ML17212B468
| ML17212B468 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 03/23/1982 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| L-82-110, NUDOCS 8203300149 | |
| Download: ML17212B468 (40) | |
Text
J REGULATORINFORMATION DISTRISUTION OATEN (RIDE)
ACCESSION NBR 82P3309149 OOC PATE! 82/03/23 (OTARI'ZED: NO DOCKET FACIL:50>>389 'St. Lucie Planti.Unitt 2E Florida 'Power K Light Co ~ 05000389 AUTH'AMP AUTHOR AFFII,IATZON UHRIGE R ~ E ~ 'Fl orida Power 8 'Light Co.
RBCIP ~ NAME RECIPIENTAFFIL'IATION EISENHUTED.G. Division of Licensing
SUBJECT:
For,war ds response to request for addi info r e mini'urtge sos valves.
DISTRISUTIOIJJCODEl A03AS iCOPIES iRECEIVEDIL'TR . 'I ENCL,~( SIZEI "3 L TI TLE: Containment ~Pur g i rig NOTES!
RECIPIENT ~COPIES REC IP I/NT ..COPIES ID CODE/NAgE LTTR ENCL ID CODE/NAME LATTR ENCL LIC BR 03 BC 01 7 7 INTERNALs IE 06 1 1 NRR REEVES iE 14 1 1 NRR.SHUMED 15 1 1 NRR/DE/EQB 09 1 1 NRR/DL/ORAB 10 1 1 NRR/DS I AORS 1 0 NRR/DSI/AEB 1 NRR/DSI/CSB 12 N /ETSB .08 1 NRR/DS I/RAB 11 1 REG F 04 1 1 RGN2 1 EXTERhlALe ACRS 13 10 10 LPDR '03 1 1 NRC,PDR 02 1 1 NSIC 05 1 NT I' 1 1 rTOTAL NUMBER OF COPIES REQUIRED ~ LITTR "33'NCL '32
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PURGE SYSTEM
- 1. QUESTION: Provide installation details for the containment mini purge valve I-FCV-25-26.
RESPONSE: The installation details fox the mini purge valve are provided on Attachment 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.
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- 2. QUESTION: Provide EQ and SQRT Qualification data'for mini purge valves I-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) in response 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 Environmental Qualification 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 in accordance with the requirements of ASME Section XI.
- 5. QUESTION: Are all solenoids used with the valve operators environmentally qualified?
RESPONSE: The mini purge valves utilized ASCO solenoid valves Part No. NP8321AIE which meet the requirements of IEEE-323 1974, and 344-1975 as sub-stantiated by testing valves of generically equal design in accordance with 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 of ASME XI, 1977 Edition thru the summer l978 agenda. This program will be submitted to the NRC for review and approval at a later date.
- 7. QUESTION: Do the purge valves have handwheels for manual operation and how do you prevent overriding Automatic Isolation?
RESPONSE: The containment mini purge valves are air-operated valves with spring actuators provided for prompt closure. Those valves are designated containment isolation valves and receive the appro-priate CIAS for closure. Handwheels are provided for valve opening and are used only if the air supply is not available.
Xf the handwheels are utilized fox opening during norma1 plant opexation, the valve will require the restoration of this in-operable valve to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or bring the plant to Hot Standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. These provisions will prevent overriding of the Automatic Containment Xsolation.
- 8. QUESTION: How is closure of the check valve on the mini. purge makeup line assured?
RESPONSE: During operation of the continuous Containment/Hydrogen Purge System makeup aix is provided to the containment via penetra-tion P-56. The motive force behind this makeup air is negative pressure (approximately 3" W.G.) created inside the'light containment by t'e operation of the purge system. Isolation of the makeup line is assured by a power operated butterfly valve and a swing type check valve. This check valve (I-V-25-25) is designed to open at 1.4" W.G. and is spring loaded to insure closure as containment pressure approaches atmospheric. Thus, the valve disc would be at rest against the valve seat pxior to the generation of elevated pressures inside containment due to a postulated accident. Valve integrity is further assured by its design pressure of 150 psig and a differential pressure test at 75 psig. This valve is manufactured'by GPE Controls to ASME III, Class 2 standards and is seismically qualified.
