ML20006A456
| ML20006A456 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 01/19/1990 |
| From: | Michael Ray TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9001260283 | |
| Download: ML20006A456 (6) | |
Text
{.
I 9e h
TENNESSEE VALLEY AUTHORITY
+
CHATTANOOGA. TENNESSEE 374ot i:
SN 157B Lookout Place L
JAN 191990 t
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C.
20555 Gentlemen:
f l
In the Matter of
)
Docket Nos. 50-327 Tennessee Valley Authority
)
50-328 i
s SEQUOYAH NUCLEAR PLANT (SQN) UNITS 1 AND 2 - IMPLEMENTATION OF LONG-TERM CORE SHUTDOWN MARGIN CORRECTIVE ACTION COMMITMENTS This letter responds to a request by NRC in a letter from Suzanne Black to O. D. Kingsley, Jr., dated April 14, 1989, for TVA to inform NRC when TVA has implemented the identified longer-term corrective actions and commitments.
These actions were previously described in two letters to NRC dated i
October 5, 1988, and October 14, 1988, and also in Licensee Event Report 1-88045, Revision =1, dated January 25, 1989.
L TVA has completed implementation of the subject commitments that are summarized in the attached enclosure.
The commitments have been tracked to completion on SQN's corporate commitment tracking system (CCTS); closure documentation is appropriately on file for further review.
Identification of additional actions resulted from completion of two of the commitments involving investigation and review efforts. These actions are described in and identifled as additional commitments in Enciousre 2.
If you have any questions concerning this submittal, please telephone M. A. Cooper at (615) 843-6651.
Very truly yours, l
TENNESSEE VALLEY AUTHORITY M
4 Ma}
Nuclear Litensing and Regulatory Affairs Enclosures cc: See page 2 9001260283 900119 ADOCK-.0500g7 O
DR i
\\\\
An Equal opportunity Employer
[
9
_a_
r o
U.S. Nuclear Regulatory Commission
.g g g g cc (Enclosures):
Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission-
-One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Assistant Director t
for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission r
Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tegn,essee 37379 i
i i
r b*
7 g,
, f, e
e ENCLOSURE 1 b
Il LONG-TERM CORRECTIVE ACTIONS p
_ Incorporation of more extensive training in posttrip procedures in the 1
annual retraining cycle for operators.>
Commitment:
LER 327/88045. Revision 1 c;
h/
" Training to licensed shift operators on the steam dump control modification and the FWI setpoint change will be included in the 1989 U
requalification. training program."
Corrective Action: CCTS NC0880270007 h,
Training to licensed shift operators on the steam dump control.
modifications.and the FWI setpoint change was included in the 1989 L
requalification training program.
This training sequence is now complete.-
Commitment:
LER 327/88045. Revision 1 i
. A posttrip cooldown scenario will be incorporated into the annual-
'requalification training program.
The shift operating crews will be.
[,
formally evaluated during week one 1989 requalification training on b
~their actions during this scenarlo.
Corrective Action: CCTS NC0880270008_
.A.posttrip cooldown scenario was incorporated into the annual requalification training program.
The shift operating crews.were.
formally evaluated during Week one of the 1989 requalification
. training on their response to this scenarlo.
. Commitment:
Letter Dated October 5. 1988 L
. In addition, all licensed operators will receive-training (postrestart unit 1) on AFH manual control:during operator.
b, requalification training week 6.
This training will be completed-by i
December 31, 1988."
h-Corrective Action: CCTS NC0880159006 L
F All licensed operators received training (postrestart Unit 1) on AFH f-,
manual control during operator requalification training Week 6.
This commitment was completed on December 23, 1988.
p Training instructions will monitor control room operations.
E Commitment:
LER 327/88045. Revision 1
(-,
"An Operations training instructor will observe MCR activity on a monthly basis to etaluate licensed and requalification operator training effectiveness. This action will continue untti results indicate no further action is required."
+
A i
@N pg A.,
w E
Corrective Action: CCTS NC0880280003 Operations' training instructors observed MCR activities for three
' continuous months, noting good operating and communications skills-
. were exhibited by the shift operators.
No problems were identified.
These observations were documented using the Nuclear Training _ Standard Practice TCA-100, "In-Plant Activity for Instructors with Plant Specific Technical Instructional Responsibilities," that includes an
. Instructor In-Plant Activity Plan.
