Page 309 - International safety guide for oil tankers and terminals

CARGO TRANSFER EQUIPMENT

There are a number of special hose types having the same basic
construction, but which are modified for particular purposes or service.
18.2.5ื่อการศึกษาเท่านั้น---
These include subsea hoses or hoses for use in floating hose strings.

งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
18.2.3 Performance
Hose is classified according to its rated pressure and this pressure should
not be exceeded in service. The manufacturer also applies a vacuum test
to hoses supplied for suction and discharge service.

Standard hoses are usually manufactured for products having a minimum
temperature of -20°C to a maximum of 82°C and an aromatic
hydrocarbon content not greater than 25%. Such hoses are normally
suitable for sunlight and ambient temperatures ranging from -29°C to
52°C.

18.2.4 Marking
Each length of hose should be marked by the manufacturer with:
The manufacturer’s name or trademark.

Identification with the standard specification for manufacture.
Manufacturer’s serial number. ึ
Factory test pressure.
Month and year of manufacture.

Indication that the hose is electrically continuous or electrically
discontinuous.
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Flow Velocities
The maximum permissible flow velocity through a hose is limited by the
construction of the hose and its diameter. The hose manufacturer’s
recommendations and certification should provide details. However,
operators should take other factors into account when deciding flow
velocities. These should include, but not be limited to, the following:

The factor of safety being applied.
Any limitations imposed by flow velocities in the ship’s fixed piping
system.

Weather conditions causing movement of the hose.
Age, service and condition of the hose.
Amount of use and method of storing the hose.
Other local considerations.

For conventional buoy and SPM facilities, the relevant OCIMF guidelines
should be applied. For dock facilities, the BS 1435-2 or other equivalent
standards are applicable.

The following tables are indicative of flow rates for hose supplied under
the British Standard or the OCIMF guidelines.

© ICS/OCIMF/IAPH 2006 275