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Reg. 168, Reg. 169
MANHOLES, MUDHOLES, ETC.

 

Position of Manhole in Shell

Manholes in cylindrical shells shall be placed as far as possible from any riveted seams, preferably towards the back end of the boiler top.



Reg. 169
MANHOLES, MUDHOLES, ETC.


Compensation Rings to Manholes

a) Compensation shall be provided in every case for the part cut of a cylindrical shell for a manhole. The strength of the net section of compensating ring and also of the rivets securing them to the shell, compared with that part of the shell cut out, shall not be less than the efficiency of the longitudinal seam.
b) The spacing of the rivets shall be such as not to reduce the strength of the shell plate below that of the longitudinal seams.
 
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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
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