ASME Code Case 181

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Charlie ChongA subsurface indication shall be considered as a surface flaw if the separation(S in Fig. 1) of the indication from the nearest surface of the component isequal to or less than half the through dimension (2d in Fig. 1, sketch [b] ) ofthe subsurface indication
Charlie ChongTABLE 2FLAW ACCEPTANCE CRITERIA FOR 25 mm (1 in)TO 300 mm (12 in.) THICK WELD
Page 1 and 2: ASME Code Case on Use of Alternativ
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Page 5 and 6: Charlie ChongB31 CASE 181-1CASES OF
Page 7 and 8: ASME B31.3344.6 Ultrasonic Examinat
Page 9 and 10: 344.6.2 Acceptance Criteria. A line
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Page 13 and 14: Charlie ChongThe qualification bloc
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Page 19: Charlie ChongGENERAL NOTES:(a)t = t
Page 23 and 24: Charlie Chong(d) The ultrasonic exa
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Page 39 and 40: Charlie Chong(d) With the owner’s
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Page 43 and 44: Charlie ChongB31 Case 181-2Original
Page 45 and 46: 344.6.2 Acceptance Criteria. A line
Page 47 and 48: Charlie Chong4) Examinationa)The in
Page 49 and 50: Charlie Chong5) Data RecordingData
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Charlie ChongStored valves shall be
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(b) Category M Fluid Service: a flu
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1.0 Valve BodyThe valve body, somet
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5 Valve Certification and Retesting
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Charlie Chong/ Fion Zhang
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Charlie Chong/ Fion Zhang
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ASME Code Case 181

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