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NDE Requirements in UW-2 (Service Restrictions)
Note: F.P (Full Penetration), P.P (Partial Penetration)
“Category” defines the location of a joint in a vessel (UW-3).
“Type” defines the configuration of a welded joint (UW-12)
| Method |
RT |
PT |
UT |
MT |
| 범위 |
내부 |
표면 |
내부 |
표면 |
| |
|
블로우 홀 |
|
블로우 홀 |
|
| |
|
용입불량 |
균열 |
용입불량 |
균열 |
| 검출 가능한 |
융합불량 |
핀홀 |
융합불량 |
핀홀 |
| 용접부 결함 |
균열 |
|
균열 |
|
| |
|
슬래그혼입 |
|
슬래그혼입 |
|
| |
|
|
|
밀집블로우홀 |
|
| SERVICE |
Lethal |
Low Temperature |
Unfired
Steam
Boiler |
Pressure
Vessel
Direct Firing |
| Category |
A |
Type 1 |
Type 1 |
Type 1 |
Type 1 |
| B |
Type 1 or 2 |
Type 1 or 2 |
Type 1 or 2 |
Type 1 or 2 |
| C |
Type 1 or 2 |
F.P |
- |
- |
| D |
F.P |
F.P OR P.P |
|
|
| NDE Required |
All Butt Joints: RT |
Cat.
A, B: RT
Fillet: MT/PT |
All Butt Joints: RT |
|
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