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REGULATORINFORMATION DISTRISUTION OATEN (RIDE)

ACCESSION NBR 82P3309149 OOC PATE! 82/03/23 (OTARI'ZED: NOFACIL:50»389 'St. Lucie Planti„.Unitt 2E Florida 'Power K Light Co ~

AUTH'AMP AUTHOR AFFII,IATZONUHRIGE R ~ E ~ 'Fl orida Power 8 'Light Co.

RBCIP ~ NAME RECIPIENT„AFFIL'IATIONEISENHUTED.G. Division of Licensing

"SUBJECT: For,war ds response to request for addi info r e mini'urtgesos valves.

DISTRISUTIOIJJ„CODEl A03AS iCOPIES iRECEIVEDIL'TR . 'I ENCL,~( SIZEI "3 LTITLE: Containment ~Pur g i rig

NOTES!

DOCKET05000389

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P.O. BOX 529100 MIAMI,F L 33152

FLORIDA POWER 5 LIGHT COMPANY

Office of Nuclear Reactor RegulationAttention: Mr. Darrell G-. Eisenhut, Director

Division of LicensingU. S. Nuclear Regulatory CommissionWashington, D. C. 20555

Dear Mr. Eisenhut:

Re: St. Lucie Unit 02Docket No. 50-389Mini-Purge System ValvesRe uest for Additional Information

March 23, 1982L-82-110

MAP P9 )g8p~L$ irihmq RE~Iutnr C:l3

Q+Itgi7 @i~l!P1 )P'nttc

Attached is the Florida Power 8 Light Company response to the NRCstaff request for additional information regarding the St. LucieUnit 82 mini-purge system valves.

We believe that all staff questions have been responded to by thissubmittal.

Very truly yours,

o t E. UhrigVice PresidentAdvanced Systems 5 Technology

REU/RAK/ga

Attachments

cc: J. P. O'Rei lly, Director, Region II (w/o attachements)

Harold F. Reis, Esquire (w/o attachments)

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PURGE SYSTEM

1. QUESTION: Provide installation details for the containment mini purge valveI-FCV-25-26.

RESPONSE: The installation details fox the mini purge valve are provided onAttachment 1 (Ebasco Dwg. No. 2998-G-869, R.6). The general ar-rangement (P&ID) for these valves is provided in FSAR Figure 9.4-11.

k

2. QUESTION: Provide EQ and SQRT Qualification data'for mini purge valvesI-FCV-25-26 and I-V-25-25.

I

RESPONSE')I,

The SQRT qualification information for the above valves was sub-mitted to the NRG on December 2, 1981 (FPGL Letter L-81-507) inresponse to Questions, 271'.1 thxu 271.5 of the Equipment Qualifi-cation Branch — Seismic Dynamic Loads Section.

b) The Environmental Qualification for valve I-FCV-25-26 was sub-mitted November 1981 in response to the Generic EnvironmentalQualification Effort.

3. QUESTION: Provide the closure times for all the purge valves.

RESPONSE: Each purge valve is designed to close in less than 5 seconds.

4. QUESTION: What is the maintenance program for the butterfly valve rubber seat?

RESPONSE: A maintenance program will be developed for St. Lucie Unit f/2 simi-lar to St. Lucie Unit //1. The pxogram utilized for St. Lucie Unit/!1 involves testing to 10CFR50 Appendix J requirements. Seat leak-age tests are conducted every 18 months at each refueling outage.Any repair or replacement is done as required subsequent to the test.Inservice inspection is performed on the valves every 18 months inaccordance with the requirements of ASME Section XI.

5. QUESTION: Are all solenoids used with the valve operators environmentallyqualified?

RESPONSE: The mini purge valves utilized ASCO solenoid valves Part No. NP8321AIEwhich meet the requirements of IEEE-323 1974, and 344-1975 as sub-stantiated by testing valves of generically equal design in accordancewith ASCO qualification specification AQS-21678 Rev. 1, 2/15/78.

6. QUESTION: What is the'stablished ISX Pxogram for the valves?

RESPONSE: The Insexvice Xnspection Pxogram will. follow the requirements ofASME XI, 1977 Edition thru the summer l978 agenda. This programwill be submitted to the NRC for review and approval at a laterdate.

