ML17298A951

Forwards Revised Responses for Questions 1,10 & 23 Provided in Util ,Per 840320 Telcon Request.Questions Pertain to fire-rated Walls,Fire Hose Stations & Fire Alarm/Detection Circuits

ML17298A951
Person / Time
Site:	Palo Verde
Issue date:	04/13/1984
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Knighton G Office of Nuclear Reactor Regulation
References
ANPP-29295-WFQ, NUDOCS 8404170243
Download: ML17298A951 (22)

Text

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REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR 840 FAGIL:STN "50 528 STN"50 529 STN 50 530 AUTH BYNAME VAN BRUNTrESE ~

RECIP.NAME KNIGHTONiG B 4170243 DOC ~ DATEs 84/04/13 NOTARIZED:

NO DOCKET Palo Verde Nuclear Stationi Unit 1P Arizona Publi 05000528 Palo Verde Nuclear Stations Unit 2i Arizona Publi 05000529 Palo Verde Nuclear Statiani Unit 3i Arizona Publi 05000530 AUTHUR Af FILIATION Arizona Public Service Co, RECIPIENT AFFILIATION Licensing Branch 3

SUBJECT:

Forwaids revised responses for Questions 1i10 8, 23.provided in util 830929 Itrgper 840320 telcon requests Questions pertain to fire rated wal lsifire hose stations 8 fire alarm/detection circuits ~

DISTRIBUTION CODE:

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0 TTTLEt Licensing Submittal:

PSAR/PSAR Amdts 8 Related Correspondence e

NOTES:Standardized plant ~

Standardized plant; Standardized

plants, 05000528 05000529 05000530 RECIPIENT IO CODE/NAME NRR/DL/AOL NRR LB3 LA INTERNAL; ELD/HDS3 IE/DEPER/EPB 36 IE/DQASIP/QAB21 NRR/DE/CEB 11 NRA/DE/EQB 13 NRR/DE/MEB 18 NRR/DE/SAB NRA/OHFS/HFEB40 NRR/DHFS/PSRB NRR/DSI/AEB 26 NRA/OS I/CPB 10 NRR/DSI/ICSB 16 NRR/OS I/PSB

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Arizona Public Service Company P.O. BOX 21666

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PMOENIX, ARIZONA 65036 April 13, 1984 ANPP-29295 WFQ/JYM Director of Nuclear Reactor Regulation Attention:

Mr. George Knighton, Chief Licensing Branch No.

3 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2 and 3

Docket Nos.

STN-50-528/529/530 File:

84-056-026; G.1.01.10

Reference:

(A) Letter from E.

E.

Van Brunt, Jr.,

APS, to G.

W. Knighton, NRC, ANPP-28331, dated December 1, 1983.

(B) Letter from E.

E.

Van Brunt, Jr.,

APS, to G.

W. Knighton, NRC, ANPP-27924, dated September 29, 1983.

(C) Letter from E.

E.

Van Brunt, Jr.,

APS, to G.

W. Knighton, NRC, ANPP-24091, dated June 15> 1983.

Dear Mr. Knighton:

Attached are revised responses for Questions

//1,

610, and 823 provided in Attachment 2.

This information is being provided in response to our March 20, 1983 conversation with Mr.

D.

Kubicki, of your staff.

Attachment 3 provides our addditional clarification to our Reference (B) response to Question 23.

Please contact me if you have any further questions.

Very truly yours, QP Um~E~

E. E.

Van Brunt, Jr.

APS Vice President, Nuclear ANPP Project Director EEVB/JYH/sp Attachment cc:

E.

A. Licitra D. Kubicki A.

C.

Gehr (v/a) 8404i70243 840413 PDR ADOCK 05000528 PDR

4

STATE OF ARIZONA

)

) ss.

COUNTY OF MARICOPA)

I, A. Carter

Rogers, represent that I am Nuclear Engineering Manager of Arizona Public Service

Company, that the foregoing document has been signed by me for Edwin E.

Van Brunt, Jr.,

Vice President,

Nuclear, on behalf of Arizona Public Service Company with full authority so to do, that I have read such document and know its contents, and that to the best of my knowledge and belief, the statements made therein are true.

4@6 A. Carter Roger Sworn'o before me this~+~day of iW My Commission Expires:

Ky Comalssion Expjroe April6, 19@

1984.

