ML25196A193
| ML25196A193 | |
| Person / Time | |
|---|---|
| Issue date: | 05/11/1977 |
| From: | Bender M Advisory Committee on Reactor Safeguards |
| To: | Rowden M NRC/Chairman |
| References | |
| Download: ML25196A193 (1) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, D. C. 20555 Honorable Marcus A. Rowden Chairman
- u. s. Nuclear Regulatory Commission Washington, DC 20555 May 11, 1977
Subject:
REPORI' ON PHIPPS BEND NUCLEAR PLAN!', UNITS 1 AND 2
Dear Mr. Rowden:
During its 205th meeting, May 5-6, 1977, the Advisory Committee on Reactor Safeguards reviewed the application of the Tennessee Valley Authority (TVA) for a license to construct the Phipps Bend Nuclear Plant, Units 1 and 2. This application was previously reviewed at a Subcommittee meeting in Kingsport, Tennessee on April 15, 1977 following a visit to the site by Conmittee members on the same day. During its review the Committee had the benefit of discussions with representatives of the TVA, the Nuclear Regulatory Commission Staff, and the General Electric Company.
The Com-mittee also had the benefit of the docwnents listed.
The Phipps Bend plant consists of two 3579 M'"wt reactors of the GESSAR-238 design which uses a BWR/6 boiling water reactor with a Mark III contain-ment. The design of the Phipps Bend nuclear units is identical to that of the Hartsville units on which the Committee reported May 13, 1976.
'!be Staff has issued a Safety Evaluation Report dated April 1977 for the Phipps Bend plant and a Preliminary Design Approval No. PDA-1 dated Decem-ber 22, 1975, for the GESSAR-238 plant.
PDA-1 covers the nuclear island which consists of the nuclear steam supply system, the reactor building, and associated facilities. The TVA will design the turbine island portion and other installations external to the nuclear island.
The plant will be located in Hawkins County in eastern Tennessee, approxi-mately 15 miles southwest of Kingsport.
The site consists of approxi-mately 1,270 acres bordering on the Holston River.
The minimum exclusion area distance measured from the center of the Unit 1 containment building is approximately 2,490 feet.
The low population zone has a radius of 3 miles and included a population of 2,090 in 1970.
The nearest popula-tion center is Kingsport in combination with the suburb of Kingsport North (1970 population 45,056).
1256
Honorable Marcus A. Rowden 2 -
May 11, 1977 An acceleration of 0.25g has been selected for the safe shutdown earth-quake and 0.09g for the operating basis earthquake.
The Committee con-siders these values acceptable for this plant.
The Applicant stated that all matters of concern expressed by the ACRS relating to the Hartsville plant and its use of the GESSAR-238 nuclear island design will be resolved in connection with the Hartsville plant, which will be licensed, constructed, and operated prior to the time simi-lar stages are reached for the Phipps Bend units.
The ACRS recommends that the Staff and the Applicant review and evaluate the probability of loss of all AC power as a function of the duration of such :EX)wer loss and develop criteria and a specific approach to assure that the plant can withsta11d such an event with acceptable reliability.
The proposed temperature limits on suppression fX>Ol water during an A'!WS and structural problems associated with steam condensation require timely evaluation by the Staff. These matters are related to generic Item IIB-3.
The Committee wishes to be kept informed.
Various generic problems are discussed in the Committee's re:EX)rt, "Status of Generic Items Relating to Light-Water Reactors:
Re:EX)rt No. 5," dated February 24, 1977 (Attached).
Those proble.~s relevant to the Phipps Bend plant should be dealt with by the Staff and the Applicant as solutions are found.
The relevant items are:
II-4, 6, 7, 9, 10; IIA-1, 7; IIB-2; IIC-1, 2, 3, 5, IID-2.
The Advisory Committee on Reactor Safeguards believes that the items men-tioned above can be resolved during construction and that, if due consid-eration is given to the foregoing, the Phipps Bend Nuclear Plant, Units 1 and 2, can be constructed with reasonable assurance that they can be op-erated without undue risk to the health and safety of the public.
Sincerely yours,
'Ji/. 11.e-b--
Attachment:
[
- J Ltr. to Honorable M. A. Rowden, "Status of Generic Items Relating to Light-Water Reactors: Rpt. No. 5," dated 2/24/77
[*]Seepages 2287-2330, Volume IV 1257 M. Bender Chairman
Honorable Marcus May 11, 1977 REFERENCES
- 1. Phipps Bend Nuclear Plant, Units 1 and 2, Preliminary Safety Analysis Report, Volumes 1 - 4
- 2. Amendments 1 - 13 to the Preliminary Safety Analysis Report
- 3. Safety Evaluation Report, NUREG 0101, related to the con-struction of the Phipps Bend Nuclear Plant, Units 1 and 2, April 1977
- 4. Letter from Tennessee Valley Authority to Nuclear Reactor Regulation, NRC, concerning information regarding the still water flood level, dated April 22, 1977
- 5. Letter from Tennessee Valley Authority to Nuclear Reactor Regulation, NRC, concerning commitments to design to the new load profile or relocate structures to elevations greater than 19. 5 feet above the suppression pool, dated March 31, 1977
- 6. Letter from Tennessee Valley Authority to Nuclear Reactor Regulation, NRC, concerning commitments regarding resolu-tion of issues on the probable maximum flood, dated March 15, 1977
- 7.
Letter from Tennessee Valley Authority to Nuclear Reactor Regulation, NRC, concerning design criteria for the con-struction of the Central Service Facility substructure wall, dated March 4, 1977
- 8. Letter from Tennessee Valley Authority to Nuclear Reactor Regulation, NRC, concerning the potential impacts of move-ment of the reactor pressure vessels and heads to the Phipps Bend site, dated February 25, 1977 1258