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S/S I ' F/8 ~ OBE SS" S/S~ ~ " f/8 ~ \( 6 Mere fatigue effects or other vibration 1oads consideredT
'C 3 Yes '~ Ho:
If yes, describe broads considered and hew they vere tree;ed in overa?1 qua1ification prograr-': WW& WW&WW&W \~W~&W~Wa I ONOTc,. If were than one report corp1ete items IY thru VII for each repor 12/BO
~ l' N YI. If Qua1ification by Test, then Co.-..piete~: t: g'andom
- 1. I 3 Single Frequency f. j multi-rro""fancy: C L1 1 sine ~ "
- 2. t. 3 Single Axis t. j Hulti-Axis 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/ F/B ~ CN SSK SS I
- 10. Functional ooerabil t -v rii ed: E g Yes 5 3 Ho 5 3 Not Applic ble 11 :est Res its inclu di ae f t d Q
~!'ote: If qualification "Item YII by a co~ination of test and analysis also co~Nlete 12/80 N
H
~ ~
VII~ If 0"aiifican
'%W W W by maiysis, then cn;..nIete:
~
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 0&'Aae O&%%&WW H~ g s
- 3. Hode1 Type: g g 30 E3~D ~ ID
~
II H f g F'inite K1emnt f3 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~a gspecivy) 6- Garying: OBE'SE W%%W~WW& w&w&w~ Basis for he dampino used: Maxirum A11cwaole Der lec.ion B. Hax. Critica1 to Assure Font-iona1 Opera-Def1ec ion l.ocat$ on bi1ity
Q~~s z rd Tip A/E: EBASCO SERV1CES INC. FAC}LITY: ST. LUCIE HO. NSSS: COMBUSTION ENG. - PVQ .V~ 0
.Uf ILI TY: FLORIDA POKER b LIGHT COMPO}4ENT EVALUAT}ON SHEET CAPACITY: 890 MV(E ) CESe-0447 EOUI PM}N'f I ENVIRONMENT t DOCUMENTATION I DUAL IF } H/M! OUTS I DESCR IP I }ON I PARAMETER SPECIF}ED DEM. OUAL1F. I SPKClF lEO DEM. OVALIF ~ f ME }HOG I TK}4S I I 2 -- <<I--o -o3o -- 4- -- I -5 I oo6 I eo7o f I:
TAG HO : FCV-25 26 (01AP I OPKRABIL-I I COMB. I HONE I ACCKL T}MK: HRAGM.F.C. ) -- ITY I I I TEST 6
.== -=-= INORM/TEST I EXTRA I I I EOUIPMENT: VALVES IOBA I I --- = I POL'N ! I ACCKL TEMP:
TYPE el---- f TE}4PERAT t 9}.SF NORM I TA821F f COMB. I M HONE CDMPONENT: B'TFLY URE t I SL2 FSAR I TKST 6 ! t f RKPLACEMENT: I .---- = I ! }BF1200HR I 1'ABLE3}f-I I EXTRA I t I I I T395 -- } I POL'N ! MANUFACTURER:HENRY PRATT I o \ ee a ea a o oe eo e e e e e eeeea! MA(NTA!N
~ I PRESSURE I ATMOS NORM I PAB21 I COMB. I NONE I
'I I I OPS1G ! SL2oFSAR I TF.ST 6 ! I 14A JOR I -. - 'I (ACC. OBA) I I TABLE3ft 1 I I EXTRA I SUBCOMPONENTS:
SUPPL1ER I I I } P394 - -- I I POL'N I I I e e'I NO UNIOUE TAGGED MODEL AND:. I RELATlVE } 58.0% HORN I HA827F= 'I I COMB. / I NONE I SUBCOMPONENTS ARK SER}AL FUNCT.DES: SERV}CE V CONT 1SOL: CLOSE(C1AS) I HUMIOfTY f--. I I I
==-
ICHK}41CAL I
~
I 60.0)(}200H
.-= I;,
. . I I
I I SL2oFSAR TABLE3}tet I-I H395 I - - I I
-I
'I TEST 6 !
