ML20005B761
| ML20005B761 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/24/1981 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Parris H TENNESSEE VALLEY AUTHORITY |
| References | |
| NUDOCS 8109020091 | |
| Download: ML20005B761 (3) | |
Text
-'
)ccfcd'R/c
~
[$A" !Q,,
Docket Hos. 50-259, 50-260 AUG z4 Jggg g
((
and 50-296 AUG 2 61981 O
( u.a. % stem %
Mr. Hugh G. Parris j
ms e
rianager of Power "k D TIM
-s Tennessee Valley Authority 0
4' 500 A Chestnut Street, Tower II Chattanooga, Tennessee 37a01 RE-BROWNS FERRt UNIT NOS. 1, 2 AND 3
Dear Mr. Parris:
On.luly 2,1931, we sent a letter to all licensees who have requested approval to operate on a continuing basis at pcuer levels above 507. with only one recirculation 1 coo in the event the other loop is inopert.tive. You and other BilR licensees received a copy of one of these letters since we expect most BWR facilities would like to have this flexibility. In the letter we proposed a neeting to obtain a better understanding of what night have caused variations in jet pump flow and related parareters at Browns Ferry Unit No.1 during single loop operation and how this incident should affect approval of single loop operation at other facilities.
You have indicated to your NRC project manager that you are interested in attending the proposed meeting. The reeting will be held at 9:00 A.M.,
Wednesday, September 9,1981 in room P-113, Phillips Building, 7920 Norfolk Avenue, Bethesda, Maryland. You are renuested to advise your project manager of the people who will ne attending this necting from your organization.
Sincerely, Orfginal Signed by T. A. Ipportto Thomas A. Ippolito, Chief Operating Reactors Branch #2 Division of Li ensing
Enclosure:
Meeting Agenda cc w/ enclosure See next page Distribution:
Docket File NSIC C+
NRC PDR TERA Local PDR S. Norris ORB #2 Reading ACRS (10)
D. Eisenhut J. Heltemes, AE00 0 ELD R. Clark OI&C '3'
. 0.
M.
om cc>
..,7....,,3..
. 3,3......... 3.,.y.,31.....
-~
~-
-- - ~-
-~
~
- ~ ~ *
~
- ~~
8109020091 810824 EchDRADOCK05000h OFFICIAL RECORD COPY usam mi._meco
Proposed Meeting with BUR Applicants and Licensees on Single Loop Operation Purpose of Meeting:
1.
To determine what may have caused the jet pumr, flow and other variations experienced by Browns Fr.rry Unit i during single loop operation and 2.
Evaluate whether the Browns Ferry experience should result in power limits for other BWRs operating on a single loop.
Agenda:
1.
Discussion of what may have caused the unexpected variations in operating parameters when Browns Ferry Unit i exceeded about 60 percent rated power while operating with only one recirculation loop.
2.
Discussion of parameters affected at Browns Ferry 1 (i.e., jet pump flow, neutron flux, core flow, core pressure drop, etc.)
3.
Discussion of whether the Browns Ferry 1 experience would be expected at other BWRs operating on one recirculation loop.
If wre safety limits likely to be violated or cause complications with respect to core stability, core flow symmetry, pump cavitation or damage to the jet pumps and reactor vessel internals.
4.
Discussion of the benefits vs. potential problems and cost of testing single loop operation in another BWR that is instrumented to detect what parameters are affected.
5.
' Evaluation of whether sinhle loop operation at p;wer levels about 50 to 55 percent is a safe and prudent means of reactor operation.
Mr. Hugh G. Parris cc:
H. S. Sanger, Jr., Esquire Genera' Counsel Tennessee Valley Authority 400 Commerce Avenue E llB 33 C Knoxville, Tennessee 37902 Mr. Ron Rogers Tennessee Valley Authority 400 Chestnut Street', Tower.II Chattanooga, Tennessee 37401 Mr. H. N. Culver 249A HBD 400 Commerce Avenue Tennessee Valley Authority Knoxville, Tennessee 37902 Robert F. Sullivan U. S. Nuclear Regulatory Commission P. O. Box 1863 Decatur, Alabama 35602 Athens Public Library South and Forrest Athens, Alabara 35611 Mrs John F. Cox
' Tenqes~see Valley Author'ty W9-D 207C 400 Commerce Avenue Knoxville, Tennessee 37902 Mr. Herbert Abercrombie Tennessee Valley Authority P. O. Box 2000 Decatur, Alabama 35602 M
O
_... _, _.