Text

Responds to NRC 801021 & 810122 Requests for Addl Info Re Fire Protection Safety Evaluation Suppl.App R Mod Requirements Are Narrow in Scope & Do Not Assure That Increased Plant Safety Will Be Achieved
	ML20008E735
Person / Time
Site:	Point Beach
Issue date:	03/02/1981
From:	Fay C; WISCONSIN ELECTRIC POWER CO.
To:	Clark R, Harold Denton; Office of Nuclear Reactor Regulation
References
	TAC-43600, TAC-43601, NUDOCS 8103090546
	Download: ML20008E735 (30)
	v • d • e

..

O Wisconsin Electnc ecua courasr 23I W MICH! GAM. P.O. BOX 2046, MILWAUKEE. WI 53231 March 2, 1981 0 %

Mr. Harold R. Denton, Director 7g 4 Office of Nuclear Reactor Rerfulation v gr U. S. NUCLEAR REGULATORY COMMISSION 74

.u

Washington, D. C. 20555 W ,, [ " L1 Attention: Mr. R. L. Clark, Chief 5 ..

Operating Reactors Branch 3 '[

f 6$'

Sp

'M- C ,'

Gentlemen:

DOCKET NOS. 50-266 AND 50-301 FIRE PROTECTION SAFETY EVALUATION REPORT SUPPLEMENT POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 The following comments an . formation are provided in c

response to the Fire Protection 4 Evaluation Report (SER) supplement for Point Beach Nucle.. Plant, Units 1 and 2, which was transmitted with your letter dated October 21, 1980, and Enclosures 1, 2, and 3 which were transmitted with your letter dated January 22, 1981. These documents identify ten open items for which additional information has been requested (SER Section 3.1) and four unresolved items (SER Section 3.2).

The supplement states that modifications for some items should be made in accordance with particular sections of Appendix R to 10 CFR Part 50. We consider it inappropriate to require simple compliance with a particular rule statement without consideration of plant specific conditions or fire protective provisions. This requirement negates considerable design effort by the licensee and review effort by the NRC Staff without demonstrating that increased plant safety will be achieved.

Nevertheless, we re-evaluated the subject modifications in light of the requirements of Appendix R.

The following is our evaluation of each of the open and unresolved items. Available design information is enclosed for your review.

05 3.1.5 Water Damage Protection g Floor drains will be provided in the cable spreading room. The licensee's proposal to install floor drains in the cable spreading room was based upon our assumption that /[

8103 090 gq g 7

Mr. Harold R. Denton March 2, 1981 installation of a fixed water suppression system would provide acceptable fire protection for the room.

The cable spreading room sprinkler system design was submitted with our June 23, 1980 letter. Evaluations of Section 3.1.4, Fixed Water Suppression Systems, and Section 3.2.1, Safe Shutdown Capability, in the supplement do not mention water protection in the cable spreading room. ,

t The size of a floor drain system in the cable spreading room is dependent upon the need for, size, and type of fire suppression system to be provided. The suitability of a fire ,

suppression system plus other protective features of the cable spreading room to provide acceptable fire protection should be resolved before the floor drain design is finalized. With the !

expectation that floor drains will be required to accommodate manual fire fighting activities, and in order to expedite imple-mentation of fire protection modifications, we will continue our engineering effort for this item. Preliminary floor drain design information is contained in the enclosed Attachment A.

3.1.9 Fire Barriers Licensee will perform the modifications specified in the supplement. The modification actions listed in the supplement t are in accordance with the licensee's proposed action as listed in the SER. Penetration seal design information which was furnished with our October 13, 1980 letter has been accepted by your January 22 letter. Additional design information for Itea 3 of this modification is contained in the enclosed Attachment B.

3.1.14 Cable Separation SER Item 3.1.14 dealt only with " cable or co'nduit that interconnects redundant safety-related cable trays". However, in the supplement, this item has been expanded to be synonymous with Item 3.2.1, which deals more generally with safe shutdown capability. With respect to the original SER Item 3.1.14, the

! cable or conduit interconnects have been identified. Fire stops and conduit seals to remove the combustible pathway are being installed as part of the ongoing penetration seal modification.