Notary Public

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Attachment:

, 2 VERIFICATION THAT INSTALLED FIRE PROTECTION PLANT FEATURES SATISFY

, PREVIOUS COMMITMENTS

+estion 1:

Verify that" in that type t

Response

I doors in'ire rated walls and partitions are listed for use of wall or partition.

All fire doors

are, or will be, labeled fire doors of the fire rating required for the wall rating, (i.e.,

3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> wall:

A label, 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> door; 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> wall:

B label, l-l/2 hour door; 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> wall:

C label, 3/4 hour door) with the exception of doors that have removable transoms and/or have both louver and glass view plates.

The exceptions have been certified by the manufacturer (a) to be of UL or FM construction (but without label) offering the corresponding fire rating protection.

These doors are listed in the accompanying table:

FIRE ZONE DOOR 8 WALL RATING DOOR RATING REMARKS 28 29 42D/42A 42D 42A/42D 42B/42C 52A/47A 48 54/52D 47B/52D 55 57A 57G HP Office 57A/57 MEN'S LKR 74 59/62 61A F105 F201 A102 A104 A110 A118 A201 A204 A213 A216 A302 A317 A320 A323 A327 A335 C111 R107 R121 2

HR 2

HR 2

HR 2

HR 2

HR 2

HR 2

HR 3 HR 2

HR 2

HR 1

HR 1

HR 1

HR 1

HR 1

HR 1

HR 1

HR 2 HR 2

HR B

B B

B B

B B

B B

B C

C C

C C

C B

B B

WG&L WG&L RT RT/WG&L RT RT RT RT RT RT WG&L WG&L WG&L WG&L WG&L WG&L RT WG&L WG&L where RT = removable transom WG&L wire glass and louver Notes:

(a)

Fenestra

letter, September 13,

1983, certifies that the series S6 doors (WG&L) supplied are made with construction, material and workmanship approved by UL for classification as l-l/2 hour (B label) or 3/4 hour (C label) labeled doors.

(See attachment 1).

I II II I

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VERIFICATION THAT INSTALLED FIRE PROTECTION PLANT FEATURES SATISFY PREVIOUS COMMITMENTS Page 2

(b)

Door PA204 is not labeled, but is a hollow metal door constructed to general fire door standards.

This door opening is in a concrete wall separating the Auxiliary

Building, Zone 48, from the Radwaste Building, Zone 61C.

The combustible loading in Zone 48 is 3 minutes, consisting of cable insulation, and Zone 61C is listed as "none" because there are essentially no combustibles in this zone.

There is a

monorail passing through the upper transom

door, and there is a

removable piece in the monorail to allow the double swinging transom door to close when the rail is not in use.

There is no redundant safe shutdown equipment in either

zone, and these areas are open and readily accessible for manual fire fighting.

Automatic sprinklers will also be adde'd above both sides of the door to prevent any possibility of fire passing from one zone to the other.

This modification will be completed prior to fuel load.

(c )

The center concrete dividing wall of the Main Steam Support Structure (MSSS) at levels 100 ft.

to the roof is being reclassified from non-rated to one

hour, with the following exceptions:

a) Fire door C-ill at the 100 ft. level is a double swinging hollow metal fire door certified by the manufacturer to be constructed to 1-1/2 hour fire door standards.

However, it has a

removable transom bar and is slightly oversized, therefore, not labeled.

b)

The roof is supported by columns 8-1/2 ft. above the south,

east, and center walls The opening is for pressure venting in the event of a

high energy line break.

The opening is located high enough to prevent equipment from being exposed to direct flames or radiant heat through the heavy concrete barrier wall separating the north and south halves of the building.

The north and south exterior walls of these rooms are vented to the atmosphere at the roof line, therefore, heat build~p and transfer by convection to the other half will be minimized.

The center wall is being upgraded to place the Atmospheric Dump Valves (ADV's) associated air supply lines and pneumatic actuators in separate fire areas.

The train A electrical circuits are already protected by one hour thermolag insulation.

There are four ADV's, two in each half of the building.

There is a train A (protected) and a

train B valve on each side of the central wall, and only one of the four valves is required for safe shutdown.

The two ADV's in the northern half of the room are separated from the two in the southern half by approximately 40 ft.

and the center one hour fire barrier wall.

