ML20009C918

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Proposed Tech Specs 3/4.7.8 Re Inservice Surveillance of Snubbers & Tables 3.7-1a & 3.7-1b
ML20009C918
Person / Time
Site: Millstone Dominion icon.png
Issue date: 07/16/1981
From:
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20009C916 List:
References
TAC-08952, TAC-08969, TAC-8952, TAC-8969, NUDOCS 8107220140
Download: ML20009C918 (21)
v • d • e


Text

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o Docket No. 50-336 Attachment 1 Millstone Nuclear Power Station, Unit No. 2 Proposed Technical Specifications l

l l

r July, 1981 8107220140 810715 PDR ADOCK 05000336 '

P PDR

.4r ,

PLANT SYSTEMS 3/4.7.8 SNUBBERS LIMITING CONDITION FOR OPERATION 3.7.8.1 All snubbers listed in Tables 3.7-la and 3.7-lb shall be OPERABLE.

APPLICABILITY As shown in Tables 3.7-la and 3.7-lb.

ACTION As shown in Tables 3.7-la and 3.7-lb.

SURVEILLANCE REQUIREMENTS 4.7.8.1 Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program and the requirements of Specification 4.0.5.

(a) Visual Inspection Visual inspections shall be performed in accordance with the inspection schedule listed in Table 4.7-3.

(b) Visual Inspection Acceptance Criteria Visual inspections shall be conducted in the following manner:

(1) in the case where there are visual indications of damage or impaired OPERABILITY, the affected snubber shall be tested in the as-found condition and determined OPERABLE per (2) if the specifications 4.7.8.ld or 4.7.8.le as applicable; or attachments to the foundation or supporting structure are found to be insecure, the cause of the rejection dudl be clearly established f and remedied for that particular snubber and for other snubbers that may be generically susceptible. Snubbers which appeared (

inoperable as a result of visual inspections may be determined OPERABLE for the purpose of establishing the next visual inspection interval provided that the above procedure is adhered to.

All snubbers cor.nected to an inoperable common hydraulic fluid reservoir shall be counted as inoperable snubbers.

MILLSTONE UNIT NO. 2 3/4 7-21

- __-_______-______ ___ __________ _ _ _ _ ___ ~ 4 C_ -

eg -a,

~

PLANT SYSTEMS 3/4.7.8 SNUBBERS

^\

(c) Snubber Tests At least once per eighteen (18) months during shutdown, a repre-sentative sample (10% of the total of each type of snubber, mechanical and hydraulic, in use in the plant) shall be tested either in place or in a bench test. For each snubber that does not meet the test acceptance criteria of Specification 4.7.8.1d or 4.7.8.le, as applicable, an additional 10% of that type of snubber shall be tested.

Testing shall continue until no additional inoperable snubbers are found within a sample or until all snubbers in Tables 3.7-la and 3.7-lb have been tested. The representative sample selected for testing shall include the various configurations, and the range of size and capacity of snubbers.

Snubbers identified in Tables 3.7-la and 3.7-lb as "Especially Difficult to Remove" or in "High Radiation Zones During Shutdown" may be exaapted frcm testing provided an engineering evaluation is performed to substantiate this exsuption and these cnubbers were danonstrated OPERABLE during previous tests. Tables 3.7-la and 3.7-lb may be used jointly or separately as the basie for the sampling plan.

In addition to the regular sample, in locations where snubbers had failed the previous test due to operational or environmental conditions (excessive vibration, water hammer, high radiation, extreme heat or humidity, etc.), the snubbers currently installed

! in these locations shall be tested during the next test period.

Test results of these snubbers may not be included for the resampling. All replacanent snubbers shall have been tested prior to installation.

( If any snubber selected for testing either fails to lock-up or l fails to move (i.e., frozen in place), the cause will be evaluated l and if caused by manufacturer design deficiency, all snubbers of the same design subject to the same defect shall be tested regardless of location or difficulty of removal. This testing requirement shall be independent of the requirements stated above for snubbers not meeting the test acceptance criteria.

For the snubber (s) found inoperable, an engineering evaluation shall be performed on the components which are supported by the snubber (s).

