STAND PIPES, PADS ETC.
Attachment of Mountings
||Mountings may be attached directly
to any shell or end plate where the plate is of sufficient
thickness to allow a suitable surface to be obtained for
the attachment of the boiler mountings.
||The minimum thickness at the
hole in the shell or end plate shall be not less than
the thickness required for the maximum permissible working
pressure considering the plate as being unpierced.
||Where the boiler mountings
are secured by studs, the studs shall have a full thread
holding in the plate for at least one diameter. If the
stud holes penetrate the whole thickness of the plate,
the stud shall be screwed right through the plate and
be fitted with a nut inside having a thickness equal to
the diameter of the stud. Where bolts are used for securing
mountings they shall be screwed right through the plate
with their heads inside the shell or end plate.