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REQULAT INFORNATION DISTRIBUTION ~'TE)~1 {R IDB)
ACCESSION NBR: 8604180175 DOC. DATE: 86/04/)4 NOTARIZED: NO DOCVET ¹FACIL: 50-387 Susquehanna Steam Electric Stations Unit 1> Pennsglva 05000387
50-388 Susquehanna Steam Elec tv'ic Station. Unit 2. Pennsglva 05000388AUTH. MANE AUTHOR AFFILIATION
)(EISERi H. W. Pennsglvania Powev 5 Light Co;REC IP. NANE RECIPIENT AFFILIATION
ADENBAHiE. BWR Pv object Div ectorate 3
SUBJECT: Fov wards Rev,2 to Calculation KKC-FXN-059 h revisedDeviation Request 10 v e Fire *v ea D-3 boundav ies.Qualification of interfaces between 1 hv'rap matl 8< cabletv ag penetv actions discussed.
DISTRIBUTION CODE: A006D COPIES RECEIVED: LTR ENCL SIZE:TITLE: OR Submittal: Fiv e Pv otection
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NOTES: 'icy NNSB/FCAF/PN. LPDR 2cgs Transcv ipts.icy Nl'1BB/FCAF/PN. LPDR 2cgs Transcripts.
0500038705000388
RECIPIENTID CODE/NAl'1E
BWR PD3 PD 01
INTERNAl: ACRS 11ELD/HDB4NRR BWR DIRNRR PWR-8 DIRNRR KEN, JOh
Q FILE 04
COPIESLTTR ENCL
3 3
1 011 1
01
RECIP IENTID CODE/NANE
CAl'lPAQNONE
ADN/LFMBIE WHITNEY'NRR PWR-A DIRNRR BTANQp J 07NRR/DHFT DIRRQNi
COPlEBLTTR ENCL
1
01
2 2.1
1
EXTERNAL: 24XNRC PDR
NOTES:
021 1
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0305
TOTAL NUi'>HER OF COPIEB REQUIRED: LTTR 27 ENCL 24
E
Pennsylvania Power 8 Light CompanyTwo North Ninth Street ~ Allentown, PA 18101 ~ 215/ 770.5151
Harold W. KeiserVice President-Nuclear Operations21 5/770-7502
APR 34 1986
Director of Nuclear Reactor, RegulationAttention: Ms. E. Adensam, Project DirectorBWR Project Directorate No. 3Division of LicensingU.S. Nuclear Regulatory CommissionWashington, D.C. 20555
SUSQUEHANNA STEAM ELECTRIC STATIONAPPENDIX R-NRC REQUEST FOR INFORMATIONAND DEVIATION REQUESTSPLA-2619 FILES R41-2, A17-15
Docket Nos. 50-38750-388
Dear Ms. Adensam:
In accordance with a request from your staff, enclosed as Attachment A is acopy of PP&L Calculation No. KKC-FXM-059, Revision 2. This revision of thecalculation reflects agreements reached between our staff and your staff onthe topic of drywall fire wall failure due to duct loadings.
loDeviation Request No. g has been revised and is provided as Attachment B.The top floors of Fire Areas D-1 and D-3 contain safe shutdown equipment,however, they do not contain redundant safe shutdown equipment. Thepreviously submitted text had omitted the word "redundant" in the paragraphdescribing the existing arrangement.
Your staff also requested information regarding qualification of interfacesbetween one-hour wrap material and cable tray penetrations.
The qualification of the Susquehanna SES one-hour wrap system relies on thegeneric test performed by the wrap manufacturer, TSI. The results of thattesting are provided in TSI Test Report No. I.T.L. 82-11-80. The wrappingdetail used at penetrations in the generic test configuration does notcorrespond to the detail typically used at Susquehanna SES. Therefore, toqualify this wrapping detail, we rely on a Susquehanna SES specific testperformed by Southwest Research Institute. The results of that testing areprovided in Southwest Research Institute Test Report No. 01-7163, provided tothe NRC in PLA-1250, dated August 25, 1982.
