ML19282B805
| ML19282B805 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 03/14/1979 |
| From: | Reed C COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7903160208 | |
| Download: ML19282B805 (5) | |
Text
~
. Commonwealth Edison m -
,One First National Plaza. Chicago, lihnoi_s Address Reply to: Post Office Box 767
- Chicago, Illinois 60690 March 14, 1979 Mr.7 Harold R. Denton, Director Office of Nuclear Reactor Rogulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Zion Station Unita 1.and 2 Proposed Change to Facility Operating License Nos. DPR-39 and DPR-40 NRC Docket Hon. 50-295 and 50-304 Reference (a):
March 10, 1978 latter from A. Schwencer.
to Cordell Reed containing Amendment Mos. 36 and 33 to Facility Operating Licenses Nos. DPR-39 and DPR-48
Dear Mr. Donton:
Pursuant'to 10 CFR 50.59, Commonwealth Edison Company hereby. requests a change to Operating License Nos.
DPR-39'and DPR-48. :Per, Reference (a), the modifications of section 3.1.of the Zion Stntion Fire Protection Safety Evaluation' Report were:to be completed prior to return to operation of Zion Unit-2,for Cycle 4. operation.
The purpose of. this amendmenti is ; to ' extend the cernpletion date for the modifications until.the return to operation of Zion Unit 1 for Cycle 5 operation which is estimated to be about December 1, 1979.
The current.(March ~ 1,1979) and projected (ond of Unit 2 outage in April 1979) ~ status of the twenty (20) modifications and recommendations delineated in Section 3.1 of Reference. (a) are outlined below:
A.
Current' Status (March 1, 1979)
' Of the twenty (20) items,- six (6) are complete.
These are:
1.
Smoke Detection System Tests (3.1.1);
(Note, however, that no suitable preoperational test is currently available.)
7903160&O3
~
f NRC Docket Nos.:50-295/304 Mr. Harold R. Denton
--2 March 14, 1979 2
Hose Houses (3.1.7)r 3.' ~ Air Breathing Apparatus _ (3.1.9) :
4.
Portable Ventilation Ectuipment (3.1.10);
5..
Portable Extinguisher (3.1.12) and 6.
Untreated Lumber (3.1.20).
In addition to these items, two other items, Fire Dampers (3.1.13) and Structural Protectionf (3.1.15) are over 50% complete.
B.
Projected Status (End of Unit 2 outage) of the remaining fourteen (14) items, six (6) will be complete at the end of the Unit 2 outage in April._ These are:
1.
Fire Water System-(3.1.5);
2.
Interior Hose Stations (3.1.6);
2 Fire Ladders (3.1.8);
4.
Floor Drains (3.1.11)3 5.
Structural Protection (3.1.15) and 6.
Access to cables (3.1.17).
In addition to these items, the following four (4)
' items will be nearly completa.
1.
Fire Detection Systems (3.1.2)-
Of the sixteen areas in this modification,
' thirteen will be completed.
2.
-Water suppression Systems.(3.1.4)
Four of the five. areas / modifications will be completed..Only.the automatic fire suppression systems in the areas of.the auxiliary feed pumps.and component cooling water pumps will not be fully complete.
i q
.h
NRC Docket Nos. 50-295/304 Mr. Harold R. Denton: March 14, 1979 3.
Fire Dampers (3.1.13)
Five o2' the ten aread are complete and the remaining five areas will be 75% completa at the_end of the outage.
4 Reactor Coolant ? ump (3.1.18)
This item will be completed for Ur,it 2.
Three of the four pumps on Unit 1 are complere and the drain piping redds to be installed on Unit 1.
In sunnary, effectively 70% OE fourteen of the twenty modifications and recommendations of Section 3.1 of Reference (a) will be completed prior to tho' return to operation cf Zion Unit 2 for cycle 4 in April 1979.
The remaining areas will not be completed primarily. due to the scope of the work involved and the long delivery times of specialized equipment from vendors.
