ML19330B033
| ML19330B033 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/16/1980 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Parris H TENNESSEE VALLEY AUTHORITY |
| References | |
| FOIA-81-204 NUDOCS 8007300061 | |
| Download: ML19330B033 (3) | |
Text
3 Dk[
%c't, UNITED STATES
?
/
NUCLEAR REGULATORY COMMISSION t
{
j WASHINGTON. D. C. 20555 k..v /
JUL 161980 Docket Nos. 50-259 and 50-220 Mr. Hugh G. Parris Manager of Power Tennessee Valley Authority 500A Chestnut Street Tower II Chat a nooga, Tennessee 37401
Dear Mr. Parris:
The NRC staff has been directed by the Comission (Order CLI-80-21, May 23, 1980), to conduct tests on fire protection systems in operating power plants. Accordingly, the NRC staff has selected the north wall of the reactor building, elevation 593.0, at Browns Ferry Unit Nos. I and 2 as a possible test subject. This area was selected because it represents a typical area that meets the guidelines of Appendix A to Branch Tech-nical Position 9.5-1.
Our proposed plan is to conduct a test on a mock-up of a portion of the above reactor building area and accordingly, we are interested in information necessary to replicate a portion of this area.
We request your cooperation and assistance in providing this information.
We would like to schedule a meeting at the Browns Ferry Plant for examining the north wall of the Reactor Building and reviewing records related to this area. Our examination would determine the specific portion of this area which would be replicated. Our review of the records would determine the specific records and information which we would then request to be sent to us. As a minimum, our review would include the following:
1.
Cable tray and cable conduit layouts and details in the Reactor Building Area.
2.
Cable specifications including relative mix and fill in trays in conduits.
3.
Locations of redundant safety cables.
4.
Fire detection and suppression systems layouts and details.
5.
Ventilation within the Reactor Building Area during operation.
It may be possible to make measurements on air flow on site using our laboratory personnel during the visit.
We request that you have the above information available in a meeting room for our visit so that we can minimize the time required.
soo7ao.o06/'
X Mr. Hugh G. Parris JUL 161980 The purpose of the test is to confirm a power plant fire protection system designed to current NRC guidelines and approved by the NRC. Accordingly, the test mock-up should be as close a replication of a portion of the north wall of the Reactor Building Area as possible, including all fire protec-tion measures. We intend to conduct two tests using a simulated spill of two gallons of combustible liquid such as heptane confined to a floor area of 25 ft below the exposed cable trays. The first test will use the fire suppression system as designed and installed in this area.
The second test will assume that the fire suppression system does not function and suppression will rely on the detection of the fire by normal means in your plant and the subsequent use of your fire brigade.
In order to make this test meaningful, we request that you conduct an unannounced fire drill simulating a fire in the Reactor Building Area (EL.593.0) so that we can determine a suitable delay time for your fire brigade for a fire in this area. We request that you inform your resident inspector prior to the test so that he can be present as an observer. Also, we request a copy of your report of the fire drill.
So that we can arrange a specific time for our visit, we request that you indicate your agreement to participate in this program as soon as possible.
Sincerely,
]h-c' Darrell G. Eisenhu ', Director Division of Licensing cc: See next page
[-.
TY Mr. Hugh G. Parris cc:
H. S. Sanger, Jr., Esquire General Counsel Tennessee Valley Authority 400 Commerce Avenue E 118 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, Alabama 35611 m
,