The Southwest, Research Institute testing demonstrates the acceptability of theSusquehanna interface design. The results of that testing are summarizedbelow:
Interface treatments used during testing are detailed below. Thesetreatments were representative of configurations contemplated for use atSusquehanna SES. 8604180175 860414
PDR ADOCK 05000387PDR
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APR -1 4 $S86Page 2 SSES PLA-2619
Files R41-2, A17-15Ms. E. Adensam
1. North side trays 1&2: interface caulked with Dow Corning 732caulk.
2. North side trays 3&4: interface caulked with Dow Corning 790caulk.
3. South side tray 1: 1-in. M-board with kaowool.
4. South side tray '2: 1-in. M-board with kaowool and Dow Corning790 caulk.
5. South side tray 3: 1-in. M-board with kaowool and Thermo-Lag330-1 applied with caulking gun.
6. South side tray 4: 1-in. M-board with kaowool and Dow Corning732 caulk.
Interface thermocouples are located as shown on Test Report Figures 12,13, 14, & 15, Attachments C, D, E, & F to this letter. Maximumtemperatures measured during testing are as. follows:
Thermocou le Location Maximum Tem erature
Tl-14Tl-3 -Tray 1
T2-14T2-3 -Tray 2
439'F469'F
214'F188'F
T3-14T3-3
-T'ray 3229'F175'F
T4-14T4-3 Tray 4
191'F246'F
The failure on Tray //1 with respect to satisfying the temperature risecriteria is considered to be a test anomaly. Due to scheduling constraints,the test was conducted prior to completing the curing of the tested sample.We believe the failure of Tray $/1 can be attributed to inadequate curing andnot the interface configuration. Tray //1 contained identical cables to thosein Tray 84. The north side Tray 81 interface detail was identical to the Tray//2 interface detail which was found to be acceptable. The interface detailused on the north sides of Trays 1&2 are representative of the interfacedetail employed at Susquehanna SES. The south side Tray 81 interface detailhas not been used at Susquehanna SES.
Attachment G depicts the interface configuration used at Susquehanna SES.
Deviation Request No. 10 is provided as Attachment H. This request isprovided as a result of modification to the "C" Diesel Generator Bay adding a
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APR $ 4 1986Page 3 SSES PLA-2619
Files R41-2, A17-15Ms. E. Adensam
2200 gallon waste oil tank. This modification was made because of theaddition of the fifth diesel generator. The fifth diesel generator, althoughlocated in a separate structure, relies on the waste oil storage tanks in the"C" bay should drainage of the diesel for maintenance be required. It ispostulated that should more than one diesel be down for maintenance, an amountof oil could be stored in the "C" bay which would result in a combustibleloading in excess of three hours. The deviation requests that the existingthree-hour walls of the fire area be considered adequate.
The addition of the fifth diesel generator has caused us to modify eachexisting diesel generator bay adding a transfer panel and associated cablingon the upper elevations. Previous to these modifications, each bay upperelevation contained only fans and HVAC support equipment for the specificdiesel generator. Previously, fire detection equipment was not provided onany of the upper elevations. After reviewing the new configuration we haveelected not to add detection on these upper elevations. This decision isbased on the factors listed hereinafter: All cables are run in conduit withonly one path of safe shutdown equipment present on this elevation (710'-9")of each bay; the overall combustible loading in each location is low,consisting of only cable insulation located in panels and electric motors,with no concentration of combustibles; transient combustibles are expected tobe low since to introduce them would require carrying them up 'stairs; there isno continuity of combustibles which would be conducive to the':spread of afire; it is possible that a fire would remain isolated and may not be able toproduce smoke in sufficient quantities to activate a detector.