More specifically, in many areas, e.g. cabla spreading room, the work scope, i.e. the' actual podification implementation, was greatly underestimated as numerous design and equipment modifications have-been'necessary.
In addition, since similar fire protection modifications have been mandated for all operating plants, a substantial manufacturer's backlog of the required specialized equipment has been created resulting in numerous extensions of equipment delivery dates.
For example, three of the remaining incomplete modifications _fcr Zion Station (3.1.14 - Fire Doors, 3.1.16 - Ventilation Ducts and 3.1.19 - combustibla Storace Areas) are in a. hold status awaiting the manufacture and delivery of
~
fire doors.
However, with the exception of Item L 1.18 -
Reactor Coolant Pump, Ccanonwealth Edison currently anticipates contpletion of all the remaining items of Section 3.11of Reference (a) by August 1, 1979.
At that time, commonwealth Edison will provide the NRC Staff with an updated report confirming completion of these items.
Item 3.1.18 which involves the reactor coolant pump oil collection systen will be completed on Zion Unit 1 during the Fall'1979 refueling outage.
Three of the four Unit 1 pumps have drip pans installed.
The remaining pump and the drainage collection sysrem will also~be installed during the Fall 1979 outage.
The fourth pump's drip pan was not installed during the Fall 1978 refueling outage for the following reason.
Zion Unit 1 Reactor Coolant Pump 1A motor was replaced by a Salem m(tor in 1
NRC Docket Moc. 50-295/304
!!r. Harold R. Denton: March 14, 1979 June 1975.
However, the drip pan design was based on measurements taken during the Unit 2 Spring 1970 refueling catege and did not includo differences due to a.different pump mov $1ch was diocovered during the Fall 1970 outage.
- Honeo, a r e sign was nococcary.
Commonwealth Edison alm 6 raquests a change to Items 3.1.13 and 3.1.16 of section 3.1 of noference (a).
These changes will not reduce the degron of fire protection but will facilitate the overall complation of these fire protection modifications.
The changos are na follows.
1.
Under Item 3.1.13, Fire Dmrsors, add "(11) Three-hour rated firo dampor9 in certain ductworks in the cable spreading room (Sce Item 3.1.16),"
2 Under Item 3.1.16, ventilation Ducts, replace the first paragraph with:
" Safety related bentilation ducts routed through the outer cable spreading area will be coated to increase their fire resistanco rating (5.2).
Non-safety related ducts routed through tha cable opreading room will either be coated to increase their fire resistanco rating or be protected by three-hour rated fire dampera at locaticna whero the riuct
.penetratos a firo barrior such acra wall or coiling 5" The abovo considorations and pro ised license amendment enango have toen reviewad and ap, roved by cousnonwealth Edison On-Site and Off-Site Review with the conclusion that there are no unreviewed safety questions.
Currently, Zion Unit 2 in in a refueling outage and in expected to return to service for Cycle 4 operation on or about April 12, 1979.
Thereforo, Cocmonwealth Edison requests that the NRC' Staff expeditiously review and approve the amendment change requested heroin prior to the aforementioned scheduled
- return to operation of Zion Unit 2 for Cyclo 4 oporation.
e
URC Docket nos. 50-295/304 Mr. Harold R. Denton: March 14, 1979 Parsuant to 10 CFa 170, Conanonwealth Edison has
' determined that this proposed amendmont is a cocibined clnsa II and Class I Amendment.
As such, Coc:.nonwealth Edison has enclosed a foe remittanco in the amount of $1,600.00 for this proposed amondment. 'The proposed amandment chango involves the extension of a modification completion dato and, therefore, is administrativo in nature.
Please addresa any additional questions that you might havo to this offico.
Three (3) signed originals and thirty-soven (37) copies of this letter are provided for your uso, very truly yours,
(
Cordell Reed Assistant Vico-President enclosures SUBSCRIBED and SWORN to beforo me this / M, day of INAAfA
, 1979.
/Laus]Il.OLc&vb Not'ary Public V