} EXTRA I POL'N I COMB. I /
I I I o
., I ENVELOPED BY THIS eeet I HONK I I KOU}PMENT I
I SPRAY f ~ I I TEST 6. I I I - ! I f EXTRA I ACCUR. SPEC: HDT POL'N APPL1CABLK t oee ee\ e p oo eeet I It 2 HRI 480 3.0E4 I I RAB27U I COMB. I NONE I ACCUR. DKMot NOT I A 30 OI5.0ES 5.6ES t I SL2-F SAR I TEST 6 APPLICABLE I D t YR!1.3E5 5.8ES I I TABLE31lef I KXTRA-I . 40YR/R'@IS.OE3 5.0KS I R395 I POL'N t SPEC1F 1CAT1ONS: I ol t AGE- I }OCFRSO I I COMB. I HONK I P.O P:422537 I1NST L1FE I t I PARA 50.5} I TEST 6 ! I l(PEQ 323- I I I I EXTRAo SAFETY FUNCTION: PLA}41; LOC.: AB21 I!974 OEF.)I I I POL'N ! I
~ COOQDlNATKS X- 609.0 I SUBMERGEOI I I I COMB. HOHE Y- }5!6.0 I YES/NO ! I I I TES! 6 } I I Z- 45.0 I I I I EXTRA- I t I AUT}(.
REFERENCE:
} I I I I 'I POL'N I I I 3.9 }0 INSTALLED (Y/N): LTR I oo oo ee o ~ ee o INSTAL. RKF:BY-FLO PARA SUPPL. I OIHER EOU}PMENT TH15 CES APPLIES 1'0: I OPERATING
REFERENCE:
OUALIF EXEMPIN: NOT APPLIC I METER REVIEW I
~~e ~~~~~~~~~~~~~~~~~~~~~~~e ~~~ IOPERA81L I TY I FCVo25e! (PISTON,FC) }PREP/DATE :C/5 SIGNOFFS
~ DUAL IF: ~ ITEMPK'!ATURE T35.7 I !CHECK/DATE:OQ EOUIV. IN
~ STATUS ~ tPRESSURE P35 ~ 7 I KO. F ILE
~ fREL. HUl4}O}TY H35.7 I I OUALIF1CATIDN REFERENC'E
~ ICHK}4. SPRAY 35.7 REFEREHCES: f RKV>- 0
~ ~ e ~ ~ ~ ~ ee ~ ~ ~ e ~ ~ ~ e ~ e ~ ~ ~ ~ ~ eeeet }RAD}AT}ON R35.7 !PREP/DATE :CKS SIGNOFFS PHYS DVG REF: 2998G.395 'I AGING 35.7 tCHECK/DATE:OQ Enu}V. IN PHYS DWG LOC: ISUBMERGENCE 35.7 KO; F ILE MOUN11NG SYSTEM EO.DOC.LOC: !SAR ENV CAT: K I 10588 CA 1 E G.: A TAG FCV ~ 25 26 }DIAP
!APPENDIX E HQAGM.F.C. }
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 excellent service 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. Failure mode is characterized by a shrinking along with a hardening of the 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 aging '.caused by radiation and heat and the fact I'ccelerated
..that relative life expectancy can change from installation to
, installation.
*Resiloseal is a trademark of Henry Pratt Co., Inc.
0-5.
C f' E '4
For information about Pratt Rubber Seat Butterfly Valv not conta ined in this manual, contact our local Sales Represe ative, or write direct to: HENRY PRATT COMPANY 401 South Highland Avenue Aurora, Illinois 60507 I II tlf 1 Jl ~ I I
~ 1 II I
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REPLACING RUBBER SEAT IN NUCLEAR BUTTERFLY VALVE A. DISASSEMBLY
- 1. Turn disc in open M
position.
- 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 Please note .that the use of Petroleum grease negates III Compound.
all guarantee 0-7
g~-s
~ ~
math Sxvkek Co.' IManufacturere ot DEPENDABLE CONTROL Since 1SBS .? ARK,NBVJERSEY 07N i NQP i2OO cee goo) N.Y;taQl 34.3reS CERTlFICATE OF GOMPLIANCE
~ ~
I'CF Xndusteiesg e X c. I(
~
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~
Customer P.O. No.
" ~ I ~ ~ ~ ~
CHECKE 063 H GK wo,
'ASCO Shop Order No.
~
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-: ASCOPaIINO.