1
Should you have any questions regarding this letter',''lease call'. „
Very truly yours,
H. W. KeiserVice President-Nuclear Operations
cc: M. J. Campagnone USNRCR. H. Jacobs USNRC
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=':-'~cAttachment A -,
caLc. IIo. SAFETY-RELATED
ASME IIIOR XIFILE IIO. OTHER QUALITY Q
~/A NON QUALITY gPROJECT ER/CTN NO. I lE - O3
DESIGN ACTIVITY/PMR NUMBER 4 rS Z-o 0 PAGE I OF
TlTLE/DESCRIPTION hc ~r a L:~ F s X~ ',i +. F.'her
STATEMENT OF PROBI.EM per- ayga~I Cg ~I py~gg ~~.Op~p
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as,svre t:hp~ Vice. indvc.cd d3wlage, to )he, HvAC. dvcts a+d supjo&gdoes not I c sulk in ~aII 4 ailyrc.
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DESIGN BASIS (DC020.'. 0 OR DC020. I )
~ This 8esip~ is hazed pn the inzor~a4ion eon+a @led, in E~A+SS pod'Oi 5SE.A gee.tiori >,$. 2, 2. and It LA ASK, Q <gc,vga ious uPGC c Begcvith QS Kohn conc, min~ t his g~Qect: an4 n '4 Ci.ue.5 pro~
GPIYUCl EAR RKC. SYS.
REFERENCES/FORMULAE
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PPd,l Form 2454 {1583}cai. eoruoi
Attachment A
.~i:L":::Date MM-'19~MDesigned by -~~Approved by
„„,*, * .~vvCALCULATIONSHEET vtjKK dt
PROJECT Sht. No. ~of~5, - 0 IS I
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t'~ ~ Attachment A
PPd,L Form 2454 (tqr83)Cat. ttg73401
Dept.
DateMM'19M'esigned bf'-~t~
Approved by
*CALCULATIONSHEET
PROJECT Sht. No. ~ofEmAN nEs <-o Zo t3 ~tper
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A typical installation ot the Ruskin I802 Style A Fire Oamper Isshown. Sleeve can be supplied by Ruskin with damper Installedready lor Installation or contractor fabricated. Specific requirementstor an approved Installation Include the following. ISee appropriateinstallation insttuctlons lor complete installation requltements.)
Opetlings Itl Iloof of wall shall be 1/S pef foot gteatef thatl dsnlpefditnensions I3II0 greater per toot Iot stafnlessk Minimum clearanceot tfa required lor any installation.
Sleeve gage shall be at least equal to lhe gage of the duct as definedby the appropriate SMACNA Ouct Construction Standard. as descnbed In NFPASOA, when one or more ol lhe following Duct SleeveConnections are used: Plain S Slip, Hemmed S Slip, Standing S Slip.Reinforced Standing S Slip, Inside Slip Joint, Double S Slip.
It any other Ouct Sleeve Connecllons are used. the sleeve shall beminimum 15 gage for dampers up to 30 w x 2a'h and ti gage itwidth exceeds 30'r height exceeds 2a'.
Mounting angles shall be minimum ol ttrt x IV> x ta gage andbolted. tack welded or screwed lo sleeve al maximum spscrng ot 12and with minimum ol Iwo connections in each side, lop and bottom.Mounting angles shall overlap wall a minimum ol one inch on all loutsides.
Damper shall be bolted, tack welded or screwed lo sleeve on Samespacing as angles.
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PPal. Form 2454 (10/83)Cab «9>2401
Attachment A
Oate ~16=i'esigned
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Sht. No. 0 of3
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~ ~ \ PP6 L Form 2454 (10/83)Cat. 4073401
Attachment A
'<Dept. &< ='vrjDate ~M'19MDesigned by.
Approved by
* ~l+ 2CALCULATIONSHEET g I(.. Wrhd- Fxw-e~
PROJECT Sht. No. ~of I
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PPKL Form 2454 (1183)Cat. N973401
1'-'~;" -Attachment A
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EggggEERING PROCEDURE NOJ
Attachment A
DUCT CONSTRUCTION MANUAL
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90A-16 hlR CONDrrtoNING hND LATINGSYSTEMS
Detention and Cttrrcccional Occupancies. Residen-tial-restrained. caregjiizial'f institutions, reformatories,jailS, detentiOn Cmte&COdrreertlOnal inStitutiOnS.