7. QUESTION: Do the purge valves have handwheels for manual operation and howdo you prevent overriding Automatic Isolation?

RESPONSE: The containment mini purge valves are air-operated valves withspring actuators provided for prompt closure. Those valves aredesignated containment isolation valves and receive the appro-priate CIAS for closure. Handwheels are provided for valveopening and are used only if the air supply is not available.Xf the handwheels are utilized fox opening during norma1 plantopexation, the valve will require the restoration of this in-operable valve to OPERABLE status within 4 hours or bring theplant to Hot Standby within the next 6 hours. These provisionswill prevent overriding of the Automatic Containment Xsolation.

8. QUESTION: How is closure of the check valve on the mini. purge makeup lineassured?

RESPONSE: During operation of the continuous Containment/Hydrogen PurgeSystem makeup aix is provided to the containment via penetra-tion P-56. The motive force behind this makeup air is

the'lightnegative pressure (approximately 3" W.G.) created insidecontainment by t'e operation of the purge system. Isolation ofthe makeup line is assured by a power operated butterfly valveand a swing type check valve. This check valve (I-V-25-25) isdesigned to open at 1.4" W.G. and is spring loaded to insureclosure as containment pressure approaches atmospheric. Thus,the valve disc would be at rest against the valve seat pxior tothe generation of elevated pressures inside containment due toa postulated accident. Valve integrity is further assured byits design pressure of 150 psig and a differential pressure testat 75 psig. This valve is manufactured'by GPE Controls to ASME

III, Class 2 standards and is seismically qualified.

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LOCATION OFLIHIT SWI TCHKS

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BY: DATECHKD By: DATE

Oua1i.ication Sur.—..harv of Eouiny-.en- 7 ~4

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Plant .'far"e: ST LUCIE UNIT NO. 2

Utility:FLORIDA POWER & LICHT CO.

~Toe:

PMR X

1

'IZe NSSS. CE

Concone.". Ha."s kPW3 A/E: aaaeco Bn'R

Pu(m S~C"P-'P'-Z>Zlg c 4Scope: 5 3 htSSS ~ SOP

//'Model Nunber: 8' gXVendor: rz~HH

Quantity:

4 If the ccnpcnent is a cabinet or panel, nar:.e and rachel No- m ~edevices included:

6. Location: Buiiding: VcFZV4'> Zdc"c'~~>>a

Eievation: Zev'd'

a

Co

Syst i in which loc'ted':

~ ~ ~

Is the equip;.ent required for ~ Hot Standby 5 3 Co<~Shutdoi

C 3 Both Cj lfw=r

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III. Is Eouip.-..ant Ptii iiahle for Insoeo:ion in the lit: p g Yas f g lio

IV. Eouiorent Qua15ficat'-ra ..ethod:

E 1 Test )~3 AnaIysis

'uaIiiioation Ileport: 57 ~ Zyn~+itHo., Titie and Date) 2>-iOO9'8 - /O Dl //

',Cospany that Prepared P. por: //w/ry'~a'7 PI

I

II

,'" Vibration Input:

I t.oads considered: a M Seis-.c only

E 1 Coriination of Tes-and Ana1ysis

b. {. g Hydrodynamic on1y

c. j g Corbination of fa) and (b)4

2. 'tethod of Comining RRS: t: g Absolute Sum t: g SRSSi

.3- Required Response Spec ra tattach the graphs):

4. Oarping Corresponding to RRS: OBE , 55E~&w~&M'wu~

E'3~o-ner, spec>~g

c'cpsf p f4. vAsOther gp ~/d/'a

\(

Required Acce1era ion in Ka& Direction: f g ZPAi

S/S I ' F/8 ~S/S~ ~ " f/8 ~

Mere fatigue effects or other vibration 1oads consideredT

OBESS"

6

'C 3 Yes '~ Ho:

Ifyes, describe broads considered and hew they vere tree;ed in overa?1qua1ification prograr-':

ONOTc,.

