ML19347F402
| ML19347F402 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 05/15/1981 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-3.D.1.1, TASK-TM NUDOCS 8105190192 | |
| Download: ML19347F402 (12) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699 l
1881 1981 PHILADELPHIA. PA.19101 (215) 841 5cct smetos t. oatino,,
ELa Ta j ose May 15, 1981 Doc ket Mcs. 50-277 50-278 f.E
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g "gg),..c[o,j, Mr. John F.
Stel::, Chief
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Cperating Reacters Eranch nu
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US Nuclear Regulatory Ccamission Washington, DC 20555 X N'
Dear Mr. Stolz:
I n Mr. R. W. Reid's letter o f January 22, 1981, we were asked to provide additional information concerning cur August 12, 1976, request for certain exemptions from the requirements of 10 CFR 50, Appendix J, Co nt ai nme nt Leakage Testing.
In cur letter cf Februar y 25, 1981, we indicated that we vould have tc review all information in cur criginal submittal in order to adequately respond to your request.
The attached table represents the results of cur complete review of the containment isclation valves at Peach Ecttom and updates the information provided in our 1976 Application for Amendment of the Peach Bcttom Cperating License.
Included in this table are these v alves for which reverse direction testing is required and cur basis for exclusion from Type C testing as requested in item 2.1 of Mr. Reid's letter.
Item 2.2 cf Mr. Reid's letter concerned cur request for an exemption frcm Type C testing cf Reactor Building Closed Ccoling Water (RBCCW) system and Drywell Chilled Water (DCW) system valves.
This request has been deleted.
Although permanent test provisions have not yet been made, these valves were tested d ur ing the 1=st Unit 2 refueling cutage and will be similarly
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Mr. John F. Stolz Page 2 tested on Unit 3 during the current refueling outage.
We
- anticipate that-permanent test connections will be completed on the RBCCW cystem and DCW' system valves prior to the next refueling outage on each unit.
If you' hate any questions or require additional' information, please don't hesitate to contact-us.
Very truly yours,
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Att a chme n t e
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9 a-Peach Bottom Atomic Power Station Units 2 and 3 Containment Isolation and Leak Rate Testing Pene.
Isciation Exemptions No.
Valves Notes Requested N-7A A0-2-80 A to D 1,2,3,4,5 to D A0-2-86 A to D 1,2,3,4,5 N-8 MD-2-74 1,2,4,5,9,11 MO-2-77 1, 2, 4, 5 N-9A MO-23-19 1, 2, 4, 5 MO-6-38A 1, 2, 4, 5 Ck. Viv. 2-96A 1, 2, 4, 5 Ck. Viv. 2-28A 1, 2, 4, 5,
N-98 M0-13-21 1, 2, 4, 5 MD-12-68 1, 2, 4, 5 M0-6-388 1, 2, 4, 5 Ck. Viv. 2-968 1, 2, 4, 5 Ck. Viv. 2-288 1, 2, 4, 5 N-10 MD-13-15 1, 2, 4. 5, 9, 11 MD-13-16 1,2,4,5 t
N-11 M0-23-15 1, 2, 4, 5, 9, 11 MD-23-16 1, 2, 4, 5 N-12 HD-10-18 1, 2, 4, 5, 9, 11 MD-10-17 1, 2, 4, 5 N-13A MD-10-25B 1, 2, 4, 5 AD-10-468 1, 2, 4, 5 A0-10-163B 1, 2, 4, 5 N-138 MD-10-25A 1, 2, 4, 5 A0-10-46A 1, 2, 4, S A0-10-163A 1, 2, 4, 5 t
w I'olation Exemptions Pene.
s No.
Valves Notes Requested N-14 HD-12-15 1, 2, 4, 5, 9, II Ho-12-18 1, 2, 4, 5 N-16A A0-14-128 1, 2, 4, 5 A0-14-138 1, 2, 4, 5 A0-14-153 1, 2, 4, 5 N-16B AD-14-12A 1, 2, 4, 5
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A0-14-13A 1, 2, 4, 5 A0-14-15A 1, 2, 4, 5 N-l?
