ML20002B758

Forwards Revised Data Sheets in Response to IE Bulletin 79-01B, Environ Qualification of Class IE Equipment.

ML20002B758
Person / Time
Site:	Prairie Island
Issue date:	12/05/1980
From:	Gilberts D NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-79-01B, IEB-79-1B, NUDOCS 8012220734
Download: ML20002B758 (7)

Text

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MSP NORTHERN STATES POWER COMPANY M IN N E A PO LI S, M 8 N N E SOTA 55401 December 5, 1980 Mr. James G. Keppler Director, Region III Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 799 Roosevelt Road .

Glen Ellyn, IL 60137

Dear Mr. Keppler:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 and 50-306 IE Bulletin No.79-01B Enclosed are revised data sheets for Bulletin No.79-01B. As requested, the areas of submergence and operating time were addressed for the BIW cab le. The other data sheets are enclosed to cicar up the qualification of pressure and to note the addition of Conax fittings for limit switches.

Yours truly, D. E. Gilberts Senior Vice President Power Supply cc: Mr. G. Charnof f Mr. C. D. Feierabend, NRC Resident Inspector h7C Office of Inspection and Enforcement Washington, D. C. 20555 Enclosures b o to La EG:nk g

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NORTHERN STATEo POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket No. 50-282 and 50-306 LETTER DATED DECEMBER 5, 1980 RESPONDING TO NRC REQUEST FOR INFORMATION IN IE BULLETIN 79-OlB Northern States Power Company, a Minnesota corporation, by this letter dated December 5,1980, hereby submits information in response to NRC request for infomation concerning IE Bulletin No.79-01B.

This request contains no restricted or other defense information.

NORTHERN STATES POWER COMPANY By:

D. E. Gilberts Senior Vice President Power Supply On this d day of 0 ('g1C 48M , 19 , before me a notary public in and for said County, personally appeared D. E. Gilberts, Senior Vice President Power Supply, and being first duly sworn acknowledged that he is authorized to execute this document on behalf of Nerthern States Power Company, that he knows the contents thereof and that to the best of his knowledge, infor-mation and belief, the statements made in it are true and that it is not inter-posed for delay.

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SYSTD1 CXXMT2;T EVALUATION UCPESIIEEP Rev. 5 11/25/60 UNIT: Prairic Island Unit 1&2 ,

DOCKET: 50-282.6 50-306

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DOCQ217FATION REF* QUALIF OUTSTidDING ENVIRONM ENT,

. @ IfMEI?P DESCRIPTION r PAPATITR SPECIFICATION QUALIFICATION. SPEC. QUALIF. MEIIIOD ITDIS SYSTil4: Untat Purge (Z1' ) OPERATI?G PI D ?O. :

TDE 2 HOURS 200 hr 1 4 NONE j COfMEIIP: TE@. t Limit-Switch 161. F o .

Deg. F 200 F 2 4 h0NE MANU FACTUR ER : PRESSURE (PSIA) 14.6 psia 2.6 psia 3 5 Set Note 2

'? MODEL hW3ER: RELATIVE 4

>' EA-170

, LU1IDITY NOT REQUIRED 100% NONE e

(t) _ _ _ .

FUNCTION: CHDLICAL Position Indicat0R ;gpgA7 M W N.D M ACCURTCI: SPEC.. NR 7 8 DDON: NR RADIATION 2.7 x 10 RADS X 10 1 4 NONE SERVICE: Unit I Cat Pur .e 200 hrs ti 200 F

(;DX; 4 NONE IDCATION

Annulus .-1 ,

100,000 cycles 1 r 1140D LLVEL EIS/: NR SUB-

ADOVE E700D LEVEL: NR -

NONE XUETrATION REFERENC1'S: ME:

']) Engineering Evaluation' 1) Limit switches for valves: CV-31310,CV-31312

2) FSAR Fig. G.3-4 CV-31569, CV-31621, CV-31622 CV-11633

.3) FSAR. Fig. G.3-5 .

2) 2.6 psia is a partial vacuun compared to standard r' eau sea level pressure (14.7 psie),

4) _ ACME-Cleveland Development Co. -Qualification therefore satisfies the st:ccifice.ticn of  ;

of NAMCO Controls Limit Switch-Model EA-170, REV. I 14.6 psia ~

dated 7/24/78 5)

Letter f rom Robert Kantner (NAMCO) to Paul T. Koska [

l(M.P) dated November 16, 1980. r t

_ . . .~ _ , _ . _

t NAMCO CONTROL S O 7567 TYLER DOULEVARD . MEf, TOR, OHIO 44000 (216) 94G 9500 November 18, 1980

!!r. Paul T. Roska Northern States Power Company Prairic Island Nuclear Generating Plant R.R. #2 Welch, Minnesota 55059

Subject:

EA170 _ 302 Limit Switch

Dear !!r. Roska:

We are replying to your recent letter requesting infornation regarding the pressures to which the subj ect switch is qualified. You specifically mentioned a partial vacuum.

