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Reg. 99, Reg. 100, Reg. 101
CONSTRUCTION AND WORKMANSHIP

GENERAL

Preparation of Plates

The edges of all plates and butt straps shall be machined or flame-cut by machine and the caulking edges shall be beveled to an angle not sharper than 70 degrees to the plane of the plate and between 70 and 80 degrees wherever practicable.

Plates which are to be flame-cut by machine without heat treatment or subsequent grinding or machining shall not have a carbon content higher than 0.26 per cent.

Where the carbon content exceeds 0.26 per cent heat treatment, grinding or machining shall be carried out.

The edges of all plates shall have a smooth finish.


Reg. 100
CONSTRUCTION AND WORKMANSHIP

GENERAL

Normalizing of certain steel plates

All steel plates which are dished, flanged or locally heated shall be afterwards normalized unless they have been heated during the operation within the normalizing range.

Reg. 101
CONSTRUCTION AND WORKMANSHIP

GENERAL

Minimum thickness of Plates

No boiler plate shall be less than ¼ inch in thickness.

 
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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