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Reg. 520, Reg. 521,
Reg. 522
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMISER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
FEED PIPES
General |
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Feed pipers may be
made of steel, cast iron or copper cut cast iron pipes
will not be accepted for a working pressure over 200 lbs.
per sq. in. or 425°F. Copper feed pipes shall be solid
drawn and not exceeding 8” external diameter and
may be used for a working pressure not exceeding 350 lbs.
or 300°F.
Design pressure for feed piping:-
The design pressure shall be the maximum pressure generated
in overcoming friction and other losses in the feed piping
under ordinary working conditions, or the maximum pressure
which can be generated by the boiler feed pumps unless
special provision is made to prevent that pressure being
communicated to the pipe line. |
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Reg. 521
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMISER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
FEED PIPES
Steel feed pipes |
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Reg. 522
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMIZER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
FEED PIPES
Cast Iron feed pipes |
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| a) |
The standard conditions
for material of construction and tests for cast iron pipes
shall comply with Regulation
505 to 509. |
| b) |
The maximum working
pressure shall be determined by the following formula:-
| W.P. = |
130(t-6) |
Eqn.(122) |
| d |
Where,
t=thickness in thirty second of an inch.
d=the external diameter of the pipe in inches. |
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