.3 REV D 16 Oct 2019 IV-11-1 VOLUME IV CHAPTER 11 TECHNICAL DATA AND INFORMATION MANAGEMENT REFERENCES. (a) TL130-A1-HBK-010 MSC Procedures Manua l - Maintenance Support Center Library Procedures Manual (b) COMNAVAIRFORINST 4700.23 - Aircraft Carrier Maintenance Support Centers (MSC) Policy and Procedures (c) NAVSUP P2003 - Navy Stock List of Forms and Publications (d) SECNAVINST 5510.36 - Department of the Navy Information Security Program Regulation (e) NAVSEA S8800-00-GIP-000 - NAVSEA Guidance Handbook for Intermediate Maintenance Activity Technical Library Personnel (f) NAVSEA S0005-AG-GYD-010 - Technical Manual Users Quick Reference Guide (g) SECNAVINST 5510.30 - Department of the Navy Personnel Security Program (h) NAVSEA SL720-AA-MAN-030 - Na vy Modernization Program (i) NAVSEA S9040-AC-IDX-010 - Ships 3-M Reference Information CD (j) NAVAIR 00-25-100 - Naval Air Syst em Command Technical Manual Program (k) NAVSEAINST 4160.3 - Technical Manual Management Program (l) NAVSEA S0005-AA-PRO-010/TMMP - NAVS EA Technical Manual Management Program Operations and Life Cycle Support Procedures (m) NAVSEAINST 9210.29 - Nuclear Powered Ships and Prototypes - Responsibilities of Holders of Reactor Plant and Related Manuals (n) NAVSEA S9086-CV-STM-010 - Naval Ship’s Technical Manual Chapter 086 Command Technical Manual Management 11.1 PURPOSE. This chapter defines the responsibilities with respect to the management of technical documentation and data and requires the establishment and operation of technical libraries. Unless otherwise noted, Aircraft Carriers are governed by references (a) and (b). Technical data and information are critical for the proper operation, maintenance, troubleshooting and repair of all plant equipment. Improper maintenance or equipment remaining not repaired and inoperative can result from a lack of proper documentation in the form of technical manuals, ship’s drawings and blueprints, Military Specifications and standards, etc. 11.2 SHIPBOARD TECHNICAL DOCUMENT MANAGEMENT. Ships must maintain the Advanced Technical Information Support (ATIS) System up to date. ATIS updates are mailed out to the ship on Compact Disks (CD or DVD). Ship technical document distribution is based on configuration and therefore relies upon the Configuration Data Managers Database - Open Architecture being maintained up to date to accurately assign documents to the ship. To ensure ships maintain up to date technical documents, the following requirements must be met: a. The ship must assign a senior Petty Offi cer (E-6 or above) as the Technical Librarian who will maintain the ATIS systems up to date under the supervision of the 3M Systems Coordinator. Assignments as a Technical Librarian should be for a minimum