ML18031B256

Forwards Response to 870113 Request for Addl Info Re TVA Request for Tech Spec Change.Change Would Delete Phrase in Accordance W/Mfg Instruction, from Requirement for Annual Sensitivity Checks for Smoke Detectors

ML18031B256
Person / Time
Site:	Browns Ferry
Issue date:	03/19/1987
From:	Gridley R TENNESSEE VALLEY AUTHORITY
To:	Ebneter S NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
NUDOCS 8703300088
Download: ML18031B256 (23)

Text

REGULATORY ORMATION DISTRIBUTION SYS 1, (RIDS)

ACCESSION NBR: 8703300088 DOC. DATE: 87/03/1ZP'OTARIZED:

NO DOCKET I FACIL:50-259 Browns Ferry Nuclear Pouer Station>

Unit 1>

Tennessee 05000259 50-260 Browns Ferry Nuclear Power S+ation>

Unit 2.

Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station>

Unit 3>

Tennessee 05000296 AUTH. NANE AUTHOR AFFILIATION GRIDLEY> R.

Tennessee Ual leg Authority RECIP. Nhl'1E RECIPIENT AFFILIATION EBNETER> B.

Document Control Branch (Document Control Desi )

SUBJECT:

Forwards response to 870113 request for addi info re TUA request For Tech Spec change. Change would delete phrase

" in accordance w/manuFacturer instruction> " from requiremen+ for annual sensitivity checks for smoke detectors.

DISTRIBUTION CODE:

AOOAD COPIEE RECEIVED: LTR i

ENCL J SIZE:J5 TITLE: OR/Licensing Submittal: Fire Protection NOTES: N11SB/FCAF 1 c g.

NNSS/FCAF/Pl'1 1 c g.

OI A 1 c g.

cg ea.

to: S. Richardson> J. Zwolinski> B. D. Liaw Nl'1SB/FCAF 1 cg.

NNSS/FCAF/Pl"1 1 c g.

OIA 1 c g.

cg ea.

to: S. Richardson> J. Zwolinski> B. D. Liaw NNSS/FCAF 1 c g.

NNSB/FCAF/PN 1 c g.

OIA 1 c g.

cg ea.

to: S. Richardson> J. Zwolinski> B. D. Liaw 05000259 05000260 050002'Pb REC IP IENT ID CODE/NAl'1E BWR PD2 LA GROTENHUIS> N INTERNAL: ACRB IE WHITNEY>L NRR

> J 01 EXTERNAL: LPDR NSIC NOTES:

COPIEB LTTR ENCL 0

1 3

3 1

1 0

1 1

1 1

1 RECIPIENT ID CODE/NAKE BMR PD2 PD BMR PSB ADN/LFNB NRR STANG> J OGC/HDB2 NRC PDR COPIES LTTR ENCL 5

5 1

1 1

0 2

2 1

0 TOTAL NUNBER OF COP IEB REQUIRED:

LTTR 27 ENCL 23

r

TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 37401 5N 157 Lookout Place MAR I 9 1987 U.S. Nuclear Regulatory Commission Attn:

Document Control Desk Office of Nuclear Reactor Regulation Washington, D.C.

20555 Attention:

Mr. Stewart Ebneter In the Matter of the Application of

)

Tennessee Valley Authority

)

Docket Nos.

50-259 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) REQUEST FOR ADDITIONAL INFORMATION SMOKE DETECTOR SENSITIVITY TESTING We have prepared the enclosed response to M. Grotenhuis's letter dated January 13, 1987, requesting additional information regarding TVA's request for a technical specification change (BFN TS 215).

This change would delete the phrase "in accordance with manufacturer's instruction" from the requirement for annual sensitivity checks for smoke detectors.

Very truly yours, TENNESSEE VALLEY AUTHORITY R. Gridley, D'ector Nuclear Safet and Licensing Enclosure 8703300088 870319 PDR ADQCK 05000259 PDR An Equal Opportunity Employer

1 eF" tC

U.S. Nuclear Regulatory Commission cc (Enclosure):

Mr. G.

