of

2. Guidance for Gas-fuelled Ships.

The following plans and documents are to be submitted to the Society for approval.

(1) Arrangement of gas fuel bunkering systems

(2) Ventilation system arrangement of gas fuel bunkering station

(3) Drawings and specifications of gas supply piping

(4) Drawings and specifications of offsets, loops, bends and mechanical expansion joints, such as bellows, slip joints(only inside tank) or similar means in the gas piping

(5) Drawings and specifications of flanges, valves and other fittings in the gas piping system. For

valves intended for piping systems with a design temperature below - 55 °C, documentation for leak test and functional test at design temperature (type test) is required.

(6) Complete stress analysis of piping system when design temperature is below - 110 °C

(7) Documentation of type tests for expansion components in the gas piping system

(8) Specification of materials, welding, post-weld heat treatment and non-destructive testing of gas piping

(9) Specification of pressure tests (structural and tightness tests) of gas piping

(10) Program for functional tests of all piping systems including valves, fittings and associated equipment for handling gas (liquid or vapour)

(11) Drawings and specifications of insulation for low temperature piping where such insulation is installed

(12) Specification of electrical bonding of piping

(13) Specification of means for removal of liquid contents from bunkering pipes prior to

Ch 2 Requirements for Levels of LNG Fuel Ready Ch 2

307. Gas fired main engines

Main engines are to be installed in accordance with Ch 3, Sec 5 of Guidance for Gas- fuelled Ships.

308. Gas fired auxiliary engines

Auxiliary engines are to be installed in accordance with

elled Ships.

Ch 3, Sec 5 of Guidance for Gas-

309. Gas fired boilers

Boilers are to be installed in accordance with Pt 7, Ch 5, 1605. of Rules for the Classification of Steel Ships.