The purpose of this engineering evaluation shall be to determine if the components supported by the snubber (s)were adversely affected by the inoperability of the snubber (s) in order to ensure that the sup-l ported component remains capable of meeting the designed service, l

MILLSTONE UNIT NO. 2 3/4 7-22 l

l

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PLANT SYSTEMS 3/4.7.8 SNUBBERS

\

(d) Hydraulic Snubbers Functional Test Acceptance Criteria The hydraulic snubber functional test shall verify that:

1. Activation (restraining action) is achieved within the specified range of velocity or acceleration in both tension and compression.
2. Snubber bleed, or release rate, where required, is within the specified range in compression or tension.

(e) Mechanical Snubbers Manual Test Acceptance Criteria The mechanical snubber manual test shall verify that:

1. Freedom of movement over the full range of stroke in both compression and tension is achieved.

MILLSTONE UNIT NO. 2 3/4 7-23

. ~'

TABLE __3.7-la .

SAFETY RELATED HYDRAULIC SNUBBERS

  • h HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE E No. (1) AND ELEVATION INACCESSIBLE ZONE ** TO REMOVE MODES (3) ACTION

~

7 (A or I) (Yes or No) (Yes or No)

E 312015(2) MS-4N/41W/+66 I No Yes 1. 2. 3 1 m 312016 (2) MS-4N/41E/+66 I No Yes 1.2.3 1 312017 MS-4N/41E/+64 I No Yes 1. 2. 3 1 312018 MS-4N/41W/+64 I ,

No Yes 1. 2, 3 1 312019 MS-4N/41E/+63 I No Yes 1. 2. 3 1

{ 401008 HPSI-F.2/18.9/-37 A Yes No 1.2,3.4 1 401024 CS-F.8/17.7/-30 A No No 1, 2. 3. 4 1 y

401025 (2)* HPSI-H.2/17.2/-30 A No No 1. 2. 3. 4 1 401100 HPSI-H.4/17.7/-ll A No Yes 1.2.3.4 1 401107 HPSI-H.4/17.7/-13 A No Yes 1, 2. 3. 4 1 402009 SDC-F.2/18.9/-32 A Yes ,

No 6 3 402013 HPSI-F.3/18.9/-40 A Yes No 1, 2. 3. 4 1 402022 LPSI-F.2/18.1/-31 A Yes 'No 1.2.3(+).6 4 402056(2) LPSI-H.4/17.6/-32 -

A Yes No 1, 2. 3(+) 6 4 402083 CS-H.4/18.4/-20 A No Yes 1,2.3(+) 1 j

402100 SIT-42S/41W/+25 I No No 1,2.3(+) I l

~

  • j ,, -

TABLE 3.7-la (Continued) '

E SAFETY RELATED HYDRAULIC SNUBBERS

  • p .

M HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE E

No.(1), AND ELEVATION INACCESSIBLE ZONE ** TO REMOVE MODES (3) ACTION (A or I)- (Yes or No) (Yes or No) 402113 (2) SDC-185/50W/-2 I Yes No 6 3 m 402115 (2) SDC-185/50W/+3 I Yes No 6 3 403068 SFP-E.5/18.1/-36 A Yes No See Note 4 5 i

i 403070 SFP.L.5/18.9/+10 A Yes No See Note 4 6 403090 SFP-M.0/VS 9/+7 A Yes No See Note 4 6 405388 MS-E.5/19.6/+53 A No No 1, 2, 3 1 3

R.

405618 (2) R8CCW-J.7416.6/-13 A No No 1, 2, 3, 4 1 410004(2)' . HPSI-575/10W/.-13 I No No 1, 2, 3, 4 1 410012 SIT-275/42W/+13 I , ,

Yes No 1,2,3(+) 1 410014 SIT-305/47W/+15 I No No ),2,3(+) 1 410015 SIT-305/47W/+15' I No No 1. 2, 3(+) . , - 1 l 410017 SIT-38S/48W/+1 I No No 1,2,3(+) 1 410019 SIT-32S/47W/+8 I- No No 1,2,3(+) 1 410021 SIT-6N/47W/49 , I No No , 1,2,3(+) 1 4

410022 SIT-9N/62W/+5 I No No 1,2,3(+) I j 410027 SIT-6N/47W/+10 I No ' ,

No 1,2,3(+) 1 410028 SIT-6N/47W/+15 I No Yes 1,2,3(+) 1

2'

.~..

