Friday, May 20, 2016

sea chest valve testing

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