Seal design information which was furnished with our October 13 letter has been accepted by your January 22 letter. Cables routed in common conduits or junction boxes will be relocated to

eliminate the interconnect.

3.1.15 Ventilation System Control Cables This item was not identified as an open item in either the SER or the supplement. However, the Staff stated in l

l l

, - _ , _ _ - ~ _ _ _ _ _

i , t 1

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[ Mr. Harold R. Denton March 2, 1981 Enclosure 2 to the January 22 letter that licensee should either l l show compliance with Section III.G of Appendix R or verify that I

! there is no effect on safe shutdown capability, j

$ t We have reviewed the location, routing, and operation ;

function of the subject. cables. Each air supply opening to the (

! diesel room ventilation fans is provided with a manually actuated ;

fire damper for the purpose of containing a potential diesel 7 1 generator room fire within the affected room. The subject cables ;

i begin at the fire damper closure switches and energize relays l which open normally closed contacts in each ventilating fan circuit to prevent fan operation when the dampers are closed. j A complete loss of cable function in a fire event would leave the ;

relay de-energized and ventilation fan operability unimpaired. l Therefore, the loss of these cables due to a fire would have no ,

effect on safe shutdown capability following the fire, and ;

protective action in accordance with Section III.G of Appendix R [

is not required. j 3.1.17 Hydrogen Hazard Fire Protection ,

i*

This item will be considered as part of Item 3.2.1 below.

t 3.1.24 Diesel Generator Air Intake Structure [

l Rather than provide an alternate intake structure as [

! originally proposed, licensee will permanently reverse the ;

i ventilation flow through the diesel rooms. Since the existing :

intake structures will then become the exhaust structures, the fire rated enclosures discussed in the supplement will not be

necessary. Design information for this modification is contained i in the enclosed Attachment C. l s 1 I Auxiliary Building Cable Tray Penetration Seals 3.1.26 3.1.27 Containment Building Fire Stops 3.1.28 Service Building Penetration Seals The seals and fire stops required in these items will

be installed. Seal design information was furnished with licensee's :

October 13 letter and accepted in Enclosure 1 of your January 22 ;

l letter. !

3.1.32 Fire Hydrant Inspections _

r The licensce submitted an administrative procedure for annual fire hydrant inspections based upon equipment history.

On this basis we continue to consider annual fire hydrant inspections to be adequate. In addition, the monthly fire protection equipment surveillance procedure has been expanded to

I P

_ _ _ __ ____. - __ _ . _ _ . . _ _ _ _ . _. . . _ _ - ~ _ , _ . - - _ . _ _. .-. , . _ ,

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t Mr. Harold R. Denton March ., 1981 ;

f 4 include fire hydrant inspections for accessibility and condition. !

We consider the degree of performed inspections to meet all NFPA !

requirements. The monthly surveillance procedure is contained !

in the enclosed Attachment D.

3.1.33 Control Room Light Fixtures t

This item seems to have been erroneously listed as a l requirement in Enclosure 3 to your January 22 letter. The ;

proposed modification was stated to be acceptable in the SER i

~

supplement. The modification has been completed. ;

t 3.2.1 Safe Shutdown Capability The licensee's December 29, 1978 letter referenced in .

the supplement provided an evaluation of the plant specific l capability to achieve and maintain shutdown for postulated fires l in various plant areas. This. evaluation was based on quantified i postulated fires and proposed modifications which were considered :

adequate to satisfy the conditions of Branch Technical Position ,

9.5-1. We have not been apprised of any specific deficiencies of fire protection features determined during your evaluation or y the technical basis for your conclusions in the supplement. j i

The supplement states that, to meet Section III.G of the proposed Appendix R to 10 CFR Part 50, the licensee should provide an alternate shutdown capability for the following areas of the plant:

1. Cable spreading room -

2. Switchgear room

3. Control room

4. Auxiliary feedwater pump area ,

5. Auxiliary building El. 8 ft., 26 ft., and 46 ft.

and above ;