TABLE 3.7-la (Continued) -

E SAFETY RELATED HYDRAULIC SNUBBERS

  • F .

APPLICABL2 U HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY O!FFICULT E No. (1) AND ELEVATION INACCESSIBLE ZONE ** IO REMOVE MODES (3)_ ACTION _

(A or 1) (Yes or No) (Yes or No)

[ ,

E 410029 SIT-6N/47W/+15 I No No 1,2,3(+) I ro 410031 (2) SIT-1N/37W/+1S I Yes No 1,2,3(+) 1 410061 50C-205/28W/-5 I . Yes Yes 6 3

410065 (2) SIT-535/33E/-4 .I No Yes 1,2,3(+) 1 410067 SIT-305/47E/+6 I No .

No 1,2,3f+) 1 i 1,2,3(+)

$ 410083 SIT-305/54E/-1 No No 1 410086(3) SIT-305/47E/+15 I No 1 Yes, 2 No 1,2,3(+) 1 y

I No No 1,2,3(+) 1 k 410103 SIT-11N/61W/+5 411011 (2) FEED-E/22/+47 A No No 1, 2, 3 (2) 2 411023 FEED-E/22/+34 A No No 1,2,3(2) 2 411026 ,, FEED-E.5/22/+31 A No ,

No 1, 2, 3 (2) '2

,411028 FEED-E.5/22/+34 A* No No 1,2,3(2) 2 412002 MS-4N/41W/+63 I No Yes 1, 2, 3 1 412003 MS-M.4/18.9/+55. A No No 1, 2, 3 1 412004 MS-E.5/20/+50 A No No 1, 2, 3 1

)

412 13 FEED-75/50E/+50 I No - ,

No 1, 2, 3 1, 412015 FEED-105/50W/+49 ,

I No .

No 1, 2, 3 1

TABLE _3.7-la(Continued) i E SAFETY RELATED HYDRAULIC SNUBBERS

  • i F M HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE
E No. (1) AND ELEVATION INACCESSIBLE _ ZONE ** TO REMOVE MODES (3) ACTION

] ,

(A or 1) (Yes or No) (Yes or No) , ,

E 412016 (2) MS-M.4/20/+55 A No No 1, 2, 3 1 l 412018 FEED-3S/51W/+45 I No Yes 1, 2, 3 1 413009 MS-F.8/18.9/+55 A No No 1, 2, 3 (2) 2 413011 (2) MS-E.5/18/+40 A No No 1, 2, 3 (2) 2

]

MS-H.4/18.9/+55 A No No 1, 2, 3 - I l 413018 (2)

$ 413019 (2) MS-E.5/17/+40 A No No 1,2,3(2) 2

~

!u I

413022(2) MS-E/16/+41 A No No 1,2,3(2) 2 MS-E.5/17/+40 No 1, 2, 3 (2) 2 j k 413024 (2)* ,

A , No 413025(2) MS-E.5/17/+40 A ' No No 1,2,3(2) 2 413028 MS-K.7/18.9/+55 A , ' No No 1, 2, 3 l l 413029(2) MS-E.5/18.5/+48 A No . No 1,2,3(2) 2

s

, 413030(2) MS-E.5/18.5/+46 A No No 1, 2, 3 (2) 2

! 413031 MS-E.5/18.5/+47 A No No 1.2,.3(2) 2 j

413032(2) MS-E.5/19.6/+56 A No No 1, 2, 3 i l 413041 MS-C/16/+44 A No No . 1,2,3(2) 2 413'046(2) MS-E/16/+41 A No No 1,2,3(2) 2 413081 MS-E.5/19/+46 A No No 1 ,2, 3 1

l -

.~. ..

i TABLE 3.7-la (Continued) i E SAFETY RELATED HYORAULIC SNUBBERS *

f' '
4 HANCER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE 7M E No. AND ELEVATION INACCESSIBLE (A or !)

