Us Navy Dive Manual Chapter 4 Rev 6 Change A

Front 1

If a conflict arises between the documents containing the maintenance procedures for diving equipment and systems I.E. military and manufacturer’s operating and maintenance (O&M) manuals and Planned Maintenance System (PMS) Maintenance Requirement Cards (MRC), which takes precedence?

Back 1

Planned Maintenance System (PMS) Maintenance Requirement Cards (MRC)

Front 2

If a conflict arises between the documents containing the maintenance procedures for diving equipment and systems I.E. military and manufacturer’s operating and maintenance (O&M) manuals and Planned Maintenance System (PMS) Maintenance Requirement Cards (MRC) which takes precedence?

Back 2

Planned Maintenance System (PMS) Maintenance Requirement Cards (MRC)

Front 3

What if the PMS/MRC is inadequate or incorrect and what takes precedence?

Back 3

The applicable military O&M manual takes precedence. Report inadequate or incorrect PMS via a PMS feedback report in accordance with current PMS instructions.

Front 4

What if the PMS/MRC and applicable military O&M manual are inadequate or incorrect and what takes precedence?

Back 4

The manufacturer’s technical manual takes precedence. Report inadequate or incorrect military technical manual information in accordance with procedures in the affected technical manual.

Front 5

Who must be notified prior to disregarding any required maintenance procedures on certified diving equipment?

Back 5

NAVSEA or NAVFAC. Failure to do so may compromise certification

Front 6

What resources do you have to know whether you are allowed to utilize a piece of diving equipment?

Back 6

The Authorized for Navy Use (ANU) list or be an element of a certified diving system

Front 7

Who is the System Certification Authority (SCA) for all afloat and portable diving and hyperbaric systems?

Back 7

Naval Sea Systems Command Code 00C4

Front 8

Who is the System Certification Authority (SCA) for all shore-based diving and hyperbaric systems?

Back 8

Naval Facilities Engineering Command Code OFP-SCA

Front 9

Who approves operating procedures (OPs) and Emergency Operating Procedures (EPs) for all diving and recompression chamber systems?

Back 9

NAVSEA or NAVFAC and requires the Commanding Officer’s or OIC’s signature on the cover page as final review.

Front 10

Who has approval authority to make changes to diving systems OP’s or EP’s?

Back 10

NAVSEA or NAVFAC

Front 11

What are the Military Diver’s Breathing Air Standards for diver’s air compressed from ANU or certified diving system?

Back 11

Constituent Specification
Oxygen (percent by volume) 20–22%
Carbon dioxide (by volume) 1,000 ppm (max)
Carbon monoxide (by volume) 20 ppm (max)
Total hydrocarbons (as CH4 by volume) 25 ppm (max)
Odor and taste Not objectionable
Oil, mist, particulates 5 mg/m3 (max)

Front 12

May Navy diver’s breathing air may be procured from commercial sources?

Back 12

Yes

Front 13

What are the stipulations when procuring diver’s breathing air from commercial sources?

Back 13

It shall be certified in writing by the vendor as meeting the purity standards of FED SPEC BB-A-1034 Grade A Source I (pressurized container) or Source II (compressor) air. It may also be qualified for use by utilizing an ANU portable air monitor except when diving in cold water at or below 37 deg F since the portable air monitor does not measure water vapor.

Front 14

Each diver breathing-air source in service must be sampled how often for purity and contaminates?

Back 14

Approximately every 6 months (within the interval between 4 and 8 months following the last accomplishment), when contamination is suspected and after system overhaul.

Front 15

How long shall the air sample analysis report be maintained on file for each air compressor (by compressor serial number) used to produce diver’s breathing air?

Back 15

The most recent

Front 16

When sampling from HP and LP charging systems, separate samples should be taken from each compressor supplying the system. Samples from the compressors should be taken where?

Back 16

As close to the compressor as possible but down stream of the last compressor-mounted air treatment device (moisture separator, filter, etc.).

Front 17

Air samples shall be taken and returned to NSWC-PC within ____ working days of receipt of the air sample kit to preclude incurring late fees.

Back 17

5

Front 18

Can commands utilize local air sampling services vice NSWC-PC?

Back 18

Yes. Commands may use local government (e.g., shipyards, ship repair facilities, government research laboratories) or commercial laboratories to analyze diver’s air samples. Commands are required to bear the cost of locally procured air sample services. Local sampling facilities must be able to analyze to U.S. Navy air purity standards.

Front 19

What types of malfunctions or operator errors may cause contamination risk to the diver’s air supply when using oil-lubricated compressor?

Back 19

a. Excess oil mist being passed out of the compressor due to excess clearances
b. Broken parts
c. Overfilling the oil sump
d. Overheating to the point of causing combustion of the lubricating oil and/or gaskets and other soft goods found in the compressor

Front 20

What is the approved lubricant used in diver’s air compressors for normal operations?

Back 20

MIL-PRF-17331 (2190 TEP)

Front 21

What is the approved lubricant used in diver’s air compressors for cold weather operations?

Back 21

MIL-PRF-17672 (2135TH)

Front 22

Can you use synthetic based oil in diver’s air compressors?

Back 22

Yes. When the compressor manufacturer specifically recommends the use of synthetic based oil in their compressor for production of breathing air, that manufacturer recommended synthetic base oil may be used in lieu of MIL-PRF-17331 or MIL-PRF-17672 oil.

Front 23

What are the guidelines for selecting diving system gauges in regards to their range?

Back 23

Select a gauge whose full scale reading approximates 130 percent to 160 percent of the maximum operating pressure of the system. Following this guideline, a gauge with a full scale reading of 4,000 or 5,000 psi would be satisfactory for installation in a system with a maximum operating pressure of 3,000 psi.

Front 24

What protects the operator in the event of Bourdon tube failure due to overpressurization which could otherwise result in explosion of the gauge lens in many gauges?

Back 24

A case blowout plug on the rear surface. The plug must not be obstructed by brackets or other hardware.