naval dockyard, mumbai - Irfc-nausena.nic.in

NAVAL DOCKYARD MUMBAI
DOC CODE Q C H 7 4 Q A P 0 3 8
DEPT : MQC ( HULL) C NO 74 ISSUE
NO 02
DATE : 22 APR 09 PAGE 2 OF 9
4 Prior commencement of
welding, The yard/
Contractor must posses
(a) WPS & PQR (b) As
per WPS & PQR valid
certificate for welders with
their individual identity
w.r.t certification while
working (c) Proper
welding equipments (d)
Proper baking oven and
hand oven (e) Correct
consumable and process
prescribed for the job.
Ensure all the terms
before finalise the
contract.
5 Weld edge preparation /
fairing and grinding of the
area. Frames and
longitudinal to be
assessed / renewed,
where ever possible
template or mould to be
prepared to manufacture
new plate for renewal
New plate to be prepared
according to the template
or mould and prepare
weld edge prior to lift the
6
plate & ensure plates and
sections are detect free
and SA­2.5 blasted and
primed.
7 Plate fit­up inspection i.e.
tack welded all around
with longitudinal, frames,
Standard ship
repairing
practices as per
NES 155 or
approved
equivalent
standards
Standard ship
repairing
practices as per
NES 155 or
approved
equivalent
standards
Standard ship
repairing
practices as per
NES 155 or
approved
equivalent
standards
Standard ship
repairing
practices as per
1/
2
1/
2
1/
2
1/
2
3
3 Check mis­match, root
gap, weld edge,
chamfering for different
DYT/INCOD/12­13/106(a)/PL­YCM/MADHUR­REFIT/420 57/127