Tanker Safety and PPE Flashcards
7 cards from real Tanker Familiarization practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Tanker Safety and PPE flashcards as text
What is the safe working pressure limit concept known as MAWP in tanker operations?
Answer: Maximum Allowable Working Pressure — the upper pressure limit for cargo tanks and piping
MAWP is the maximum pressure at which a pressure vessel or piping system is designed to operate safely.
Which condition makes a tanker cargo tank safe for hot work after cargo discharge?
Answer: Gas-free certificate issued by a competent person after testing below LEL
A gas-free certificate confirms the atmosphere is below the lower explosive limit and safe for ignition sources like welding.
Eye protection rated for chemical splash protection must comply with which ANSI standard?
Answer: ANSI Z87.1
ANSI Z87.1 covers performance requirements for eye and face protection devices, including splash-rated chemical goggles.
During an ammonia refrigerated cargo operation, what specific PPE addition is required beyond standard chemical suit and SCBA?
Answer: Insulated cryogenic gloves rated to −60°C
Refrigerated ammonia (anhydrous) is cryogenic; insulated cryogenic gloves protect against cold burns in addition to chemical exposure.
A portable gas detector alarm activates at 20% LEL on the main deck. What action is required?
Answer: Stop all ignition sources and investigate the leak immediately
An alarm at 20% LEL requires eliminating all ignition sources and identifying the gas source before any work continues.
What is the purpose of the permit-to-work (PTW) system on tankers regarding PPE?
Answer: It formally identifies the specific PPE required before hazardous work begins
The PTW system ensures that required PPE is identified, available, and worn before any hazardous task is authorized.
Why must chemical-resistant boots be worn during cargo connection and disconnection operations?
Answer: To guard against foot injury from cargo spills and drips
Cargo connection points are high-spill-risk areas where chemical-resistant boots protect against burns or injury from liquid cargo contact.