CHAPTER 15 INERT GAS SYSTEMS
2 Engineering specifications
2.2 Requirements for all systems
2.2.3.2 Inert gas lines
1 Paragraph 2.2.3.2.1 is replaced by the following:
"2.2.3.2.1 The inert gas main may be divided into two or more branches downstream of
the non-return devices required by paragraph 2.2.3.1."
2 Paragraph 2.2.3.2.6 is replaced by the following:
"2.2.3.2.6 Arrangements shall be provided to enable the inert gas main to be
connected to an external supply of inert gas. The arrangements shall consist of a
250 mm nominal pipe size bolted flange, isolated from the inert gas main by a valve
and located downstream of the non-return valve. The design of the flange should
conform to the appropriate class in the standards adopted for the design of other
external connections in the ship's cargo piping system."
2.2.4 Indicators and alarms
3 Paragraph 2.2.4.2 is replaced by the following:
"2.2.4.2 Instrumentation shall be fitted for continuously indicating and permanently
recording, when inert gas is being supplied: