ML20153F629

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Safety Evaluation Concurring W/Applicant 860703 Exemption Request Re Testing of 16 Relief Valves,Per 10CFR50,App J
ML20153F629
Person / Time
Site: Nine Mile Point, 05000000
Issue date: 08/27/1986
From:
Office of Nuclear Reactor Regulation
To:
Shared Package
ML20150F672 List:
References
FOIA-88-356 NUDOCS 8809070378
Download: ML20153F629 (9)
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  • Dq UNITED STATES

'.W f, g NUCLEAR REGULATORY COMMISSION

% l WASHINGTON, D. C. 20555

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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO APPENDIX J TO 10 CFR 50 TESTING NINE MILE POINT UNIT 2

, DOCKET NO. 50-410 l

INTRODUCTION 1

By letter dated July 3,1986, the applicant withdrew a request for exemption l from Section !!! C of Appendix J to 10 CFR 50 for 16 relief valves. The exemption request was to eliminate the need to locally leak rate test these vdives per the requirements identified under the type C test program. The withdrawal was based on several factors. Three of the valves were determined to be capable of reverse flow testing. As a result, these valves will be type C air tested in accordance with Appendix J. The remaining 13 valves will have their discharge lines modified, prior to fuel load, so that they do not represent a conta'nment atmospheric leak path, Specifically, the vacuum breakers will be seal welded closed. This modification eliminates the pathway

  • to the containment atmosphere since the discharge pipes end within the suppression pool and below the minimum post-l.oca drawdown water level.

EVALUATION The staff has reviewed the requested exemption withdrawal for 16 relief valves from Section !!! C of Appendix J to 10 CFR 50. The applicant has reevaluated the potential of reverse testing. The results have enabled ;om to include that for three valves, the reverse test is as conservative as a forward test.

Therefore, these three valve will be tested in the reverse direction, which is in' compliance with the requirements of Appendix J.

The remaining 13 valves with their associated piping will be modified, prior to fuel load, to eliminate them as potential containment atmosphere leak pathways. This will be accomplished by seal welding closed the discharge line vacuum breakers. The weld will be continuous and leak checked to assure a leak tight barrier. In addition, discussions with the applicant have indicated the elimination of the vacuum breaker function will not cause steam condens'ation loads to exceed design. Af ter these modifications have been made, the 13 relief valve can be assumed to qualify for hydrostatic rather than pneumatic testing. As a result, Appendix J requirements are not applicable. i Therefore, an exemption from the Type C testing requirements is not required.

l CONCLUSION The staff concurs with the approach taken by the applicant to withdraw the exemption request for 16 relief valves. For three valves, the reverse dirQqdQG Mih RM thMQ Vahts ain q99S199 (QPSlitnte HRh Appendh 4 nwineenu, henfon no empion u needto, foe 30 neening D MHet valves, the corm 11tted to modificat';as would make Appendix J requirements inapplicable. Therefore, the exemption request is not necessary, 8809070370 000010 PDR FOIA L KUDLICKBO-356 PDR . l

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, TABLE 3.6.3-1 (Continued)

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M PRIMARY CONTAINMENT ISOLATION MtVES 2i ISOLATION VALVE ISOLATION MAXIMUM CLOSING S

z VALVE NO. VALVE FUNCTION GROUP SIGNAL (a) TIME (SECONDS)

) D. Other '

$ Safety Relief 2Ril5*RV20 2RilS*RV61 ,

[A,t(s).(d)

,C(o).(d)

Ril5Ril5 RvRv disch.

disch. to SP to SP Outside Outside IVsIVs 2RilS*RV108(el (d)< Ril5 Rv disch. to SP Outside IVs 2Ril5*RV110(o). (4):e SDC to RilR Pump suction Rv 2RilS*RV139(o) (d) s RHR lidr. Flush to Radwaste RV ~

2RilS*RV152(r) (c) SDC Supply from RCS RV Inside IV 2RilS*RV56 A B(d) RHS fiX shell side RVs ,

y 2RHS*5V34 A,B(d) Riis HX steam supply Safety valves -

Ril5 HX steam supply Safety valves 2 2RilS*5V62 A B(d) 2RilS*RVV35 A,B(d) RHS Vacuum Breakers S 2CSL*RV105(o). (d) < CSL RV Disch. to SP Outside IV 2CSL*RV123(o) (4) CSL RV Disch. to SP Gutside IV 2RilS*RVV36 A,B(d) RilS Vacuum Breakers 2CCP*RV170(o).(n) CCP RV Discharge Inside IV q ex --a 2CCP*RV171(e) (n) CCP RV Discharge Inside IV Z