MD-10-32 1,2,4,5,9,11 MD-10-33 1, 2, 4, 5 N-18 A0-20-82 1, 2, 4, 5, 9, 12 A0-20-83 1, 2, 4, 5 N-19 A0-20-94 1, 2, 4, 5, 9, 12 A0-20-95 1, 2, 4, 5 h-21 Two globe valves on 1, 2, 4, 5, 9, 12 Service Air System 1, 2, 4, 5 N-22 A0-2969A (3969A)
I, 2, 4, 5 Check Valve 1, 2, 4, 5 N-23 MD-2373 (3373)
I, 2, 4, 5 N-24 M0-2374 (3374)
I, 2, 4, 5 N-25 A0-2505 (3505) 1, 2, 4, 5
& 2058 AD-2519 (3519) 1, 2, 4, 5 AD-2520 (3520)
I, 2, 4, 5, 9, 13 A0-2521A (3521A)
I, 2, 4, 5 AD-2521B (35218)
I, 2, 4, 5, 9, 13 AC-2523 (3523)
I, 2, 4, 5 A0-2502A (3502A) 1, 2, 4, 5, 9 Ck. Viv. 9-16A 1, 2, 4, 5 1 o Check Valves 1, 2, 4, 5 1 <
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Isolation Exemptions No.
Valves dotes Requested N-26 A0-2509 (3509) 1, 2, 4, 5, 9, 12 A0-25to (3510) 1, 2, 4, 5 A0-2506 (3506) 1, 2, 4, 5, 9, 13 I
A0-2507 (3507) 1, 2, 4, 5 A0-4235 (5235) 1, 2, 4, 5 SV-2671G (3671G) 1, 2, 4, 5 SV-2978G (3978G) 1, 2, 4, 5 SV-49608 (59608) 1, 2, 4, 5 SV-49618 (59618) 1, 2, 4, 5 SV-49668 (59668) 1, 2, 4, 5 N-32C, O ILRT System Two Globe 1, 2, 4, 5, 14 C
Valves H-35A TIP Ball Valve B
to E TIP Shear Valve B
B I
N-35F SV-7-Il3 Check Valve B
4 N-36 Ck. Viv. 3-110 1, 2, 4, 5 Ck. Viv. 3-113 N-37A CRD Insert to D HCU E
N-38A CRD Withdrawal to D HCU E
CV-3-32A, B 1, 2, 4, 5 CV-3-33 1, 2, 4, 5
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N-39A HD-10-318 1, 2, 4, 5, 9, 11 Ho-10-26B 1, 2, 4, 5 SV-49498 (59498) 1, 2, 4, 5 Check Valve 1, 2, 4, 5 l
, N-398 HO-10-31A 1,2,4,5,9,11 MD-10-26A 1, 2, 4, 5 SV-4949A (5949A) 1, 2, 4, 5 d
Check Valve 1, 2, 4, 5 I " ' * '
C
Pene.
Isolation Exemptions No.
Valves Notes Requested N-41 A0-2-39 1, 2, 4, 5, 9, 12 A0-2-40 1, 2, 4, 5 N-42 ck. Viv.11-16 1, 2, 4, 5 XV-14A, 8 1, 2, 4, 5 N-51A SV-2671E (3671E) 1, 2, 4, 5 SV-2978E (3978E)
I, 2, 4, 5 N-SIB SV-26710 (36710) 1, 2, 4, 5 SV-26780 (36780) 1, 2, 4, 5 N-Sic SV-2671c (3671C) 1, 2, 4, 5 SV-2978C (3S78c) 1, 2, 4, 5 SV-4960c (5960c) 1, 2, 4, 5 SV-4961c (5961c) 1, 2, 4, 5 sv-4966c (5966C) 1, 2, 4, 5 N-SID SV-2980 (3980)
I, 2, 4, 5 check Valve 1, 2, 4, 5 N-52F A0-29698 (39698) 1, 2, 4, 5 Check Valve 1, 2, 4, 5 N-53 MO-22018 (32018) 1, 2, 4, 5 N-54 Ho-22006 (3200B) 1, 2, 4, 5 N-55 MO-2200A (3200A) 1, 2, 4, 5 N-56 MO-2201A (3201A) 1, 2, 4, 5 N-57 A0-2-316 1, 2, 4, 5, 9, 12 A0-2-317 1, 2, 4, 5 N-203 SV-26718 (36718) 1, 2, 4, 5 SV-2978B (39788)
I, 2, 4, f SV-49600 (59600) 1, 2, 4, 5 SV-49610 (59610) 1, 2, 4, 5 SV-49660 (59660) 1, ?, 4, 5 g
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Isolation Exemptions No.