E. Gears Browns Ferry Project Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue

Bethesda, Maryland 20814 Mr. G.

G. Zech, Director TVA Projects U.S. Nuclear Regulatory Commission 101 Marietta St.,

NW, Suite 2900 Atlanta, Georgia 30323 Browns Ferry Resident Inspector Browns Ferry Nuclear Plant P.O.

Box 311

Athens, Alabama 35611

Vl I

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INN Il N f'l O'N NI

ENCLOSURE BROWNS FERRY NUCLEAR PLANT

RESPONSE

TO REQUEST FOR ADDITIONAL INFORMATION LETTER FROM M. GROTENHUIS DATED JANUARY 13, 1987 Are all smoke detectors currently in service at BFN listed by Underwriters Laboratories or approved by Factory Mutual'f not, please list those detectors by make, model and fire area.

Also, list all detectors (make, model and fire area) which can no longer be tested in accordance with the manufacturer's instructions.

RESPONSE

All smoke detectors used at BFN are either U.L. listed or FM approved or both:

Walter Kidde Model CPD-1201 Walter Kidde Model CPD-1212 Walter Kidde Model FT-200 Pyrotronics Duct Type Model CDA-2 U.L. listed and FM approved U.L. listed and FM approved U.L. listed and FM approved U.L. listed All detectors are tested in accordance with the manufacturer's instructions, except that no manufacturer's instructions are provided to test the sensitivity of the Model FT-200 detectors.

Provide justification for keeping detector(s) listed above operable or a time table for replacing these detectors.

RESPONSE

All smoke detectors in service are operating in an acceptable manner.

The detectors are periodically tested to standards which meet and/or exceed criteria specified by the respective manufacturers.

In regards to the Walter Kidde Model FT-200, the manufacturer has not specified any acceptance criteria for'the sensitivity of the detector, nor have they specified a procedure for testing the sensitivity.

TVA has effectively met the recommendations of the manufacturer by developing a procedure which has been approved by the manufacturer.

RE VEST NO.

3 Please provide a description of the procedures and test equipment which will be used,'ncluding the manufacturer's manuals and specification

data, to periodically test all smoke detectors for which TVA no longer has manufacturer's instructions and/or test equipment.

RESPONSE

The Walter Kidde smoke detector Model FT-200, for which we have no manufacturer s specific sensitivity testing instructions, is tested by Surveillance Instructions SI 4.11.C.1 and SI 4.11.C.5.

A copy of a letter from the manufacturer confirming our testing procedure is attached along with the associated vendor manuals and the applicable part of the Surveillance Instruction concerning the FT-200 smoke detector.

RE VEST NO.

4 Please provide the qualifications of the engineer or consultant who designed or approved the procedures and test equipment referred to in "3"

above, including provisions for quality control.

Also, discuss the bases for TVA's judgment that the testing will be adequately planned and conducted.

RESPONSE

The procedure for testing the sensitivity of the FT-200 was designed by an electrical engineer working for TVA in conjunction with an engineer with Fenwall/Walter Kidde.

TVA has received in writing the approval of our testing methods from Fenwall/Walter Kidde.

No special test equipment is involved.

As with all Surveillance Instructions, this test procedure is governed by the Quality Assurance Program which provides for quality control.

Adequacy of Surveillance Instructions is determined through multidisciplinary review by the. Plant Operations Review Committee.

RE UEST NO.

5 It is our position that "checks of smoke detector sensitivity be made in accordance with the manufacturer's instructions".

The underlined phrase should not be deleted from the Technical Specifications without a more detailed justification.

RESPONSE

It is our position that BFN has always met the intent.of "in accordance with the manufacturer's instructions" and will continue to do so.

However, item 5A of Office of Inspection 5 Enforcement Inspection Report 50-259, 50-260, 50-296/85-28 cites TVA for not meeting the technical specification requirement in that no manufacturer instructions are available to test the sensitivity of the FT-200.

TVA believes that the information given above is sufficient justification to approve the amendment request.

