S9074-AR-GIB-010/278
TABLE X Class A Pressure Vessel Inspection Requirements 1/ . Continued
Required Examination and Tests
Pressure Vessel Class
Weld Joint Type
MT/PT TEST 9
PRESSURE
RT
VT 10
Root Layer
Final Weld 7
Final Weld 7
Extent 8
Root Layer
Final Weld
2
10 percent of long and circ welds
Butt and other complete penetration welds All nozzles, pads and other attachments Butt and other complete penetration welds All nozzles, pads, and other attachments
-
x
x
A-3 A-LT
x 5 6
x 3
x 4
-
x
x
-
x 3
x 4
-
x
-
-
-
x
x
-
A-4
x
-
-
-
x
-
x
NOTE: X indicates that the test is required.
1.
Where new welds in pressure vessels intersect or tetminate on existing or older welds. the latter dds shall be RT inspected for a distance of 6 indm (each side of intersection). measured from the point of Intersection. Acceptance criteria for the existing or older welds and adjacent base metal shall be the same as that specified by MIL-STD-2035 for inadvertent radiography. Welded vessels shall be subjected to hydrostatic pressure test per the requirements for pressure Vessels of their type and held for sufficient time to pmit VT of all welds. Pressure tests shall be conducted on uncoated pressure vessels. For joints welded from one side only. MT/PT inspect the root pass. For double welded joints. MT/PT inspect the back chipped. gouged ground. or machined root area prior to welding the second side. VT at 5X magnification my be substituted for MT/PT inspection. Linear discontinuties shall be unacceptable. Root layer inspection may be deleted if .the weld is given a 360 degree (or 100 percent) RT or UT inspection. Root layer inspection i s not required for welding such as bosses and removable backing. where the root layer will be removed.
2.
3.
Original 92
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