naval dockyard, mumbai - Irfc-nausena.nic.in
naval dockyard, mumbai - Irfc-nausena.nic.in
naval dockyard, mumbai - Irfc-nausena.nic.in
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stiffeners etc and plate<br />
breached with supports<br />
around the periphery with<br />
moon plate etc to prevent<br />
deformation due to full<br />
weld<strong>in</strong>g.<br />
NES 155 or<br />
approved<br />
equivalent<br />
standards<br />
thick etc are as per<br />
weld jo<strong>in</strong>t standard.<br />
NAVAL DOCKYARD MUMBAI<br />
DOC CODE Q C H 7 4 Q A P 0 3 8<br />
DEPT : MQC ( HULL) C NO 74 ISSUE<br />
NO 02<br />
DATE : 22 APR 09 PAGE 3 OF 9<br />
7<br />
8<br />
9<br />
10<br />
Plate fitup <strong>in</strong>spection i.e.<br />
tack welded all around<br />
with longitud<strong>in</strong>al, frames,<br />
stiffeners etc and plate<br />
breached with supports<br />
around the periphery with<br />
moon plate etc to prevent<br />
deformation due to full<br />
weld<strong>in</strong>g.<br />
Weld the plate with<br />
stiffeners from <strong>in</strong>ner side<br />
strictly <strong>in</strong> sequence.<br />
Back gaug<strong>in</strong>g and<br />
gr<strong>in</strong>d<strong>in</strong>g, 1 st DP test for to<br />
rectify the defects prior to<br />
offer the DP to QC(H)<br />
Inspection of back gauge<br />
and DP Test prior to full<br />
weld from outside,<br />
through clean post<br />
<strong>in</strong>spection<br />
(a) Full weld from outer<br />
side with breches<br />
11<br />
(b) Rectify deformation<br />
beyond tolerances<br />
12 Remove / cutt<strong>in</strong>g and<br />
gr<strong>in</strong>d<strong>in</strong>g of moon plates,<br />
keys etc and prepare the<br />
weld bid or re<strong>in</strong>forcement<br />
Standard ship<br />
repair<strong>in</strong>g<br />
practices as per<br />
NES 155 or<br />
approved<br />
equivalent<br />
standards<br />
PCW’s sequence<br />
of weld<strong>in</strong>g for<br />
plat<strong>in</strong>g Page 343<br />
Standard ship<br />
repair<strong>in</strong>g<br />
practices as per<br />
NES 155 or<br />
approved<br />
equivalent<br />
standards<br />
Standard ship<br />
repair<strong>in</strong>g<br />
practices as per<br />
NES 155 or<br />
approved<br />
equivalent<br />
standards<br />
Standard ship<br />
repair<strong>in</strong>g<br />
practices as per<br />
NES 155 or<br />
1/<br />
2<br />
1/<br />
2<br />
1/<br />
2<br />
1/<br />
2<br />
1/<br />
2<br />
1/<br />
2<br />
3<br />
3<br />
Check mismatch, root<br />
gap, weld edge,<br />
chamfer<strong>in</strong>g for different<br />
thick etc are as per<br />
weld jo<strong>in</strong>t standard.<br />
DYT/INCOD/1213/106(a)/PLYCM/MADHURREFIT/420 58/127
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