The Technical. Specification should be modified to include reference to any unique or model specific procedure(s) developed for the detector(s) referred to in "3" above.

RESPONSE

The technical specification surveillance requirements for instrumentation do not normally specify unique or model specific detail.

Such details are usually under the control of the licensee and are subject to review and audit by TVA organizations and NRC inspectors.

The general requirement to perform a sensitivity test reflects the proper level of detail consistent with similar surveillance requirements and provides adequate assurance that the devices will perform their function when required.

j

H&BVAL Division of Kidde, Inc.

KlolRE 400 Main Street, Ashland, Massachusetts 01721 Tel: (617) 881-2000 Telex: 94-8421 TWX: 710-380-1072

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( ) q)06 June 19, 1985 Tennessee Valley Authority Browns Ferry Nuclear Plant Box 2000

Decatur, AL

35602, Attention:

Mr. Darrell Murphy Electrical Maintenance

Dear Mr. Murphy:

Very truly yours, FENWAL INCORPORATED

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Robert C. Savery Marketing Manager Commercial Fire Detection Protection Systems Division This will confirm that, the testing method presently being implemented on your Fenwal Fire Alert FT 200 'Smoke Detectors is an acceptable and recommended procedure.

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""INSTRUCTION,'INSTALLATION6c OPERATION INFORMATION;

" 'IONIZATION'.SMOKEDETECTOR FT200/3S.

" CONTRACT 71C36-54742 A

GENERAL-Bulletin 912 and:925 have been furnished which give descriptive data, speci 1

features, and specifications on the FT200.

The information contained herein is for use for the above contract.

The FT200/3S is a smoke detector with a self contained power supply.

The unit has three basic parts..

1.

6" x 6" x 4" steel junction box with terminal strip and relay.-

2.Mo nt ing base that is attached to top of the junction box.

3.

Detector head.

INSTALLATION-'he junction box is provided with 3/4" and 1" knock outs.

The junction box can be mounted on the conduit without damage to the detector head, since the parts are easily separated.

The mounting base and junction box top are screwed in place after wiring is attached to the terminal strip in the junction box.

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For futher detail" see Cob~-act Drhwings 1 of 2 and 2 o~ 2.

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TVA JUN 16 19 Q~ ~Q Q Ft.~g CONaaCT HO:-lie.BC. - 8 TlTLL'HECK[0:

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.ook up willbe made as follows:

110 VAC willbo connectod to terminal 1 and 2, wires from annunciator to acknowledge power failure willbe connected to terminals 3 and d.

Wires from annunciator to acknowledge alarm condition willbo connected to terminal 5 and G.

OPERATION - Tho detector willactuate when smoke pas es through the chamber.

Tho output in alarm condition is a relay contact closure. 'he output upon loss of power i" a relay contact closure.

- SENSITIVITY-Factory calibrated to respord to a nominal value of 0. 006 G'CF.

Alarm response time is approximately 5 seconds.

(GCF values are determined by the use of Ambient Particle Detectors - models APD-l, APD-2, APD-3 manufactured by Fire Alert Co.)

r MAINTENANCE -. The minimal'maintenance require2 on the FT-200 detector consists:

~ an. annual cleaning of du'st fiom the collector'plaate/rad'ium chamber area.

~aution:

Cleaning programs sshou1d'he"geared "to 'the indiv dual detector environment.

In areas where an oily firm or other coating may develop, the radium source and the inside surface of the collector plate must be periodically cleaned with a cotton swab saturated with chemically pure alcohol.

Areas having an abnormally high lint or dust atmosphere willalso require more frequent cleaning.

When in doubt, clean.

Cotton wahs or other material used to clean the radium source and collector plate should e discriminately destr<ryed after use.

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t.', a/I,'l Thn FT.700 is nn innirntion typn, products of combustion drtector that is listrdby Undor.

