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Reg. 515
, Reg. 516 A, Reg. 516 B
STANDARD CONDITIONS FOR THE DESIGN AND CONSTRUCTION OF ECONOMISER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR VESSELS

Steel Economisers with or without cast iron sleeves on the tubes

Headers: Construction

a)

The headers shall be constructed in accordance with Regulation 154.
b) Branches, shall be secured by one of the following methods.

1) Expanded, belled and welded.
2) Strength welded with additional securing means.
3) Full depth strength weld.
4) Branches less than 2 inch bore may be screwed and seal welded.
c) Open ends of forged for seamless steel tube headers may be closed by forging, or the ends may be secured by bolting, screwing, or welding in an approved manner.



Reg. 516 A
STANDARD CONDITIONS FOR THE DESIGN AND CONSTRUCTION OF ECONOMIZER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR VESSELS

STEEL ECONOMISER WITH OR WITHOUT CAST IRON SLEEVES ON THE TUBES

Headers: Working Pressure
 

(a) Rectangular headers: -

The working pressure shall be calculated in accordance with Regulation 340.

 


Reg. 516 B
STANDARD CONDITIONS FOR THE DESIGN AND CONSTRUCTION OF ECONOMIZER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR VESSELS

STEEL ECONOMISER WITH OR WITHOUT CAST IRON SLEEVES ON THE TUBES

(b) Cylindrical headers
 
The working pressure shall be calculated in accordance with Regulations 270 and 271.
 
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