Tanker Familiarization Tanker Safety and PPE 2 — Questions and Answers
Question 1: Which type of respirator is required when entering a tanker cargo tank with an oxygen-deficient atmosphere?
- Half-face air-purifying respirator
- Self-contained breathing apparatus (SCBA) (Correct answer)
- Dust mask with P100 filters
- Powered air-purifying respirator (PAPR)
Correct answer: Self-contained breathing apparatus (SCBA)
An SCBA supplies its own air and is mandatory for oxygen-deficient or immediately dangerous to life or health (IDLH) atmospheres.
Question 2: What is the primary purpose of a safety harness worn during tanker cargo operations?
- To hold tools and equipment hands-free
- To allow rescue from confined spaces and prevent falls (Correct answer)
- To identify the worker's job role on deck
- To support heavy PPE such as SCBA units
Correct answer: To allow rescue from confined spaces and prevent falls
Safety harnesses are used to facilitate retrieval from confined spaces and to prevent falls from elevated work areas.
Question 3: Which chemical protective suit classification offers the highest level of skin and respiratory protection?
- Level B encapsulated suit
- Level C suit with PAPR
- Level D work uniform
- Level A fully encapsulated suit (Correct answer)
Correct answer: Level A fully encapsulated suit
Level A suits are fully encapsulated and provide the highest protection against vapors, gases, and chemical splashes.
Question 4: A crew member smells a strong hydrocarbon odor on the cargo deck. What is the correct immediate action?
- Continue work and report the odor at the next shift change
- Investigate the source alone before raising an alarm
- Stop work, alert personnel, and report to the officer in charge (Correct answer)
- Open all deck hatches to ventilate the area
Correct answer: Stop work, alert personnel, and report to the officer in charge
Any unexpected hydrocarbon odor must be treated as a potential gas leak—work stops immediately and the situation is reported to the OOW.
Question 5: What minimum flash point distinguishes a flammable liquid from a combustible liquid under US regulations?
- 73°F (23°C)
- 100°F (38°C) (Correct answer)
- 140°F (60°C)
- 200°F (93°C)
Correct answer: 100°F (38°C)
Under US OSHA and DOT rules, a combustible liquid has a flash point at or above 100°F (38°C), while below that it is classified as flammable.
Question 6: Which piece of PPE is specifically designed to protect against static discharge when taking manual tank gauging samples?
- Anti-static (ESD) wrist strap attached to the ship's structure (Correct answer)
- Rubber-soled safety boots
- Chemical-resistant gloves
- High-visibility vest
Correct answer: Anti-static (ESD) wrist strap attached to the ship's structure
An anti-static bonding strap equalizes potential between the gauger and the tank, preventing ignition from static discharge.
Question 7: How often must fixed gas detection systems in tanker cargo pump rooms be tested according to standard industry practice?
- Once per year during drydock
- Before each cargo operation and at regular intervals per SMS (Correct answer)
- Only when a gas alarm activates
- Monthly by a certified shore technician
Correct answer: Before each cargo operation and at regular intervals per SMS
Fixed gas detectors in pump rooms must be functionally tested before cargo operations and at intervals specified in the vessel's Safety Management System.
