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. 420, Reg. 421, Reg. 422, Reg. 423
TESTS FOR CLASS II FUSION WELDED SEAMS

Nick Break Test

The specimen shall be rectangular in section and cut transversely to the weld so as to have a width not less than one-and-half times its thickness. The slot shall be cut in one side of the specimen through the centre of the weld and perpendicular to the outer face of the vessel. The specimen shall than be broken in the weld and the fracture shall reveal a sound homogeneous-weld, substantially free from slag inclusions, porosity and coarse crystallinity.



Reg. 421
TESTS FOR CLASS II FUSION WELDED SEAMS

Retests

Should any of the tests fail, two retests shall be made on specimens cut from the same plate and both retests shall meet the specified requirements.




Reg. 422
TESTS FOR CLASS II FUSION WELDED SEAMS

Specimens after Tests

If required by the Inspecting Authority, the specimens after test shall be forwarded for examination.




Reg. 423
TESTS FOR CLASS II FUSION WELDED SEAMS

Heat Treatment

All fusion welded electrode boilers shall be stress-relieved by heat-treatment. The heat-treatment shall be in accordance with Regulation 267.

 
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