ZONE **

(Yes or No)

TO REMOVE (Yes or No)

MODES (3)

ACTION

5 413082 (2) MS-E.5/19/+46 A No No 1, 2, 3 1 fN 413162 FEED-E/23/+64 A No No 1, 2, 3 (2) 2 413163 FEED-E.5/23/+64 A No No 1, 2, 3 (2) 2
413172 FEED-E.5/19/+49 A -

No No 1, 2, 3 (2) 2

! 413179 FEED-J.7/18.9/+50 A No No 1, 2, 3 (2) 2 413181 FEED-K.7/18.9/+50 A No No 1, 2, 3 (2) 2

?

i y 413192 (2) FEED-F.2/18.9/+50 A No No 1,2,3(2) 2 m 413199(2)* FEED-L.5/19.8/+50 A ' No No. 1,2,3 . I j 416014 (2) CS-85/61E/+7 I . ' No: No 1,2,3(+)' '1 1

) 416020 CS-235/56E/+10 1 No No 1,2,3(+) 1

}

416023(2) ,,

CS-305/60W/+7 I No No 1,2,3(+)- 1 i 416025 CS'-18S/60W/+8 I No No 1,2,3(+) 1  !

416027 -

CS-55/60W/+5 I .

No . No 1,2,3(+) 1 427075 SW-L.5/17.2/-13 A No No 1, 2, 3, 4 1 427097(2) SW L.5/17.2/-11 A No No .

I', 2, 3, 4 1 42710ii SW-l.5/17.2/-11 A No No 1, 2, 3, 4 1 450071 RBCCW-J.7/17.2/-13 A . No No I, 2, 3, 4 1

? O O - -

(4 'a: G TABLE 3.7-la (Continued) .,*

5 r-SAFETY RELATED HYDRAULIC SNURBERS* ,

!h@ HANGER No. (1)

SYSTEM, LOCATION AND ELEVATION ACCESSIBLE OR INACCESSIBLE HIGrl RADIATION ZONE **

ESPECIAL.LY DIrFICULT 1

TO HEMOVE APktICABLE MODES (3) ACTION

~ . _

(A or I) ~(Yes or Ho) (Yes or No) 501022(2) HPSI-F.8/18.9/-29 A Yes  : Yes 1.2.3.4 1 ro 502032 CS-E.5/19.6/+2 A Yes No 1.2.3(+) I j 504002 HPSI-F.2/18.5/-42 A Yes No 1. 2. 3. 4 1

1. 2. 3. 4 4 504003 HPSI-F.2/17.2/-42 A Yes No I 505166(2) RBCCW-J.7/17.2/-16 A No No 1, 2, 3. 4 1 w 507004 HPSI-F.2/18.5/-42 A Yes No 1. 2. 3, 4 1

^

510017 SIT-6N/47E/+15 I No No

  • 1. 2, 3(+) I i e s 6

a 510018 SIT-6N/T7E/+15 I

  • No No 1.2.3(+) I l 513023 (2) SG-K.6/19.6/-2 A Yes No 1. 2, 3 1

{ 513032 MS-E/19/+48 A No No 1,2.3(21 2 l . 3' I 1. 2. 3 551-558(8) SG #1 Yes Yes . I 551-558(8) SG #2 I Yes Yes 1. 2. 3 1 Table Notation' -

Snubbers may be added to or deleted from safety related systems without prior License Amendment tc

$ w t! kb bh. N N9 $b$$a$ hopo$eb Sevi !on So ^rabSe b -[$ !s kn$l$d$dN t $NeSe$$

License Araendment Request.

c* Modifications to this table due to changes in high radiation areas shall be submitted to the NRC as part of the next License Amendment request.

TABLE 3.7-lb .'. .

