ML20005B104
| ML20005B104 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 06/30/1981 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.3, TASK-2.E.4.1, TASK-2.F.1, TASK-2.K.3.22, TASK-TM NO-81-1122, NUDOCS 8107060313 | |
| Download: ML20005B104 (3) | |
Text
._
.~.
-.~
.w-.--
GP&L Carolina Power & Light Company June 30, 1981 File: NG-3514(B)
Sc. rial No.: NO-81-ll22 4
Mr. Darrell G. Eisenhut, Director Division of. Licensing
. United States Nuclear Regulatory Commission Washington, D. C.
20555 BRUNSWICK. STEAM ELECTRIC PLANT UNIT hs3. 1 AND 2
-DOCKET NOS. 50-325 AND 50-324 LICENSE NOS. DPR-71 AND DPR-62
' POST'TMI~ REQUIREMENTS' CONTAINED IN NUREG-0737
Dear Mr. Eisenhut:
1 Summary J
In its letter of December 15, 1980, Carolina Power 6 Light Company-(CP&L) committed to completing certcin post TMI modifications at
'the' Brunswick Plant by January 1, 1982 or by the completion of the next refueling outage, then scheduled for late 1981 (Unit 2) and early 1982
-(Unit 1).
Due to changes in the refueling outage schedules caused by revised fuel burn projections and in some cases, equipment delivery problems, the completion of these items will now be delayed until the j
completion of the refueling outages now re-scheduled for the spt'ry of 1982. Details and justification of these delays are presented below.
Discussion The following items in NUREG-0737 will be completed prior to startup from the 1982 refueling outages:
Item
' Title II.B.3 Post Accident Sampling II.E.4.1 Dedicated Hydrogen Penetrations II.F.1-1 Accident Monitoring, Noble Gas Effluents II.F.1-2 Accident Monitoring, Iodine and Particulate Effluents j
II.F.1-3 Accident Monitoring, Contair. ment High Range Monitors 4
II.F.1-6 Accident Monitoring, Containment Hydrogen II.K.3.22 Automatic Transfer of RCIC Suction 8107060313 81 fDRADOCK050 fo$
I 411 Fayetteville Street
- P. O. Box 1651 e Raleigh, N. C. 27602 hl $
~
i i
i-A discussion of each item follows:
'II.B.3 - Post Accident ~ Sampling - These modifications were originally scheduled to.be completed in outages planned for the. fall of 1981..These outages have now been delayed.
The first outages of sufficient length to allow completion of this item will be the refueli.ng outages scheduled for 1982.
CP&L's letter of
' December 31, 1979 described the interim measures initiated at Brunswick to provide post accident sampling capability prior to ampletion of this modification. CP&L believes that these mecoures will continue to be adequate during the additional period of time brought on by this delay.
'II.E.4.l~
' Dedicated Hydrogen' Penetrations - Because of the outage time required to make these modifications, CP&L is scheduled to install these changes during refueling outages consistent with the present equipment delivery projections. The next
. refueling outages are scheduled for 1982.
CP&L believes that
.this deferral is justified do; to Brunswick having already installed an operable hydrogen control systen (CAD System)
P that has previously been reviewed and approved by the NRC as part of the licensing base for the plant.
The proposed modifications are merely providing an upgrade to the present
' approved system.
II.F.'l Accident Monitoring, Noble: Gas ~ Effluents - Due to equip-ment delivery problems, the completion of the installation of these monitors must be delayed until the 1982 refueling outages. CP&L's letter of December 31, 1979 described the temporary monitors and measures which have been implemented at j
Brunswick pending completion of this item.
These temporary t
-monitors and interim measures will provide adequate capability until the permanent monitors are installed.
II.F.1 Accident Monitoring, Iodine and' Particulate' Effluents -
As with II.F.1-1 above, equipment delivery problems are also l
delaying implementation of this item until the 1982 refueling l
outages. As in the case above, interim measures taken at Brunswick in this area are described in CP&L's letter of December-31, 1979.
i II.F.1-3'
' Accident Monitoring,iHigh Range' Monitors - CP&L has en-countered vendor equipment problems, which precluded the I
completion of this item in Unit 1 during the last outage.
l Additionally, in order to complete this item in both units, access to the drywell is required which in turn requires that l
the plant be in cold shutdown.
The next outages which will permit this access are the 1982 refuelings. Therefore, this item will be completed prior to startup from the 1982 refueling
- outages, f
_-. -. _ -..., _. _,. - _ -, -. _, _.. -.. _ _ _.. _. _ _. _ _ _ _ _ _. ~., -. _,. _. ~. -
i II.F.1-6'- Accident Monitoring ~-~ Containment Hydrogen - Brunswick currently has two post accident hydrogen / oxygen analyzers installed on each unit as part of the containment atmosphere monitoring subsystem. Replacement of these monitors is being pursued ~as a reliability improvement. Since installation of the new monitors will require an outage, CP&L has elected to install the new monitors during the first scheduled outage of sufficient duration. This will be the 1982 refueling outages.
II.'K.3.22 - Automatic Transfer of'RCIC'Suetion - Modifying RCIC to provide for auto-switchover of pump suction from the' condensate tank to the suppression pool will require RCIC to be removed from service. CP&L is scheduled to perform this work during an outage. The next scheduled outages which will facilitate this item are the 1982 refuelings.
Since the switchover is currently addressed in plant emergency procedures and can be performed from the Control Room, CP&L does not feel that the modification warrants the. reduction in safety margin associated with doing the modification while operating with RCIC out of service (LCO).
Conclusion Due to schedule changes and for some items equipment delivery problems, several post TMI modifications will now be completed prior to startup from the 1982 refueling outages..The-1982 refuelings (Cycle 4 on Unit 1, Cycle 5 on Unit 2) are presently scheduled for the spring of
.1982.
Accomplishing these items during the refueling outages for the indicated fuel cycle will allow for the crderly and efficient improvement
~
of the plant. Interim measures implemented at Brunswick and present capabilities combined with the shortness of the extension of the schedule represent sufficient mitigation such that these delays represent no increased risk to the public health and safety. Theref9re, CP&L intends to proceed as outlined above.
If you have any questions on this item, please centact our staff.
Yours very truly, ff.A f E. E. Utley /
Executive Vice President Power Supply and Engineering & Construction JJS/je (1902) cc:
Mr. J. P. O'Reilly (NRC-RII)
Mr. J. Van Vliet (NRC)
, _ _ _ _ _ _ _, _ _