Valves Notes Requested N-205A A0-2502B (35028) 1, 2, 4, 5, 9, 13 Ck. Viv. 9-26B 1, 2, 4, 5 N-210A HD-10-34B 1, 2, 4, 5, 9, 12 Ck. Viv.10-198, D D
N-2108 MD-10-34A 1, 2, 4, 5, 9, 12 Ck. Vi v.10-19A, C D
N-211A HD-10-388 1, 2, 4, 5, 9, 12 HO-10-398 1, 2, 4, 5 MD-10-34B 1, 2, 4, 5 SV-4951B (59518)
I, 2, 4, 5 Check Valve 1, 2, 4, 5 N-2118 HD-10-38A 1, 2, 4, 5, 9, 12 MD-10-39A 1, 2, 4, 5 HO-10-34A 1, 2, 4, 5 SV-4951A (5951A) 1, 2, 4, 5 Check Valve 1, 2, 4, 5 N-212 Ck. Vlv.13-9 1, 2, 4, 5, 9, 15 D
214, 217B Ck. Viv. 13-50 1, 2, 4, 5 AG-4240 (5240) 1, 2, 4, 5, 9, 12 F
A0-4241 (5241) 1, 2, 4, 5 Ck. Viv. 23-12 1, 2, 4, 5, 9, 15 D
Ck. Viv. 23-65 1, 2, 4, 5 A9-4247 (5247) 1, 2, 4, 5, 9, 12 r
AD-4248 (5248) 1, 2, 4, 5 MD-4244 (5244) 1, 2, 4, 5, 16 ND-4244A (5244A) 1, 2, 4, 5, 16 N-216 Ck. Viv. 23-62 D
N-218A A0-2968 (3968) 1, 2, 4, 5 Ck. Viv.
1, 2, 4, 5 1
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9 Pene.
Isolation Exemptions No.
Valves Notes Requested N-2186 SV-267]A (3671A) 1, 2, 4, 5 SV-2978A (3978A)
), 2, 4, 5 N-218C ILRT System - Two 1, 2, 4, 5, 14 C
Globe Valves N-219 AD-2511 (3511)
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- 2. 4, 5, 9, 13 A0-2512 (3512)
I, 2, 4, 5 A0-2513 (3513) 1, 2, 4, 5, 9, 12 AD-2514 (3514)
I, 2, 4, 5 SV-2671F (3671F) 1, 2, 4, 5 SV-2978F (3978F) 1, 2, 4, 5 SV-4960A (5960A) 1, 2, 4, 5 SV-4961A (5961A)
I, 2, 4, 5 SV-4966A (5966A)
I, 2, 4, 5 N-221 Ok. Viv. 13-10 1, 2, 4, 5, 9, 15 D
Ck. Vlv. 13-38 1, 2, 4, 5 N-223 Ck. Viv. 23-13 1, 2, 4, 5, 9, 15 D
Ck. Viv. 23-56 1, 2, 4, 5 N-224 MD-14-26A D
Ck. Viv.14-66A, C D
0 3 Ck. Vivs.
N-225 MD-13-41 1,2,4,5,9 F, A MD-14-70 1,2,4,5,9 F, A M0-14-71 1, 2, 4, 5 MD-13-39 1, 2, 4. 5 D
N-226 MD-10-13A to D A to D RV-10-72A to D D
N-227 MD-23-58 1,2,4,5,9 F,A MD-23-57 1, 2, 4, 5 i
N-228 MD-14-7A to D 0
A to D l
N-229 Ck. Viv.14-668, D D
l 2 Ck. Vivs.
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4 Pene.
Isolation Exemptions No.
Valves Notes Requested D
N-230 Ck. Viv. 13-29 D
N-233 MO-23 Unit 2 N-234 MD-14-268
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D "It 3 0
2 Ck. Vivs. )
N-234A MD-14-26B
)
D "I
3 3 Ck. Vlvs, )
0 D
N-2348 MO-14-26A
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2 Ck. V1vs. ) Unit 3 D
D N-23b MO-23 Unit 3 D
N-236A Ck. Viv.14-668, D Unit 3 1
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NOTES 1.
Minimum test duration for all valves and penetrations, listed is one hour.
2.
Test pressures shall be at least 49.1 psig for all valves and penetrations except MSIV's which are tested at 25 psig.
3 MSIV's acceptable leakage rate is 11.5 scfh/ valve.
4.
