Norwegian Oil and Gas Association Recommended Guidelines for NDT
of GRP pipe systems
and tanks
No.: 055 Established: 01.03.97 Revision no: Date revised: Page:
3
ANNEX A A1
DRAFT PRACTICE FOR CLASSIFYING VISUAL DEFECTS IN
GLASS-REINFORCED PLASTIC PIPES AND TANKS
A.1 SCOPE A1
A.1.1 Pipe A1
A.1.2 Tanks A1
A.2 MAIN DETECTABLE DEFECTS A1
A.3 DEFECT TYPES AND ACCEPTANCE CRITERIA A2
A.3.1 Defect descriptions and assessment schedule A2
A.3.2 Acceptence criteria/ASTM/ D 2563 modifications A50
A.4 AREAS FOR FURTHER DEVELOPMENT A52
A.5 DRAFT INSPECTION PROCEDYRE A52
A.6 REFERENCES A54
ANNEX B B1
PRESSURE TESTING
B.1 MAIN DETECTABLE DEFECTS B1
B.2 LIMITS OF DETECTABILITY B1
B.3 GENERAL B1
B.4 TEST PROCEDURE B1
ANNEX C C1
ULTRASONICS TEST METHODS AND DETECTABLE DEFECTS
C.1 MAIN DETECTABLE DEFECTS C1
C.2 LIMITS OF DETECTABILITY C1
C.3 GENERAL C3
C.4 AREAS FOR FURTHER DEVELOPMENT C4
C.5 DRAFT INSPECTION PROCEDUREFOR ULTRASONIC
INSPECTION OF ADHESIVELY BONDED FIBRE GLASS
PIPE JOINTS C4
1.0 SCOPE C4
2.0 GENERAL REQUIREMENTS C4
3.0 EQUIPMENT C5
4.0 CALIBRATION C5
4.1 Calibration standard C5
