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Reg. 413, Reg. 414, Reg. 415, Reg. 416
RIVETED STEEL BOILERS

Thickness of Angle Rings

Where flange or angle rings are used for pressure purposes in no case shall the thickness after machining be less than 5/16 inch. The thickness shall be as given in Regulation 106.



Reg. 414
RIVETED STEEL BOILERS

Bolts, Nuts and Studs

These shall conform to Regulation 208.




Reg. 415
RIVETED STEEL BOILERS

Hydraulic Test

Each completed boiler shall pass the hydraulic adopted see Fig 44, 45, 46, 47, 48 & 49.




Reg. 416
FUSION WELDED BOILERS

Construction and Workmanship

Construction and workmanship shall comply with the provisions made in Chapter V for fusion welded drums subject to the following conditions, namely:-

Class I boilers shall comply with the requirements of Chapter V.
For end plate connection by welding, the type of steam shown in Figure 44 may be adopted.
Class II boilers shall comply with the following requirements.

The longitudinal seams shall comply with Regulation 253. For end plate connections by welding any of the following types of seams, may be adopted (see Figure 44,45,46,47,48 & 49 ).

Forms of welded joints for circumferential seams acceptable for  for all class of boilers

acceptable For Class II welded boilers

Forms of welded joints for circumferential seams acceptable for seamless shell boilers and for Class II boilers.

For plates over 3/4 inch thick, width of gap between the edges of the plates to be agreed upon by inspecting authority & manufacturer.

Forms of welded joints for circumferential seams acceptable for seamless shell boilers and for Class II boilers.

FORMS OF WELDED JOINTS FOR FLAT END PLATES FOR CLASS II BOILERS NOT EXCEEDING 20 INCH DIAMETER.

Class I Boilers, the working pressure of which exceeds 165 lbs./ sq. in. or the product of the working pressure in pounds per square inch and the internal diameter in inches exceeds 8250.

Class II Boilers, the working pressure of which is 165 lbs./sq. in. and below or the product of the working pressure in pounds per square inch and the internal diameter in inches is below 8250.

 
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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