ML17346A405
| ML17346A405 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 06/21/1984 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| References | |
| NUDOCS 8406260588 | |
| Download: ML17346A405 (4) | |
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UNITEDSTATES NUCLEAR'REGULATORY COMMISSION WASHINGTON, D. C; 20555.
JUN 2~I MEMORANDUM'OR:,
C.J'., Hel;temes;. Jr,.Director.
Off.ice; for Analysis and:,
Eval'uation'f,'perational.
Data FROM"..
SUBJECT.':;
'Harol'd. Denton,, Director Office of'Nucl'ear Reactor Regul'ation:
AEOD'. CASE STUDY REPORT'C401')
"L'OW, TEMPERATURE OVERPRESSURIZATION EVENTS AT'TURKEY POINT UNIT'"
We 'have reviewed the recently completed AEOD Case'tudy on, Low Temper'ature Overpressuri'zation Events at Turkey Point Unit. 4'..
The report initially focused on the two events that; occurred. at Turkey Point. during November.
1981 and then expands to discuss NRR's.handl:.ing: of the, generic. issue.,
The case study points out. that the. NRR review: of.low temperature overpressure: protection system (LTOPS) for operating plants,. whi'ch: has, been;.ongoing since: the. late, 1970's,. is. still, incompl'ete..
It, correctly; poi'nts out that some plants. were reviewed. and:
approved'ithout, LTOP'echnical; Specifications-,
whil'e: other. plants'ere approved with, Technical'pecifications.
that. we now consider to be: inadequate..
The. report concludes: that; (1')~ nearly 75% of: operating reactors. need.'odifications and(or upgrades; to their LTOPS: Techni'cal'pecifications, and (2) the implementation of this can be, accomplished under the: staff's current program: MPA B-04, "Reactor Vessel'verpressure.
Protection."
We are in techni'cal'greement wi'th the recommendations made in: the case study.
Considering both. the. frequency of potential'verpressurization
- events, and. the number of events invol,ving the; inoperability of. LTOPS'rains, we agree that additional, regul'atory actions should, be. pursued..
Although I woul'd; prefer to resolve: the LTOPS issue as quickly as possible (i.e.,
impl'ement: the recommendations, via MPA'-04), I do not consider all the AEOD recommended changes'o the. Technical Specifications to be within the or iginal,'cope of the'eneric, issue..
The recommended.
changes consist-of both new requirements and new interpretations to. existing regulatory requirements and-represent significant deviations from licensee submittals that have previously been reviewed and approved: by the staff.
Therefore, I believe that the LTOPS issue cannot be resolved completely through the existing MPA B-04 program..
8406260588 84062i PDR ADOCK 05000251 8
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C. J. Heltemes, Jr.
JUN 31]8N Therefore, I have decided that these issues must be included in a new generic issue.
Accordingly, NRR/DSI will prepare a paper.
by June 30, 1984 for prioritization as a generic issue.
This paper, which will address a'll remaining issues including those raised by AEOD, will be prioritized.by DST/SPEB in accordance with Office Letter No. 40.
Orimhal QP@ 4
- g. R.
Scat'arold R. Denton, 'Director Office of Nuclear Reactor Regulation L
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