ML20245K840
| ML20245K840 | |
| Person / Time | |
|---|---|
| Issue date: | 06/15/1989 |
| From: | Murley T Office of Nuclear Reactor Regulation |
| To: | Sanacore R AMERICAN NUCLEAR INSURERS |
| Shared Package | |
| ML20245K844 | List: |
| References | |
| IEB-88-008, IEB-88-8, NUDOCS 8907050280 | |
| Download: ML20245K840 (5) | |
Text
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[ JUN 151999 Mr. Ronald Sanaccre, Vice President Nuclear Engineering Department American Nuclear Insurers 270 Farmington Avenue Farmington, Connecticut 06032
Dear Mr. Sanacore:
The staff has evaluated the American Nuclear Insurers' letter of May 22, 1989, regarding the industry's ability to reliably detect thermal fatigue cracking in piping. Considering the recent experience with service-induced degradation, licensees, reactor vendors, and nondestructive examination inspection agencies should be aware of the instrumentation and procedures that are essential for the detection of cracks. Supplement 2 of Bulletin No. 88-08 provided guidance and summarized concepts that are common knowledge within the industry. As the responses to the bulletin were submitted under oath or affirmation, the staff .
has reason to believe that licensees are performing effective ultrasonic 1 testing on large_ diameter pipe. Your contention that some organizations may not be utilizing appropriate examination procedures is disturbing. A summary of the results of your survey on the techniques being used versus the guidance provided by the staff wotid oc helpful to the staff in considering the need for additional action to asrure that maningful volumetric examinations are being performed. My staff will contact you to obtain a copy of this survey in the near future, After several years of effort, Appendix VII, Qualification of Nondestructive Examination Personnel for Ultrasonic Examination," was published in ASME Section ,
XI. In addition, Appendix VIII, "UT Performance Demonstration," should be ap- 1 proved in the near future. Once these appendices are referenced in the Federal !
regulations and fully implemented, state _of-the-art ultrasonic testing will {
become a mandatory ASME Code requirement. Therefore, ultrasonic testing will be j performed on a representative sample of welds by qualified personnel using '
techniques with demonstrated effectiveness.
I hope that this valuable dialogue continues to further our mutual goal of a safe plant environment. ;
Sincerely, l Original 316ned by l Thenu P. M 18Y l Thomas E. Murley, Director Il
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Mr. Ronald Sanacore, Vice President Nuclear Engineering Department American Nuclear Insurers '
l 270 Farmington Avenue Farmington, Connecticut 06032
Dear Mr. Sanacore:
The staff has evaluated the American Nuclear Insurers' letter of May 22,19 ,
regarding the industry's ability to reliably detect thermal fatigue cracki in piping. Considering the recent experience with service-induced degradat n, licensees, reactor vendors, and nondestructive examination inspection 4 encies i should be aware of the instrumentation and procedures that are essent 41 for the detection of cracks. Supplement 2 of Bulletin No. 88-08 provid guidance and summarized concepts that are common knowledge within the indus > y. As the responses to the bulletin were submitted under oath or affirmati , the staff has reason to believe that licensees are performing effective u rasonic testing on large-diameter pipe. Your contention that some or nizations may not be utilizing appropriate examination procedures is distu ing. A summary of the results of your survey on the techniques being used ersus the guidance provided by the staff would be helpful to the staff in co sidering the need for additional action-to assure that meaningful volumetric aminations are being performed.
After several years of effort, Appendix VII, "Quali cation of Nondestructive Examination Personnel for Ultrasonic Examination," was published in ASME Section XI. In addition, Appendix VIII, "UT Performance demonstration," should be ap-proved in the near future. Once'these appendi s are referenced in the Federal regulations and fully implemented, state-of-t >-art ultrasonic testing will become a mandatory ASME Code requirement. T erefore, ultrasonic testing will be performed on a repre.entative sample of we s by qualified personnel using techniques with demonstrated effectiveness .
I hope that this valuable dialogue co inues to further our mutual goal of a safe plant environment.
Sincerely, Thomas E. Hurley, Director Office of Nuclear Reactor Regulation
- See previous concurren >s OFC :* DEST:EMTD :* DEST: B :* DEST:EMTB :* DEST:AD :* DEST:DIR :*NRR:ADT NAME :MHum:vad :RHer ann :CYCheng :JERichardson :LCShao :FMiraglia DATE :06/12/89 :0.f12/89 :06/12/89 :06/12/89 :06/14/89 :06/13/89 __
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.!JBJECT: ' Testing Rerunts"to Detect Thermal Fatiaue Crackino in GT4514 Piping Connected to Reactor Coolant Systems (Sanaccre 1tr tn stello)
DATE IN: 5/26 DATE OUT:
ACTION: O c.om.ments O set up nietins See.Jfr. Richardson O Prepare reply; for Murley signature Supply Inform. O other:
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