ML20199L256
| ML20199L256 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/07/1986 |
| From: | Terao D NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM) |
| To: | Shao L NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM) |
| References | |
| NUDOCS 8604100326 | |
| Download: ML20199L256 (4) | |
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MAR 7 1986
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Docket Nos: 50-445/446 MEMORANDUM FOR: Larry C. Shao;, Manager, Comanc' e Peak Task Force h
FROP.:
David Tera, Piping & Supports Leader, Comanche Peak Task Force
SUBJECT:
STAFF AUDIT OF SWEC PIPING AND PIPE SUFFORT REQUALIFICATION EFFORT On February 24-26, 1986, the NRC staff and its consultants from Teledyne Engineering Services (TES) and Engineering Analysis Services (EAS) conducted an audit of the SWEC. piping and pipe support reanalysis effort. The audit was conducted at the offices of SWEC in New York, NY. The purpose of the audit was to arsess the adequacy of the implementation of the CPRT Program Plan (Revision
- 3) DSAP IX Attachment 2. Element C.6 involving the SWEC piping stress re c alysis and pipe support requalification effort. The staff audit focused on twJ #>ior areas:
1) the piping stress analysis results for a portion of the RHR system, and 2) selected pipe support design calculations.
A list of attendees during the audit are included in Attachment 1 of this memorandum.
The purpose of the staff audit was to assess the adequacy of the implementation,
of the SWEC piping and supports requalification effort. For the piping ai:alysis of fort, the staff selected a portion of the residual heat removal (RHR) system for the audit for the following reasons:
The piping) stress analysis was complete (pending confirmation of certai 1.
input data.
2.
The stress problem included dynamic fluid transient loads.
3.
The stress problem included interfaces with other stress problems in the Westinghouse scope, 4.
The stress problem included many combinations of operating modes.
For the pipe support effort, the staff found that the pipe support calculations associated with the above RHR stress problem were not yet complete. Thus, the staff audited the completed support calculations for piping stress problems other than the above RHR stress problem. The piping systems included chemical and volume control (CS), component cooling water (CC), residual heat removal (RH), and chilled water (CH). The pipe support tiesigns associated with
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completed support calcul7tions tended to be the simpler standard component support and rigid frame sesigns. Those su'pports which were associated with special technical issues (e.g., citiched U-bolts, Richmond insert / tube steel, rton-rioid frames) did riot have coinpleted design calculations at this time due to the incomplete status of the resolutions to these special technical issues.
Thus, the staff did not review the implementation of the resolutions of the special technical issues during this audit. An audit cf the implementation of the special technical issues will be performed at a later date by the staff.
The staff audit focused on the compliance of the piping analysis and support calculations with the procedures and design criteria provided in CPPP-6 and CPPP-7, the acceptability of the design methods and assumptions used in t.he analysis and calculations, and the adequacy of satisfying interface requirements.
As a result of our audit, the staff identified several open itens which need to be addressed by the applicant.
At de conclusion of the audit, the staff discussed its plans to document the audit findirgs and transmit them to the applicant for resolution. A detailed audit report which will include our findings and open i'. ems is currently being compiled by the staff and its consultants for transmittal to the applicant.
A total of 104 hours0.0012 days <br />0.0289 hours <br />1.719577e-4 weeks <br />3.9572e-5 months <br /> were involved in this audit.
David Terao Comanche Peak Task Force cc:
V. Noonan T. Westerman C. Trannell A. Vietti-Cook G. Mizuno 5-Hou J. Fair D. Landers, TES R. Hookway, TES V. Ferrarini, EAS P. Chen, ETEC u
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ATTACHMENT l' Attendance Lists for NRC Audit of SWEC Piping and Pipe Support Reanalysis February 24-26, 1986 February 24, 1986:
Name Company Area of Responsibility R. Normandeau SWEC CPPP-8 L. Barren TES/NRC Audit B. Hookway TES/NRC Audit
- k. Stuart TES/NRC Audit
'D. Hernen SWEC Asst. Proj. Manager C. Vatters SWEC Proje.t QA Manager P. Dunlop SWEC Engineering Mgr.-NY D. Terao NRC Audit R. Wrucke SWEC PE D. Van Duyne SWEC Lead-Fluid Transients K. Chu SWEC Asst. Proj. Manager R. Klause SWEC Project Manager V. Ferrarini EAS/NRC Audit J. Finneran TUGC0 Piping & Supports t
W. Evans SWEC Project Lead Engineer February 25, 1986:
D. Terao NRC J. Chu SWEC/HY L. Barron TES S. Sheth SWEC/NY M. Sajjad SWEC/NY l
C. Watters SWEC/NY K. Chu SWEC/NY j
R. Stuart TES Februar9 26, 1986:
I D. Terao NRC Audit (Piping)
C. Watters SWEC QA D. Chang SWEC EMD T. Rhee SWEC EMD l
K. Chu SWEC Asst. Proj. Manager R. Stuart TES/NRC Audit j
R. Hookway TES/NRC Audit i
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_4 Exit Meeting - NRC Audit Name Company Area of Responsibility D. Terao NRC Audit C. Watters SWEC QA K. Chu SWEC Asst. Proj. Manager G. Dave SWEC Supervisor,' EMD H. Moscow SWEC Project Services P. Dunlop SWEC Engineering D. Hernon SWEC Asst. Proj. Manager R. Stuart TES NRC Audit R. Hookway TES NRC Audit T. Rhee SWEC EMD V. Ferrarini EAS/NRC Audit L. Barron TES Audit J. Chu SWEC Pipe Support l
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