WW& WW&WW&W\~W~&W~Wa

I

If were than one report corp1ete items IY thru VII for each repor

12/BO

~ lN

'

1. I 3 Single Frequency

2. t. 3 Single Axis

f. j multi-rro""fancy:

t. j Hulti-Axis

YI. If Qua1ification by Test, then Co.-..piete~:t: g'andomC 1 sine ~ "L1

Nf

N

l(atural Freouencies in Each Oirec-ion (Si¹/Side, Front/Sack. Ver-ical):fi

S/S ~ Fz- fl v-NI

IN

8. Inout a-level Tes: OBE S/

SSK SSI

F/B ~ CN

:est Res its inclu

10. Functional ooerabil t -v rii ed: E g Yes 5 3 Ho 5 3 Not Applic ble

11 di ae f t d

Q

;,~!'ote: If qualification by a co~ination of test and analysis also co~Nlete

"Item YII

12/80

N

~ ~

H

VII~ If 0"aiifican by maiysis, then cn;..nIete: ~'%W W W

I. method o. Ana1ysis:

{. 3 Static Ana1ysis ~ Kquiva1ent Static Ana1ysis

E 3 Dyhamic Ana1ysis: f j Tire-History f g Response Spectrum

2 Natura1 rrecuencies in Each Direction (Side/Side, Front/Back, Ver-.ical):

280 H~ g s0&'Aae O&%%&WW

3. Hode1 Type: g g 30 E3~D ~ IDII

Hf g F'inite K1emnt f 3 Beam ~ Closed rorm Solu.

5- ."method of Comining Dynamia'c Responses: E 3 Abso1ute Sum E 3 '.PSS

M Other:SESS 2~o~lz, + uE~rtc~agspecivy)

6- Garying: OBE'SE Basis for he dampino used:W%%W~WW& w&w&w~

B. Hax. Critica1Def1ec ion l.ocat$ on

Maxirum A11cwaole Der lec.ionto Assure Font-iona1 Opera-bi1ity '

A/E: EBASCO SERV1CES INC..Uf ILITY: FLORIDA POKER b LIGHT

Q~~s zFAC}LITY:COMPO}4ENT

rd Tip

ST. LUCIE HO.EVALUAT}ON SHEET

NSSS: COMBUSTION ENG. - PVQCAPACITY: 890 MV(E )

.V~ 0CESe-0447

EOUI PM}N'f I ENVIRONMENTDESCR IP I }ON I PARAMETER SPECIF}ED

t DOCUMENTATION I DUALIF }

DEM. OUAL1F. I SPKClF lEO DEM. OVALIF ~ f ME }HOGI 2 -- «I--o -o3o -- 4- -- I -5 I

OUTS II TK}4S I

H/M!

oo6 I eo7o fTAG HO : FCV-25 26 (01AP I OPKRABIL-I

HRAGM.F.C. ) -- I: ITY I.==—-=-= INORM/TEST I

VALVES IOBA IEOUIPMENT:TYPE

II II II --- = I

COMB. ITEST 6EXTRAPOL'N !

HONE I ACCKL T}MK:

II ACCKL TEMP:el----

CDMPONENT: B'TFLYf TE}4PERAT t 9}.SF NORM

URE tI .---- = I ! }BF1200HR

I TA821F fI SL2 FSAR II 1'ABLE3}f-I I

COMB. ITKST 6 !EXTRA I

Mt

HONEf RKPLACEMENT:

MANUFACTURER:HENRY PRATTt I II o \ I T395 --

} I POL'N !ee a ea a o oe eo e e e e e eeeea! MA(NTA!N

~ I PRESSURE I ATMOS NORMI I OPS1G

I PAB21 I! SL2oFSAR I

COMB. ITF.ST 6 !

NONE II

14AJORSUPPL1ER

MODEL AND:.SER}AL V

*FUNCT.DES: CONT 1SOL: .'

SERV}CE CLOSE(C1AS)

TEST 6. IEXTRA I

I SPRAY f ~ II I - !

II f

I -. - 'I (ACC. OBA) I I TABLE3ft 1 I I EXTRAI I I } P394 - -- I I POL'NI e

I RELATlVE } 58.0% HORN I 'I HA827F= 'I I COMB.I HUMIOfTY f--. . . I I SL2oFSAR I 'I TEST 6 !I ~ I 60.0)(}200H !