6. Containment

7. Containment facades However, Section 50.48(b) of the rule in its effective form requires the licensee to reassess those areas of the facility to determine whether the requirements of Section III.G.2 of Appendix R are satisfied. If they are not, the licensee may either provide the alternative shutdown capability in accordance with Section III.G.3 or request an exemption. Licensee is currently undertaking this evaluation. -

3.2.2 Circulating Water Pumphouse Fire Protection The supplement statements indicate that some misunder-l standing exists regarding configuration of the circulating water '

pumphouse. The resolutions and blanket imposition of the l t 1

I I

Mr. Harold R. Denton March 2, 1981 j requirements of Section III.G of Appendix R to 10 CFR Part 50 i do not accurately address the pumphouse configuration or the [

specific concerns stated in the SER.

l i A more complete description of the circulating water pumphouse configuration is contained in the enclosed Attachment [

l E. We believe that this infor,ation satisfactorily addresses I

) the concerns stated in the SER.

i 3.2.4 Fire Brigade Training Frequency i Licensee's fire protection training program will be f modified to include annual practice sessions for each fire l brigade member. However, we feel strongly that overall fire protection will be more effective if the shift supervisor may be a member of the fire brigade.

(

i i

3.2.6 Reactor Coolant Pump Lube Oil Collection

, Existing and proposed coolant pump oil collection

] systems are undergoing evaluation to determine compliance with :

Section III.O of Appendix R. ;

1 j Very truly yours, [

f I,

C. W. Fay, Director ,

Nuclear Power Department i

Attachments l Copy to NRC Resident Inspector , I i

I i

I i i I

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?, ., ATTACHMENT A

. . CABLE SPREADING ROOM FLOOR DRAINS DATE February 17, 1981 ,

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. CABLE SPREADING ROOM FLOOR DRAINS DATE February 17, 1981 PAGE 2 i

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ATTACHMENT A CABLE SPREADING ROOM '

FLOOR DRAINS DATE February 17. 1981 '

PAGE 3 ;

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JOB GULLOTINE FIRE DAMPER DAF-P-2216 1 ~ onL MTE * *TWL *~* * **1 m .ce DAF-D-2216 E 1

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February 26,~1981 ~ ~ ~ ~ ' ]

Page 1 of 3 i I

ATTACHMENT C l t DIESEL GENERATOR ROOM !

! AIR SUPPLY j

. i i

Section 5.1.5 of the Safety Evaluation Report expressed concern that smoke t r

from a turbine lube oil reservoir fire could be drawn into the diesel l

generator combustion air intakes and prevent diesel generator startup.

i

! Item 3.1.24 of the Safety Evaluation Report is a licensee proposed modifi- ;

! cation consisting of a two-hour fire rated enclosure around the existing :

air intake structures with smoke dampers and ducting so that an outdoor !

i fresh air supply could be provided to the diesel generator rooms in the l l event of a lube oil fire. -

2 i A structure and associated ductwork was designed. It was found that an !

! adequate structure could not be located in a manner suitable for unimpeded [

plant operations and maintenance activities. The location of the proposed ;

outdoor air supply would be within 30 feet of the existing diesel generator !

room exhaust. This suggested investigation of permanently reversing venti-lation flow through the diesel generator rooms. Such a modification would !

always provide a fresh air supply to the diesel generators without instal- .

lation of space consuming ductwork. ;

Consultation with the diesel generator manufacturer verified that ventila- i tion air flow direction should not affect diesel operation. The diesel is !

designed to operate with room static pressure within + 3 in, of H O2 of _

a atmospheric pressure. Diesels are normally installed with the generator :

j facing the room air inlet. Because the Point Beach installation would be '

l opposite of normal, the adequacy of generator cooling required verification.

4 Consultation with the ventilation fan cunufacturer verified that reversed i flow could be accomplished with a potential for decreased air flow and fan ;

vibration. j Based on the above consultation, a field verification test was conducted.

. Gravity operated room inlet and discharge louvers were reversed. Ventila-tion fan blades and motor leads were reversed. The diesel generator was >

operated at rated continuous operating load and the following items were evaluated.