'!, >>5 L'.Lnt>>tory loci ~ Unrlrrwritcrs Lohorntory of Cnnnda, and Frrctory IVlutunL Thn FT-200 uttlirt!s the

~.J>>r. l'ire Alert drsiqn of "chnt,sltrr snmpling" in order to provide maximum sensitivity cnd functional t,","rnhi!ilies not pnssihlr. with other drtectors.

maximum rrliability is provided by the Sect that three y,t,;>l.,s nu>st

>!n missed I>>:lorr. nn alarm rnn bn initintrd, All solirl state low voltng3 circ:!itry, wi;h s"lf.

rnn:;>>or rt nlnrn> nntl sul!rrvisnry rrlnys, provi(lrs compntnbility with most alarm system controls and

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BJPGPG'/IEIIC wlPIICVNm It'/:.lit')'i%'I'/:5'I':

Detectors can he installed for remote testing hy adding any normally open contact device (switch, relay, elc.) to the terminals provided. Upon momentary closure of tha remote contact tho detector will electronically yluplicatc the effect of products of comtwstion by decreasing tna time between chamber samples:

less time ct less ionization current = alarm condition.

~ yF' II;I.I.'I/5'/'ll'tl(r'otal"in.s, s.emrs testing is made available by use of the FTM-200 field test meter.

The field test meter plugs in series with the detector and op"rates from the exis?in".:Is',e;.s power. Pro-vttJrrs means for testing detector sensitivity, alarm and supervisory relay operation, 'n-iyc=" system volta<~

nmpliutde nntJ rrctification,incorporates remote test and reset switches.

For a"'di(lanai FTiti-2v0 info.--

rnatxin refer tn Fire Alert Bulletin No. 923.('J~")

<Y)/t'l)I'I'I<)r't)/NI)I<'i1'IY)/<: Operating conditions are indicated at the detector by a lie'at cmittingdiodo.

, Intensity is st!ch that nn distraction is experienced yet readily facilitates visual checl<ing of r'etcctor opcfatlone Normal Condition = S:able flash rate approxin;ately once per se".ond.

, Trouble Condition = No fiashing. indicates loss of supply power or o~n circuit.

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Unstable Condition = Erratic flash rate. Indicates an increase in ambient particles of combustion or unstable detector sensitivity.

Alarm Condition = Constant light.

<).~% rtfOI)I:/.'etectors are rquipped with insect screen/velocity shieids and are factory pre-set so that any rJctnctnr ran hn npplied to either normal or high air velocity cond',talons.

Relay cont..tcrrang~

ments are such that any F T 200 can br. wired in 12-different conYigurations.

~'8 t~~.~~rJ~~s,i rr...~ ~~) ~ 1 APPROYEO ZPaC//a8'eudaea C.a This cpyroeal does not tatters tno Contractor Irern any oert sl nia reetronal.

trtltty !or tha correctnese ot destcn, da

~all~ and dtmensrons, TEXNESSEE YAILEY AUTHORITY A%'h"t'I'/'IJ'/7')':

Factory calibraterl to respond to a nominal value of O.~Mo G"'s-. ~lcrrci re,"<'3gs'-~~~

is approximately 5 seconds.

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'I'I.lll'I;I(A'IYII(l'hrrmisfor controlled for stability from 0 degrees to 150 dmrees fahrenheit.

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Oprrrntin!J Vnltngr. " 20A to 26.4 VDC: full wave rectifirxl: 3.2 watts.

Current Drain = 47 MA. normal; 90 PfiA. alarm condition; 132 VtA. alarm condition/remote Inmp.

Contact Rating = 3.0 nmp at 30 VDC;"1,0 nmp at 120 VA~; resistive load.

C'>rnutttli!tq - Rvnihtlth! with eithrr pncitivr. nr nrrntivr! !tnt!!ntinil to thr. hnusing.

e 0.!r0 ti) 0./!t t>>>>at t tx!r>>ti t!l rrttl>>nt! 22(i. RLC nxt!I'lpt ull:tll!!'tisnull t!>>rosnl Create ter cr tn: orys See Fire Alert Bulletin Mo 875 for summary of radio<"~r'

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<II'V I 1 I I II II< ~ I I INI> I ~ II I I i>>ra>>s of;ili"<>biliralcorfl" cable aiirl self lock l)lug ari;i>>gniii<!Iit.Tile flnlnclor ic tl>r>> secure ~

nection, twist-to.lock design allows installation of the mounting plates and all system wiring prior to the completion of general construction without risk of detector damage.

