ML19340E454
| ML19340E454 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 12/29/1980 |
| From: | Widner W GEORGIA POWER CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8101140551 | |
| Download: ML19340E454 (5) | |
Text
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Gecrg a Power Cemcany 230 Peacnt ce Street Ws c"ce Scw 4545 R a-ta Gecre a 30302
'eec ene 404 522 6060 m
GeorgiaPower W. A. Widner c ear Ger ra on December 29, 1980 r* * *"*ec#
U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washingtca, DC 20555 NRC DOCKETS 50-366 OPERATING LICENSE NPF-5 EDWIN I. HATCH NUCLEAR PLANT UNIT 2 FIRE PROTECTION MODIFICATIONS Gentlemen:
Operating License NPF-5 was issued to Georgia Power Company con-taining several conditions, including item C.3.(b.)--Fire Protection.
Condition C.3.(b) requires that Georgia Power Company maintain in effect and fully implement all provisions contained in the " Evaluation of the Hatch Nuclear Plant Fire Protection Program", as amended through Amend-ment 7.
A portion of the fire protection evaluation report addressed a proposed sprinkler system for the Unit 2 recirculation pumps in the drywell. The existing schedule for installation of the sprinkler system calls for completion of the modification by the end of the initial refueling outage. Plant Hatch Unit 2 is currently in the midst of the initial refueling outage and is scheduled for startup in February,1981.
The recently issued Appendix R to 10CFR50 supercedes the approved fire protection plan in the area of reactor coolant pump (recirculation pump) protection. As mandated by Appendix R, no credit will be given for installation of the proposed sprinkler system. The only acceptable alternatives appear to be an oil drainage system or an inerted contain-ment.
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8103140
Georgia Power d U. S. Nuclear Regulatory Comission December 29, 1980 Page 2 Therefore, in view of the stated requirements of Appendix R and the anticipated large expenditure of both manpower and material resources, Georgia Power Company requests to be relieved of the comitment to install a sprinkler system for the Unit 2 recirculation pumps. The attached proposed revision to the Fire Protection Evaluation report would reflect the changed status of the commitment and is submitted for your approval. Due to the short period of time remaining before comple-tion of the refueling outage, we request your earliest review and appro-val of this proposed change to a condition affecting the Operating License.
Very truly yours, h b At __f
,,,, /W. A. Widner RDB:mkb Attachment xc:
M. Manry R. F. Rogers, III l
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2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 EDWIN I. HATCH NUCl. EAR PLANT UNIT 2 PROPOSED AMENDMENT TO FIRE PROTECTION EVALUATION The proposed amendment to the Fire Protection Evaluation would be incor-porated as follows:
i Remove Page Insert Page 34 34 Table 3, page 3 of 4 Table 3, page 3 of 4 t
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Drywell As shown on figures 13 and 23 the structural components of the drywell have a noncombustible rating. The combustible loading inside the area is 27,723 BTU /ft2 for cable insulation and 2,214' BTU /f t2 for oil, and is insufficient s
to permit the spread of a postulated fire into or out of the room.
The combustible loading is considered to be low. A fire in the drywell could be indicated by the drywell temperature detectors, although this is not the l
purpose of these detectors, q
1 No smoke removal system is provided.
Due to the nature of the area, no irmediate access is provided for manual fire fighting.
Due to the limited nature of the available combustibles in the drywell it is not expected that a fire would prevent safe shutdown of the plant.
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The following modifications are proposed for fire detection and protection in the Unit I drywell:
1.
Kaowool will be used on cable trays (as appropriate).
2.
Curbing will be built under the recirculation pumps to contain any oil that might leak out.
3.
Fire detectors will be placed under the recirculation pumps and i
will annunciate in the main control room.
The Division I and Division II containment cable penetration area are located
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180 apart in the drywell. The possibility of a fire spreading from one penetration area to the other would be extremely unlikely, especially considering the fact that the cable trays will be covered with Kaowool. In any event, should a cable fire occur in one of these areas the fire detectors added would detect and alarm the fire condition so that the plant could be brought to a safe shutdown condition before the fire ' could spread to. the other penetration area.
Since Unit 1 is presently operating with a N2 inerted containment, the addition of these provisions is not needed. When approval for operation of Unit 1 without i
inerting is obtained from the NRC, similar modification will be made on Unit 1.
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25.
Mark floors to prohibit transient combustibles in Ar ril, 19 78 the intake structure (pg 20) 25A. Provision of separation between HPCI and RHR rooms (pg 21)
May 1, 19 78 i
26.
Provide smoke detection in the CRD areas (pg.25)
Refueling 27.
Add Knowool to cable trays in the drywell (pg 34)
Ap ril, 19 78 28.
Curbing for recire pump in the drywell (pg 34)
Re fueling 29.
j 33.
Fire detectors for recire punp (pg 34)
Re fueling 39A. Lock or Alarn Fire doors (pg 43a)
April 19 78 31.
Qualification of fire dampers (pg 50a)
June, 19 78 31A. Replace 3 hr. barriers (pg 50a)
July, 19 78 32.
Provision of smoke handling equipment (pg 53)
Janua ry, 1979 32A. Training of fire team in revised procedures (pg 56)
Septembe r 15, 1973 323. Training of fire Brigade in revised procedures (pg 56)
January 1,1979 j
33.
The circuits of unsupervised flow switches and ala rms to be tested monthly '(pg 58a)
Ap ril, 19 78 4
34.
Unsupervised valve alarm circuitry will be tested monthly and valve positions checked (pg 58a)
Ap ril, 19 78 d
35.
Provide separate monitoring for the electric fire -
pump (pg 59d)
July, 19 78 i
- 36. Barriers will be provided between fire pumps and j
the sprinkler system raised :(pg 54d)
Octobe r, 19 78 37.
Above ground valves controling water to fixed water extinguishing system will be locked or have position alarms in the control roon (pg 61)
April, 19 78 38.
Additional smoke detection for northwest and southwest cable arma (pg.Q25-3) ~
Re fueling 39.
Mobile platform for northwest and southwest cable l
areas (pg Q25-3)-
Re fueling l
40 Protect - cable trays in the northwest and southwest cable areas with Kaowool (pg Q25-3)
' Refueling f
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