1. Room Static Pressure The diesel room static pressure was measured with just the diesel i

running and with both the diesel and ventilation fan running. No deviation from atmospheric oressure was detected. Room access doors were readily operated. All louvers operated satisfactorily. .

2. Generator Discharge Temperature '

Flow rates were measured and heat loads calculated for the test f condition. This data was used with the Su.mer ambient design temper-ature to calculate and worst case generator discharge temperature.

, _ . . _ ~ _ -

t i

Page 2 of 3 i i The worst case generator discharge temperature was found to be below i the design specification temocrature and generator cooling is veri-fied to be adequate. ;

3. Ventilation Fan Flow _ f:

Irdtial test measurements indicated a fan flow rate of about 70,100 cfm L

. which is higher than the initial design flow rate of 50,000 cfm. Some !

reduction in flow rate was desired because~approximately 10,000 cfm i combustion air would not flow through the fan. The pitch of the fan !

blades was adjusted and a flow rate of approximately 42,000 cfm was l l measured. This is considered to be an appropriate flow rate for re- F versed flow operation. -

4. Fan Vibration

i I

'l No significant fan vibration was noted. However, some vibration of I

! the fan discharge louvers was noted which appeared to be a result of f

pressure pulsations generated by the fan. The vibration was not of ;

sufficient amplitude to warrant corrective action. !

l 5. Personnel Hazard at Discharge Enclosure ,

! i i Air velocity measurements were taken at several locations around the !

discharge enclosure. The discharge louvers provide suitable deflec-l tion towards the floor. Waist height air velocity was very low at a !

distance of three feet from the enclosure. Installation of deflectors i is not considered necessary. ,

4

6. Potential Freezing .

Service water and fire protection piping should be protected from l freezing during diesel operation and while the diesel is idle. -

Continuous service water system flow exists during diesel operation. (

Service water temperature was monitored during the test with the ;

ventilation fan in continuous operation and no deviation was noted. l Fire protection piping is installed near the ceiling which will be 1 warmed by heat rising from the diesel. Ventilation fan operation is j

thermostatically controlled. The lowest fan actuation setting is 900F !

i and the lowest fan cutoff setting is 700F. Should ventilation fan !

operation be initiated, it will be terminated before room temperature I approaches freezing. There is no apparent potential for freezing j during diesel operation, j l During the Winter season, room air heaters maintain diesel room temper- t i ature at 650 F while the diesel is idle. Turbine hall roof exhausters !

I could induce air leakage through the gravity operated dampers of the 1 diesel room. If such leakage were to exceed room air heater capacity,

! room temperature could decrease to the point of freezing. Counter- ;

j weights on the gravity inlet louvers were adjusted to hold the louvers 2

closed with the diesel and ventilation fan idle prior to the field i verification test. An air flow rate approximately equal to the room air heater capacity was measured at the redundant ventilation fan during l

l l

l w

Page 3 of 3 the test. The room air heating fan was shut off following the test and flow through the ventilation fan was not of measurable quantity.

Therefore, air inleakage is negligible and no apparent freezing problem exists. Tr.e diesel room ambient conditions are being carefully watched during the current Winter season.

We have concluded, following our design efforts, that installation of an air inlet enclosure and ducting is not a practical method of enhancing fire protection safety at Point Beach ike. lear Plant. We hereby propose an alternate modification which consists of permanently reversing the ventila-tion flow through the diesel generator rooms. Tnis modification, which has been verification tested in accordance with the above description, will provide a fresh air supply to the diesel generators.

t We

ATTACHMENT D February 26, 1981 2 ,

DATE ~ ~ ~ ,75-14 DSS !!AJOR FPS -

Revision 0 11-20-80 POIfff BEAC!! NUCLE &It PLAllT TEC1'HICAL SPECIFICATI0!! SURVEIT LANCE TESTIllG

!!O!!TiiLY FIRE EQUIP::EIIT SURVEILLA!!CE OUTSIDF ,;l:EAS, MAI!JTEtJ?d:CE A!!D POI; TABLE WELDItlG CARTS

. CAUTIOli

, OPERADILITY 01: Tile DOUELE STARTTED ITEl:S OF Ti!IS PROCEDURE Al'E A TECl!!!! CAL SPECIFICATIO!! REQUILEl:EliT. IF Tl:ERE ARE AIT/ PROCLEMS TELT0H::ll:G T!!EEE STEl'S, !ICTIFY TiiE DUIY SHIFT SUPERVISOR I!':EDIATELT.