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<SO<<EFCE RIIIBEO A<IEA >0 U Zp'HWD'Li<.Q Ail ionization typr., pro<liirts of cn>>il)i)Stion fle-actors are tested for listing by Underwriters Laboratories on 30 ft. centers, smooth ceilings 15 ft. high, and minimum air movement. The re-sultant 900 sq. ft. spacing, therefore, may be used as a reasonable g><irie for coml)arab)e appli-calioiis. Hownvf.r, whnrr. co>><litio<>s "not antic-ipatrll'liy thr. U.L. test f.'xict tc<!ili<)<l ol>str<<c-lio>>s, hi<ill;Iir nxr.l>>;>>I)l! raine, <.tc.} n r<.<li<<:r.fl sqii;<rr. foot;<y! covrc 1<jl! I'l)<<ct l)li < olici<lrri!<I i>

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>>/IIII'IIM.I:IIAMIIIII ordf.r to achieve adeq<<atn protection. Computer rooms and other s<<ch installations may require a sp;)ring of 200 sq. ft. or lrss, chir. to their ex-trnme high air exchanre ratns

( anil the resultant INSECT SCPI'<.'N VfI.C'.LI IV!illlf.lI'I Q>>

P I III.LEr,IllAI'>. A I E particle dilution factor); plus the liirhdollar value r ol the proprrty br:ing protcctnrl. lt is advised that li:I<llrln <let<.'I:<io<l '<!'<l<<il>>>>r.:il (s>><:I) lls Fir<'. Alert Co.

/ii>>il>>l~<il p<I< ill'I<')l!>I.<'ll>>c} ll>>ll oil t>>elf ill'sl fill!c l)I!

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}ration. Dy connecting I} normJ}lly opon switch front "BT" torrltlnrl (iso.

12) to ncrntlvo bott(try vi 2 or 0) dot(}ctors can. b() romot(} tastod from'cny Point y I} moment"ry azIitch closuro.

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Connootions shnwn ns nrrnws (~'n-I inrllo tns wlrlnl ox;omni nl tho tintootn; nnrt in<<st ho f)fOVi(ted hy thft install(}r. All other connoctions nn(f contncts shown Gr(t inte(rt}I to th(} (htactor.

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'r'TORS INDIVIDUALLYCARTONED 'LlITH COPY OF INSTRUCTION D~T)A SeREET NO. O'll

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P'~@~ Q P(IRICd tn USA 8-I-I('

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT Dao ent BF S1-4.]l.C.1 b.5 Unit 2

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~i Surveillance Instruction 4.11.C.l and 4.11,.C.5 Fire Protection Testing of Smoke and Heat Detectors Unit 2

Deecci>>tinn This surveillance instruction is used to comply with the requirements of technical specifications 4.11.C.l and 4.11.C.5.

The following table lists the requirements regarding these functions:

SI 4.11.C.1

~F>>e uenc Once/6 months Surveillance Re uirement All smoke and heat detectors located.-

in the following areas will be functionally tested for operability and results documented:

reactor building, diesel generator buildings, control bay, intake pumping station, cable tunnel to the intake pumping station, and the fixed spray system for cable trays along the south wall of the turbine building, EL 586.

4.11.C.5 Once/year All smoke detectors located in the areas listed above will be functionally tested for sensitivity and resUlts documented.

The data sheet of this SI cover both SI-4.11.C.1 and 4.11.C.5, since once per year the two SI's are peiformed simultaneously.

Only the last column on the.

data sheets for smoke detectors applies to SI-4.11.C.5.

The rest of the data is for SI-4.11.C.1.

When SI.4.11.C.1 only is being performed the last data column on the smoke detector data sheets is not applicable.