2C51t* RVll3(cl (d) C511 RV Disch. to SP Outside IV '

y 2C51L*RV114(o). (d) C5il RV Disch. to SP Outside IV D

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TABLE 3.6.3-1 (Continued) h m

@ lMARY CONTAINMENT ISOLATION VALVES 1

? ISOLATI05 VALVE ISOLATION MAXIMUM CLOSING

[ VALVE NO. VALVE FUNCTIOfDN GROUP' SIGNAL (a) TIME (SECONOS) o

$ Check Valves ,

  • 2RHS*A0 VIE A,B,C(h) RHS/LPCI to RP4@V Inside IVs g 2RHS*A0V39 A,B(h) l SDC to RCS Inghlde IVs

" 2 CPS *V5s Nitrogen SupPjMy to 2 CPS *A0VIO7 Inside IV 2 CPS *V51 Mitrogen SupP),My to 2 CPS *A0VIO9 Inside IV 2C5H*A0W108(h) CSH to RPV Ingkide IV 2CSL*A0W181(h) CSL to RPV Inikide IV 21CS*A0V156(h) ICS to RPV OutJt' side IV

} 2ICS*A0V157(h) ICS to RPV In% hide IV I 2SLS*Vis SLS to RPV Ingkide IV U '

2GSN"V17e N2 Purge to Tif1p Index Mech. Inside IV 2!AS*V443 IAS to ADS AcfMunulators Inside IV 2IAS*V4c3 IAS to ADS AcfMtsoulators Inside IV 2RCS*V59 A B RDS to RCS Punikp A Seal Outside IVs 2RCS*f68 A,B RDS to RC5 Pu%p A Seal Inside.IVs q 2RCS*V98 A,8 RDS to RCS Pu%p A Seal Outside IVs  %

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2RHS*VIS(d)(f) Discharge ChefAk from RCIC to Supp. Pool b 2RHS*V29(d)(f) Discharge ChefAk from RCIC to Supp. Poo'. y 2RHS*V117(d)(f) Check Valve f9Yom RCIC Drain to Supp. Pool 2RHS*V118(d)(f) Check Valve f4Yom RCIC Drain to Supp. Pool g 2FWS*A0v23 A,B(h) feedwater toffkPV Outside IV's U

2FWS*VI2 A,B Feedwater toflRPV Inside IV's h -

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. TABLE 3.6.3-1 (Continued) k PRIMARY CONTAINND.'T ISOLATION VALVES 5

ISOLATION VALVE ISOLATION MAXIMUM Ct.051NG S VALVE NO. VALVE FUNCTION GROUP SIGNAL (a) TIME.(SECONDS)

"i

, Excess Flow Check (e) c Reactoi Instrumenta g

-e tion Lines

  • 215C"EFV1 Inst. Line from MSS 215C*EFV2 Inst. Line from N14,200* .

215C*EFV3 Inst. Line from N14,160*

,- 215C*EFV4 Inst. Line from M13,190*

. 2ISC"EFV5 Inst. Line from N14,20' R 2ISC*EFV6 Inst. Line from N14,340*

  • - 2ISC*EFV7 Inst. Line from N13,10' T 2ISC"EFV8 Inst. Line from M12,160*

l

g 2ISC*EFV?D Inst. Line from N12.200*

2ISC*EFV11 To 2ISC*FT47X,FT488 215C*EFV13 To 215C*FT47H I 215C*EFV14- Vessel Bottom tap loop A Jet Pump l Inst. Line from M12,340' 215C*EFV15 l 2ISC*EFV17 Inst. Line from N12.20' .

215C*EFV18 To 2ISC*FT47J.FT48A 2ISC*EFV20 To 2ISC*FT47E 215C"EFV21 Vessel Bottom tap for C5il, RDS ""T"I 215C"EFV22 Vessel Botton Tap for WC5 and Loop 8 J.P.

