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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
 
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.
 


Reg. 521

STANDARD CONDITIONS FOR THE DESIGN AND CONSTRUCTION OF ECONOMISER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR VESSELS

FEED PIPES

Steel feed pipes
Steel feed pipes shall be in accordance with Chapter VIII.
 

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
 
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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