' TABLE3}tet I- -. . } EXTRAI ==- .-= I;, „., I I H395 I I POL'NIICHK}41CAL I I I - - -I ..... I COMB. I

I

/ IIII

/ I

I SUBCOMPONENTS:I

e'I NO UNIOUE TAGGEDNONE I SUBCOMPONENTS ARK

., I ENVELOPED BY THISI KOU}PMENTI

o eeetHONK I

ACCUR. SPEC: HDTAPPL1CABLK oee ee\ e pt

~ COOQDlNATKS X- 609.0Y- }5!6.0Z- 45.0

T35.7P35 ~ 7H35.7

35.7R35.735.735.7

~ ~ e ~ ~ ~ ~ ee ~ ~ ~ e ~ ~ ~ e ~ e ~ ~ ~ ~ ~ eeeet }RAD}AT}ONPHYS DVG REF: 2998G.395PHYS DWG LOC:MOUN11NGEO.DOC.LOC:

'I AGINGISUBMERGENCE

!SAR ENV CAT: K

10588 CA 1 E G.: A!APPENDIX E

I It 2 HRI 480 3.0E4ACCUR. DKMot NOT I A 30 OI5.0ES 5.6ES

APPLICABLE I D t YR!1.3E5 5.8ESI . 40YR/R'@IS.OE3 5.0KS

SPEC1F 1CAT1ONS: It AGE-

P.O P:422537 I1NST L1FE Il(PEQ 323- I

PLA}41; LOC.: AB21 I!974 OEF.)III SUBMERGEOII YES/NO !I I} I

INSTALLED (Y/N): LTR IINSTAL. RKF:BY-FLO PARA SUPPL.

OUALIF EXEMPIN: NOT APPLIC I METER REVIEW~ ~ e ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ e ~ ~ ~ IOPERA81L I TY~ DUALIF: ~ ITEMPK'!ATURE~ STATUS ~ tPRESSURE

~ fREL. HUl4}O}TY~ ICHK}4. SPRAY

I I RAB27U It I SL2-F SAR II I TABLE31lef II R395 I

I }OCFRSO It I PARA 50.5}I I I

I I

I I II II II I I

o o

POL'N

COMB.TEST 6KXTRA-POL'N t

I COMB. II TEST 6 !

EXTRAoPOL'N !

oo eeetI NONE I

olHONK I

ISAFETY FUNCTION:

COMB. HOHEI TES! 6 } I I

EXTRA- I t I AUT}(. REFERENCE:'I POL'N I I I 3.9 }0

oo ee o ~ ee o

I OPERATING REFERENCE:

}PREP/DATE :C/5 SIGNOFFS!CHECK/DATE:OQ EOUIV. IN

KO. F ILEI OUALIF1CATIDN REFERENC'Ef RKV>- 0!PREP/DATE :CKS SIGNOFFStCHECK/DATE:OQ Enu}V. IN

KO; F ILESYSTEM

ITAG FCV ~ 25 26 }DIAP

HQAGM.F.C. }

I OIHER EOU}PMENT TH15 CES APPLIES 1'0:II FCVo25e! (PISTON,FC)III

REFEREHCES:

~ ~S%e

DISCUSSION ON MAINTENANCE PROCEDURES

RUBBER SEAT:

The rubber seat is made of RESILOSEAL N* which is an

ethylene propylene compounded specifically for nuclear service

under elevated background radiation and temperature levels.Although "indications show that RESILOSEAL N has an excellentservice life, not enough data has been collected to accurately

predict its expected life under varying conditions of use and

environment. It is. known that higher radiation levels and

temperature shorten the life expectancy of the seat. Failuremode is characterized by a shrinking along with a hardening ofthe rubber and eventual cracking.

For this reason we recommend the following semi-annual checks:

l. A visual inspection of the seat be made to check

for dimensional shrinking and cracking.

2. A Durometer reading be taken. (If a reading of over

75 is indicated, we recommend that the seat be

replaced.):These are strictly precautionary measures taken due to the

I'cceleratedaging '.caused by radiation and heat and the fact

..that relative life expectancy can change from installation to

, installation.

*Resiloseal is a trademark of Henry Pratt Co., Inc.