Residential. HojeisFmoteis, apartments, apartmentsfor the elderly, dormicorieS';orphanages for age six yearsand older, lodging or rooming houses, one and two fami-ly dwellings.
A-2-2.1.2(a) Exception No. 2: One method of defin.ing low-smoke producing materials is by establishing anacceptable value of the visible smoke produced per theUL 910 test to a maximum peak optical density of 0.5and a maximum average opncal density of 0.15.
Similarly, fire.resistant cables may bc defined ashaving a maximum allowable flame travel distance of 5.0ft (1.5 m) in the UL 910 test.
A-2-2.1.2(e) Gypsum board may bc used in plenumswhere the air temperatures do not exceed 125 F and thegypsum board surface temperature is maintained abovethe air stream dew poi'nt temperature.
A-2-2.5 For a definition of exit, see NFPA 101, LifeSafety Code.
A-M.I See "Hygienic Guide Series," American In-dustrial Hygiene Association, which may place morerestrictive hygiene requirements on the system. See alsoNFPA 91. Standard for the Installation of Blower andEsthaust Systems for Dust, Stock, and Vapor Removal orConveying.
A-2<.2.2 Combustible adhesive coating tanks intowhich removable filters are dipped should bc located out-side the building or in a separate fire.resistive room. Suchtanks should bc of metal, equipped with tight-fittingcovers, and kept tightly covered when not in actual usc.
A-2-7.4 See in particular the sections of NFPA 51,Standard for the Installation of Oil Burning Equipment,and NFPA 54, National Fuel Gas Code, which addressfurnaces used with refrigeration systems.
A-2-7.6 The installation of approved automatic ex-tinguishing equipment employing water, inert gas, orother approved means, in the enclosure of thc air condi ~
tioning system to protect against. combustion of materialthat may accumulate~is~recommended for systems otherthan those of the'niL'~ref'abjnjc typg.with blower capac-icy not exceeding 20+0~"(9440 K/sec) and which sup-
ly only one floor,'ar'ca~or" <g'ortion thereof. Where sprin-ers arc installed js'udtcable<ppyision should bc made for
drainage includindg/adequate'rovision for overflowdrains from any oil reseivoirs installed ac filters. In.buildings not otherwisc equipped with automatic sprin-klcrs,. che water supply may bc taken from the house pip-ing, if the supply is adequate for thc purpose.
A44.2.2.1 Exception (a). See Section 4-2 and Appen-dix C.
A~.5 For information on designs of fire-resistiveassemblies incorporating air handling components, secUL Fire Resistance Directory under "Floor-CeilingDesigns" or "Roof-Ceiling Designs."
A-S-S.7,2.2 Fire dampcrs are of no fire protectionvalue unless they remain in place in thc protected open-ing, even in the event ductwork collapses during a fire.To accomplish this, ductwork should not be continuousthrough a partition opening,'ut should connect on eachside of the partition to a damper installed in a sleeve orframe secured by perimeter mounting angles on bothsides of the openihg, or as listed.
For specific details regarding sleeve thickness,erimeter angle dimensions, size and frequency ofasteners, clearance for expansion, duct-sleeve connec-
tions, and fire damper access doors, refer to the manufac-turer's installation instructions.
AA-2 Such systems may be installed in any buildingand may be required for certain occupancies by the au.thority having jurisdiction. A building having two ormore stories or zones required to be separated by con-struction thac will restrict the spread of smoke or fire and(a) in which it'is determined that evacuation time is ex-cessive, or (b) in which evacuation is not practicalbecause occupants are incapable of self-preservationbecause of age. physical or mental disability, or becauseof security measures not under occupant control, wouldbenefit from a smoke control system. A smoke controlsystem may involve air conditioning systems alone:.or in.combination with other systems such as emergencyrvent-ing, pressurizing and fire suppression, taking into,ac-count stack and wind effect of multiscory buildings tUsersof this standard are encouraged to use a recognized'timedexit calculation technique to determine whether evacua-tion times would be excessive for a particular occupancy.Appendix C includes considerations and guidelines forsmoke control systems.
