Chemical Tankers. Test 7

Before cargo operations start the Master should establish proper liaison between the ship and _____

Submerged pumps are commonly driven _____

Chemical tankers are built with either 'gravity' or 'pressure' type cargo tanks. A 'gravity' tank is one having a design pressure at the top of the tank of:

Epoxy coatings in tanks, which have been stressed beyond their chemical resistance during the carriage of strong solvents, tend to soften (you test for this with your nails or with standardised test pencils). If you encounter this condition you would:

Sometimes, in order to improve suction to the pumps when discharging 'light' or 'gassing' cargoes, the tanks are pressurised by admission of inert gas under overpressure from the inert gas fans. In this respect one must remember that tanks are generally dimensioned to withstand a vapour pressure of:

The category of cargo requiring the most efficient stripping arrangement is Category _____

In the chemical trade the acceptable means of cargo line segregation in case of two non-compatible products is:

Stainless steel tanks are sometimes required to be 'passivated' especially after tank surface repairs have been carried out and aggressive cargoes are to be loaded. 'Passivation' normally consists of:

In chemical tankers, to avoid having a deteriorating effect on cargoes and also to avoid cargoes attacking them, steam heating coil are generally made of:

To accommodate expansion of piping on the deck of a chemical tanker the following are fitted: