Page 315 - International safety guide for oil tankers and terminals

CARGO TRANSFER EQUIPMENT

Proof Pressure
This is a one time pressure that is applied to production hoses to
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ensure integrity following manufacture and is equal to 1.5 times
the Rated Working Pressure.

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Burst Test Pressure
This is a test requirement for a single prototype hose to confirm
the hose design and manufacture of each specific hose type. The
pressure is equal to a minimum of 4 times the Factory Test
Pressure and must be applied in a specific manner and held for
15 minutes without hose failure.

Burst Pressure
This is the actual pressure at which a prototype hose fails. For a
successful prototype hose, the Burst Pressure would exceed the
Burst Test Pressure.

18.2.7 Hose Flange Standards
Flange dimensions and drilling should conform to the common standard
of BS 1560 Series 150, or equivalent, as recommended for flanges on
shore pipeline and ship manifold connections.

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18.2.8 Operating Conditions

For oil cargo hose intended for use in normal duties:
Oil temperatures in excess of those stipulated by the manufacturer,
generally 82°C, should be avoided (see Section 18.2.3).

The maximum permissible working pressure stipulated by the
manufacturer should be adhered to and surge pressures should be
avoided.
The hose life will be shorter in white oil service than with black oils.

18.2.9 Extended Storage

New hoses in storage before use, or hoses removed from service for a
period of two months or more, should as far as practicable be kept in a
cool, dark, dry store in which air can circulate freely. They should be
drained and washed out with fresh water and laid out horizontally on solid
supports spaced to keep the hose straight. No oil should be allowed to
come into contact with the outside of the hose.

If the hose is stored outside, it should be well protected from the sun.
Recommendations for hose storage are given in the OCIMF publication
‘Guidelines for the Handling, Storage, Inspection and Testing of Hoses in
the Field’.

18.2.10 Checks Before Hose Handling

It is the responsibility of the terminal to provide hoses that are in good
condition, but the Master of a tanker may reject any which appear to be
defective.

© ICS/OCIMF/IAPH 2006 281