S9074-AR-GIB-010/278 TABLE XXI. NDT inspection of turbine parts. 1 - Continued
MT/PT
RT
HT
UT
VT
Part or service
Piping butt welds: ( steam )
X-2 X-1
- -
X X
X X
- -
(a) below 300 lb/in2 (b) 300 lb/in2 and above, <2-1/2 inches (c) 300 lb/in2 and above, (2-1/2 inches and above) 2
X-1
X-1
X
X
-
Piping fillet welds ( steam )
X-1
-
X
X
-
300 lb/in2 and above
-
-
X
-
Piping and piping welds ( oil )
X
-
-
-
-
X
Weld overlay/inlay (for erosion resistant)
Valve bodies (trip throttle, astern, guard, strainer, maneuvering and non-return) 2
- -
(a) below 300 lb/in2 (b) 300 lb/in2 and above
X-2 X-1
- 3X-1
X X
X X
-
-
-
X
Valve seat seal weld
X-2
1.) Inspections required do not eliminate requirements of applicable material specifications.
X-Indicates test required X-Followed by number indicates acceptance class or level
2.) Records as specified in 13.2.10 are required.
3.) Applicable to castings with an inside diameter 2-1/2 inches or greater (or an equivalent cross sectional area).
14.2.2 Radiography of castings and steam chests. Radiography of castings and steam chests shall be as follows:
(a) External pressure boundary walls above valve seats (nozzle control and by-pass). (b) Steam inlet. (c) Steam chest flange and cover (castings only).
Original 128
Made with FlippingBook - Share PDF online