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  Reg. 371, Reg. 372

Pipe work supports

All pipe work shall be adequately supported in order to permit free movement for expansion and contraction, and the amount of such movement shall be proportioned throughout the whole of any main by the provision of anchors at suitable points. Where pipes may be subject to vertical movement, spring supports designed to carry the load under all conditions shall be provided. It is desirable that points of supports should, as for as practicable, be arranged adjacent to the pipe joints. Slings are in general preferable to roller supports and these latter should be used only where necessary. All pipe supports should as far as practicable, be of mild steel and pipe anchors either of mild steel or cast steel.




Reg. 372

Drainage

a)

In the case of steam mains, attention should be paid to the adequate provision of drainage points in the form of drain pockets. Drainage points connected to stream-traps, shall be provided wherever water can collect under working conditions. Hand drains shall be provided at all points at which water can collect in any portion of the steam main, by valve leakage or other means, when shut down, or when warming up prior to use.
b) Where practicable a suitable gradient shall be provided in the pipe work to ensure the passage of condensed water in the direction of flow of steam towards the drainage point.
c) It is recommended that a by pass should be fitted at each steam-trap.
d) Where the volume of water deposited is likely to be of serious proportions, separator should be installed. Each separator shall be furnished with a steam trap which shall be connected to it by means of a three-way cock one end of which is connected to a manually operated drain.
 
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