ML16152A706
| ML16152A706 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/13/1988 |
| From: | Pastis H Office of Nuclear Reactor Regulation |
| To: | Tucker H DUKE POWER CO. |
| Shared Package | |
| ML16152A707 | List: |
| References | |
| GL-81-21, NUDOCS 8806210322 | |
| Download: ML16152A706 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 June 13, 1988 Docket Nos.:
50-269, 50-270 and 50-287 Mr. H. B. Tucker, Vice President.
Nuclear Production Department Duke Power Company 422 South Church Street Charlotte, North Carolina 28242
Dear Mr. Tucker:
SUBJECT:
TRAINING PROGRAM ON NATURAL CIRCULATION COOLDOWN Re:
Oconee Nuclear Station, Units 1, 2 and 3 By letter dated June 5, 1985, we sent you a Safety Evaluation (SE) on Generic Letter 81-21, "Natural Circulation Cooldown," and your assessment of the Oconee Nuclear Station's procedures and training program to deal with natural circulation cooldown events which result in the formation of a steam bubble in the upper head region of the reactor vessel. Within the SE, we concluded that for Oconee Nuclear Station you can perform a natural circulation cooldown to Decay Heat Removal System actuation in approximately seven hours without void formation.
Furthermore, we requested that you describe the training program that deals with the prevention or mitigation of reactor vessel voiding. Specifically, we requested that you confirm and discuss the following items about your training program:
- 1. The training program addresses how voiding occurs and its consequences;
- 2. The program discusses the signs which indicate that voiding is occurring;
- 3. The program covers the procedures that prevent and mitigate voiding;
- 4. The program discusses the St. Lucie Unit 1 event of June 11, 1980; and
- 5. As part of the training, there is proper simulator modelling of upper head voiding.
Your response and our assessment of each of the five items is discussed in the attached Safety Evaluation supplement. The responses to the first four items, E3(3621(3
)02693
__PDR ADOCK 50 PDR.
Mr. H. B. Tucker
-2 we have found acceptable. Your response to item 5 was ambiguous. Please send us an update or schedule on the status of simulator modelling. We request you respond within thirty days of receipt of this letter.
Sincerely, Origina-Signed by Helen N. Pastis, Project Manager Project Directorate 11-3 Division of Reactor Projects 1/11
Enclosure:
Safety Evaluation Supplement cc: w/encl.
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Mr. H. B. Tucker Oconee Nuclear Station Duke Power Company Units Nos. 1, 2 and 3 cc:
Mr. A. V. Carr, Esq.
Mr. Paul Guill Duke Power Company Duke Power Company P. 0. Box 33189 Post Office Box 33189 422 South Church Street 422 South Church Street Charlotte, North Carolina 28242 Charlotte, North Carolina 28242 J. Michael McGarry, III, Esq.
Bishop, Liberman, Cook, Purcell & Reynolds 1200 Seventeenth Street, N.W.
Washington, D.C. 20036 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 525 1700 Rockville Pike Rockville, Maryland 20852 Manager, LIS NUS Corporation 2536 Countryside Boulevard Clearwater, Florida 33515 Senior Resident Inspector U.S. Nuclear Regulatory Commission Route 2, Box 610 Seneca, South Carolina 29678 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 Mr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 Office of Intergovernmental Relations 116 West Jones Street Raleigh, North Carolina 27603 Honorable James M. Phinney County Supervisor of Oconee County Walhalla, South Carolina 29621