ML19291E415
| ML19291E415 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 11/20/1981 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Fraley R Advisory Committee on Reactor Safeguards |
| Shared Package | |
| ML19291E416 | List: |
| References | |
| FOIA-82-164, TASK-2.C.3, TASK-TM NUDOCS 8112180064 | |
| Download: ML19291E415 (5) | |
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x, Raymond F. Fraley, Executive Director, Advisory. N mittc% fin e ':
IEMDRANDUM FOR:
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Reactor Safeguards FR0",:
Harold R. Denton, Director, Office of Nuclear Reactor Regulation SU3 JECT:
SEIS!'IC-INDUCED AND OTHEP. INTERACTIONS DETWEEN N04-S AFETY AND SAFETY SYSTEMS In response to your memorandum to me on this subject, dated August 12, 1981, the fol-lowing discussion summarizes the NRR program on adverse systems interactions in LURs.
Under a program developed in connection with TMI Action Plan Item II.C.3, our efforts over the last year were directed principally toward surveying available methods and developing regulatory guidance for performing cor.prehensive systems interaction analyses, and in reviewing limited systems interaction studies (which considered seismic initiators only) performed at the Diablo Canyon and the San Onofre facilities.
Currently, our systems interaction staff is involved in developing the interim guidance for use on some selected plants later this year, and in working out the final details of the systems interaction analysis to be performed on the Indian Point-3 facility.
The Indian Point-3 licensee (PASNY) has proposed a systems interaction analysis program which goes significantly beyond anything which has been done to date, and which will address much more than just seismic initiators. Our staff has now completed its re-view of PASNY's draft proposal and comments on that proposed progran were provided to PASMY at a meeting with the licensee on July 24, 1981. The reviscJ program is ex-pected to be available in early November 1981. As you know, we have requested a meeting with the appropriate ACRS subcommittee to discuss a revised PASNY systems inter-action program which will address our review coments. We understand that the Ccamittee has established a tentative schedule of January for the requested meeting.
In the longer term, our plan is to issue final guidance for the performance of systems interaction analyses based on our experience from the Indian Point-3 study and the analyses at selected plants. Enclosure I shows the major milestones in the program, and is a draf t description of the options considered for implementing the in-terim guidance on selected LURs. We look forward to further discussion of these matters with the Committee.
0%ui Signd by H. R. Detton Harold R. Denton, Director Office of Nuclear Reactor Regulation
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MEMOPM DUM FOR:
Raymond F. Fraley, Executive Director, Advisory Comittee on Reactor Safeguards FROi:
Harold R. Denton, Director, Office of Nuclear Reactor Regulation
SUBJECT:
SEISMIC-INDUCED AND OTHER INTERACTIONS BETWEEN NOV-SAFETY AND SAFETY SYSTEMS In response to your nemorandun to me on this subject, dated August 12, 1931, the fol-lowing discussion sumarizes the NRR program on adverse systems interactions ir. L'. irs.
Under a program developed in connection with TFI Action Plan Item II.C.3, our efforts over the last year were directed principally toward surveying available methods and developing regulatory guidance for perfoming comprehensive systems interaction analyses, and in reviewing limited systens interaction studies (which considered seismic initiators only) perfomed at the Diablo Canyon and the San Onofre facilities.
Currently, our systems interaction staff is involved in developing the interim guidance for use on some selected plants later this year, and in workiry out the final details of the systcu interaction analysis to be perfomed on the Indian Point-3 facility.
The Indian Point-3 licensee (PASNY) has proposed a systems interaction analysis program which goes significantly beyond anything which has been done to date, and which will address much more than just seismic initiators. Our staff has now completed its re-view of PASNY's draft proposal and coments on that proposed program were provided to PASMY at a meeting with the licensee on July 24, 1931. The revised program is ex-pected to be available at the end of October 1931. As ycu know, we have requested a neeting with the appropriate ACRS subcomittee to discuss a revised PASNY systems inter-action program which will address our review coments.
We understand that the Comittee has established a tentative schedule in mid-November for the requested meeting.
In the longer tem, our plan is to issue final guidance for the performance of systems interaction analyses based on our experience from the Indian Point-3 study and the analyses 3t selected plants. Enclosure I shows the major milestones in the program, and is a draft description of the options considered for implementing the interim guidance on selected URs. Uc look forward to further discussion of these matters with the Comittee at an early date.