The EA170 _ 302 switch was not pressure tested during qualification since the intended use of this switch is outside of the containment area. During manufacture of this model switch, it is subjec ted to an internal pressure of 12 PSI in order to check it for gasket leaks.

The EA180 switch was subjected to a maximum pressure of 70 PSI during LOCA testing and each switch is internally pressurized to 12 PSI during fabrication.

Yours very truly, n

. . l! _ m N

Robert ll . I'a n t ne r Staff Sales Engineer NA!!CO CONTROLS RliR/k;;

cc: D. Clark I. Scheel L] nn Acme-Cvve a a company r

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SYSTC4 COMPONEttr LVALUATION WPFSilELT Rev. 3 11/25/80 UNIT: Prairic Island.-1 & 2 l DOCIEP: 50-282 & 50-306-

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ENVIRONMENT DOCUEtTTATION IEF* QUALIF OlfTSTANDING CJIDSTP DESCRIPTIO:1 PARVILTER SPECIFICATION QUALIFICATION SPEC. QUALIF. METilOD ITD1S SYSTU4: CNT Purge (ZP) CPERATED PINir 'ID ID. : 2 '110URS 5 See~ Note 2 CDMPONENT: TDIP.

Limit Switch. 268*F 1 See Note 2 g, p .

MANUFACTURER: PIESSURE NAMCO ~ .(psyn) 60.7 psia 1 See Note 2 l> M3 DEL NUMBER: RELATIVE IILMIDITY 100% 4

? D2400X See Note 2 u (%) _ _ _

EUNC'rION: CIID1ICAL 11 0 aOH 3 3 2 Closed Indication sppAY pil 9.0 - 9. 5 See Note 2 l

ACCURACY: SPEC. NR DDON: NR RADIATION 3.6'x 10 Rads 3 See Note 2 SERVICE: Purge Exh 1&2 Purge Supply.162 Aggn See Note 2 LOCATICN: CNT FIJJOD LEVEL ELEV: 706 SLE-E None

- ABOVE FID0D LEVEL:- Yes

• DOCLDCfrATION REFEPE:CES: IUTES:

1) ' FSAR chap 5 Figure 5.2-7 1) Switches for Valves: CV-31311, CV-31315

2) FSAR chap 6 Sect 6.4.3 CV-31634. CV-31636

' 3) FSAR chap 7 Page 7.5-12 (Closed Indication Switch)

4) FSAR chap 5 Tabic 5.4-4 2) _ Not Environmenta11y Qualiffed

-5) Engineering Evaluation Will be replaced during next outages.

Req. #'s: G-655318 & G680001 Will install Conax fittings to hermetically seal switches during next outages.

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! SYSTD1 Cotm:127F EVALUATION WPESIIFrr Rev.5 l 11/25/E0

' UNIT

Prairie Island Unit 1&2

DOCKUr

50-282 & 50-306

.D2UIDENT DESCRIPTION ENVIRONMENT I PARAI*L:E R SitC1FICATION QUALIFICATION SPEC. QUALIF. MEI110D ITEG

SYSTD1

.cntmt rurge gi ) OPEPATING i PIIRr ID ID.:

' RIFE 2 IIOURS I See Note 2

-See Note 1 OJtMJENT: TEMP.

' Limit Switch geg. p 268'F 2 See Note 2

) MANUFACTURER: PPESSURE NAMCO (pgIA) 60.7 psia 2 See Note 2 i i* 'MODEL hW JER: RELATIVE i D 2400 X MDITY 100% 5 See Note 2

!" (%) . __

~EUNCTION: QE11 CAL

l. 11 3 B03" "'

Position Indicated SPRAY pH 9.0 - 9.5 3 See Note 2 ACCURACY: SPEC. NR 7 DDON: NR IMDIATICN 3.6 x 10 RADS 4 See Note 2 i

SEINICE: C rDIT ' Purge Unit 1&2 AGD:G See Note 2 ,

10 CATION: Containment

.11L0011, VEL ELEV: e u 6*- gg3_

i- NOT REOUIRED NONE

.EDGI2L'E j ADOVE FLOOD LEVEL: YES l ODOCUME:frATION ' REFERE::CFS: IN*

1)- Engineering Evaluation 1) Limit switches for valves: CV-31313

2) FSAR Chap . 5 Fig. 5.2-7 CV-31317

3) ' FSAR Chap. 6. Sec. 6.4. 3 ' CV-31570  ;

'4)' FSAR Chap 7. page 7.5-12 CV-31575

-. 5). FSAR 5. Table 5.4-4 2) Not environmentally qualified.

Will replace next outage. 1 Req. #'s: G655318 & G680001. Will install  :

, Conax fittings to hemetically seal switches t during next outages.

.__ __ . - -