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Reg. 371, Reg. 372
Pipe work supports
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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.
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Reg. 372
Drainage
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a)
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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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