CMC Maritime Safety Regulations & Compliance 2

Question 1

Under 29 CFR 1910.146, which condition classifies a vessel tank as a 'permit-required confined space'?

Accepted Answer

It contains a hazardous atmosphere or engulfment hazard

Answer

A permit-required confined space under OSHA 29 CFR 1910.146 is one that contains or has potential to contain a serious hazard such as a hazardous atmosphere or engulfment material.

Question 2

Which USCG regulation requires a Marine Chemist certificate before hot work can be performed on fuel tanks aboard vessels?

Accepted Answer

46 CFR Part 35

Answer

46 CFR Part 35 governs inspection of tankships and requires a Marine Chemist certificate for hot work on fuel tanks and adjacent spaces.

Question 3

When a Marine Chemist issues a 'Safe for Hot Work' certificate, what must the attending worker do if conditions change significantly?

Accepted Answer

Immediately stop work and recontact the Marine Chemist

Answer

If conditions change materially after a certificate is issued, work must cease and the Marine Chemist must be recalled to reassess the space.

Question 4

NFPA 306 defines the maximum allowable oxygen concentration for a 'Safe for Workers' atmosphere in a confined space as:

Accepted Answer

19.5% to 23.5%

Answer

NFPA 306 specifies that oxygen concentrations must be between 19.5% and 23.5% for a space to be certified Safe for Workers.

Question 5

Which document serves as the primary NFPA standard specifically governing control of gas hazards on vessels?

Accepted Answer

NFPA 306

Answer

NFPA 306, 'Standard for the Control of Gas Hazards on Vessels,' is the primary document Marine Chemists use for vessel gas hazard assessments.

(CMC) Certified Marine Chemist Practice Test

(CMC) Certified Marine Chemist Practice Test

CMC Maritime Safety Regulations & Compliance 2