A-4-4 The protection provided by the installation ofsmoke detectors and other requirements of Section 4-5 isintended to prevent the distribution ofsmoke through thesupply air duct system and, preferably, to exhaust asignificant quantity of smoke to the outside. Neitherfunction, however, will guarantee either early detectionof fire or the detection of smoke concentrations prior todangerous smoke conditions ifsmoke movement is otherthan through the supply air system. Where facilitysmokecontrol protection is determined to be needed, a specifi ~
cally designed smoke control system including placemencof smoke detectors at locations that will assure earlydetection of developing smoke conditions and initiationof the smoke control measures should be provided. (SeeAppendix C.)
Appendix B Maintenance
This Appendix is not a part of this NEPAL document, dus is includedfor information purposes only.
B-I General.B-l-l Beyond the scope of this standard lies thc impor-tant responsibility for the maintenance of equipmenc.This includes periodic checki of the detection and controlequipment, damper and motor operation, and cleaning
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PPdI. Form 2454 {1083)~~Cat: N97340l" ~ ~ ~ ~ *-
-At'tachment A
%A
Dept.y.-gri irre~
Date
Designed;$ i'ir,"i>'n'."Approved:
IFg42K+'ENNSYLVANIAPOWER &LIGHTCOMPANY ER No. CkSV
et v~rPROJECT Sht. No. ~lof~I
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February~
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Attachment B
DEVIATION REQUEST NO. 19PAGE NO. 1
APPENDIX R DEVIATION RE VEST
INCOMPLETE FIRE SUPPRESSION AND FIRE DETECTION IN DIESEL GENERATOR FIRE AREAS
We request approval of the following:
Existing fire protection in Fire Areas D-1 and D-3, consisting of automaticsuppression and detection in the basement (EL 660' 0") and ground floor(EL677' 0") only, is adequate to protect essential redundant safe shutdownequipment located within the, fire areas. Specifically, no automaticsuppression 'or detection is required for the top floor,,(EL 710' 9").
t
FIRE AREA AFFECTED:
This deviation covers Di'e'sel'enerator Fire Areas D-1 (0-41A) and D-3 (0-41C).Fire areas D-2 and D-4 do not contain essential redundant safe shutdownraceway and, therefore, are not in deviation.
REASON FOR DEVIATION RE VEST:
The requirements of 10CFR50, Appendix R, Sections III.G.2 require firedetection, and fire suppression when redundant safe shutdown raceway existwithin a fire area. NRC guidance indicates fire detection and suppressionshould be provided throughout a fire area. Portions of the Diesel GeneratorBuildings do not satisfy these requirements.
EXISTING ARRANGEMENT
Fire Areas D-1 and D-3 contain essential safe shutdown equipment. Automaticsuppression and fire detection is provided for the basement (EL 660'0") andthe ground floor (El. 677'0") of each Fire Area.. The top floor of each FireArea (El. 710'9"), neither of which contain redundant essential safe shutdownequipment, are not provided with fire suppression or fire detection.
JUSTIFICATION:
The top floor (El. 710'9") of each Fire Area contains fan equipment only, haveminimal combustibles, and do not contain any redundant safe shutdown racewayand consequently do not present a hazard to redundant safe shutdown racewaylocated in the basement elevations.