(
~~ \
~~+ Ua((IIIP
~ ~
t pot~ l25"VDC
, ~ P Png Job No 672L5
~
BY (
~
Pe o certify that the subject valvegs) meet the performance requirements of lEEE-323-1974, $ 82-1972 and lEEE-344-1975, as substantiated by testing valves of generically equal design dance 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 of 0.75g. The valves werc cyckd once every 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 riydity or mass of thc valves
~~
i .(buno47 tested. ~ ~
~
~
a ~
~ (I
~I e !
c Event Simulation The valves were attached,to the taHe by algid test.fixtures using the
~
~
, Md valve mounting provisions, with the solenoids vertical an8 upright.~ Flexible hoses werc ~
at a11 ports; thercforc, the test sct-up did not affect the rigidity or mass of the valves being
- d. The seismic shaker used had the following minimum performance qharacteristicst 1-2 Hz I ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 6" double ampltu8c 2-33 ~
~~ ~ ~
.~~ ... ~ ~ ~ .. ~ ..~
~ \t e ~ ~O ~
35 snrsec. velocity t'ai acceleration required, then 0 +0 constant acceleration. ( C)perating Basis Earthquake (OBE) I
-'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 arc designed to provide the mechanical aging of 5 OBE's.
Paaclof2
~l
~I l f I I ~
t ~ g ~ ~ SECTION 2 DESCRIPTION OP TEST SAMPLES The folloving descr ip tionio of the valve samples vas provided by Automatic Switch Co. Isomedix numbers vere marked on valve housing with a marker pen. TABLE 1 VALVE DESCRIPTION LIST Isomedix ASCO No. Cat. No. HVA-206-381.-6P DC Class H leaded coil, Nema 4, 7 and 9 solenoid enclosure, normally closed, 3-way construction vith metal seating. NP8344A71E DC, Class H leaded coil, Nema 4, 7 and 9 solenoid enclosure, 4-way construction with resilient seating. HVA-206-380-3RP AC< Class H screw terminal coil, Nema 6 solenoid enclosure, normally closed, 3-way construction vith resilient seating. NP8320A184E AC,'lass H leaded coil, Nema 6 solenoid enclosure< normally closed, 3-way construction with resilient
-- seating.
1 NP831665E DC, Class H leaded coil, Nema 4, 7 and 9 solenoid enclosure, normally closed, 3-vay construction vith resilient seating. 8 NP8321A5E DC, Class H leaded coil, Nema 4, 7 and 9 solenoid enclosure, normally closed, 3-vay construction vith resilient seating. NP8323A39E = {Solenoid A) AC, Class H leaded coil, {Solenoid B) DC, Class H screw terminal coil, Nema 6 solenoid enclosures, normally closed, 3-way construction with resilient seating. 0 rt 9 I 0 V O 5 9 0 ol I 8'M Q rt V P 8 4b Ql n
'08 0 5 Qs lA Q an O
C4 4 n rt 0 g rt 9 I Ql Ul Qt 0 I Ql 0 Ql Ul
~ I Vl 8 0
8 0 H 0 r pi cf' N
CQ CATALOQ NQ 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 at which'he cylinder port pressure (zero when de-energized and full inlet pressure when energized for a normaHy closed valve, opposite for a normaHy open valve) differed from the nominal by 0, 5 and 10%%uo of inlet 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 shiifting of thecustomer'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
"'limits in each of the three orthogonal axes separately.
~ ~ ~ ~
'".'Maximum Acceleration: .-.
i ~ ~ I~
~
+P ro
~
~ g ~
V
..; 3.0g a11 conditions
~ ~ ~ ~ ~
~ 4, ~
~ ~
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~ ~
~ ~
~
~
Loss of Coolant Accident (LOCA) The valves were exposed to an accident dose of 150 megarads of gamma 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 of steam and chemical spray following the suges-tions of lEEE-382-1972 (chemical spray per Table 1 (b) and test chamber temperature proQle per Figure 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 shifting for demonstration of safety function. The valves were l'ept pressurized and were cycled during the 30 day exposure, as suggested in lEEE-382-1972, to demonstrate their aMity to operate on demand during the XOCA. ~ ~
~ ~
The test report on AQS-21678 is on Gle at Automatic Switch Company'n Florham Park, New Jersey, and is available for customer perusaL r
~ .
OO
~ ~
h
~ ~
I
~ II ~ t ~ ~
e ~ 'ated Authorized Signature
/c rich K.. Plaut Project Engineer 0
Page 2 of 2 Ch s'nnesvj M'pAghr %,
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