ML20247A998
| ML20247A998 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/31/1989 |
| From: | Liaw B Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| Shared Package | |
| ML20247B004 | List: |
| References | |
| NUDOCS 8909120301 | |
| Download: ML20247A998 (4) | |
See also: IR 05000327/1989014
Text
_ _ _ _ _ _ _ _ _ _ _ _ _ _
- [
%
'
.
UNITED STATES
$
~
NUCLEAR REGULATORY COMMISSION
,
.,,g
$e
WASHING TON, D. C. 20555
.
...../
August 31, 1989
Docket Nes. 50-327
and 50-328
Mr. Oliver D. Kingsley, Jr.
Senior Vice President, Nuclear Power
Tennessee Valley Authority
6N 38A Lookout Place
1101 Market Street
Chattanooga, Tennessee 37402-2801
Dear Mr. Kingsley:
SUBJECT: NOTICE OF VIOLATION, NRC SPECIAL INSPECTION REPORT ON SEQUOYAH
SHUTDOWN BOARD OVERV0LTAGE (NRC INSPECTION REPORT NOS. 50-327/89-14
A*fD50-328/89-14)
This refers to the Nuclear Regulatory Commission (NRC) team inspection conducted
at the Sequoyah Nuclear Plant on April 24 through April 28, 1989. The inspection
was announced by letter dated March 7, 1989. The inspection was conducted to
determinn the adequacy of procedures for managing overvoltage conditions and
also to ettermine whether current plant procedures were adequately implemented
to protect sensitive electrical equipment from damage that would result from
overvoltage. An overvoltage condition existed at the Sequoyah site during diesel
testing on January 21, 1989 during which the Tennessee Valley Authority (TVA)
took no immediate corrective actian. The NRC staff discovered this overvoltage
condition on January 22, 1989 when TVA reported to the staff the failure of
diesel generator 2A-A to limit tre.:1ent overvoltage on the shutdown' boards to
within the Technical Specification limits during load rejection testing.
Previous overvoltage conditions at the site from 1980 through 1986 were identi-
fied in TVA's corrective action program included in the Employee Concerns Special
Programs Element Report 30202.
The inspection determined (1) that plant personnel failed to follow established
procedures, and (2) that some procedures provided inadequate instructions to
plant personnel for assuring proper voltage en the shutdown boards.
Furthennore,
the analysis perfonned in conjunction with Element Report 30202 to assess the
effects of overvoltage on the electrical equipment was inadequate, and the root
cause of overvoltage events was not properly recognized in order to ensure adequate
corrective action. The staff's concerns about the Element Report are considered
inspector followup items.
The failure to follow established procedures is a violation of NRC requirements.
Please include in your response to Violation 50-327/89-14-01, 50-328/89-14-01 a
discussion on how the inadequate procedures identified in Section 6.1 of the
inspection report contributed to the violation and what actions you have taken
to correct this situation. The violation, reference to pertinent requirements,
and elements to be included in your response are described in the enclosed Notice
of Violation.
OFoi
8909120301 890831
'f
ADOCK 05000327
I
t
O
_ - _ . - . _ - _ _
__ _
- _ - -
_-
__
-- _.
_- __ _ ---.- -_-----_-_-- _ - __ - -_-. _ _ _ -__
i
'
.,_
.y
-
.
,
'
..
Mr. Oliver D. Kingsley, Jr. .
-2-
At the ' conclusion of the inspection, these findings were discussed with those
members of your staff identified in the enclosed inspection report.
' ~
In accordance with Section 2.790 of the NRC's " Rules of Practice," Port 2
Title 10, Code of Federal Regulations, a copy of this letter, its enclosure,
and any reply will be placed in the NRC's Public Document Room.
Should you have any questions concerning this letter, please contact us.
Sincerely
Original signed by
B. D. Liaw
B. D. Liaw, Director
TVA Projects Division
Office of Nuclear Reactor Regulation
Enclosure:
As stated
!
- For previous concurrences
see previous ORC
gm
,/
6
.
