Page 383 - International safety guide for oil tankers and terminals

PRECAUTIONS ON SHIP AND TERMINAL DURING CARGO HANDLING

24.6.3 Reducers and Spools
---ใช้เพื่อการศึกษาเท่านั้น---
Reducers and spools should be made of steel and be fitted with flanges
that conform to ANSI B16.5, Class 150 or equivalent. Ordinary cast iron
should not be used (see OCIMF ‘Recommendations for Oil Tanker
Manifolds and Associated Equipment’).
24.7.1งสมุด ศูนย์ฝกพาณิชย์นาวี
There should be an exchange of information between the ship and
terminal when manifold reducers or spools are made of any material
other than steel, since particular attention is necessary in their
manufacture to achieve the equivalent strength of steel and to avoid the
possibility of fracture.

Manifold pressure gauges should be fitted to the spool pieces/reducers on
the outboard side of the manifold valves.

24.6.4 Lighting
During darkness, adequate lighting should be arranged to cover the area
of the ship-to-shore cargo connection and any hose handling equipment,
so that the need for any adjustment can be seen in good time and any
leakage or spillage of oil can be quickly detected.

ึ
24.6.5 Emergency Release
A special release device may be used for the emergency disconnection of
cargo hoses or arms.

If possible, the hoses or arms should be drained, purged or isolated as
appropriate before emergency disconnection so that spillage is minimised
(see Section 11.1.15.1).

Periodic checks should be made to ensure that all safety features are
operational.

(See also Section 18.1.10 – Powered Emergency Release Couplings
(PERCs).)

งานห้อ General
Accidental Oil Spillage and Leakage
24.7

Ship and shore personnel should maintain a close watch for the escape
of oil at the commencement of and during cargo transfer operations. In
particular, care should be taken to ensure that pipeline valves, including
drop valves, are closed when not in use.

The ullages of cargo or bunker tanks that have been topped-up should be
checked from time to time during the remaining loading operations to
ensure that overflows do not occur as a result of leaking valves or
incorrect operations.

On double hull ships, care should be taken not to reduce the transverse
metacentric height (GM) such that it can induce an angle of list or loll
when deballasting double bottom tanks after some cargo tanks have been
topped-off, as this could cause an overflow of cargo. (See Section 11.2.)

© ICS/OCIMF/IAPH 2006 349