SAFETY RELATED_ MECHANICAL SNUBBERS

  • A HANGER SYSTEM, LOCATION ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT APPLICABLE h No. (1) AND ELEVA' TION INACCESSIBLE ZONE ** TO REMOVE MODES (3) ACTION

, (A or I) (Yes or No) (Yes or No)

FW-E.0/23 0/39 A No No 1,2,3(2) 2 h60016

" No No 1,2,3(2) 2 60017 FW-E.0/23 0/39 A 60018 FW-E.0/23 0/39 A No No 1,2,3(2) 2 i

60025 FW-E.0/22.0/40 A No No 1,2,3(2) 2 60026 FW-E 0/20.0/33 A No No 1,2,3(2) 2 60245 RHV- 18N/26E/ 59 I Yes No 1,2,3,4 1 l

Yes No 1,2,3,4 1 j $ 60246 RHV- 21N/ 26E/ 57 I 4 y 60247 RHV- 18N/27E/59 I Yes No 1,2,3,4 1 i

U 60251 RHV- 18S/ 2E/32 I Yes No 1,2,3,4 1 su 60253 RHV- 18S/1W/ 30 I Yes No 1,2,3,4 1 i 302092 HPSI-F.2/18.9/-42 A Yes No 1,2,3,4 1 310022 SI-46S/22E/-3 I No No 1,2,3,4 1 401014 LPSI-E.5/16.8/-35 A Yes No 1,2,3(+),6 4 401016(2) LPSI-E.5/16.8/-36 A Yes No 1,2,3(+),6 4 401018 HPSI-F.3/16.6/-34 A Yes No 1,2,3,4 1 401019(2) HPSI-F.3/16.6/-30 A Yes No 1,2,3,4 1 401020(2) HPSI-F.3/16.6/-28 A Yes No 1,2,3,4 1 I .

l l

l

TABLE 3.7-lb .~, .

~

fr _ SAFETY RELATED MECHANICAL SNUBB*RS*

HANGER SYSTEM, LOCATION ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT APPLICABLE h TO REMOVE ACTION x NO. (1) AND ELEVATION INACCESSIBLE ZONE ** MODES (3)

(A or I) (Yes or No) (Yes or No)

@ 402008 SDC-F.2/18 9/-32 A Yes No 6 3 4

u 402120 SDC-F.2/18.9/-35 A Yes No 6 3 404020(2) HPSI-E.5/18.4/-8 A Yes No 1,2,3,4 1 405647 RBCCW-M.4/16.6/9 A No No 1,2,3,4 1 408001 RCS-17N/27E/54 I No No 1,2,3,4 1 408002(2) RCS-15N/29E/60 I No No 1,2,3,4 1 w 408003(2) RCS-20N/29E/56 I No No 1,2,3,4 i

^

408004(2) RCS-20N/29E/55 I No No 1,2,3,4 1

[ 408005(2) RCS-23N/29E/52 I Na No 1,2,',4

) 1 408009(3) RCS-23N/30E/46 I No No 1,2,3,4 1 408010(4) RCS-23N/20E/56 I No No 1,2,3,4 1 408011(2) RCS-22N/21E/52 I No No 1,2,3,4 1 408012(2) RCS-22N/21E/52 I No No 1,2,3,4 1 410007 SI-55S/50E/-10 I Yes No 1,?,3(+) 1 410037(2) RCS-17N/38E/53 I No No 1,2,3,4 1 410040 RCS-17N/39E/52 I No No 1,2,3,4 1 410046 RCS-8N/19E/28 I Yes No 1,2,3,4 1

TABLE 3.7-lb .; .

f

_ SAFETY RELATED MECHANICAL SNUBBERS

  • M ,

y HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE TO REMOVE MODES (3) ACTION y No. (1) AND ELEVATION I_NACCESSIBLE ZONE **

(A or I) (Yes or No) (Yes or No) fj 410049 RCS-8N/18E/15 I Yes No 1,2,3,4 1 M

w 410054 RCS-6N/18E/26 I Yes No 1,2,3,4 1 410059 RCS-24S/18E/22 I Yes No 1,2,3,4 1 410062(2) SDC-18S/48W/-6 I No No 6 3 410092 SI-53S/33E/-6 I No No 1,2,3(+) 1 411003 FW-E.0/20.0/37 A No No 1,2,3(2) 2 411009(2) FW-E.0/21.0/47 A No No 1,2,3(2) 2 411016 FW-E.0/22.0/36 A No No 1,2,3(2) 2 i> 411030(2) FW-E.5/23 0/50 A No No 1,2,3(2) 2 411031 FW-E.5/23 0/50 A -

No No 1,2,3(2) 2 411045(2) FW-E.0/22.0/44 A No No 1,2,3(2) 2 411062(2) FW-D.0/20.0/38 A No No 1,2,3(2) 2 413064(2) MS-L.6/19.8/52 A No No 1,2,3 1 413132(2) MS-L.6/18.9/52 A No No 1,2,3 1 413135(2) MS-E.5/19.0/45 A No No 1,2,3 1 414001(2) RCS-22N/20E/55 I No No 1,2,3,4 1 414002(2) RCS-20N/COE/55 I No, No 1,2,3,4 1

TABLE 3.7-_lb .',, *

.-. _ SAFE *Y RELATED_ MECHANICAL SNUBBERS

  • F .