2ISC*EFV23 To 2ISC*FT48C and Postaccident Sampling =

2ISC*EFV24 To 2ISC"FT480 and Postaccident Sampling l &

a 215C*EFV25 To 2ISC*FT47L l* 21st*EFV26 To 215C*FT47C 2ISC"EFV27 To 2ISC*FT47A C 2ISC*EFV28 To 2ISC*FT47R

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-g 2ISC*EFV29 2ISC"EFV30 Io 2ISC*FI47G To 215C*F147N l ' " 215C*EFV31 To 215C*FT4BA i

  • 2iSC*EFV32 To 2ISC*FT47T lg 215C"EFv33 To 215C"FT47V FI48C ,

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. TABLE 3.6.3-1 (Continued) 3

$ PRIMARY CONTAl MENT ISOLATION VALVES 5

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, ISOLATION VALVE ISOLATION MAXIMUM CLO51HG o VALVE NO. VALVE FUNCTION GROUP SIGNAL (a) TIME- (SECONDS)

Y 2ISC"EFV34 To 2ISC*FT47B c 215C*EFV35 To 215t*FT47D E

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215C*EFV36 l 10 2ISC"FT47F 2tSC"EFV37 To 215C"FT475 .

~ 2ISC*EFV38 To.215C*FT47M 2ISC"EFV39 To 2ISC*FT47P 215C*EFV40 To 215C"FT488 215C*EFV41 To 215C"FI47U 215C*EFV42 To 2ISC"FT4N,FT48D 2tSC*EFV9 Containment Pressure 2ISC*PT15C, 168, 16D u

s 2ISC*EFV12 Containment Pressure 2ISC'PT158,178,17D

  • 215C*EFV16 Containment Pressure 2ISC*PT15A,16A,16C T 215C*EFV19 Containment Pressure 2ISC"Pil50,17A,17C w

2CM5"EFVIA To CMS *PTIA 2 CMS *EFV1B To CMS *PTIS ~

2 CMS *EFV3A To CMS *P12A 2 CMS'EFV38 To CMS *PT2B 2 CMS'EFVSA To CMS *PT7A 2 CMS *EFVS8 To CMS *PT78 2 CMS *EFV6 To CMS-Pil68 2 CMS *EFV8A To CMS *Li9A, llA, 114 *"E"Ig 2CM5"EFV88 To CMS *LT98, 118, 105 ,

2 CMS *EFV9A To CM5"LT9A, IIA, 114 2CM5"EFV98 2 CMS *EFV10 To CMS *LI98, 118, 105 Io CMS-PI173

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2IC5"EFV1 To 2IC5"PD7167 C 21C5'EFV2 To 21CS*PDil67 - =g g 20ER"EFV31 To DER *PIl34 m

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4 , ;, y g .g ,. 94

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TABLE 3.6.3-1 (Continued)

PRIMARY CONTAIMENT ISOLATION VALVES .

3 r-

[ ISOLATION VALVE ISOLATION MAXIMUM CLOSING g VALVE NO. VALVE FUNCTION GROUP SIGNAL (a) TIME- (SECONOS) 5

, 2ICS*EFV3 To 21CS*PDT168 '

c 2ICS*EFV4 g To 2ICS*PDT168 x

% 2IAS*EFY200 To 2IAS*PT230 off ADS Acc m.

m 2IAS*EFV201 To 2IAS*PT231 off ADS Accum. ~

2IAS*EFV202 To 2IAS*PT232 of f ADS Accum.

2IAS*EFV203 To 2IAS*PT233 off ADS Accum.

2IAS*EFV204 To 2IAS*PT234 off ADS Accum. .

2fAS*EFV205 To 2IAS*PT235 off ADS Accum. .

2IAS*EFV206 To 2IAS*PT236 off ADS Accum.

5 2RHS*EFV 5. 6 To 2RHS*PDT188 -

2R11S*EFV7 To 2RHS*PDT18A 7

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2 MSS *EFV 1A,B,C,0 To Flow elements A,B,C D steamlines 2MS$*EFV 2A,B.C.D To Flow elements A B.C.D steamlines 2 MSS *EFV 3A,8,C,0 To Flow elements A.B.C,0 steamlines '

2i IS*EFV 4A,B C.D To flow elements A B.C,0 steamlines 2RCS*EFV44 A,8 To 2RCS*PT 84 A/B 2RCS*EFV45 A,8 To .tCS*FT 7 A/8, FT 9 A/B -

2RCS*EFV46 A,8 2RCS*EFV4/ A,8 To J.;CS*FT 7 A/B, FT 9 A/8 To ;CS*FT 6 A/B, FT 8 A/B T'3 ,-

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2RCS*EFV48 A,B To 1RCS*FT 6 A/8, FI 8 A/B 2RCS*EFV52 A,8 To 2RCS*PDT 15 A/8 D 2RCS*EFV53 A,B To 2RCS*PDT 15 A/B &

2RCS*EFV62 A,0 To 2RCS*PI44 A/B 2RCS*EFV63 A.E To 2RCS"PT42 A/B -

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21 a .