The total acceptable leakage for all valves and penetrations 1
is 0.60 la.
5.
Local leak tests on all testable isolation valves shall be performed at intervals no greater than 2 years.
l 6.
Local leak tests on all testable penetrations shall be performed at intervals no greater than 2 years.
7.
Air locks shall be tested at 6-month intervals except if air locks are not opened during this interval, in which case tests shall be perfo. med after each opening but no interval may be longer than one year.
8.
The personnel air locks are tested at 491 psig.
9.
Identifies isolation valves that are tested b/ applying pressure betweer the inboard and outboard valves.
10.
Deleted.
- 11. Gate valve tested in reverse direction. Test acceptable since the normal force between the seat and the disc generated by stem action alone is greater than ten (10) times the normal force induced by test differential pressure. This applied to the following valves:
MO-13-15 MO-10-31A, 8 MO-12-15 M0-23-15 MO-23-31 Mo-10.-32 MO-10-18 This position has been reviewed and found acceptable during NRC audits of the Peach Bottom LLRT program.
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- 12. Globe valve tested in reverse direction. Test acceptable since test pressurc is applied under the valve seat. This applied to the following valves:
A0-4240 (5240)
A9-20-94 A0-4247 (5247)
A0-2509 (3509)
MO-10-38A and 8 A0-2-39 Mo-10-34A and B A0-2-316 A0-20-82 A0-2513 (3513)
Inner manual valve on penetration N-21.
- 13. Butterfly valve tested in reverse direction. Test acceptable since valve is equipped with inflatable seals which provide equivalent bidirectional sealing. This applies to the following valves:
A0-2520 (3520)
A0-2506 (3506)
A0-2511 (3511)
AD-25218 (35218)
A0-2502A cnd B (3502 A and B)
- 14. Manual globe valves tested in reverse direction. This applies to valves on the following penetrations:
N-32C (two valves)
N-218C (two valves)
N-320 (two valves) 15 stop-check valves reverse direction tested tr. closed position.
0-rings are al so tested. Valve " check" action is not tested.
This apolies to the following valves:
Ck. V1v.
13-9 Ck. Viv.
23-12 Ck. Viv.
23-13 Ck. Viv.
13-10
- 16. 6 ate valve utilized for containnent isolation in both directions.
Test performed only in one direction.
Valve nornal force ratio is 17.9 Leakage path is between separate torus penetrations only.
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b1 EXEMPTIONS l
A.
An exemption is requesced to allow reverse direction testing of these gate valves. Block valves and test connections necessary for
" forward" testing do not exist. Although these valves do not.
meet the " factor of ten" criteria described in note 11, substantial.
margin does exist as indicated below Valve Normal Force Ratio MD-14-70 4.0 Mo-23-58 1.2 M0-13-41 2.6 These valves will remain water covered following all accidents.
Leakage in the proper direction through all valves is included in the Type A test results. Leakage through MO-23-58 would be into a closed system designed to handle contaminated fluids following an accident per NUREG-0737, Item III.D.1.i.
B.
An exemption from Type C testing per Appendix J is requested.for certain valves on the Traversing In-Core Probe (T.I.P.) System.
The T.I.P. ball valves (penetrations 35A thru 35E) and the check valve on the Nitrogen supply to the T.I.P. system (penetration 35F) are not capable of being tested because of plant design. The possible leakage paths which include these valves are tested during the Type A integrated leakage rate tests. Additionally, these i
valves and their associated piping are of snali diameter: ball valves i
3/8 inch tubing and Nitrogen to T.I.P. check valve 1 inch.
C.
An exemption is requested to allow reverse direction testing of the manual globe valves on the following penetrations:
i N-32C H-320 N-218C These valves are locked closed except during ILRTs.
D.
An exemption is requested from Type C testing since these valves will remain water covered following a LOCA and since suitable boundary valves and test connections do not exist.
In addition, leakage through these valves will be into " closed systems" outside of containment which are designed and maintained to handle highly contaminated fluids following an accident per NUREG-0737, Item III.D.I.l.
Leakage through these valves is included in the Type A test results.
E.
An exemption is requested fran Type C testing of the individual valves in'the CRD hydraulic control units. Leakage is tested during Type A and reactor vessel hydrostatic testing.
F.
An exemption is no longer requested to allow water testing of these valves. Valves are tested with air and the results are adjusted to account for any water legs that may exist outside of the test boundary.
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