(g) Reinforcing plates and saddles of nozzles attached
to the outside of a vessel shall be provided with at least
one telltale hole [maximum size NPS 1⁄4 (DN 8) tap] that
may be tapped for a preliminary compressed air and soapsuds
test for tightness of welds that seal off the inside of
the vessel. These telltale holes may be left open or may
be plugged when the vessel is in service. If the holes are
plugged, the plugging material used shall not be capable
of sustaining pressure between the reinforcing plate and
the vessel wall. |