0-5.

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E

'4

For information about Pratt Rubber Seat Butterfly Valv

not conta

ative, or

ined in this manual, contact our local Sales Represe

write direct to:HENRY PRATT COMPANY

401 South Highland Avenue

Aurora, Illinois 60507

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REPLACING RUBBER SEAT IN NUCLEAR BUTTERFLY VALVE

A. DISASSEMBLY

1. Turn disc in open position.M

2. Remove adjusting screws in segments.II

3. ~Number all reta'ining segments and mark proper location"on valve body.

4. Pry segments out of body.

5. Remove old rubber seat.

6. Clean seat groove with clean dry rag.

B. INSTALLATION

l. Apply light coat of silicone grease to seat groove. *

2. Insert new liner seat into place by pushing rubber snug.

3. Insert segments back into body and install screws.

4. Close valve disc.5. Tighten all segment adjusting screws to assure reason-

able interference between seat and disc.6. Bubble or leak test valve and tighten adjusting screws

as needed to stop all apparent leaks.

M

I

*We recommend Dow Corning valve seal or Dow..Corning III Compound.Please note .that the use of Petroleum grease negates all guarantee

0-7

g~-s~ ~

math Sxvkek Co.' IManufacturere otDEPENDABLE CONTROL

Since 1SBS .?

ARK,NBVJERSEY 07N i NQP i2OO cee goo) N.Y;taQl 34.3reS

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CERTlFICATEOF GOMPLIANCE'

e I'CF Xndusteiesg X c.

..". Customer P.O. No.~ " ~ I ~ ~ ~ ~

'ASCO Shop Order No. 063 H~ ~

(

-: ASCOPaIINO. ~ ~~+ Ua((IIIP~ \

, ~ P wo, ~

pot~ l25"VDC Png Job No 672L5

CHECKEGK

BY(

~'

'

Peo certify that the subject valvegs) meet the performance requirements oflEEE-323-1974,

$82-1972 and lEEE-344-1975, as substantiated by testing valves ofgenerically equal designdance with ASCO Qualification Specificatio AQS -21678, Revision "B",2I15I78.

els-I

g Simolatio'n(

Thermal Aging—268 F for 12'days to simulate 4.4 years at 140 F ambient. The test temper-ature and period are based on the 10oC role (Arrhenius Equation).

'adiation Ayng —50 megarads ofgamma radiation at a rate not cxcccding 1 me arad per hour.I

Wear Aging —40,000 operations at maximum operating prcssure differential and nominal voltage

Vibration Endurance —1 mQlion cycles, 'distributed equally among the three orthogonal axes,between 50 and 100 Hz, at an input acceleration level of0.75g. The valves werc cyckd onceevery 15 minutes during the test. 'Xley werc attached to the table by rigid test fixtures using

. the standard valve mounting provisions, with the solcnoids vertical and u>tright..Flexible hoses~werc used at all ports; thercforc, the test setup did not affect the riydityor mass of thc valves

i .(buno tested.47 ~ ~~ (I

a ~ I

~

~ ~~ ~ ~

~~

e !c Event Simulation —The valves were attached,to the taHe by algid test.fixtures using the ~

, Mdvalve mounting provisions, with the solenoids vertical an8 upright. Flexible hoses wercat a11 ports; thercforc, the test sct-up did not affect the rigidityor mass of the valves beingd. The seismic shaker used had the followingminimum performance qharacteristicst

1-2 Hz ~ ~ ~ ~ I ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~6" double ampltu8c~\t e ~ ~O ~ 0 +0

2-33 ~ . ~ ~ ... ~ ~ ~ .. ~ .. 35 snrsec. velocity t'ai

acceleration required, thenconstant acceleration.

(I

C)perating Basis Earthquake (OBE) -'Ac valves were exposed to two sinusoida> sweeps aug".(within machine limits) in each orthogonal axis from 1-33-1 Hz, at 1 octave per ainotc,zone@veep with the valves cncrgbed and one with the valves dc-cneryzed. Thc two sine mvet.'ps arcdesigned to provide the mechanical aging of5 OBE's.

