ML18057A984

Proposed Tech Specs Re Inservice Insp Program for Shock Suppressors (Snubbers)

ML18057A984
Person / Time
Site:	Palisades
Issue date:	06/13/1991
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18057A983	List: ML18057A982 ML18057A984
References
NUDOCS 9106250042
Download: ML18057A984 (7)

Text

ATTACHMENT 1 Consumers Power Company Palisades Plant Docket 50-255 TECHNICAL SPECIFICATIONS CHANGE REQUEST INSERVICE INSPECTION PROGRAM FOR SHOCK SUPPRESSORS (SNUBBERS)

PROPOSED CHANGED PAGES June 13, 1991 2 Pages 9106250042 910613 PDR ADOCK 05000255 P PDR

4.16 Inservice Inspection Program for Shock Suppressors (Snubbers)

App 1i cabil ity Applies to periodic surveillance of safety-related snubbers as described per Specification 3.20.

Specifications 4.16.l Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program in addition to the requirements of Specification 4.0.5. As used in this specification, "type of snubber" shall mean snubbers of the same design and manufacturer, irrespective of capacity.

a. Visua 1 Inspection Snubbers are categorized as inaccessible or accessible during reactor operation. Each of these categories (inaccessible and accessible) may be inspected independently according to the following paragraph:

If one or more unacceptable snubbers are found, the next inspection interval shall be 2/3 (-25%) of the* previous interval. If no unacceptable snubbers are found, the next interval may be doubled (-

25%), b~t not to exceed 48 months. The interval extension provisions of Technical Specification 4.0.2 are applicable for all inspection intervals up to and including 48 months. *

• Inspections performed before the interval 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 the required inspection interval.* Any inspection whose results require a shorter inspection interval will override the previous schedule.

b. Visual Inspection Acceptance Criteria Visual inspection shall verify that (1) the snubber has no visible indications of damage or impaired OPERABILITY, (2) attachments to the foundation or supporting structur.e are functional, and (3) fasteners for the attachment of the snubber to the component and to the snubber anchorage are fun ct i ona 1 . Snubbers which appear inoperable as a result of visual inspections shall be classified as unacceptable and may be reclassified acceptable for the purpose of establishing the next visual inspection interval, provided that (I) the cause of the rejection is clearly established and remedied for 4-71 Amendment No. i~, ~~' )~7

4.16.1 Specifications (continued) that particular snubber and for -other snubbers, irrespective of type, that may be generically susceptible; and (2) the affected snubber is functionally tested in the as-found condition and determined OPERABLE per Technical Specification 4.16.ld or 4.16.le, as applicable. All snubbers found connected to an inoperable common hydraulic fluid reservoir shall be counted as unacceptable for determining the next inspection interval. A review and evaluation sha 11 be performed and documented to justify continued operation with an unacceptab 1e snubber. If continued operation cannot be justified, the snubber shall be declared inoperable and the action requirements shall be met.

1 2

• Notes 1 and 2 have been deleted.

4-7la Amendment No. J.'/J, ~~' J~l

ATTACHMENT 2 Consumers Power Company Palisades Plant Docket 50-255 TECHNICAL SPECIFICATIONS CHANGE REQUEST INSERVICE INSPECTION PROGRAM FOR SHOCK SUPPRESSORS (SNUBBERS)

EXISTING PAGES WITH PROPOSED CHANGES June 13, 1991 3 Pages

4.16 Inservice Inspection Program for Shock Suppressors (Snubbers Applicability Applies to periodic surveillance of safety-related snubbers as described per Specification 3.20.

Specifications SE e ATTAC.~E.\') ~AGES Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program.

Visual Inspection Visual inspection shall be performed in accordance with following schedule:

Snub be rs Subsequent Period Ins ection 18 12 6 mon 124 d 62 3

The snubbers may accessible and those Each group may be inspected above schedule.

b. Visual Ins Visual all verify 1) that there are no visible indications of d e or impaired PERABILITY and (2) attachments to the foundatio . or supporting st ture are secure. Snubbers which* appear i perable as a result o visual inspections may be determined 0 LE for the purpose of stablishing the next ction interval, providing th (1) the cause of the s clearly established and remed d for that particular sn~bber nd for other snubbers that may be g erically

• susce ible; and (2) the affected snubber is ctionally tested e as-found condition and determined OPERAB per cifications 4.16.1.d or 4.16.1.e, as applicabl All snubbers nnected to an inoperable common hydraulic fluid r ervoir shall be counted as inoperable snubbers.-

inspection interval shall not be lengthened more than one step at a t provisions of Specification 4.0.2 are not applicable.

4-71 Amendment No. tJ, 69,~

October 20, 1987

• i*. TSP0587-0063-NL04

4 .16 .1 Each snubber sha 11 *be demonstrated OPERABLE by performance of the following augmented inservice inspection program in addition to the requirements of Specification 4.0.5. As used in this specification, "type of snubber" sh~ll mean snubbers of the same design and manufacturer, irrespective of capacity.

a. Visual Inspection

• Snubbers are ~ategorized as inaccessible or accessible during reactor operation. Each of these categories (inaccessible and accessible) may be inspected independently according to the following paragraph:

If one or more unacceptable snubbers are found, the next inspection interval shall be 2/3 (-25%) of the previous interval. If no unacceptable snubbers are found, the next interval may be doubled (-25%), but not to exceed 48 months. The interval extension provisions of Technical Specification 4.0.2 are applicable for all inspection intervals up to and including.48 months.

Inspections performed before the interval 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 the required inspection interval. Any inspection whose results require a shorter inspection interval will override the previous schedule.

b. Visual Inspection Acceptance Criteria Visual inspection shall verify that (1) the snubber has no visible indications of damage or impaired OPERABILITY, (2) attachments to the foundation or supporting structufe are functional, and (3) fasteners for the attachment of the snubber to the component and to the snubber anchorage are functional. Snubbers ~hich appear inoperable as a result of visual in~pections shall be classified as .

unacceptable and may be reclassified acceptable for the purpose of establishing the next visual inspection interval, provided that (1) the cause of the rejection is clearly established and remedied for that particular snubber and for other snubbers, irrespective of type, that may be generically susceptible; and (2) the affected snubber ls functiorially t~st~d in.the as-fo~nd tond1ti~n and determined OPERABLE per Technical Specification 4.16.ld or 4.16.le, as applicable. All snubbers found connected to an inoperable common hydraulic fluid reservoir shall be counted as unacceptable for determining the next inspection interval. A review and evaluation shall be performed and documented to justify continued operation with an unacceptable snubber. If

• ! I ~.

I ..

I *,-

continued operation cannot be justified, the snubber shall be declar~d inoperable and the action requirements shall be met.

1 2

• Notes 1 and 2 have been deleted.