ML20034F991
| ML20034F991 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 02/26/1993 |
| From: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Hall D HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 9303080042 | |
| Download: ML20034F991 (5) | |
Text
pB 8EC UM7E D STATES 4
4 NUCLEAR REGULATORY COMMISSION
[ hv, (",4*
f ')g j
R EGloN IV 611 RVAN PLAZA DRIVE, SUITE 400 o,
AH LINGToN, TEXAS 760118064 g
j FEB 261993 Docket: 50-498 50-499 License: NPF-76 NPF-80 Houston Lighting & Power Company ATTN: Donald P. Hall, Group Vice President, Nuclear P.O. Box 1700 i
Houston, Texas 77251 Gentlemen:
This acknowledges the granting of a one-time temporary waiver of compliance to South Texas Project (STP), Unit 2, from the action required in Technical Specification (TS) Limiting Condition for Operation (LCO) 3.7.1.2.b.
Your letter (ST-HL-AE-4336), dated February 25, 1993, provides the written basis for the temporary waiver of compliance that you verbally requested on February 25, 1993.
At 10:48 p.m. (CST) on February 22, 1993, STP, Unit 2, entered TS LCO l
Section 3.7.1.2.b. after the unit was heated up into Mode 3.
Action b. of TS LCO 3.7.1.2.b. requires that, with the Train D turbine-driven auxiliary feedwater (AFW) pump inoperable, the pump must be restored to operation within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or the reactor be placed in Hot Standby (Mode 3) within the next i
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
Unit 2 was taken into Mode 3 in order to conduct testing on the turbine-driven AFW pump following the failure of this pump to start on demand following a reactor trip on February 3, 1993. The details of this event will be documented in the Augmented Inspection Team (AIT) report (50-498/93-07; 50-l 499/93-07) that has yet to be issued by Region IV.
The pump's failure to start has resulted in STP conducting an extensive repair and testing program required to restore this pump to an operable status. This testing program has included testing previously completed in Mode 4, in addition to further testing in Mode 3.
STP's current projections indicate that the testing will not be completed within the current 72-hour allowed outage time specified in the action statement of TS LCO 3.7.1.2.b.
This allowed outage time ends at 10:48 p.m. on February 25, 1993.
Discussions between STP, Region IV staff, and members of the Office of Nuclear Reactor Regulation (NRR) were conducted during the afternoon of February 25,
'i 1993. During these calls, STP categorized the nature of the request for the temporary waiver of compliance and the circumstances surrounding the need for prompt action, compensatory measures to be taken during the pump testing activities, evaluations of the safety significance, and the justification for
//)/
9303080042 930226 L I PDR ADOCK 05000498 I
D P
PDR y
a Houston Lighting & Power Company i the duration of the request.
Prior to the discussions with NRC, STP's Plant Operations Review Committee (PORC) reviewed and approved the waiver request.
A temporary waiver of compliance to Action b. of TS LCO 3.7.1.2.b. was subsequently grar,ted at 2:20 p.m., en February 25, 1993, by Region IV, with the concurrence of NRR. This waiver allowed STP a 72-hour extension of l
Action b. of' TS LCO 3.7.1.2.b., commencing at 10:48 p.m. on February 25, 1993, and expiring at 10:48 p.m., february 28, 1993.
The waiver of compliance was verbally approved by Region IV based on the compensatory measures taken by the licensee's operations staff in the preparation, control, and supervision during the additional time that the turbine-driven AFW pump would be inoperable; the relatively short time that i
the pump would be inoperable; the safety significance of the evolution; the low probability that an accident could occur during the evolution; and the licensee's favorable PORC review.
If your understanding of this matter differs from that expressed above, or if you have any quections regarding this matter, please contact me.
Fincerely, r
r).a aad A. Bill Beach, Director Division of Reactor Projects CC:
Houston Lighting & Power Company ATTN: William J. Jump, Manager Nuclear Licensing P.O. Box 289 Wadsworth, Texas 77483 City of Austin
~!
Electric Utility Department ATTN:
J. C. Lanier/M. B. Lee P.O. Box 1088 l
City Public Service Board ATTN:
R. J. Costello/M. T. Hardt P.O. Box 1771 i
San Antonio, Texas 78296 i
l
\\
I
i Houston Lighting & Power Company i Newman & Holtzinger, P. C.
ATTN: Jack R. Newman, Esq.
1615 L Street, NW 3
Washington, D.C.
20036 I
Central Power and Light Company ATTN:
D. E. Ward /T. M. Puckett P.O. Box 2121 Corpus Christi, Texas 78403
Mr. Joseph M. Hendrie 50 Bellport Lane Be11 port, New York 11713
{
t Bureau of Radiation Control State of Texas 1101 West 49th Street Austin, Texas 78756 i
Judge, Matagorda County i
Matagorda County Courthouse I
1700 Seventh Street Bay City, Texas 77414 Licensing Representative Houston Lighting & Power Company Suite 610 Three Metro Center-Bethesda, Maryland 20814 j
i Houston Lighting &. Power Company j
ATTN: Rufus S. Scott, Associate
-l General Counsel P.O. Box 61867 Houston, Texas 77208 t
f i
~
'i
FEB 26583 Houston Lighting & Power Company bcc to DMB (IE51) bec distrib. by RIV:
J. L. Milhoan Resident Inspector DRP Section Chief (DRP/D)
Lisa Shea, RM/ALF, MS: MNBB 4503 MIS System DRSS-FIPS RIV File Project Engineer (DRP/D)
R. Bachmann, OGC, MS: 15-B-18 DRS Section Chief (DRP/TSS)
RIV:DRP [
C:DRP/Di$
NRR Y N D:DSP MASatorius:df TFStetka JWRoe Addhach L2/>493 f
2/2 /93 2/16/93 2 / 20 / 9 3
/
l FEB 261993 Houston Lighting & Power Company 1 f
f i
- 1iU,b2Ykh ffb f h$
bcc distrib. by RIV:
l J. L. Milhoan Resident Inspector l
DRP Section Chief (DHP/0)
Lisa Shea, RM/ALF, MS: MNBB 4503 MIS System DRSS-FIPS RIV file t
Project Engineer (DRP/D)
R. Bachmann, OGC, MS: 15-B-18 DRS Section Chief (DRP/TSS) i I
i i
t i
f f
I i
I i
t i
t C:DRP/DYd NRR Y N D:f)lRP RIV:DRP/D MASatorius:df TFStetka JWRoe Adhach 2/J /93 2/$/93 2 / 24 / 9 3 f
2/d/93 f
t I
t l
T