J 17 - 204 Cartridges fl'.eded CONDITIC!!S Hord:AL 9 - 5tt Cartridg..: ::eeded II:ITIALS

1. Fi!-22, south. rest hose station inventory

a. 6 lengthe of ?!;" hose

b. 3 lengths of l'," hce.e

c. 2 gate valves en hydrant sht.t

d. 1 2\" r.or:le

e. 2 Ib" no le:. _

f. I gated vye

g. 1 fire a::e _

h. I wrecking bcr

i. 4 cpanner wrcnches

j. I hydrant wrcr ch

k. lionen 15-301 and 15-302

1. Foan pinypipe uit h pickup tube .

m. liydrant barrel appears dry

n. liyarant accescibic

2. Ansul 9-26-123 (200), fuel oil pu~phouse WT* Accescible Location Scaled Damaged or Defective Tag Updated .

3. Ansu'. 9-26-124 (208), sewage treatraent area

WTA _

Accessible Location Scaled Damaged cr Defective Tag Updated -

Weight reciuired in June and December.

~ - . _ - __. - - _.

I

TS-14 Page 2 CONDITIONS NORMAL INITIALS

4. Extension !!uilding

a. Ansul 9-26-121 (20#), extensions building garage WT* Accessible Location ,

Scaled Damaged or Defective Tag Updated

b. Pressurized water 9-26-216 (2b gal.), lower hallway west Pressur e - Sat. Accessible l Location Sealed Damaged or Defectiv2 [

Tag Updated

c. CO2 9-26-222 (5#), lower hallway cabinet

WT* Accessible Location Sealed Damaged or Defective Tag Updated CO 9-26-200 (55), CAS d.

2 WT* Accessible Location Scaled Damged or Defcctive Tag Updatcd

e. Pressurized water 9-26-217 (2\ gal.), lower hallway cast Pressure - Sat. Accessible Location Scaled Damaged or Defective Tag Updated J

f. Pressurized water 9-36-219 (24 gal.), upper hallway east Pressure - Sat. Accessible .

Location Scaled Damaged or Defective Tag Updated ,

g. CO2 9-36-221 (5#), upper hallway cabinet WT* Accessible Location Scaled Damaged or Defective Tag Updated- -

h. Pressurized water 9-36-220 (2h gal.), conference room 4 Pressure - Sat. Accer.sible Location

{ Scaled _ Daiaaged or Defective Tag Upd7ted

Weight required in June and Deceraber.

. .c l

TS-14 i Page 3 L f

L CONDITIONS

~

NOR!!AL [

INITIALS

{

1. CO 9-36-218 (108), electrical /hcating and. ventilating WT* Accessible Location Scaled Dar. aged or Defective' ,

Tag Updated j

j. CO 9-36-212 (5#), computer Room 2

UT* Accessible _ Location f Scaled Damaged or Defective -

Tag Updated >-

5. FH-21, south fire hydrant (near parking lot)

a. I hydrant wrench !

b. Hydrant' barrel appears dry i

c. Hydrant accessible

6. Gatehouse !

I

- a. CO 2 9-26-210 (5#)

l UT* Accessible Location t

! Sealed Dataaged or Defective [

Tag Updated 3

b. Pressurized water 9-26-214 (2\ gal.) ,

Pressure - Sat. Accessible- ,

Location Sealed Dalaaged or Defective ,.

i Tag Updated ,

7. SAS .

L

a. CO 2 9-26-215 (5#), SAS l P

WT* Accessible Location

Scaled Damaged or Defective i Tag Updated I f

E f

Weight required in June and December. .

