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16 Cards in this Set
- Front
- Back
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What is the ID of an authorized breathing gas hose? |
3/8" |
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Can a gas source be used to proof test a breathing gas hose? |
No, due to the personnel hazard associated with the stored energy from the compressed gas |
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When inserting a hose barb into the hose, how much space are you required to leave between the end of the hose and fitting nut? |
A .06" +/- .03" gap |
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What pressure is used to conduct a proof test? |
Shall be conducted using twice (200%) the maximum system operating pressure. |
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What is the operating pressure for breathing air? |
250 psi |
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What is used to conduct a load test on the breathing hose? |
A 200 lb. dead weight |
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How long is the proof test conducted? |
A minimum of 10 minutes |
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How is the load test conducted? |
Hose assembly is lifted so that the 200 lb dead weight is 4-6 inches off the ground and is held there for 10 minutes. |
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After a load test is completed, what is the max "creep" allowed between the hose and fittings? |
1/16" |
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What information is shown on the tag of a satisfactory tested hose? |
- Manufacturer - Date of Manufacture - Test Activity - Test Pressure - Date |
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What is the ID of an authorized pneumofathometer hose? |
1/4" |
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What type of waterproof communication connectors are used on the umbilical? |
4-pin Marsh Marine Connectors |
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What must be done if, during assembly or repair, the D-Ring is cut and welded or otherwise altered to install the snap shackle? |
The D-Ring must be weight tested to a 500 lb static load for a minimum of 10 minutes prior to installing the D-ring and shackle assembly to the umbilical assembly |
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What seizing material must be used to seize the strength members or combined communication/ strength members to the D-ring? |
3/16" nylon cord |
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What seizing materials are used along the length of the umbilical assembly? |
- Nylon Cord - Polyken - Duct Tape - 3/16 marline |
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What intervals are used when seizing the umbilical assembly? |
- 12"-18" for the first 50' (Diver end) and last 50' (Console end) of the umbilical - The remaining length of the umbilical can be seized at intervals, as required by the user, but not to exceed 36" |