Levels 100 ft., 120 ft. and 140 ft. are fully protected by an automatic preaction water suppression system throughout.

The above will assure that at least two of the ADV's will remain operable thus proving 100% redundancy under fire conditi'ons.

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Question 10:

To meet Section E.3 of BTP ASB 9.5-1, the applicant committed to equip hose stations with not more than 100 feet of fire hose.

The applicant should verify that the existing hose stations will be able to protect all of the following areas with not more than 100 feet of hose:

a.

b.

c ~

Zone 21/22 and 24 Zone 74 Zone 37

Response

The PVNGS commitment to BTP APCSB 9.5-1 stipulated that no more than 100 ft of l-l/2 inch hose would be used for interior hose stations.

That commitment has been addressed in the following manner:

a ~

Zones 21/22 and 24 Zones 23, 24, and 25 can be reached from hose station 890 (in the control building) which will be provided with a 150 foot length of hose.

(The hose routing is not tortuous, and the flow resistance change from 100 feet to 150 feet is minimal.

This exception to the PVNGS commitment to BTP APCSB 9.5-1 will be indicated in an upcoming FPER amendment).

Additionally, APS will install another hose station 8108 with 150 foot hose in the control building near the exit to the diesel building (see FPER Figure 2,

column lines J4/JD).

This hose will be able to reach Zones 21 and 22.

Lnstallation will be completed prior to fuel load.

The FPER will be revised to show the new hose station in the next amendment.

b.

Zone 74 Main Steam Support Structure (MSSS)

Zone 74 can be reached within all areas of the 100 foot (grade) level and 140 foot level from standpipe and hose stations at those levels located at the northwest corner of the turbine building.

These hose reels will be equipped with 150 feet of 1-1/2 inch hose from hose station t/63 (100 foot grade) and 100 feet of l-l/2 inch hose from hose station

//72 (140 foot grade).

The 120 foot level of the MSSS is entirely an open grating and hose steams can be directed at all areas of that level upward from the 100 foot level and downward from the 140 foot level (which is also an open grating).

The hose nozzles will reach within 30 feet of all areas of the building.

c ~

Zone 37 All areas of Auxiliary Building, Zone 37, can be reached within 30 feet by a 150 foot of 1-1/2 inch hose from hose station 825.

(Again, the hose station is not tortuous,,and the, change in flow resistance is minimal.

This zone has" only piping and,,normally contains no combustible material.

Thi's exception to PVNGS commitment to BTP APCSB 9.5-1 will be reflected in an upcoming FPER amendment).

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Question 23:

To comply with Section E.l of.. BTP ASB 9.5-1, the applicant should clarify which fire alarm/detection circdits are Class A and Class B.

Response

Plant Areas Protected b

Detection Onl All wiring from the detectors to the local fire panels is Class "A". All wiring from the local fire panels to the Security System is Class "B".

The Security System is Class "A".

Plant Areas Protected b, Water Sup ression CO The initiating device circuits for the C02 systems protecting ESF switchgear rooms and battery rooms are Class "B" from the detectors to the 'local fire panel and from the fire panel to the security system remote terminal concentrator.

However, there are two independent detection zones (circuits) serving each of these rooms.

They are cross-zoned for actuation of the C02 System.

If one zone experienced a

trouble condition, operations personnel would be dispatched to investigate.

The other zone would still be able to transmit a fire alarm signal to the control room.

If a fire condition

existed, the COZ system could be manually initiated to extinguish the fire from just outside the switchgear room.

Since the switchgear and battery rooms are located in the control

building, immediate response would be anticipated.

The redundant trains and separate rooms are surrounded by three hour fire barriers.

Portable extinguishers and manual hose stations equipped with Class "C" nozzles are also provided.

Therefoxe, the installed detection and suppression systems meet the BTP APCSB 9.5-1 Appendix "A" "Guidelines for Specific Plant Areas",

Item D.5 and D.7 switchgear and station battery rooms.

In addition the cable trays in the switchgear rooms are adequately protected as described

above, against a

potential fire which might develop.

In summary, failure of one detection zone will not prevent a fire alarm to the control room.

Failure of the Class "B" circuit from the local control panel to the remote terminal concentrator will not prevent automatic actuation of the C02 suppression system.

