ML20003F690
| ML20003F690 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 04/15/1981 |
| From: | Baynard P FLORIDA POWER CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 3-041-15, 3-41-15, TAC-43749, NUDOCS 8104230412 | |
| Download: ML20003F690 (2) | |
Text
O s
N Florida P.ower
- a e, m-...-
Q,v
~,
OV re s
h'
~")
2.
April 15, 1981 File:
3-0-3-a-3 6-
- 3-c41-15 APR 2 21981 > '
u.s, Nucuu ucuron amuca br. John F. Stolz, Chief
% j \\1 Operating Reactors Branch #4
\\,
'y Division of Licensing U.S. Nuclear Regulatory Commission Washingten, D.C.
20555
Dear Mr. Stolz:
Subject:
CrystaI River Unit 3 Docket No. 50-302 Operating License No. DPR-72 Continued Operation with Incperable MSV-414
Dear Mr. Stolz:
Florida Power Corr ^ ration hereby requests an exception to the Crystal. River Unit 3 Technical Specifications te allow operation with one main steam isola-tion valve inoperable.
The request involves entrance into all applicable rrdes whene operation with one incperable containment isolatinn valve is allcwed.
Main steem isolation valve MSV-414 has been declared inoperable due to a damaged actuator.
Currently, the actuator has been remved and the valve is gagged. The unit remains in Mode 4 until your approval can be obtained to return to power operations (i.e., Mode 1) with MSV-414 deactivated.
Repair er replacement of the actuater could require in excess of fourteen (14) weeks.
MSV-414 is among the many valves required to be operable in Modes 1, 2, 3, and 4 per Technical Specification 3.6 3 1.
Centinued Mode 1 operation is allowed in accordance with Action Statement b provided the affected penetration is isolated by deactivating the autcmatic valve in the isolation position.
This specification has been rigidly interpreted to disallow ascending in trodes (i. e., Mode 4 to Mode 3, etc. ).
Ecwever, Technical Specification 3.7.1.5 does not require the main steam isolation alves to be cperable in Modes 4, 5, and 6 and does allow ascension in modes praer operation provided the inoperable valve is maintained closed.
Ther..
t, se request a temporary exception to Technical Specification 3.6.3.* ; ; - ke the Limiting Conditicn for Operation consistent with that of Tech :. o 9'- ificaticn 3 7.1.5 This exception would allow up to Mode 1 operatic, e
c main steam isolation valve maintained 810.4230 %
p
/g/
co da General Office 3m mnecutn saeet soutn. p o sc t4042. st Pete set.rg s r>ca 33733. e$3-eee sis gyooo,oe) c
(
e Mr. Jchn F. Stolz Page 2 April 15, 1981 closed until the next refueling outage at whict time, the inoperable valve could be restored to operable status.
In socordance with applicable Surveillance Requirements the remaining isolation valves will be verified as operable prior to ascending modes and a visual inspection of the operable actuators and snubbers will be performed to assess the potential for a cocmon mode failure.
The limitations of power operation with one main steam isolation valve maintained closed have been previously reviewed internally, oad reactor operation limited to 60% Full Power does not cause degradation of protective instnamentation fbnctions.
Under these circumstances, control system load limits are reset to cause balancing of feedwater flow and steam flow.
Pursuant to 10 CFR 170.12, we have determined this issue to involve a single safety issue and your review to be a Class III amendment.
Therefore, a check in the amount of $4,000 is hereby remitted.
This amendment fee will also apply to a future technical specification change which will address the generic issues of discrepancies between technical specifications and mode ascension under an action statement.
Very truly yours, apad JA+p
.Y.
aynard Manager fluclear Support Services PYB:mm
-