Harold R. Denton, Director Office of Nuclear P.eactor Regulation
Attachment:
Program Schedule / Status Distribution:
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MEMORANDUM FOR: Raymond F. Fraley, Executive Director, Advisory Committee on Practor Safeguards FR0ft:
Harold R. Denton, Director, Office of Nuclear Reactor Regulation SU3 JECT:
SEISMIC-INDUCED AND OTHER INTERACTIONS tiETHEEN N0ff-SAFETY AND SAFETY SYSTEMS In response to your memorandum to me on this subject, dated August 12,1981, the following discussion summarizes the NRR program on adverse systems interactions in UIRs. Under a program developed in connection with TMI Action Plan Item II.C.3, our efforts over the last year were directed principally toward surveying available methods and developing regulatory guidance for performing comprehensive systems interaction analyses, and in reviewing limited systems interaction studies (which considered seismic initiators only) performed at the Diablo Canyon and the San Onofre facilities.
Currently, our systens interaction staff is involved in developing the interim regulatory guidance for use in pilot studies to be initiated later this year, and in working out the final details of the systems interaction analysis to be performed on the Indian Point-3 facility. The Indian Point-3 licensee (PASNY) has proposed a systems interaction analysis program which goes significantly beyond anything which has been done to date, and which will address much more than just seismic initiators.
Our staff has now completed its review of PASNY's draft proposal and comments on that proposed program were provided to PASNY at a meeting with the licensee on July 24, 1981. The revised program is expected to be available at the end of October 1981. As you know, we have requested a necting with the appropriate ACRS subcommittee to discuss a revised PASNY systems interaction program which will address our review conaents. He understand that the Committee has established a tentative schedule in mid-November for the requested meeting.
In the longer tera, our plan is to issue final guidance for the performance of systens interaction analysis based on our experience from the Indian Point-3 study and the pilot reviews. He look forward to further discussion of these matters with the Cornittee at an early date.
liarold R. Denton, Director Office of Nucletr Reactor Regulation
Attachment:
Progran Schedule / Status Cn RRAB RDG (PsETYPED 9/14/81 - SEE PREVIOUS CONCURRENCES)A R
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- $EMDPJJDUM FOR: Raymond F. Fraley, Executive Director, Advisory Committee on Reactor Safeguards FROM:
Harold R. Denton, Director,~0ffice of Nuclear Reactor Regulation
SUBJECT:
SEISMIC-INDUCED AND OTHER INTERACTIONS BETWEEN NON-SAFETY AND SAFETY 3YSTEMS In response to your memorandum to me on this subject, dated August 12,1931, the following discussion summarizes the NRP. program on adverse systems interactions in LWRs.
Under a program developed in connection with TMI Action Plan Item II.C.3, our efforts over the last year were directed principally toward surveying available methods and developing regulatory guidance for perfoming comprehenFve systems interaction analyses, and in reviewing limited systems interaction studies (which considered seismic initiators only) perfomed at the Diable Canyon and the San Onofre facilities.
Currently, our systems interaction staff is involved in developing the interim regulatory guidance for use in pilot studies to be initiated later this year, and in working out the final details of the systems int'eraction analysis to be performed on the Indian Point-3 facility.
The Indian Point-3 licensee (PASNY) has proposed a systems interaction analysis program which goes significantly beyond anything which has been done to date, and which will address much more than just seismic initiators.
Our staff has now completed its review of PASNY's draft proposal and comments on that proposed program iere provided to PASNY at a meeting with the licensee on July 24,1981 (Meet g Summary attached).
The revised program is expected to be available at the end of September 1981.
As you know, we have recuested a meeting with the appropriate ACRS subcommittee in early-to-nid October to discuss a revised PASNY systems interaction prograt which will address our review comments. We understand that the Committee will consider the schedule for the requested meeting at the September ACRS meeting.
In the longer term, our plan is to issue final guidance for the perfomance of systems interaction analysis based on our experience from the indian Point-3 study and the pilot reviews. We look forviard to further discussion of these matters with you at an early date.
9t :d Scrd by H. R. Demon Harold R. Denton, Director Office of Nuclear Reactor Regulation Attachment.
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,1 ATTACHMENT TABLE STATUS OF SYSTEMS INTERACTION PROGRAPt MILESTONE STATUS Evaluation of Diablo Canyon 10/80 (NUREG-0675, Supp 11)
Survey of Methods 1/81 (NUREG/CR-1859,1896,1901)
Evaluation of San Onofre 2/3 5/81 (NUREG-0712, Supp 2)
Interim Guidance 12/81 Evaluation of Indian Point-3 3/82 Evaluation of Pilot Reviews 3/83 Final Guidance 10/83