Safe Working Practice. Test 3 – Online Maritime Tests

Electric arc welding is to be carried out in the machinery spaces other than the workshop. Which of the alternatives below would be the correct procedure for the connection of the 'return' cable to the welding set?

Weld a stud bolt close to the work piece and connect the return cable to this.
Any of the listed alternatives.
Have a short length of cable permanently connected to the ships structure close to the welding set.
Connect the return clamp direct to the work piece and welding set via a cable of suitable length.

Before leaving the machinery spaces of a UMS vessel whose engine room is covered by a fixed CO2 installation, should the duty engineer:

Leave the doors in whatever position they were in.
Hook the main entry/exit doors in the open position.
Any of the listed alternatives.
Ensure all doors are in closed position.

The responsibility for safety and security rests with everybody on board the vessel. General house-keeping rules should be followed. Which of the listed rules is the most important?

Do not use old and slippery shoes on decks.
Do not use grinding machines or rust chiping machines without wearing gloves.
Do not walk ladders without using handrails.
Do not carry lighters or matches on the tank deck.

A tank containing hydrocarbon residues requires manual cleaning by use of shovels, scrapers etc. Should you:

Open the tank, provide adequate ventilation/lighting, test oxygen content, have someone standing by with rescue equipment, complete a tank entry permit then commence work.
Open the tank and provide lighting, have someone standing by outside the tank and commence working.
Open the tank, provide adequate ventilation and lighting, commence work and have someone standing by outside the tank.
Open the tank, provide ventilation and commence work immediately.

In a closed room with freon leakage, you have to do some work that requires the use of open flame. Can this be dangerous?

There is no danger at all.
Yes, freon reacts with open flame to a poisonous gas (Fosgen).
The freon gas attack your skin.
Yes, there can be an explosion.

Before entering tanks and / or enclosed spaces - what should be done?

Notify the master or the responsible officer.
Agree with those entering the space on a signal system.
Test the atmosphere of the space by approved method.
All of the alternatives together.

When working in areas which requires the use of a ladder, should you:

All of the listed alternatives.
Have a person standing by at the scene/bottom of ladder.
Secure the ladder top and bottom.
Use a safety belt/harness and secure it to a fixed piece of equipment/ship's structure.

Gas welding is carried out in the work shop. Prior to lunch break the following precaution is carried out:

The main supply valves in the deck storage are closed prior to switching to UMS-mode
No precautions are taken
One of the ratings is left 'on watch' during the lunch break.
The local acetylene/oxygen valve in the work shop is closed prior to switching to UMS-mode

What is the normal procedure for safe operation when one of the main engine fuel pumps is to be put out of action?

Reduce main engine setting to stop
Reduce main engine setting to dead slow
Close fuel valve
Reduce main engine setting to harbor speed

Review Answers