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Reg. 555 e, Reg.
555 f, Reg. 555 g
Attachment of pads
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Pads welded to the shell or end plate shall be welded
internally and externally.
Methods of attachment of pads shall be as shown in Figures
XII/90, XII/91, or
XII/92. Where the bore of the seating
does not exceed 5 inches twice the thickness of the
plate to which it is attached, the pad may be welded
to the plate without subsequent heat-treatment of the
weld so made. If these limits are exceeded, the whole
plate to which the pad is attached shall be stress relieved
by heat-treatment on completion of the welding.
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Reg. 555 f
Attachment of water and pressure gauges
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Water gauges and pressure gauge siphons maybe attached
direct to the front end plate without the intervention
of a pad or standpipe, provided they are flanged and
secured by studs. If the studs are screwed through the
plate, nuts of full thickness shall be fitted on the
inside of the plate.
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Reg. 555 g
Bolts and Nuts
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All holes for bolts and studs shall be drilled and
bolts and nuts shall be machined where in contact with
the flanges.
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