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Reg. 165
MANHOLES, MUDHOLES, ETC.

 

Compensating Rings and Frames for Openings in Shells

a) Compensating rings and frames for openings in shells shall be of wrought or cast steel. The compensation provided shall preferably be flanged frames, which shall be fitted in all cases where the shell plate exceeds 9/16 inch thick. Flanged frames shall be weldless and shall be flanged or pressed to provide a flat jointing surface for the cover.
b) All compensating rings and frames shall be formed to bed closely to the surfaces to be connected. Where attached to cylindrical shells and are 12 inches x 9 inches or larger they shall be atleast double riveted. All caulking edges shall be machined or machine gas cut.
c) The flat jointing surfaces of all flanged or pressed frames and all doors or covers shall be machined.
 
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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