16-03-2012, 03:32 PM
INTRODUCTION TO IBR
[attachment=18468]
What Is IBR?
IBR is Indian Boiler Regulations, which was created in 15th September 1950 in exercise of the powers conferred by section 28 & 29 of the Indian Boilers Act. The Indian Boilers Act was formed in 1923, 23rd February to consolidate and amend the law relating to steam boilers.
Steam boiler: Steam boilers under IBR means any closed vessel exceeding 25 liters in capacity and 1 Kg/cm2 design or working gauge pressure or temperature is more than 100 Deg C which is used expressively for generating steam under pressure and includes any mounting or other fitting attached to such vessel which is wholly or partly under pressure when the steam is shut off.
Which steam pipes are regulated by IBR ?
Steam pipes: IBR steam pipe means any pipe through which steam passes from a boiler to a prime mover or other user or both if pressure at which steam passes through such pipes exceeds 3.5 kg/cm2 above atmospheric pressure or such pipe exceeds 254 mm in internal diameter and the pressure of steam exceeds 1 Kg/cm2 above atmospheric perssure includes in either case any connected fitting of a steam pipe.
Where the welded joints connects parts that are of different thickness then the governing thickness as follows :-
The Thinning of two adjacent butt welded componnt including shell to end connection.
The thickness of the shell in connections to flat ends.
The thickness of the shell/end in nozzle attachment welds.
The thickness of the nozzle at the joint in nozzle to flange connection.
The thickness of the pressure part at the point of attachment, where a non pressure part is welded to a pressure part.
[attachment=18468]
What Is IBR?
IBR is Indian Boiler Regulations, which was created in 15th September 1950 in exercise of the powers conferred by section 28 & 29 of the Indian Boilers Act. The Indian Boilers Act was formed in 1923, 23rd February to consolidate and amend the law relating to steam boilers.
Steam boiler: Steam boilers under IBR means any closed vessel exceeding 25 liters in capacity and 1 Kg/cm2 design or working gauge pressure or temperature is more than 100 Deg C which is used expressively for generating steam under pressure and includes any mounting or other fitting attached to such vessel which is wholly or partly under pressure when the steam is shut off.
Which steam pipes are regulated by IBR ?
Steam pipes: IBR steam pipe means any pipe through which steam passes from a boiler to a prime mover or other user or both if pressure at which steam passes through such pipes exceeds 3.5 kg/cm2 above atmospheric pressure or such pipe exceeds 254 mm in internal diameter and the pressure of steam exceeds 1 Kg/cm2 above atmospheric perssure includes in either case any connected fitting of a steam pipe.
Where the welded joints connects parts that are of different thickness then the governing thickness as follows :-
The Thinning of two adjacent butt welded componnt including shell to end connection.
The thickness of the shell in connections to flat ends.
The thickness of the shell/end in nozzle attachment welds.
The thickness of the nozzle at the joint in nozzle to flange connection.
The thickness of the pressure part at the point of attachment, where a non pressure part is welded to a pressure part.