ML20035D440
| ML20035D440 | |
| Person / Time | |
|---|---|
| Site: | 05200001 |
| Issue date: | 04/07/1993 |
| From: | Taylor J NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| To: | Shewmon P Advisory Committee on Reactor Safeguards |
| References | |
| NUDOCS 9304130216 | |
| Download: ML20035D440 (3) | |
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.r WASHINGTON, D. C. 20555 April 7, 1993 Mr. Paul Shewmon, Chairman Advisory Committee on Reactor Safeguards U.S. Nuclear Regulatory Commission
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Washington, D.C.
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Dear Mr. Shewmon:
The staff has received your letter of March 18, 1993, to Chairman Selin, in which you provided the Advisory Committee on Reactor Safeguards' (ACRS) views regarding the staff's revised estimate of the schedule, proposed in i
SECY-93-041, " Advanced Boiling Water Reactor (ABWR) Review Schedule," for completing its review of the ABWR design.
In that letter, you indicated a need to conduct a three-month review of the ABWR standard safety analysis report (SSAR) revisions and the staff's final safety evaluation report (FSER),
but also stated a willingness to help expedite the schedule by conducting meetings with the staff and GE Nuclear Energy (GE) prior to the completion of the FSER.
i The staff appreciates the opportunity to work with you by participating in additional ACRS meetings on the ABWR design in order to facilitate the schedule proposed in SECY-93-041. Recently, on March 18, 1993, the staff met with an ACRS subcommittee on the severe accident closure. The staff is planning for a followup subcommittee meeting on severe accident closure in
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June 1993.
In addition, GE has indicated it will support a site visit from the ABWR subcommittee members to accommodate an audit of several design calculations of interest to support early resolution of issues. The staff believes that many issues will be resolved with GE such that additional l
subcommittee meetings can be held this summer.
The Office of Nuclear Reactor Regulation has been developing a Commission l
paper which will include a revised schedule for the ABWR review, based on GE's scheduled submittal of a certified final SSAR, a Tier 1 design description, and an integrated set of inspections, tests, analyses, and acceptance criteria (ITAAC) on July 31, 1993.
Based upon GE's schedule, we anticipate that the ACRS' review of the ABWR FSER can be held during January 1994.
The staff believes that the remaining milestones can be completed in this compressed period for several reasons.
The Committee will have significant time to review GE's final SSAR, ITAAC, and Tier 1 information before the FSER is completed.
In addition, the staff is committed to support meetings on FSER chapters with the ACRS, as open items have been resolved. This will minimize Iber A I (lh n ~. n,,
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Mr. Paul Shewmon the number of issues to be reviewed in January 1994.
Both the staff and the ACRS have a difficult job ahead of them to complete the ABWR review. The staff is committed to providing the ACRS with timely support in the review of the ABWR. The staff has scheduled the standard 3-month ACRS review period in the proposed review schedules for the other advanced reactor reviews.
Sincerely, OriginalsW DV James M.Tsy!Or James M. Taylor Executive Director for Operations cc:
The Chairman Commissioner Rogers Commissioner Curtiss Commissioner Remick Commissioner de Planque SECY DISTRIBUTION:
Central File EDO #0008688 ED0 R/F PDR (w/inc)
JTaylor, 17G21 MTaylor, 17G21 JSniezek, 17G21 HThompson, 17G21 TMurley, 12G18 FMiraglia, 12G18 WRussell, 12G18 JPartlow, 12G18 DCrutchfield WTravers RBorchardt PDST R/F PDST GT/F (#0008688)
JMoore, 15B18 OPA BToms, GT8688 PMagnanelli, GT8688 PShea, GT8688 ESBeckjord, RES JKnubel, EDO RMBernero, NMSS ELJordan, AE00 TBoyce NRR Mail Room, (ED0#08688) (w/inc)
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March 18, 1993 The Honorable Ivan Selin Chairman U.S.
Nuclear Regulatory Commission Washington, D.C.
20555
Dear Chairman Selin:
SUBJECT:
ADVANCED BOILING WATER REACTOR (ABWR) REVIEW SCHEDULE During the 395th meeting of the Advisory Committee on Reactor Safeguards, March 11-12, 1993, we discussed the staff's revised estimate of the schedule (proposed in SECY-93-041) for completing its review of the ABWR design.
We also had the benefit of the documents referenced.
We note that in SECY-93-041, the time proposed for our review cf the Final Safety Evaluation Report (FSER) is one month.
In our July 18, 1991, report to you on " Schedules for Advanced Reactor Reviews," we agreed with the staff's estimate of three months for completing our review of the FSER.
It is still our view that three months will be needed to perform a meaningful review, given the proposed schedule for transmitting the information to us.
Regarding our present ABWR review status, our work on the ABWR design certification application stalled in November 1992, pending the development of additional technical information by General Electric Nuclear Energy (GE) and decisions by the NRC staff on a number of important areas such as:
design acceptance criteria / inspections, tests, analyses and e
acceptance criteria, digital control systems, control room and human factor provisions, and severe accident /probabilistic risk assessment considerations interface requirements and representative conceptual designs e
for uncertified portions of the design technical resolution of Unresolved Safety Issues and Generic e
Safety Issues as required by 10 CFR 52.47 closure of open and confirmatory items in the October 1992 e
draft of the FSER EDO --- 00B683
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4 The Honorable Ivan Selin 2
March 18, 1993 closure of open items and concerns from the ACRS Advanced Boiling Water Reactors Subcommittee meetings of August 19, October 21, and November 18-19, 1992 Our subcommittee meetings with the NRC staff and GE were, in general, limited to consideration of the October 1992 draft of the FSER and the initial submittal and first twenty amendments (through March 13, 1992) of the ABWR Standard Safety Analysis Report (SSAR).
We have not met with the staff or GE on these matters since November 1992, although we have planned a subcommittee meeting on severe accidents on March 18, 1993.
We will meet again to complete our review when the staff and GE provide us with reasonably complete final documentation for our consideration.
There are now several additional voluminous amendments to the SSAR to consider, and extensive revision of the FSER is likely.
From the nature of past ACRS open items and concerns on the ABWR and the uncertainty concerning their resolution, we believe that significant problems may still persist.
If it would expedite the schedule, we would be willing to meet with the staff and GE to review portions of the final FSER and associated SSAR beyond Amendment 20 as they are completed and made available.
This would ensure a more timely resolution of any remaining ccncerns and could shorten the three months otherwise needed for our review of the advance copy of the complete FSER package (referred to in SECY-93-041) and preparation of our final report required by 10 CFR 52.53.
Sincerely, i
\\a Paul Shewmon Chairman i
Beferences:
1.
Letter dated February 9,
1993, from Dennis M.
Crutchfield,
- NRR, to Paul Shewmon,
- Chairman, ACRS,
Subject:
Review Schedule for the Advanced Boiling Water Reactor (ABWR) 2.
SECY-93-041, dated February 18, 1993, for the Commissioners from James M.
- Taylor, Executive Director for Operations,
Subject:
Advanced Boiling Water Reactor (ABWR)
Review Schedule
-