t i

E i

9 ,

+ . - - - y ,, .- - , - - - - - ,m - . , - - , . . . - ~ , . - - . - - -

d TS-14 Page 4 1

" CONDITIONS MonMAL :

INITIALS

8. F11-27, southeast hose station inventory

a. 6 lengths of 24" hose

b. 3 lengths of Ih" hose

c. 2 gate valves on hydrant shut

d. 1 2b noa:lc 214 noz::les e.

f. 1 gated wye ,

g. I fire are s h. 1 urecking bar

i. 4 spanner vrenches

j. I hydrent wrench

k. !!ydrant barrel appears dry

1. Hydrant accessible

9. Circulating..ater pu;phouse a.**HR-30 FP-35 shut Hose in place __

Cover installed Mozzle shut Condition 1

b. Ansul, 9-26-120 (205) i t

WT* Accessible Location l

Scaled Dalanged or Defective t Tag Updated ,

c. Ansul, 9-26-119 (200) [

. t r

WT* Accessible Location Damaged or Defective [

Scaled ;

Tag Updated .

d.**HR-29 t W

FP-34 Hose in place Cover Condition installed Nozzle shut FH-26. northeast hose station inventory j 10.

t

a. 6 lengths of 2h" hose ;

b. 3 lengths of 14" hose ;

c. 2 gate valves on hydrant shut ,

r j

l

Weight required in June and December. ,

l - ,

, , . . . - - _ , _ _ . . . - . . . . , , , _ , - , , - , , - . _ - , . . . -l

. . r. * - .

e, TS-34 Page 5 4

' CONDITIONS NORMAL INITIALS

10. (Cont'd)

d. I 2h" nozzle

e. 2 14" nozzles

f. I gated wye

g. I fire axe

h. I wrecking bar ,

i. 4 spanner wrenches

j. I hydrant urench

k. Ilydrant barrel appears dry 9

l. llydrant accessible

11. Fil-25, north fir e hydrant (near 2X01)

a. I hydrant wrench

. b. liydrant barrel appears dry I c. liydrent accessible

12. Warehouse #2 1

I

a. Ansul, 9-26-136 (20#)

WT* Accessible Location Sealed Damaged or Defective Tag Updated

b. Ansul, 9-26-135 (204)

WTA Accessible Location Scaled Damged or. Defective Tag Updated

c. Ansul, 9-26-131 (20#) ,

UT* Accessible Location Sealed Damged or Defective -

Tag Updated 4

d. Ansul,.AU Spare 1 (350# Cart) -

Nitrogan Pressure Accessible Location Sealed Damged or Defective Tag Updated ,

c. Dry pipe valve Air Side Pressure Water Side Pressure

}

Check Compress.or Oil Level Chcck Water Prime on Valve 1-

Weight required in June and December.

y wq, --

p -e e.-&-.~---+7--;amy- 9 -,---,ym7.---,. y ,w.y ..g-p9-=er. ,-- w- - -

w . _ + - . .--.r-%-y, ,- y--*my y1 5---t-r 3 e

r s .

's

. TS-14 Page 6 CONDITIONS NORliAL

~

INITIALS

13. Fit-24, northwest hose station inventory

a. 6 ler.gtt' of 2h" hose

b. 3 lengt B of Ib" hose

c. 2 gate valves on hydrant shut

d. 1 25" nozcle 2 1\" nozr.le c.

f. I gated wye

g. 1 fire axe

h. I vrecking bar

i. 4 spar.ner wrenches

j. I hydrant wrench

h. liydrant barrcl appears dry

1. 11ydrant acces sible

14. SG CO system and Ansuls 2

a. llanual iscaltion on cardox tank Open and sealed Seal in place on start suitch

b. Quick throu valve at east daor open Itose station condition ,

NOTE: DO fl0T RENOVE ll0ZE OR NO22LE.

c. Tank level %, (min. C5)

d. Ansul 9-26-129 (20E) ,

WT* Accessible Location Scaled Damaged or Defective Tag Updated _

e. Ansul 9-26-128 (20#)

