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Reg. 160
STAND PIPES, PADS ETC.

 

Insufficient thickness of End Plates

a) In cases where the thickness of the end plate is insufficient for this purpose the mountings shall be joined to suitable steel seating as provided in Regulation 155.
b) The following constructions as to stand pipes attached to shells and end plates shall be permissible:-

i) Where the internal diameter of the stand pipe does not exceed 1 inch, the stand pipe may be screwed into the plate and fitted with a nut on the waterside.
ii) Where the internal diameter of the stand pipe exceeds 1 inch but does not exceed 2 inches, it may be screwed in and seal-welded.
iii) Where the diameter of the stand pipe exceeds 2 inches, it may be welded to the end plate.
 
The foregoing provisions as to the stand pipe shall be regulated by the following conditions:-
   
i) When stand pipes are screwed, the screwing shall be of Standard Pipe Thread
ii) Where stand pipes, saddles or other forms of seatings are fabricated by fusion welding they shall be stress relieved by heat treatment before attachment to the boiler.
iii) Where the bore of the stand pipe or seating and the hole in the plate does not exceed 5 inches plus twice the thickness of the plate, the seating may be welded to the plate without subsequent heat treatment of the weld so made. Where the hole in the plate exceeds 5 inches plus twice the thickness of the plate, the plate to which the seating is attached shall be stress relieved by the heat treatment.
 
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Message from Chairman of Central Boilers Board About Central Boiler Board History of Indian Boiler Regulations Foreword Contents Chapter Wise Contents Regulation Wise List of Amendments
Indian Boilers Act 1923 Ibr Forms Home Search Help Contact Us