ML20078E205

Proposed Tech Specs Re Snubber Visual Insp Intervals

ML20078E205
Person / Time
Site:	Quad Cities
Issue date:	01/20/1995
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20078E178	List: ML20078E176 ML20078E205
References
NUDOCS 9501310167
Download: ML20078E205 (3)

Text

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OPR-30 -

1. Shock Suppress:rs (Snubbers) 1. shock Suppressors (Saubbers)

• The following surveillance requirements apply to all snobbers on safety related piping systems.

1 Dering all modes of operatlui 1. VisualInsametiong -

ext;ept Shutdown and Refuel, all snubbers on safety related Snubbers are categorized se piping systoes shall be operable except as noted in 3.6.1.2 inaccessible or eccessible durine  !

reactor operation. Rech of those

. following.

categodos Oneccessible end eccessible) -

2. From and after the ties that a may be Wed %@g  ;

snu6ber is determined to be occantnB to the eM determined inoperable. continued reactor by Table 4.8 3. The visual inspection operation is paroissible during interval for each type of sn2ber shou  :

the succeeding 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> only if be detennined bened upon the criterie i the snubber is sooner ende provided in Table 4.5 3". l operable.

2. ViauniInanecdon Accentance Critarla

3. If the requirements of 3.6.I.I and 3.6.I.2 cannot be set. an Visual inspectiary: shell verify thet: )

orderly shutdown shall be (1) the enubber has no visible l Initiated and the reactor shall indications of demoge or impelred -

i be in a cold shutdown condition operebsity, (2) ettschments to the within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. foundation or supporting structure are  :

functional, and (3) fasteners for the

4. If a snubber is determined to be l inoperable while the reactor is attachment of h snubber to the in the Shutdown or Refuel mode, component and to the enubber i enchorage are funcdonel. Snubbers er e pri to ea "U '88"' I"*P'* ** ' # #

startup. M inspections shof n cisseified es unacceptable. A review and evolustion shall be performed and documented to justify condnued operation with en unsoceptable enubber. If continued operadon cannot be justified, the  !

anubber shmR be deciered inoperable i and the requirements of Specification 3.8.1.2 shes he met.

t s lhe nest inspection intseval determined usine tNs crrtens shall be based soon the previous s'upection interval as estebneted by the rc.wirements in effect twoore amendment (145).

1 16318/0600Z 3.6/4.6-Sc Amendment No. I45 9501310167 950120 PDR ADOCK 05000265 P PDR

Qua0-CITIES OPR-30 l

t

3. Once each refueling cycle a i representattee sample of 101 of

. the total of each type of snobber la use la the plant shall be functionally tested i either in place or In a bench test. for each snubber that does not met the functional test criteria, an additional 10%

of that type of snobber shall be functionally tested. *

4. The mechanical snubber functional tests shall verify:

a. That *.he breakaway force ,

that inttlates free movement  !

of the snubber rod in either tension or compression is less than the s maalaus force. pecified.

I

b. That the activation

-(restralelas action) is achieved within the specified range of acceleration In both tension and cameression.

1

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11788 3.6/4.5-6 Amendment No.145 l

, QUAD-CITIES

,' DPR 30 ,

Intia4.5-2 SNUBBER VISUAL INSPECTION CRITEpfA NuumER OF UNACCEPTAnt s gNutaran Population"*' Column A " Column 5

• Column C **

at Catasary Extend interval Renaat interval Reduca interval 1 0 0 i 80 0 0 2 100 0 1 4 160 0 3 s 2CG 2 5 13 l 300 5 12 25 1 400 8 18 36 600 12 24 48 750 20 40 '78 a1000 29 58 109 l

a The next visual inspection hterval for e anubber population or cate0ery si e ehes be determined bened upon to previous inspection interval and the asumber of unacceptable enubbers f ound during that Irvterval. Snnebers eney be cate0orised, based upon ther eccessibillry during power operation, es accessible or inaccessible. These categories rney be semined separately or joinfy. However, the declaion must be made and documented before arvy inspection and shall De used as the begie upon wtuch to determine 9te nest inspection biterval for that catsgery.

b Interpolation between W--i . er catepery elaos and me nurnber of uneocopistie endbers le permissible. Use next lower integet for the value of the Imit for Cakevine A B, or C If that Integer inchmies a frecconal value of ur:seceptable enubbers as determined by :. , '

c sf the number of unacceptable en@bers 4 squel to er lose'then the number in Coltann A, the nest inspection interval rney be twice the previsue interval, but not greater then 48 momhe.

d if the number of unacceptable anubbere le equal to or lose than the numbei in Column 8 but greater then the number in Colurnn A, the nest beoection Inter-'ad shoe be the _eame es the previous interval, a w the numter at unacceptease endbere le equel to or greater then the nunter in Column C, the nest inepection interval shes be two thirge of the provieue interval, but not less then 31 days. However, if the number of unacceptable endbers le less then the number in Coeumn C but greater then the number in Cohann B, the next intervW shes be reduoed proportleneBy by interpolatiorg that le, the peevious interval shoe be toduced by a factor that is one-third of the rette of the 6fferenes between the number of u.w onebers f ound during the preveue interval and the number in Column 8 to me dfference in the numbers la Columne 5 and C.

f The ..:i .;, of Spedfication 1.0.00 ers appilneble for og inspection intervels up to erui including 48 months.

3.6/4.8 22 Amerdment No.145

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