WT* Accessible Location Scaled Damaged or Defective Tag Updated

f. Ansul 9-26-127 (Fixed 150#) ,

Nitrogen pressure Gas quick throw valve scaled open __ Relea.se mechanism cover scaled closed Damaged or Defective Tag Updated

Weight required in June and December

O

. e

.TS-14 Page 7 CONDITIONS HORMAL INITIALS

15. FH-23, west fire hydrant (near SG)

a. I hydrant wrench

b. Hydrant barrel appears dry

c. Hydrant accessible

16. Warehouse #1 dry pipe valve and . sprinkler system Compressor pressure Water pressure Air side pressure Check compressor oil level Check water prime on valve

17. Ansul 9-26-126 (20!!), Warhouse #1 WT* Accessible Location Sealed Damaged or Defective Tag Updated

18. Ansul 9-26-125 (208), garage WT* Accessible Location Sealed Damaged or Defective Tag Updated

19. Ansul 9-2C-133 (200), gas pump WT* Accessible Location Sealed Damaged or Defective Tag Updated _,

20. Switchyard control house

a. Ansul 9-26-133 (208)

WT* Accessible Location Sealed Damaged or Defective - .

Tag Updated .

b. Ansul 9-26-132 (150# Cart)

Nitrogen pressure Accessible Location .

Scaled Damged or Defective Tag Upwated

c. CO 2 9-26-131 (1004 Cart)

WT* Accessible _ Location Scaled Damaged or Defective Tag Updated

Weight required in June and December.

MMW

,TS-14 o Page 8 CONDITIO!!S MOR11AL

- INITIALS

d. Ansul 9-26-130 (204)

WT* Accessible Location Scaled Damaged or Defective Tag Updated 0FFICE ARCA

21. Pressurized water, 6-26-104 (2h gal.)

Pr est.ure - Sat. Accescible Location Scaled Damaged or Defective Tag Updated

22. C0 , 6-26-103 (2\#)

2 WT* Accessible Location Scaled Damged or Defective ,, Tag Updated

23. !!C-2, Cabinet FP-61 Shut liose in place

, llozzle Shut Condition OTl!Cf1

24. Ansul 9-26-144 (54), Pickup 2811J WT* Accessible Location Secled Damaged or Defective Tag Updated

25. Ansul 9-26-145 (5#), Truck 3004A WTA Accessible Location Scaled Damaged or Defective Tag Updated

26. Ansul 9-26-146 (54), Truck 1004B WT* Accessible Location Sealed -

Damaged or Defective Tag Updated

27. Ansul 9-26-147 (5#), Truck 1003B WTA Accessible Location Sealed Damaged or Defective Tag Updated

Weight required in June and December.

, . t k

, TS-14 Page 9 CONDITIONS NORMAL

, - INITIALS

28. Ancul, 9-26-194 (5#) Truck 1833D WT* Accessible Location Scaled !

Damaged or Defective Tag Updated

. I i

29. Ancul 9-26-163 (58), Galion, Cherry Picker

, UT* Accessible Locotion Sealed

! Damaged or Defective Tag Updated l

30. Ansul 9-26-164 (5#), Tractor i i

UI* Accessibic Location Sealed I Data.ged or Defective Tag Updated [

31. Annul 9-26-195 (208), site Boundary Control Center !

I

] UT* Acceccible Locaticn Scaled

, Dant.ged or Dcrective Tag Updated ,

32. An'sul 9-26-196 (5#), Guard Vehicle 251d3 WTA Accessible Location Sealed '

j Dam 09;d or Dcfective Tag Updated

~

33. Ansul 9-26-197 (5#), Gasoline Fork Lift WTI' Accessible Location Sealed .

Damaged or Defective Tag Updated ,

34. Annul 9-26-162 (200), Guard Trailer '

a i

+

UTA Accessible Location Sealed Damaged or Defective Tag Updated t i

r

Weight required in June and December. .

t t

E r

s ,

I

. . e * - pr*

_ ..,-._m - , , . _ . _ , . , , _ , _ . . , . _ , . . - , ..mv...,,,.r,,, , _ ..m.4.- .~.y _

4,_m_,,,wi-

o

,TS-14 Page 10

35. Conduct surveillance on the following Maintenance welding carts.

14 - 208 Cartridges needed.

