m/t “ ”
Testing of Sea Valves

Procedure:
1. Close sea chest valve and block valve 1.
2.
Drain water from
section of pipe between sea chest valve and block valve 1.
3.
Pressurise pipe to approximately
3.5
kg/cm² (50 psi).
4. Watch for a pressure drop over
15 minutes.
5. If a pressure
drop is noted, check alongside the ship for bubbles of air escaping through
the sea chest valve. Also check at test fitting B for leakage, if
necessary using a balloon over the fitting to test for slow leaks.
Note:
Care must be taken that the pipe system is not over-pressurised during the test. This
can be done by utilising a pressure
limiting device on the air inlet set for no more
than 3.5 kg/cm2.
The
outboard sea valves MUST be tested prior to arrival at loading/ discharge
ports. The test should be conducted at anchor or alongside in calm weather conditions. (ICS 2ND EDITION)
No comments:
Post a Comment