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. TABLE 3.6.3-1 (Continued) -

h PRIMARY CONTAINENT ISOLATION VALVES 1

! e-

'" VALVE ISOLATION MAXIMUM CLOSING IS0ggjon GROUP SIGNAt(a) TINE.(SECONDS)

$ VAD( W. VALVE FUNCTION

-x

" To 2WCS-FT 134

  • 2WC$affW221 - -

2WCS'gfV222 To 2WCS*FI67X, PDS 115 -

E 2WC98gfW223 I To 2WCS*FT67Y G 2WC$affv224 To 2WCS*FT67Y m 2WC$agfv300 To 2WCS*FT67X, PDS 115 2Cgyagfv1 To 2C5H*LT123, LT124 2Cgyagfy2 To 2CSM*LT123. LT124 .

2Cgyagfy3 A *PDI109 To 2C*

m ggfyl To 2CSL*PDi132 and 2RHS*PDil8A 2

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TABLE 3.6.3-1 (Continued) ,.

PRIMARY CONTAINMENT ISOLATION VALVES

, TABLE NOTATION

(a) See Specification 3.3.2, Table 3.3.2-4, for valve groups operated by isolation signal (s).

(b) Deleted, l (c) These valves are the RHR heat exchangers vent lines isolation valves. The vent line connects to the RHR safety relief valves (SRVs) Discharge Header before it penetrates the primary containment. The position indicators for thesevalvesareprovidedintheCnntrol(Roomforremotemanualisolation.

(d) Type C leakage tests not required.

(e) The associated instrument lines shall not be isolated during Type A test- '

ing. Type C testing is not required These valves shall be tested in accordance with Surveillance Requitseent 4.6.3.4.

(f) These valves are check valves, located on the vacuum breaker lines for RHR SRVs discharge headers. The SRV discharge header terminates under pool water and therefore has no containment isolation yalv;s other than those on lines feeding into it.

(g) 2SLS*HOVSA and B are globe stop check valves. These valves close upon reverse flow. The motor operator is provided to remote manually close the ,

valve from the control room. '

l (h) These valves are tdstable check valves. They close upon reverse flow.

The air operator on each valve is provided only for periodic testing of the valve. These valves can only be tested against a zero d/p.

(i) Valves are. maintained close'd and the lines are capped. Valves are Type C tested.

(j) Not primary containment penetration isolation valves. These valves close on an isolation signal to provide integrity of "A" and "B" LPCI loops. l

. 1 (k) Valves close on a SCRAM signal; not part of primary containment isolation system but are included here for Type C testing per Specification 3.6.1.2.

These valves are not required to be OPERABLE per this specification but are required to be OPERABLE per Specification 3.1.3.1.

(1) Not subject to Type A or Type C leak test because of constant monitoring under constant-1800 psig pressure and the possible detrimental effects of shutdown. ,

(m) N'ot subject to Type C test per 10 C'FR 50, Appendix J. A hydr'ostatic test

. is performed in accordance with Specification 4.6.1.2.d.3.

(n) These valves are Type C tested in the reverse direction.

H!NE HILE POINT - UNIT 2 3/4 6-34 JUN25 x

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2"- SALP INPUT FROM THE PLANT SYSTEM BRANCH FOR NINE MILE POINT UNIT 2 PROPOSED b,. TECHNICAL SPECIFICATION CHANGES K'

A. Licensing Activities
f. 1. Management Involvement in Assuring Quality 4 During the review process the licensee's activities exhibited little evidence of prier planning.

Rating: 3

2. Approach to Resolution of Technical Issues from a Safety Standpoint.

During.the review some issues were not resolved in a timely ma'nner I

i Rating: 3

3. Responsiv'e to NRC Initiatives Rating: N/A
4. Staffing (includingManagement)

Rating: N/A

5. Reporting and Analysis of Reportable Events, Rating: N/A

, 6. Training and Qualification Effectiveness. ,

Rating: N/A ,

l

7. Overall r'ating for Licensing Activity Functical Area-1 Rating: 3 O

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