(2025 EXAM) Man 10 DIV AND HYPERB SYS CERT

Question 1

1. Who can close out a CWP?

Answer 1

-Diving Officer/SDS

Question 2

Who can approve temporary alternative system alignment with adequate tag-out procedure while the rec remains open?

Answer 2

CO or designated rep

Question 3

How do you document rework in the REC log?

Answer 3

place a - after the original rec number ex.24-001-1

Question 4

How often do you audit rec logs?

Answer 4

Quarterly

Question 5

O2% greater than what % requires O2 worker qualification?

Answer 5

25%

Question 6

Valve seat tightness time and pressure?

Answer 6

30 minutes plus time to inspect at MOP

Question 7

Hydrostatic/pnuemo test?

Answer 7

1.5 times MOP. No leakage allowed

Question 8

System Drop Test all requirements?

Answer 8

->1000psi air 24 hours, 1% of initial pressure
-<1000psi air 6 hours, 5% of initial pressure
-Helium/HEOX 24 hours, 1% of initial pressure
-O2 24 hours, 0 allowable drop

Question 9

What is all rope required to have?

Answer 9

Certificate of break

Question 10

Service life of wire rope?

Answer 10

5 years

Question 11

Static test for DHS?

Answer 11

200% for 10 minutes

Question 12

Dynamic Test?

Answer 12

150% run through 3 complete cycles of operation

Question 13

What do you do with rope that has exceeded 75% of its minimum breaking strength?

Answer 13

Discard

Question 14

Replacement criteria for Wire rope?

Answer 14

6 broken wire in one rope lay length, or three broken wires in one strand lay length

Question 15

Category 1A card?

Answer 15

Corrective action must be accomplished prior to manned use of the system. Results in termination or suspension of existing certification.

Question 16

Category 1B card?

Answer 16

Corrective action must be accomplished prior to system certification.

Question 17

Category 1C card?

Answer 17

Corrective action must be accomplished prior to the date or event specified on the card to sustain certification.

Question 18

Category 1D card?

Answer 18

Corrective action must be accomplished on a specified component prior to its use, but overall system retains its certification.

Question 19

Category 2 card?

Answer 19

Corrective action is desirable, but no mandatory.

Question 20

How far out must the applicant request the SCA for an on site survey?

Answer 20

no less than 90 days prior to desired cert date

Question 21

How long can a cert extension be for?

Answer 21

normally up to 90 days

Question 22

Extensions 30 days or less can be granted via?

Answer 22

email. Longer extensions require formal approval letter from SCA.

Question 23

Who provides the SCA with all information for the initial certification of a system?

Answer 23

Project Manager (PM)

Question 24

What is MIL-STD-882?

Answer 24

Standard Practice for System Safety, provides an acceptable set of guidelines for the conduct of hazard analyses.

Question 25

Who is needed to approve a REC?

Answer 25

REC Supervisor and Diving Officer/Senior Diving Officer

Question 26

Who is needed to close a REC out?

Answer 26

REC SUP, DO/SDS and CO.

Question 27

What is a Static load test?

Answer 27

200% of operational load of the handling system held for 10 mins.

Question 28

If galvanized wire rope is used, reduce the nominal breaking strength by ___ percent to account for the effects of galvanizing.

Answer 28

10%, Unless drawn galvanized wire is used, then no reduction required.

Question 29

How often shall DHS have a static, dynamic and rated load test conducted?

Answer 29

After being installed, overhaul, not to exceed 5 years.

Question 30

Dynamic load test are what percent of the rated load of the handling system?

Answer 30

150%

Question 31

Criteria for Rated load test?

Answer 31

100% rated load, cycled through operations three times.

Question 32

Hydros are what percentage of Max operating pressure?

Answer 32

150%

Question 33

What are synthetic line eye splices pulled-tested to?

Answer 33

200% designed load.