ML19274E158
| ML19274E158 | |
| Person / Time | |
|---|---|
| Issue date: | 02/21/1979 |
| From: | Cox T Office of Nuclear Reactor Regulation |
| To: | Heltemes C Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7903130083 | |
| Download: ML19274E158 (4) | |
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UNITED STATES 3%
NUCLEAR REGULATORY COMMISSION
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FEB 1 1979 i
1 MEMORANDUM FOR:
C. J. Heltemes, Jr., Chief j
Standardization Branch, DPM APPLICANT:
Babcock & Wilcox Company
SUBJECT:
SUMMARY
OF MEETING WITH BABC0CK & WILC0X COMPANY ON FEBRUARY 14, 1979 TO DISCUSS THE CONTROL 0F CHANGES TO STANDARDIZED DESIGNS On February 14, 1979 members of the staff's Standardization Branch met with representatives of the Babcock & Wilcox (B&W) Company at NRC headquarters in Bethesda, Maryland. The meeting was requested by B&W to discuss the procedural means available to them to effect changes to the B&W standard nuclear steam supply system over the next several years.
Meeting attendees are identified in Enclosure 1.
Background
B&W's current product line is represented by the BSAR-205 NSSS, which is documented in the BSAR-205 SSAR through Amendment No. 25, for which PDA-12 was issued on May 31, 1978. The current PDA is valid for three years, and is conditioned with respect to several safety issues: (1) cold shutdown using only safety-grade systems,'(2) ATWS, and (3) seismic and environmental qualification of electrical equipment.
Discussion B&W stated that their objective was to identify licensing methods or procedures for the orderly implementation of changes to their standard product line o/er a period of several years. Changes were defined by B&W as all matters requiring ultimate resolution, ranging in importance and kind from typographical errors in the SSAR to major product design upgrading initiated by B&W to maintain a competitive marketing position.
B&W presented a categorized listing of the types of changes they have identified, and the proposed disposition of the matters within the context of the licensing process (see Enclosure 2).
We discussed methods of effecting changes inititated by B&W in the BSAR-205 design, including FDA amendments, topical reports, new PDA(s), an FDA-1 or FDA-2, and, by exceptions to the standard design approval taken at either the construction permit or operating license stage of a plant appl ication. The thrust of staff remarks was that of the above methods, the PDA amendment was. the least desirable from the standpoint of adherence 7903130OE
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Meeting Summary - Feb 14 1979 to the principles of standardization. Further, based on our understanding of the relatively few changes of the type under consideration by S&W as described at this meeting, we believe that topical reports could be prepared to document the changes as alternatives to the design approved within PDA-12. These topical reports, when under review by the staff, could then be referenced by utilities in construction permit applications which also referenced PDA-12.
W.
Q Thomas H. Cox Standardization Branch Division of Project Management l
Enclosures:
1 As stated It l
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ENCLOSURE NO. 1 ATTENDANCE LIST MEETING WITH BABC0CK & WILC0X CO.
FEBRUARY 14, 1979 NAME AFFILIATION C. J. Hel temes, Jr.
NRC/DPM Thomas Cox NRC/DPM William Kane NRC/DPM Patrick D. O'Reilly NRC/DPM James Taylor B&W Bennett Cardwell S&W Robert Brockman B&W 9
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o2/f4 /79 CATEGORIES JF POSSIBLE BSAR CllANCES AND MEANS OF DISPOSITION CHANGE TYPE EXAMPLE DISPOSITION I.
Typos, errata spelling errors, referencing errors no action II. Updates not technically related update list of topical report no action III. Hinor corrections; minor tech-classification of fuel transfer tube no action on BSAR; list as nical errors in BSAR minor in referencing PSAR; correct in FSAR IV. Minor product upgrades - changes Gentile flow measurement vs incore ap no action on BSAR; list as which have a limited impact on 70% vs 80% motor starting voltage minor in referencing PSAR; overall plaat design correct in FSAR V.
Upgrades in BOP criteria - areas minimize AFW flow rate requirements no action on BSAR; list as where B&W changes requirement to minor in referencing PSAR; reduce B0P cost correct in FSAR VI. Post PDA open items fuel testing update in FSAR; certain items should be reported by letter a
prior to FSAR VII. Hajor product upgrade (limited Parallel Hybrid Module file topical (" delta SAR" to nuuber)
Variable Temperature Control BSAR); reviewed separately and New fuel design later incorporated into IISAR i
VIII. Nnc initiated system changes ATWS same as for VII IX. NRC Initiated code changes Appendix K rules same as for VII X.
Design problems normally Analysis changes resolve at FSAR fixed between PSAR and FSAR