The following water local fire panel to Class "A" are the AC of a Wet Pipe

System, suppression systems are wired Class "A" from the the Securi,ty System.

The signals that are wired Power On, Water Flow, Alarm, and Trouble.

In case only the Water Flow switch is Class "A".

1. Fuel Bldg. Railroad Bay, El. 100',

Zone 2.

Upper Cable Spreading Room, El. 160'f

3. Lower Cable Spreading Room, El. 120'f 4.

D.G.

Rooms A 6 B, El. 100',

Zone 21 5.

D.G. Fuel Oil Day Tank Rooms, El. 131',

6. Aux. Bldg. Systems, El 100',

Zones

42C, 27 Control Bldg., Zone 20 Control Bldg., Zone 14 Zone 131

42D, 6 46

0 1

Question 23:

(Continued )

7. Electrical Penetration

Rooms, C and B, El. 100',

Zones 42A 6 42B

8. Electrical Penetration

Rooms, A and D, El. 120',

Zones 47A & 47B

9. Aux. Bldg. Systems, El. 120',

Zones 52A and 52D 10.

Dead Space Compartments A and B.

Areas between Control Bldg.

and Aux. Bldg. El. 100'nd 120'.

11.

Turbine Driven Aux.

Feed Pump, El. 80'f MSSS, Zone 72 12.

MSSS, Zone 74, El. 100', 120',

and 140'.

Fire Pum House The diesel fire pumps have Class "A" circuits for indication to the Control Room.

These are "Pump Running",

"Controller Switch Off" or "Manual Position" "Controller Trouble" is Class "B".

The Class "A"

circuits for the motor driven fire pump are "Motor Running" and "Loss of Power".

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Attachment 3

Clarification to ANPP-27924, dated September 29, 1983.

I t

In Question 23, we listed a number of water suppression systems in safety related areas which are actuated by Class A detection systems.

This might, be-interpreted that all of the water suppression systems in safety related'reas are Class A...An exception to this is the Containment

Spray, High Pressure Safety Injection (HPSI),

and Low Pressure Safety Injection (LPSI)

Pump Rooms which are actuated by Class B detection systems.

",The water'uppression systems in these rooms are not required to meet BTP 9.5-1 Appendix A

and 10CFR50 Appendix R

safe shutdown requirements, because train A and B

pumps are located in separate fire areas having 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> barriers.

The suppression systems were installed for added safety and insurance purposes.

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Ar'"ona 4t'uclear Power Projec.'echtel Job 10'07 Fenestra Job It:

49-5767 Proj ect II82-l'395 Fi':

A~!-070 De a r ~!r.

Bin~ha~:

This lette. certifies that the S5 Ser'es doors.

the fra-. es and the transo= "ane's, as supp ied by Fenestra Corpcration to the Palo Verde ?nuclear Cenerat n~

S ation (P'..:GS) un"er Spec'f 'caticn 13-PZ-070 for the. doors listed below nanufacturec in accorcance with the construct cn. naie" als anc wor"=..ansh p approved by Uncer r-'ters La'."orator'es (LL) or rac or:.'.utual (F".!} for a class'=ication as either lq ?our (B) or 3/'our (C) label.

Because of the special operational and access recuire-...ents, alon~ with the ventilation considerat.ons neeced

.'or th's project, these asse=.blies incluced

doors, re'ovea'e transc;.s, fra.-..es anc/or v sicn li~hts and louvers, all of wh.ch exceeced lis ec si=es.

The resu'tant desi~ns fai1 to quafy for the

~r.l and

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Fire Rating Label.

However, the co=ponent materials tranu.actured by the.enestra Corpora" ion, which are used in these door-assetsblies, do t:eet the LrL or FH con-struction requirements for the equivalent fire ratin~ as certi.ied above, provided that the installaticn is in accordance with the recu're.-..ents of YFPA 80, Standards For Fire Doors and Wincows, as app'cable to Hollo 'letal Doors, FratIes and Hard ware.

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ec door asse...b lies and 'co espo"

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A102 A104 A110 A11S A201 A204 A213 A l I 5 A302 A317 1-1/2 1-1/2 1-1/2 1-1 /2 1-1/2 1-1/2 1-1/"

1-1/2 3/4 3/'

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