Paaclof2

l 'f I I ~

~l~ISECTION 2 DESCRIPTION OP TEST SAMPLES

The folloving descr p ioi tion of the valve samples vas provided by Automatic Switch

Co. Isomedix numbers vere marked on valve housing with a marker pen.

t ~ g ~ ~

TABLE 1

VALVE DESCRIPTION LIST

IsomedixNo.

8

ASCOCat. No.

HVA-206-381.-6P

NP8344A71E

HVA-206-380-3RP

NP8320A184E

NP831665E

NP8321A5E

DC Class H leaded coil, Nema 4, 7 and 9 solenoidenclosure, normally closed, 3-way construction vithmetal seating.

DC, Class H leaded coil, Nema 4, 7 and 9 solenoidenclosure, 4-way construction with resilient seating.

AC< Class H screw terminal coil, Nema 6 solenoidenclosure, normally closed, 3-way constructionvith resilient seating.

AC,'lass H leaded coil, Nema 6 solenoid enclosure<normally closed, 3-way construction with resilient

— -- — seating.1

DC, Class H leaded coil, Nema 4, 7 and 9 solenoidenclosure, normally closed, 3-vay construction vithresilient seating.

DC, Class H leaded coil, Nema 4, 7 and 9 solenoidenclosure, normally closed, 3-vay construction vithresilient seating.

NP8323A39E = {Solenoid A) AC, ClassClass H screw terminalnormally closed, 3-wayseating.

H leaded coil, {Solenoid B) DC,coil, Nema 6 solenoid enclosures,construction with resilient

0

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9 I

rt 0 9OI V 5 Qs

g4 n

Ql Ul Qt

r

9 ol0

8'0rt0 I

Ql0

I 8lA 'M

UlQl ~

pi

Q0

IVl 8cf'

rt P 8Q V 5rt

80

0N

4b Ql

nH0

CQ CATALOQNQ NP832IA1E g l25 VDC

B. Safe Shutdown Earthquake (SSE) —The valves were exposed to single frequency sinusoidal

tests at 1(3 octave frequency interv'al dwell points where the g-level was recorded atwhich'he

cylinder port pressure (zero when de-energized and fullinlet pressure when energized fora normaHy closed valve, opposite for a normaHy open valve) differed from the nominal by 0, 5and 10%%uo ofinlet pressure ]up to'10g maximum). The valves are considered to function properly

~: 'p to a 10jo change in cylinder poit pressure. (This level was selected as beino insufficient to: '. cause spurious shiiftingofthecustomer's main valve or other equipment). The duration of each' dwell was the time required to operate the valves through one complete openfclose cycle or 15

.. 'seconds, whichever was longer Motion was applie8 at the same frequency and acceleration': "'limitsin each of the three orthogonal axes separately.~ ~ ~ ~~ ~

'".'Maximum Acceleration: .-.i ~ ~ I~ +P ro~ ~

~ g ~

..; 3.0g a11 conditionsV ~ ~ ~ ~ ~

~ 4,~

~ ~

~ ~~ ~

o

~ ~~

~

Loss ofCoolant Accident (LOCA)-The valves were exposed to an accident dose of150 megarads

ofgamma radiation at a rate not exceeding 1 megarad per hour. The valves were installed in a pres-sure vessel and subjected to a 30-day exposure ofsteam and chemical spray followingthe suges-tions of lEEE-382-1972 (chemical spray per Table 1 (b) and test chamber temperature proQle perFigure 1 and Table 2). The valves had been pressurized to maximum operating pressure and contin-ously energized for 4 hours prior to the first transient (to produce coQ saturation). The;i were de-energized when the temperature of the est transient reached 280oF to show satisfactory shiftingfor demonstration ofsafety function. The valves were l'ept pressurized and were cycled duringthe 30 day exposure, as suggested in lEEE-382-1972, to demonstrate their aMity to operate ondemand during the XOCA. ~ ~

~ ~

The test report on AQS-21678 is on Gle at Automatic Switch Company'n Florham Park, NewJersey,

and is available for customer perusaL~ . r

OO'

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I,

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~ 'ated

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Authorized Signature

~te

/c~ ~

rich K.. PlautProject Engineer

~ 0

Page 2 of2~ ~ ~

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