ML17348B422
| ML17348B422 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 02/19/1992 |
| From: | Plunkett T Florida Power & Light Co |
| To: | Ebneter S NRC Office of Inspection & Enforcement (IE Region II) |
| Shared Package | |
| ML17348B423 | List: |
| References | |
| RTR-NUREG-1413 L-92-048, L-92-48, NUDOCS 9203180090 | |
| Download: ML17348B422 (3) | |
Text
ENCLOSURE P 0 Box 029100 Mrarnr FL, 331{@ 9111 L"92-048 Stewart D. Ebneter Regional Administrator, Region II V. S. Nuclear Regulatory Commission 101 Marietta St.,
N.W., Suite 2900
- Atlanta, GA 30323 FEB 19 l982, Mr. Stewart D. Ebneter:.
Re:
Turkey Point Unit 3 Docket No. 50-250
,Operation During Interlock T
rt iver Repair of the Emergency.
Escape Hatch This letter documents Florida Power and Light's request of Region II for a
72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> temporary waiver of compliance with Technical Specification 3.6.1.3, "Containment Air Locks," Action statement b,i "With the containment air lock inoperable,
.except as the result of an inoperable air lock door, maintain at least one airlock door closed; restore the inoperable air lock to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
Since the inner air lock door has been satisfactorily vacuum tested and administrative control of the door positions will be
" maintained by a dedicated
- operator, no significant safety hazards or environmental impacts',exist.
On February 18, 1992 during the performance of 3-0SP-051.6 "Containment Air Lock Doors Operability Test" on the Unit, 3 emergency escape
- hatch, personnel performing the test were able to break the seal on the inner door during an attempt to force. open the inner door with the outside door closed and the interlocks set to open the outer door.
The door could not be freely opened but an apparent leak path'could be created.
When the interlocks operate as designed the inner door can not be opened with the interlocks set for the outer door to open.
The interlocks were not considered functional and therefore the containment emergency air lock was considered inoperable due to a cause other than an inoperable air lock door.
Unit 3 then entered the above action statement at 1312 hours0.0152 days <br />0.364 hours <br />0.00217 weeks <br />4.99216e-4 months <br /> and repair of the interlocks began.
Current repair efforts of the interlocks have been partially successful.
Complete repair or replacement of the interlock system is expected to be completed within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
A representative of the Chicago Bridge and Iron
~ Corporation, manufacturer of emergency hatch systems, has been asked to come to 9203180090 920220 PDR ADOCK 05000250
~ P PDR an FP{, Group company
Encl o sure the site to aid in the repair -of the can: interlock system.
Currently both the inner and outer doors a
e closed except during the repair effort.
A vacuum test of the inner door was performed to verify the integrity of the inner door seal.
P The surveillance requirements of 4.6.1.3.c.
state:
"At least once per 6 months by verifying that only one door in each air lock can be opened at a time."
Since the interlock between the inner and outer doors failed and is considered inoperable, therefore Technical Specification 3.6.1.3 is not met.
Draft NUREG
- 1431, WOG Merits Program Phase III, Standardized Technical Specifications for Westinghouse Plants provides an Action statement which allows for the locking of doors and 31 days for repair with an air lock door interlock mechanism inoperable in one
'r more air locks as long as an operable door is closed.
The WOG Merits also permits entry and exit into containment under the control of a dedicated operator.
Until the air lock is repaired, a dedicated individual will be stationed at the emergency air lock to ensure that only one door is opened at a time and that the door does not remain open any longer than is required.
This request has been reviewed by the Plant Nuclear Safety Committee and approved by the Plant General Manger.
This administrative control of the position of the doors is in place.
If you have any questions concerning this issue please contact us.
Very truly yours,
~ping..D~
T. F. Plunkett Vice President Turkey Point Nuclear TFP/JEK/jek CC:
Document Control Desk, USNRC Raj Auluck, Project
- USNRC, Turkey Point Plant
l