Verify accuracy of simulator modeling, h
Commitment:
LER 327/88045, Revision 1 "The simulator modeling will be verified before implementation of any
- future posttrip/ incident investigation identified corrective actions
. requiring simulator training."
L Corrective Action: CCTS NC0880280004 F
SQN Training Instruction SQTO-28, " Simulator Training," has been revised to require that simulator modeling be vertfled before implementation of required simulator training that results from a L
posttrip/ incident investigation. The modeling verification shall
[
ensure the simulator fidelity is as close as possible to the actual-event.
II.- BROADER AREA COMMITMENTS o
Commitment: Posttrip Review - LER 327/88045. Revision 1-
"TVA will assess management involvement in the posttrip/ incident review process and associated corrective action."
I Correct 1ye Action: CCTS NC0880280005 an'd NC0880159007 L
SQN Administrative' Instruction (AI) 18, file package 18, Part B, " Reactor b,
Trip Report,"'was incorporated into a new procedure AI-18.78, " Post Trip
, Review Report," and revised to provide further gutdance and enhanced-management involvement in performance of posttrip reviews.
The-process for. investigation and reporting abnormal events has been enhanced and formalized into a separate procedure AI-18.18, " Reporting of Abnormal o
Events."
' Commitment:
LER Review - LER_327/88045 "TVA is presently conducting a review of Leks resulting from ESF actuations including reactor trips for 1988 to identify common root causes and/or insufficient corrective action."
Corrective Action:
CCTS NCO'80280006 i
o The review identified some weaknesses in the identification of interim or long-term corrective action.
This reinforced the need for enhancement of
- the incident investigation process previously discussed. TVA will
'continueito monitor and trend abnormal events to assess the effectiveness of corrective actions, w,
m m
C 3; 1
-3.
' Commitment 3 - Control and Review of Vendor Documents "TVA.will investigate the' possibility of making the Westinghouse Electric L
Corporation document, ' Precautions, Limitations and Setpoints For Nuclear N
Steam Supply Systems,' a controlled document for SQN."
,Qqrrective Action: CCTS_NC0880159011 A task force was formed to investigate making the Precautions.
Limitations and Setpoints (PLS) document a controlled document for SQN.
This group concluded.that the PLS document should be controlled and can
- _L1 be controlled by TVA. Westinghouse will provide process limit-E calculations to support the setpoints in the PLS document, and the PLS h
will be updated to reflect current plant configuratton including modifications implemented during the respective Cycle 4 refueling outages. TVA'will make the PLS a TVA controlled. document by February.1,.
[:
1991, which is approximately two months after the Unit 2 Cycle 4 outage.
Commitment 4 - Emergency Operatino Procedures Review "TVA will review the EOP step deviation documents for inappropriate
).
deviations from_the Westinghouse Owners Group-(HOG) guidelines."
Corrective Action: CCTS NC0880270002 h
The emergency operating procedure review has been completed, and several p
comments and concerns were identified. TVA discussions with lestinghouse p
indicated that there are no immediate actions required. Ado 1tional t
justifications to clarify the deviations to the step deviation document will resolve the majority of the comments. Appropriate actions will;be.
t 7
implemented to resolve the Group I comments and concerns by June'1, 1990.
s r
I 4
f.
M
. y..
L
).
lI
[
l
, ll
y
- h. *
~
ENCLOSURE 21
,3 0
').- The PLS will be updated to' reflect current plant configuration.. including r,7 modifications implemented during the respective Cycle 4 refueling outages; 1VA will make the PLS a controlled document by February 1, 1991, s
approximately.two months after Unit 2 Cycle 4.
y
= 2. ' Appropriate' actions will be' tmplemented 'to resolve the1 comments and
'. concerns noted in Group.1 of the Westinghouse review of.the SQN E0Ps by.
- June-161990.-
,4 :
V-
.Ls M
n
.(f.[k #
s
- e
' i V
[hN_f 'f # };,
y 9 l) -
f3i f}:
i !'
'5
~
.f',
p' y
. j 'g. ---
r-:
,t b
)'
-\\
73 i
,(':
I g
,,'I g
r g.
t I
i 3-
- N g
b 7
f.
t sy; 4
l, } 'i 4
h I
.1
[
1 p.
-e