4Q/IP :TVAg PPM
OFC : TVA:
t/
TVA:
C* : TVA:ADlTP : TVA:AD/P* : T
/
- TV
. ' / _ _._ _ : .. a
.h.
. l _ _r.
_
'
.
W'
...__:.....r..ff..__:.........._:_...._g3..:_..
g
.
..... .
BDL ,aw h :BW1
.
son
- JDo
NAME : FPau i
- EMa i os
- RPii $on
- SBlack
_ _ ___ _ _ : ._ _ L.. jew
. . . ._ : _ _ _ _ . . . _ _ _ _ _ : . . . . . _ _ . . . . . : . . . . N. . a _ _ _ _ _ : _ _ _ . . . . . . . . . : _ _ _ _ _ _ _ _ _ _ _ _ : . . .
_____
8M /89
.: 8/10/89
- 8/9/89
- 8/b/89
- &/1/0:;-
8d89
- 8E@89
DATE :
P f'tEP W
@*ln
0FFICIAL RECORD COPY
poB. FEE-
>x ud
L.we'n>>
< M\\b'
_ _ _ _ _ - - _ _ _ _ _ - _ _ _ _ - _ _ _ _ _ _ _ _ _ _
_ _ _
' . ,
,-
,
,
.
.
Mr. Oliver D. Kingsley, Jr.
-3-
August 31, 1989
i
cc w/ enclosures:
General Counsel
Mr. Kenneth M. Jenison
Tennessee Valley Authority
Senior Resident Inspector
400 West Sumit Hill Drive
Sequoyah Nuclear Plant
ET 11B 33H
U.S. Nuclear Regulatory Comission
Knoxville, Tenrassee 37902
2600 Igou Ferry Road
,
Soddy Daisy, Tennessee 37379
Mr. F. L. Moreadith
i
Vice President, Nuclear Engineering
Mr. Michael H. Mobley, Director
{
Tennessee Valley Authority
Division of Radiological Health
400 West Sumit Hill Drive
T.E.R.R. A. Building, 6th Floor
WT 12A 12A
150 9th Avenue North
Knoxville, Tennessee 37902
Nashville, Tennessee 37219-5404
Dr. Mark 0. Medford
Dr. Henry Myers, Science Advisor
Vice President and Nuclear
Comittee on Interior
Tecnnical Director
and Insular Affairs
Tennessee Valley Authority
U.S. House of Representatives
6N 38A Lookout Place
Washington, D.C.
20515
Chattanooga, Tennessee 37402-2801
Tennessee Valley Authority
Manager, Nuclear Licensing
Rockville Office
and Regulatory Affairs
11921 Rockville Pike
Tennessee Valley Authority
Suite 402
l
SN 1578 Lookout Place
Rockville, Maryland 20852
Chattanooga, Tennessee 37402-2801
Mr. John L. LaPoint
Site Director
Sequoyah Nuclear Plant
Tennessee Valley Authority
P. O. Box 2000
Soddy Daisy, Tennessee 37379
Mr. M. Burzynski
Site Licensing Manager
Sequoyah Nuclear Plant
P. O. Box 2090
Soddy Daisy, Tennessee 37379
County Judge
Hamilton County Courthouse
Chattanooga, Tennessee 37402
Regional Adatinistrator, Region II
U.S. Nuclear Regulatory Commission
101 Marietta Street, N.W.
Atlanta, Georgia 30323
_
.
_
_
__
. _ .
. - _ _ _ _ _ - _ _ _ _ _ _ _ , _ - _ -
w
-*
+
-
,,o.
,,
.
..
i
Mr. Oliver D. Kingsley, Jr.
-4-
DISTRIBUTION:
Docket
NRC PDR
Local PDR
TVA Reading
ADSP Reading
DCrutchfield
BDLiaw
RPierson
BWilson, Region II
LWatson, Region II
BGrimes, NRk
FMiraglia, NRR
SBlack
JDonohew
Edordan, AEOD
ACRS(10)
Inspection Team Members
MSimms
TQuay
BZalcman
FPaulitz
EMarinos
1
_ . _ _ _ _ _ _ . _ . _ _ . _ . . _ . _ . _