NIMASA STCW Tanker Familiarization flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Flashpoint

The lowest temperature at which a liquid gives off enough vapour to form an ignitable mixture with air near its surface, measured under specified test conditions.

Inert gas oxygen limit

Cargo tank oxygen content is typically kept below 8 percent by volume when using inert gas, preventing formation of a flammable atmosphere in the tank.

MARPOL Annex I

The annex of MARPOL that regulates prevention of pollution by oil, including discharge limits, the Oil Record Book and double hull requirements for oil tankers.

MARPOL Annex II

The annex regulating noxious liquid substances carried in bulk on chemical tankers, covering categorisation, discharge controls and the Cargo Record Book.

IBC Code

The International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk, setting design and safety requirements for chemical tankers.

IGC Code

The International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, setting design and safety requirements for liquefied gas carriers.

ISGOTT

The International Safety Guide for Oil Tankers and Terminals, providing recommended practice for cargo operations, ship/shore safety checklists and inert gas systems.

SOPEP

The Shipboard Oil Pollution Emergency Plan required by MARPOL Annex I, setting out response actions, reporting and equipment for oil spill emergencies.

Emergency shutdown

A system that rapidly stops cargo transfer and isolates the ship from the shore, used when a hazardous condition develops during cargo operations.

Muster list

A posted document assigning each crew member emergency duties and muster stations for situations such as fire, abandon ship and man overboard.

Enclosed space entry

Entry into a space with limited ventilation requires a permit, atmosphere testing for oxygen, flammable and toxic gas, and a standby person outside.

Static accumulator cargo

A cargo with low electrical conductivity that can accumulate static charge during loading, requiring bonding, grounding and a settling period before sampling.

Ship/shore safety checklist

A checklist completed jointly by ship and terminal before cargo transfer, confirming communications, emergency signals, cargo details and safety arrangements.

Type C tank

An independent pressure vessel used on liquefied gas carriers, designed to withstand the cargo pressure and suitable for low-temperature cargo containment.

Membrane containment

A liquefied gas containment system using a thin, flexible membrane supported by insulation and the ship's hull structure to contain the cargo.

Boil-off gas

Vapour generated from liquefied gas cargo as it absorbs heat; it must be reliquefied, burned or vented safely to control tank pressure.

Chemical tanker ship types

IBC Code ship types 1, 2 and 3 define chemical tanker design standards, with type 1 required for the most hazardous cargoes.

Gas carrier ship types

IGC Code ship types 1G, 2G and 3G define liquefied gas carrier design standards, with 1G required for the most hazardous cargoes.

Safety culture

The shared values and behaviours of a crew that prioritise safety, including reporting near misses and stopping unsafe work without fear of blame.

Lower explosive limit

The minimum concentration of flammable vapour in air that can ignite; below this limit the mixture is too lean to burn.

Permit to work

A formal written authorisation for hazardous tasks such as hot work or enclosed space entry, confirming precautions have been taken before work starts.

Crude oil washing

A cargo tank cleaning method using crude oil to remove residues, requiring inert gas and specific procedures to control static and flammable atmosphere risks.

Oil Record Book

A mandatory record under MARPOL Annex I of oil transfer, ballasting, cleaning and disposal operations, signed by the officer in charge.

Garbage Record Book

A record required under MARPOL Annex V of garbage handling, segregation, discharge and disposal, supporting compliance with discharge restrictions.

Sulphur cap

A limit under MARPOL Annex VI on the sulphur content of fuel oil used by ships, reducing sulphur oxide emissions, with equivalent compliance methods permitted.

Ballast water management

The regime under the Ballast Water Management Convention to treat ballast water and prevent transfer of invasive aquatic species between ports.

Personal gas detector

A portable instrument worn by personnel to monitor the atmosphere for flammable or toxic gas and oxygen deficiency, with alarms to warn of danger.

Cryogenic cold burn

Tissue injury caused by contact with liquefied gas or cold surfaces; protective clothing and face protection are required when handling such cargoes.

Vapour return line

A line connecting ship and shore during liquefied gas transfer to return displaced vapour, controlling pressure and preventing release to atmosphere.

Cargo segregation

The separation of incompatible cargoes by cofferdams or distance to prevent dangerous reactions, as required by the IBC Code for chemical tankers.

ISM Code

The International Safety Management Code, requiring a Safety Management System with documented procedures, a designated person ashore and emergency preparedness.

Toolbox talk

A short pre-job briefing by the supervisor covering the task, hazards, controls and responsibilities, improving communication and safety awareness before work begins.