U HANGER SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE O NO. (1) AND ELEVATION INACCESSIBLE ZONE ** TO REMOVE MODES (3) ACTION (A or I) (Yes or No) (Yes or No) 414006(2) RCS-24N/20E/45 I No No 1,2,3,4 1 w 414009(2) RCS-24N/30E/40 I No No 1,2,3,4 1 414016(2) RCS-21N/31E/44 I Ne No 1,2,3,4 1 414018(2) RCS-15N/30E/58 I No No 1,2,3,4 1 414021(2) RCS-15N/31E/54 I No No 1,2,3,4 1 414024(2) RCS-20N/31E/53 I No No 1,2,3,4 1 414025(2) RCS-20N/31E/58 I No No 1,2,3,4 1 414027(2) RCS-21N/30E/58 I No No 1,2,3,4 1 b 414029(4) RCS-20N/33E/51 I No No 1,2,3,4 1 414032(2) RCS-22N/33E/55 I No No 1,2,3,4 1 414033(2) RCS-23N/32E/55 I No, No 1,2,3,4 1 414035 RCS-25N/39E/29 I Yes No 1,2,3,4 1 416016(2) CS-3S/63E/24 I No No 1,2,3(+) 1 416021 CS-43S/43W/7 I No No 1,2,3(+) 1 416022 CS-43S/43W/5 .I No No 1,2,3(+) 1 416032(2) CS-3N/62W/108 I No No 1,2,3(+) 1 427110 SW-L.5/15 9/5 A No No 1,2,3,4 1

% A

TABLE 3.7-lb . '.

f t--

_ SAFETY RELATED MECHANICAL SNUBBERS

  • i 0 HANCER SYSTEM, LOCATION ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT APPLICABLE O No. (1) AND ELEVATION INACCESSIBLE ZONE ** TO REMOVE MODES (3) ACTION (A or I) (Yes or No) (Yes or No)

H 427111 SW-L.5/15 9/5 A No No 1,2,3,4 1 l

427115(2) sW-L.5/15 9/-14 A No No 1,2,3,4 1

] 450058(2) RBCCW-F.8/17 2/-34 A Yes No 1,2,3,4 1

! 501023(2) Cs-E.5/18 5/-41 A Yes No 1,2,3,4 1 o

i 501024 Cs-E.5/18 5/-38 A Yes No 1,2,3,4 1

! 502024(2) SDC-F.2/19.6/-9 A Yes No 6. 3 R u 502026 LPsI-F.2/19.6/-15 A Yes No 1,2,3(+),6 4 q 502035 LPsI-E.5/18 5/-37 A Yes No 1,2,3(+),6 4 RBCCW-H.4/16.6/-13 A No No 1,2,3,4 1

!h505143 507002 sI-34s/44E/17 I No No 1,2,3(+) 1 510004 si-57s/21E/-10 I No No 1,2,3,4 1 512001 MS-E.5/20.0/43 A No No 1,2,3 1

. 512002 MS-M.4/18.9/60 A No No 1,2,3 1

512003 Ms-E.5/20.0/40 A No No 1,2,3 1 513008 Ms-L.5/18.9/44 A No No 1,2,3 2 513036 Ms-K.7/18.9/45 A No No 1,2,3 2 l

l 513040 Ms-L.5/18.9/47 A No No 1,2,3 2 l

l

TABLE 3.7-lb . .

fe _ SAFETY RELATED MECHANICAL SNUBBERS

  • U HANGER SYSTEM, LOCATION ACCESSIBLE OR HICH RADIATION ESPECIALLY DIFFICULT APPLICABLE h _NO. (1) AND ELEVATION I_NACCESSIBLE ZONE ** TO REMOVE MODES _(3) ACTION

