ML20039E517
| ML20039E517 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/01/1981 |
| From: | Jensen W NRC |
| To: | |
| Shared Package | |
| ML111090060 | List:
|
| References | |
| FOIA-80-515, FOIA-80-555 NUDOCS 8201070402 | |
| Download: ML20039E517 (4) | |
Text
,
UNITED STATES OF AMERICA NUCLEAR REGULATORY C0ff.ISSION BEFORE TifE ATOMIC SAFETY AND LICENSING BOARD In the Mattor of
)
)-
METROPOLITAN TDISON COMPANY,
)
DOCKET No. 50-289-et al.
)
i (Three Mile Island Nuclear j
Station, Unit 1 NRC STAFF TESTIMONY OF WALTON L. JENSEN, JR.
REGARDING TRANSIENT AND ACCIDENT ANALYSIS AND PROCEDURES EUARU QUL511UN ll i
4 i
BOARD QUESTION "The board is not satisfied with the st.iff findings in the SER with respect l
to Recommendation 2.1.9.C (transients and accidents) of NUREG-0578. The j
staff concludes that satisfactory progress has been made and the item is
)
complete.
SER, pp. B-10, C8-49. According to Table 8-2, the analyses and procedures were scheduled for completion by early 1980. We observe that in l
May of this year, it was reported that "the Staff is performing a generic review of transients and other accidents in accordance with Recommendation j
2.1.9 of NUREG-0578 (NUREG-0667, p. 5-26).
We expect the licensee and the staff to present evidence that the require-j ments on p. A-45 of NUREG-0578 will be met and to explain the schedule for i
meeting those requirements.
The board, as well as the s.aff, must have sufficient information to decide whether satisfactory progress is being.
1 made."
i 8901070402 810403' PDR FOIA 4
MADDEN 80-515 PDR-
Response
The TMI-2 Lessons Learned Task Force reconnended in Section 2.1.9 of NUREG-0578 that plant emergency procedures be_ developed based on plant analyses of small break LOCA, inadequate core cooling and transient and accidents.
The transients i
and accidents to be considered should include the design basis events of i
i i
Section 15 of each FSAR and should include the effect of single failure of l
.m cach system required to function and the effect of operator error. Using event trees and computer analyses, operator guidelines are to be developed i
i which will be developed into plant emergency procedures and utilized in operator training.
l The requirements of Section 2.1.9 of NUREG-0578, "TMI-2 Lessons Learned Task i
1 Force Status Report and Short-Tenn Reconmendations" have been incorporated in Task I.C.1 of the TMI-2 Action Plan.
The NRC staff proposed a schedule
~
t for completion of this task in " Letter to All Licensees of Operating Plants L
and Applicants for Operating Licenses and Holders of Construction Permits" dated September 5, 1980.
This schedule has not yet been approved by.the NRC Commissioners.
The schedule proposed by the staff required that guidelines for 4
development of plant procedures be submitted to the NRC by January 1,1981 and that the procedures be revised by January 1, 1982.
4 r
j As discussed on page C8-49 of the TMI-1 Restart SER NUREG-0680, the Babcock
& k'ilcox Plant Owners Group of which Metropolitan Edison is a member has committed to accomplish the requirements of Recommendation 2.1.9 as part of i
e t
. the ATOG program.
This program is designed to develop emergency procedures for treating the symptoms of transients and accidents rather than requiring that the operators identify the plant failure which occurred in order to select the correct procedure.
Any accident or transient including LOCA which produces abnormal plant conditions should be covered by the revised emergency-procedures.
Because of plant differences each of the B&W plants will require different guidelines and emergency procedures. These will be completed in a sequential schedule developed by the Owners Group.
The lead plant in the sequence is ANO-1. A draft of the operational guidelines-and supporting analyses for ANO-1 was completed in July 1980 and copies were provided to the NRC staff in a meeting with the Owners Group August 21, 1980. The Owners Group also presented a schedule for development of Event Tree's, Analysis and guidelines for the other B&W plants. A copy is attached to this testimony.
The schedule indicates that guidelines for TMI will be completed in February of 1981.
For the interim period before emergency procedures based on ATOG are completed, the NRC is reviewing the current Emergency Procedures for TMI-1. This review is described on pages Cl-15, Cl-16, C2-4, C2-5, C6-15 and C6-16 of NUREG-0680.
This review will be completed before restart. The operators at TMI-1 are also being retrained to deal with events similar to those which occurred at TMI-2. This training is discussed on pages Cl-6, C2-4 and C2-16 of NUREG-0680.
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