Ansul units installed on carts.

Tag Conditions Ext. # Nano . WT.* Location Se aled Updated 7 f f,,1g 10-M-148 Welding Rig #1 10-M-149 Wolding Rig G2 10-M-150 Welding Rig #3 10-M-151 Welding Rig #4 10-M-152 Nelding Rig #5 10-M-153 Wclding Rig f 6

~10-M-154 Wolding Rig #7 10-M-155 Welding Rig ES 10-n-156 Wclding Rig #9 10-M-157 Oxyacctylono Rig A 10-M-158 Oxyacetylene Rig B 10-M-159 Oxyacetylene nig C 10-M-160 Oxyacetylene Rig D 10-M-182 Oxyacetylenc Rig C ,

s

Weight required in June and December O

S f

~

. February 26, 1981 Page 1 of 2 ATTACHMENT E 4

CIRCULATING WATER PUMPHOUSE_

FIRE PROTECTION We are concerned that the evaluation statements contained in the October 21, 1980 supplement to the Fire Protection Safety Evaluation Report do not indicate sufficient understanding of the Circulating Water Pumphouse i configuration. The total pumphouse arrangement is shown on Figure 1. t Figure 2 is an expanded view of one-half of the safety related pump area. 1 It should be noted that the diesel fire pump day tank is located 1 within a curbed area in a corner of the non-safety related portion of the pumphouse. Oil piping to and from the diesel engine is embedded in the floor. Each circulating water pump is surrounded by a section of floor grating. Pump lubricating oil or spilled transient flammable liquids would i drain through the grating to elevation -11'-9". Each circulating water pump is in a separate compartment at this lower elevation. ' The safety related pump area is completely separated at the -11'-9" elevation by 2 foot thick concrete walls and is partially bounded on two sides by 12 inch thick concrete missile barriers at the operating floor level. Non-safety related motor control centers are set on 7 inch high concrete pads. Safety related pump cables are embedded in the concrete floor.

The concern expressed in the Safety Evaluation Report was that a fire at the diesel driven fire pump could damage the service water pumps.

The supplement states that installation of curbs, deflectors and a floor drain in this area is acceptable. Therefore, the concern expressed in the Safety Evaluation Report appears to be resolved. The metal security wall arocnd the safety related pump area was installed for security purposes, provides no fire protection benefit other than restricting access to the area, will not be removed, and does not qualify as a basis for rejecting the proposed fire protection modifications.

The barrier and equipment location recommendations listed in the supplement do not relate accurately to the configuration of the circulating L water pumphouse shown on Figure 1. , l The licensee's fire protection efforts have resulted in improve-

, ment of the originally proposed circulating water pumphouse fire protection ;

i modifications: i

1. The number of fire dete. tors will be increased 6 1;o 15.

2. The wet pipe automatic sprinkler system will cover the entire safety related area inside the security wall.

3. The curbs, deflectors and floor drain around the diesel engine ,

will remove spilled oil from the safety related area and not merely contain it.

4. Curbing will be installed around the perimeter of the security wall and c threshold installed in the doorway to prevent spilled i flammable liquids from entering the safety related area.

?

i

Page 2 of 2 l J

5. Steel plate will be installed over the floor grating in the

1. safety related area to prevent flame from a potential fire in a circulating water pump pit from entering the safety 4

related area.

The proposed modifications include barrier modifications designed ,

. to protect the entire safety related pump area from flammable liquid spills !'

instead of each service water pump. This provides greater distance separa-j tion from potential fires without impairing access to the service water l pumps than would be provided by many individual barriers. The numerous !

'- openings in the circulating water pumphouse floor will prevent the accumu- ;

lation of a large quantity of flammable liquid. Therefore, the potential ;

i for a long duration fire does not exist and the specification for rated !

fire barriers is of reduced practical significance. We consider the pro-posed modifications to be suitable to the requirements of Appendix R Section III G.

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