Reg. 535, Reg. 536, Reg.
536 A, Reg. 537
SHELL TYPE BOILERS OF WELDED CONSTRUCTION
These Regulations shall apply to all boilers of fusion
welded construction other than Water Tube boilers and
Electrode boilers referred to in Chapters
V and X
Where the design of the boiler is of composite construction,
viz., part fusion welded and part riveted, it shall
comply with the relevant regulations governing that
particular type of construction.
Where applicable the general requirements of Chapter
I relating to certificates from Makers, Inspecting
Authorities, and the like and of Chapter
III concerning construction, shall be followed.
Reg. 536 A
Equipment of Workshop
|The welding plant and equipment
are to be of good quality and maintained in an efficient
working condition. The welding apparatus is to be installed
under cover and arranged so that welding work may be carried
out in positions free from draughts and adverse weather
conditions. The procedure is to be such that there is
regular and systematic supervision of the welding works,
and the welding operators are to be subjected by the works
officials to periodic tests for quality of workmanship.
Records of these tests are to be kept and are to be available
to the Inspecting Officers for scrutiny.
||The works should be equipped
with welding plant equipment and quality control personnel.
However, the equipment for destructive, non-destructive
testing and heat treatment is not necessary. The manufacturer
can tie-up for these facilities outside and a letter from
the party with whom he makes a tie-up should be made available
to the Chief Inspector of Boilers of the State. Inspecting
authority or his representative should be allowed to inspect
the material in the laboratory of the party during the
Materials of Construction
Plates, sections and bars used in the construction
of these boilers shall comply in all respects with the
requirements of Chapters
II and V.
Where, however, the tensile strength exceeds 32 tons
per square inch, the full details of the welding technique
including pre-heating and post-heating, and the plate
preparation to be used, shall be submitted to the Inspecting
Authority for approval before manufacture commences.