Message from
Chairman of Central Boilers Board


About Central Boilers
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

Reg. 113
END PLATES

 

Flat End Plates

a) The plates of boilers shall preferably be in one piece made from one rolled plate. Alternatively, the end plates may be built up from two pieces by riveting or by fusion butt-welding. In the latter case, the line of weld shall be parallel to the horizontal axis of the boiler and the entire plate after flanging shall be subjected to stress relieving and the weld shall be radiographed.
b) The peripheral flanging of end plates shall be done by machine. Such flanging shall preferably be done in one operation, but where this is impracticable sectional or creep machine flanging may be permitted, provided that the plate is worked at a suitable temperature, and the plate is heated to an adequate distance beyond the portion under immediate treatment.
bb) In the construction of unfired boilers when the dished ends do not form a part of the heating surface, cold spun dished ends conforming to IS: 2825 may be used.
c) Care must be taken to see that the flanges are circular and of good surface, free from local irregularities, and that they are parallel and square with the flat part of the plate. For the purpose of relieving internal stresses, all plates which have been flanged or locally heated shall afterwards be efficiently annealed unless during the last stage of manufacture they have been uniformly heated throughout.
d) Flat portions of end plates, on completion of all flanging and machining operations, shall be flat and free from set or distortion.

 
Back   Top
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