Rev. 1, 4/86
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21
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Figure 12. Thermocouple Locations - Cable Tray No. 1
Attachment D
22
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Data Therznocouples located on center cable (W-141)at 12 o'lock position at I ft inte~als,
Figure 13. Thermocouple Locations - Cable Tray No. 2
Attachment E'
Cable Tray No. 3: 18" Ladder Back30'o Cable Loading
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Figure 14. Thermocouple Locations - Cable Tray No. 3
Attachment F
24
Cable Tray No. 4: 18"- Solid Back withone layer of cable
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Figure 15. Thermocouple Locations - Cable Tray No. 4
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. INTERFACE —i HR.REF. PP5L TEST
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5 HR. SILICONEPENETRATION SEAL
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Attachment H
Deviation Request No. 10Page No. 1 of 3
APPENDIX R
DEVIATION RE VEST
FIRE AREA D-3 BOUNDARIES
DEVIATION RE VEST:i
We request approval of the following:
The three hour rated fire walls for Fire Area D-3 are adequate based onthe fire protection, the dikes provided for dirty oil tanks, and thelow probability that the maximum, potential combustibles will beinvolved in a single fire.
FIRE AREA AFFECTED:
This deviation affects Fire Area D-3 (Fire Zone 0-41C). The ad5acent FireAreas are D-1 (Fire Zone 0-41A) and D-2 (Fire Zone 0-41B).
REASON FOR DEVIATION RE VEST:
NRC guidance to 10 CFR 50 Appendix R requires fire area boundaries shouldbe rated for 3 hours or the rating should be based on the combustibleloading, and all combustibles shall be considered consumed. A modificationto the "C" Diesel Generator Bay is adding a 2200 gallon waste oil tank. Ifboth the new and existing dirty oil tanks are assumed full and allcombustibles consumed then the loading exceeds the 3 hour rating of thefire barrier.
EXISTING CONDITIONS:
I. Protection
All diesel generator fire areas are provided with fire suppression andfire detection for the basement and ground floor elevations. The topfloor has no detection or suppression. Essential safety shutdownraceways protected by a 1 hour fire rated wrap are located in thebasement of D-1 and D-3.
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141
4'
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Attachment H
hK
Deviation Request No. 10Page No. 2 of 3
II. Combustibles:I 1
I
Fire Area D-3 will have the following in-situ combustibles:
~Te uantit ~Sever1t (Min)
CableLube OilDiesel Fuel Oil
1231bs1600gal550gal
3.681.027.'
Total 112.2mint
When the largest diesel is being maintained a total of 1860 gallons oftransient lube oil could be iy Fire Area D-3. This would result in a totalcombustible loading of 3 houq and 25 minutes.
In the event that two diesels would be required to undergo maintenance atthe same time, the fire severity would be 4 hours and 46 minutes; theprobability of this situation arising is considered to be small.Additionally, taking a second diesel generator out of service would beunscheduled and would require technical specification action.
III. Arrangement
Both dirty oil tanks are located in the east end of the basement of the "C"Diesel Building. Each is independently provided with a diked area designedto contain the entire tank contents with allowance for fire protectionwater.
The 550 gallon diesel fuel day tank is located at the west end of theground floor.
JUSTIFICATION
The oil hazards are properly protected including individual dikes. Thedirty oil tanks will not normally contain oil.The existing dikes will limit the heat release rate and allow the sprinklersystem and/or manual fire fighting to gain control of the fire prior to 3hours.
It is also reasonable to assume that the lube oil in the diesel crankcasewould not be involved; and the fire would involve either the dirty oiltanks or the fuel oil day tank.
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Attachment H
Deviation Request No. 10Page No. 3 of 3
The dirty oil tanks will normally be empty. It is not considered likelythat more than 1860 gallons of dirty oil will be present at any one time.The maximum of 3400 gallons of dirty oil would only result from thesimultaneous maintenance of two diesel-generators, and this is not aplanned event in the 40 year station life.The existing fire rated barriers consist of 24" concrete walls. While thewalls would be expected to provide at least a 5 hour rating, there areapproximately 30 penetrations with only a 3 hour rating. There are nodoors, HVAC ducts, etc. requiring rating in these walls.
It is reasonable to conclude, base on the actual hazards, protection inFire Zones D-l, D«2, D-3 and arrangement of the combustibles, that theexisting three hour rated walls are sufficient.
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