, , (A or I) (Yes or No) (Yes or No)

MS-K.6/19.6/-2 A Yes No 1,2,3 2 l l513041

" 513042 MS-K.6/18 9/9 A Yes No 1,2,3 2 514001 RCS-18N/32E/29 I No No 1,2,3,4 1 527071(2) SW-L.5/16.6/-11 A No No 1,2,3,4 1 527072(2) Sw-L.5/16.6/-11 A No No 1,2,3,4 1 I FSKM02022 MS-4S/39E/10 I No No 1,2,3 2 D.P. 107 FSKM02022 MS-3N/39E/10 I No No 1,2,3 2 D.P. 109 w

b FSKM02023 MS-25S/41E/18 I No No 1,2,3 2

$ D.P. 158 l FSKM02024 MS-43S/30E/-10 I Yes No 1,2,3 2 D.P. 23 l FSKM02025 MS-31S/32W/-9 I Yes No 1,2,3 2 D.P. 125(2)

FSKM02026 MS-29S/35W/23 I Yes No 1,2,3 2 D.P. 307 PSKM02027 MS-17S/32W/24 I Yes No 1,2,3 2 D.P. 190 PSKM02030 MS-6N/33W/-5 I No No 1,2,3 2 D.P. 253 ,

.'s .

_ TABLE 3.7-lb ,

f t-

_ SAFETY RELATED MECHAN _ICAL SNUBBERS

  • SYSTEM, LOCATION ACCESSIBLE OR HIGH RADIATION ESPECIALLY DIFFICULT APPLICABLE h HANGER ALTION g No. (1) AND ELEVATION INACCESSIBLE ZONE ** TO REMOVE MODES (3)

(A or I) (Yec or No) (Yes or No)

$ FSKM02097 MS-2S/40E/10 I No No 1,2,3 2 H D.P. 402 l FSKM15021 HPSI-E.5/19 9/-3 A No No 1,2,3,4 1 D.P. 781 FSKM15029 HPSI-F.2/19.6/-3 A No No 1,2,3,4 1 D.P. 537 FSKM17013 CVCS-F.2/19.6/-12 A Yes No 1,2,3,4 1 D.P. 38 w FSKM17095 CVCS-22S/19w/3 I Yes No 1,2,3,4 1

! 2 D.P. 34

-a FSKM17095 CVCS-22S/19w/6 I Yes No 1,2,3,4 1 w

b D.P. 50-1 FSKM17103 CVCS-20S/25w/-11 I Yes No 1,2,3,4 1 D.P. 411-FSKM." 912 CVCS-15S/18w/-6 I Yes No 1,2,3,4 1 D.P. 152 SK-M-1016 MS-K 6/19.6/-2 A Yes No 1,2,3 2

'j D.P. 208 SK-M-1016 MS-K.6/19.6/-2 A Yes No 1,2,3 2 D.P. 215 Table Notation

  • Snubbers may be added to or deleted from safety related systems without prior License Amendment to Table 3 7-lb provided that safety evaluations ,d9cumentation and rep 9rting are prqvided in accord-ance with 10 CFR 50.59 and that a proposed rev,ision to Table 3.7-lb is included with the next  ;

l License Amendment Request.

Modifications to tais table due to changes in high radiation areas shall be submf tted to the NRC as part of the next License Amendment request.

?

(--------__-- __ _ _ _ _ _ _ _ _ _ _ _

l Tables 3.7-la and 3.7-1b (Conttitued) ~

SAFETY RELATED SNUBBERS 4-r M Table Notation Where more than one snubber is associated with a given hanger. it is so j (1) The hanger number is listed.

indicated in parentheses.

m S ubber operability is not required if the line containing the hanger is isolated from the SG.

j (2)

If the associated facility is inoperable, snubber operability is not required.

[

(3) l (4) Whenever irradiated fuel assemblies are in the storage pool.

