General Information

4-2.1 Document Precedence. If a conflict arises between the documents containing the maintenance procedures for diving equipment and systems, the following actions are required:

1. PMS/MRC takes precedence.

2. If PMS/MRC is inadequate or incorrect, the applicable military O&M manual takes precedence. Report inadequate or incorrect PMS via a PMS feedback report in accordance with current PMS instructions.

3. If PMS/MRC and applicable military O&M manual are inadequate or incorrect, the manufacturer's technical manual takes precedence. Report inadequate or incorrect military technical manual information in accordance with procedures in the affected technical manual.

Call NAVSEA or NAVFAC prior to disregarding any required maintenance procedures on certified diving equipment. Failure to do so may compromise certification.

4-2.2 Equipment Authorized For Navy Use (ANU). Diving equipment used to conduct diving operations shall be authorized for use by NAVSEA/00C Diving Equipment Authorized For Navy Use (ANU) list or hold a current NAVSEA or NAVFAC system safety certification certificate. Naval Sea Systems Command (Code 00C3B), Supervisor of Diving is the cognizant authority for the NAVSEA/00C ANU list. Surface supplied diving systems, hyperbaric chamber systems, and selected free swimming scuba underwater breathing apparatus shall be certified in accordance with U.S. Navy Diving and Manned Hyperbaric System Safety Certification Manual (SS521-AA-MAN-010).

The publication for Continuation of Certification Handbook For U.S. Navy Diving Systems, (SS521-AB-HBK-010) also provides information concerning maintaining system certification.

4-2.3 System Certification Authority (SCA). Naval Sea Systems Command Code 00C4 is SCA for all afloat and portable diving and hyperbaric systems. Naval Facilities Engineering Command Code 00CE is SCA for all shore-based diving and hyperbaric systems. Naval Sea Systems Command Code 92Q is SCA for submarine-employed Dry Deck Shelters and one atmosphere diving systems.

4-2.4 Planned Maintenance System. Diving equipment shall be maintained in accor dance with the applicable PMS package. Failure to maintain equipment in accordance with current PMS guidance reduces the equipment reliability and may void the system safety certification for formally certified systems.

4-2.5 Alteration of Diving Equipment. Diving equipment shall not be modified or altered from approved configuration unless prior written approval has been granted by the applicable diving equipment technical program manager.

4-2.5.1 Technical Program Managers for Shore-Based Systems. Alterations for shore-based systems are managed by Naval Facilities Engineering Command (Code 00CE), who is the cognizant technical authority for the development and approval of alterations to shore-based systems.

4-2.5.2 Technical Program Managers for Other Diving Apparatus. The technical program managers for other diving apparatus are:

■ Dry Deck Shelter - NAVSEASYSCOM (PMS 395)

4-2.6 Operating and Emergency Procedures. Operating procedures (OPs) are detailed check sheets for operating the diving system and for performing various system-related tasks. All diving and recompression chamber systems shall be operated in accordance with a set of NAVSEA or NAVFAC approved operating procedures (OPs) and Emergency Operating Procedures (EPs) and requires the Commanding Officer's or OIC's signature on the cover page as final review.

4-2.6.1 Standardized OP/EPs. Standardized diving equipment such as the Light Weight MK 3 Surface Supplied Diving System, Transportable Recompression Chamber System (TRCS), and class-certified equipment such as the MK 16 and MK 25 Underwater Breathing Apparatus shall be operated per a single set of standardized OP/EPs that are included as part of the system O&M Manual.

Proposed changes/updates to OP/EPs for standardized diving equipment shall be submitted as a formal change proposal to the respective O&M Manual in accordance with directions contained therein.

4-2.6.2 Non-standardized OP/EPs. Diving and diving support equipment such as ships, small boats, and unique shore facility surface supplied diving and recompression chamber systems shall be operated in accordance with a single set of standard OP/ EPs that are developed at the command level and approved for use after validation by NAVSEA Code 00C3 or NAVFAC Code 00CE. Proposed changes/updates to OPs/EPs for non-standardized diving equipment shall be submitted to the applicable approval authority. The following addresses are provided to assist in submitting proposed OP/EP changes and updates.

Submit proposed OP/EP changes and updates for afloat, portable diving and recompression chamber systems, and class-certified equipment to:

COMNAVSEASYSCOM (Code 00C3) 2531 Jefferson Davis Highway Arlington, VA 22242-5160

Submit proposed OP/EP changes and updates for fixed, shore-based facilities to:

NAVFAC (Code 00CE) Washington Navy Yard 901 M Street SE, Bldg. 212 Washington, DC 20374-5054

4-2.6.3 OP/EP Approval Process. Submission of OPs/EPs for approval (if required) must precede the requested on-site survey date by 90 calendar days to allow complete review and resolution of questions. Follow these procedures when submitting OPs/EPs for approval:

The command shall validate in the forwarding letter that the OPs/EPs are complete and accurate.

The command must verify that drawings are accurate. Accurate drawings are used as a guide for evaluating OPs/EPs. Fully verified system schematics/ drawings with components, gas consoles, manifolds, and valves clearly labeled shall be forwarded with the OPs/EPs.

Approved OPs/EPs shall have the revision date listed on each page and not have any changes without written NAVSEA/NAVFAC approval.

The command shall retain system documentation pertaining to DLSS approval, i.e., PSOBs, supporting manufacturing documentation, and OPs/ EPs.

4-2.6.4 Format. The format for OPs/EPs is as follows:

■ System: (Name or description, consistent with drawings)

■ Step, Component, Description, Procedure, Location, Check, Note (read in seven columns)

■ System: High Pressure Air

■ Step/Component/Description/Procedure/Location /Initials /Note

1. ALP-15/Reducer outlet/Open/Salvage Hold/Initials/Note

2. ALP-GA-7/Reducer outlet/Record Pressure/Salvage Hold/Initials/Note 1

The operator executing the procedure shall initial the Check column. Hazards and items of particular concern shall be identified in the Note column.

Once NAVSEA or NAVFAC has approved the system OP/EPs, they shall not be changed without specific written approval from NAVSEA or NAVFAC.

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