1.0 Obtain the shift engineer's written approval before performing the tests in this procedure.

(Reference data cover sheet) 2.0 Reouirements 2.1 Smoke source (Preferably HSA 458480 Smo'ke Tube) 2.2 DC Voltmeter (20,000 ohms per volt or more)

t Page 2

BF S I -4. 11. C.

1 6

. 5 Unit 2

2.3 Heat source (heat gun) 2.4 Stopwatch (needed only for SI-4.11.C.5)

HLV

OOOO, 2.5 Pyrotronics model SCU-8 sensitivity test set (needed only SI-4.11.C.5) 2.6 Data sheets SI-4,11.C.1 8

.5 2.7 Gamewell "Sens-meter" Model 29972 (needed only for SI-4.11.C.5 to check sensitivity of Sensmoke Model 29969 Smoke Detector).

3.0 Precautions 3.1 Prior to testing any detectors, notify the proper unit operator (unit where detector annunciates) as to which series of detectors will be tested and the area ~here they are located.

3.2 Coordinate with the shift engineer as to the need for fire watches when testing the COz system heat detectors'.

Refer to prerequisites 3.3 3.2 and 3.3 in SI-4.11.B.l.a for proper fire ~atch procedure.

Report all smoke and heat detectors that do not meet this document's operational and/or sensitivity guidelines to the shift engineer.

CAUTION: 'Testing should cease and the shift engineer should be.

immediately notified whenever more than one unacceptable 3 4 detector is found in the same area of testing.

Carefully observe procedure sequences to avoid spurious initiation of fire protection circuits.

Actuate ONLY one detector at a time.

3.5 When testing heat detectors, check the area for oil spills o" othe."

types of combustibles.

If any are present, have the area cleaned before test.ing.

3.6 Do not apply excessive heat to any one point on the heat detector sensors.

The heat source should not be applied closer to the detector than necessary to actuate it.

3.0 Precautions (Continued) 3.I Before doing any testing

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F Sj-4.1l.c.

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read and be familiar with the entire procedure.

3e8 Any discrepancy between the procedure and the system must be investigated.

The discrepancy could involve either defective 3e9 components in the system, imoroper installation of the system..or procedure errors.

'I Make sure the correct zone alarms when a detector is initiated.

Zone numbers are listed at the top of the data sheet and the zones e

are tested in alphabetical order.

3.10 If any smoke detector base mounting nylon screws are found broken or t

if any plastic insulating plates are missing, these must be

,replaced.

Use only Kidde part N601215, storeroom TIIC ERG-120P.

DO NOT ase metal access 4,0 Procedure 4.1 Test each detector according to its circuit function as follows.

Detector circuit function is listed on the data sheets for each group of detectors.

The method of testing each different detector model is described in section 4.2.

Location of local panels is in section 4.3.

Diagrams of test progression by area are in section 4;4..

4-.0 Procedure (Continued 4.2 (Continued)

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~1-4.11.C.1 6

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HEV O002 4.2.1.2 (Continued) voltage (hV) be less than Oe6 volts or greater than 2.0 volts.

Record hV on the data sheet.

Lock the. detector back to its mounting plate.

4.2. le3 Walter Kidde Co.

Model FT-200

,Momentarily apply the smoke source to the sensor of the smoke detector until the light on the detector is E

illuminated continuously.

Allow a few seconds for the detector to clears (The detector will clear more readily if it is fanned.)

Write N/A in the column for wire lifted on the data sheet.

Verify the annunciation will clear in the control room.

Sensitivit Test (SI-4.11.C.5 only check before applying smoke source to detector.)

Testing each

detector, use a stopwatch to determine the flash ra'te (seconds/flash) of the condition indicator light on each detector.

Time the detector for one minute while counting the flashes.

Divide the total time in seconds by the number of flashes that occurred during that time.

Calculate the flash rate to nearest 0.01 second.

Record this flash rate along with the flash rate stamped on the detector mounting plate in the appropriate column of the data sheet as shown below.

The calculated flash rate should not differ from the stamped flash rate by more than 10%.

Seconds

= Flash Rate.

Flashes Stam ed Flash Rate 0025p