(+) With pressurizer pressure t 1750 psia.

l ADTION Statements

  • l i

I ACTION 1 - Restore the inoperable snubber '

(s) to OPERABLE status within 7 y

30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

ly ACTION 2the i

- Restore the inoperable snubber (s) to OPERABLE status or isolate the line containing the hanger f affected steam generator within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least 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 /> l4

' m and in a MODE not requiring the snubbers to be OPERABLE within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

ACTION 3 - Restore the inoperable snubber (s) to OPERABLE stjatus within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or suspend all operations involving a reduction in boron concentration of the Reactor Coolant System.

ACTION 4 - Complete ACTION Statement 1 if in't") DES 1, 2 or 3(+) and ACTION Statement 3 if in MODE 6.

j ACTION 5 - Reslore the inoperable snubber (s) to OPERABLE 9tatus within The provisions 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />s3.03 of Specification or verify are notthe temp j

from the shutdown cooling heat exchangers is igolated.

applicable. .

? .

ACTION 6-Restoretheinoperablesnubber(s)toOPERABLE5tatuswithin72hoursorconnectshutdowncoolingto the spent fuel pool cooling system. The provisions of Specification 3.03 are not applicable.

may be

  • An engineering evaluation of systems or components supported by inoperable snubber (s) performed to declare the affected system operable.

1

.v',

TABLE 4.7-3 SNUBBER VISUAL INSPECTION SCHEDULE NUMBER OF SNUBBERS FOUND INOPERABLE SUBSEQUENT VISUAL' INSPECTION DURING INSPECTION INTERVAL

  • INTERVAL **#

0 18 months i 25%

1 12 months i 25%

2 6 months 25%

3 or 4 124 days i 25%

5, 6 or 7 62 days i 25%

>8 31 days i 25%

  • Snubbers may be categorized into two groups: Mechanical and Hydraulic. Each group w may be divided into two subgroups: those accessible and those inaccessible during 1 reactor operation. Each group and subgroup may be inspected independently in accordance with the above schedule.

w

    • The required inspection interval shall not be lengthened more than one step at a time.
  1. The provisions of Specification 4.0.2 are not applicable.

2

.O.4 PLANT SYSTEMS 3/4.7.8 SNUBBERS BASES 3.4.7.8 SNUBBERS All snubbers are required OPERABLE to ensure that the structural integrity of the reactor coolant system and all other safety related systems is maintained during the following: a seismic or other event initiating dynamic loads. Snubbers excluded from this inspecdtion program are those installed on nonsafety-related systems and then only if their failure or failure of the system on which they are installed, would have no adverse effect on any safety related system.

The visual inspection frequency is based upon maintaining a con-stant level of snubber protection to systems. Therefore, the required inspection interval varies inversely with the observed snubber failures and is determined by the number of inoperable snubbers found during an inspection. Inspections performed before that inverval has elapsed may be used as a new reference point to determine the next inspection. However, the results of such early inspections performed before the original required time interval

! has elapsed (nominal time less 25%) may not be used to lengthen l the required inspection interval. Any inspection whose results require a shorter inspection interval will override the previous schedule.

When the cause of the rejection of a snubber is clearly established l

and remedied for that snubber and for any other snubbers that may l be generically susceptible, that snubber may be exempted from being I counted as inoperable. Generically susceptible snubbers are those which are of a specific make or model and have the same design features directly related to rejection of the snubber by visual inspection, or are similarly located or exposed to the same environ-mental conditions such as temperature, radiation, and vibration.

When a snubber is found inoperable, an engineering evaluation is performed, in addition to the determination of the snubber mode of failure, in order to determine if any safety related component or system has been adversely affected by the inoperability of the snubber.

MILLSTONE UNIT NO. 2 B 3/4 7-5 l

-. e

W c'yt D .

PLANT SYSTEMS 3/4.7.8 SNUBBERS The engineering evaluation shall determine whether or not the snubber mode of failure has imparted a significant effect or degradation on the supported component or system.

To provide assurance of snubber reliability, a representative sample of the installed snubbers will be tested during plant shutdowns at eighteen (18) month intervals. Observed failures of these sample snubbers shall require testing of additional units.

Hydraulic snubbers and mechanical snubbers may each be treated as a different entity for the above surveillance programs.

i l

l l

MILLSTONE UNIT NO. 2 B 3/4 7-6 m

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