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. 5
Modification of Formulae

(i) Under the Regulations for determining the working pressure to be allowed on various parts of boilers, the material to which the formulae apply shall in the absence of express provision to the contrary be steel complying with the requirements of Chapter II.
(ii) Where no test certificate for plates and rivets are produced, the material may be treated as iron, if the Chief Inspector is satisfied that the material is of suitable boiler quality. If in such cases the Chief Inspector is clearly satisfied that the material is of good quality, a higher strength than that allowed for iron may be permitted but the strength of the plates shall not, save for special reasons, be assumed to be more than 26 tons per square inch. In such cases the values of tensile and shear strength shall not be more than 26 and 21 tons per square inch for steel, and 21 and 18 tons per square inch for iron. For iron across the grain the tensile strength may be 18 tons per square inch.
(iii)

For flat plates of copper, the working pressure as found from the formulae, reduced by 50 per cent shall be the working pressure permitted.


 
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