Chemical Tankers / Day 2 / Day 2 Topic 5 Cargo Hoses & Pipelines

Cargo hoses and pipe lines.

The annual hydrostatic test procedures for rigid pipe is in Chemical Manual 12.21.

Cargo hoses and pipe lines.

As with the valves, it is essential that all cargo, COW, ballast and bunker pipework remains in good condition. To ensure this, all cargo, ballast and bunker pipe work is to be annually pressure tested, and must not leak under static liquid pressure at least 1.5 times the maximum allowable working pressure.

On satisfactory completion of the test a suitable Deck Log entry is to be made.

Cargo hoses and pipe lines.

Valve integrity is essential in maintaining a fully operational and reliable cargo pipeline system and hence, the operation of a tanker.

All vessels must carry out a valve function test as per PMS to check the following:

•All valves operate throughout their full range.

•All valves close fully.

Cargo hoses and pipe lines.

New vessels must, in addition, carry out this test prior to arrival at the first load port.

To ensure that valves are not leaking all valves are to be pressure tested whenever it is practicable during tank cleaning. This will require the Chief Officer to draw up a comprehensive test programmer, which allows the checking of all valves in the system.

Cargo hoses and pipe lines.

Valves:

Two types: Manual / Actuator

Maintenance / Proper operation

Cleaning / Inspection

End of Topic