ML20154J962

Proposed Tech Spec Pages 3/4 7-27 & 3/4 7-28,providing Flexibility to Align Snubber Insp Intervals W/Refueling Outage When No Failures Encountered

ML20154J962
Person / Time
Site:	LaSalle
Issue date:	09/09/1988
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20154J941	List: ML20154J935 ML20154J962
References
5061K, NUDOCS 8809230187
Download: ML20154J962 (3)

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PLANT SYSTEMS  !

3/4.7.9 SNUBBERS j LIMITING CONDITION FOR OPERATION -

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i 3.7.9 All hydraulic and mechanical snubbers shall be OPERABLE. lj APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3, and OPERATIONAL CONDITIONS 4 .

and 5 for snubbers located on systems required OPERABLE in those OPERATIONAL j CONDITIONS. j ACTION:

With one or more snubbers inoperable, on any system, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> replace or i restore the inoperable snubber (s) to OPERABLE status and perform an engineering eval- j uation per Specification 4.7.99. on the attached component or declare the attached system inoperable and follow the appropriate ACTION statement for that system.

I SllRVEILLANCE REQUIREMENTS

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

a. Inspection Types As used in this specification, type of snubber shall mean snubbers of the same design and manufacturer, irrespective of capacity.

b. Visual Inspections i Snubbers are categorized as inaccessible or accessible during reactor operation. Each of these groups (inaccessible and accessible) may be inspected independently according to the schedule below. The first inservice visual inspection of each type of snubber shall be performed l after 4 months but within 10 nonths of commencing POWER OPERATION and shal.1 include all hydraulic and mechanical snubbers. If all snubbers of each type on any system are found OPERABLE during the first inservice visual inspection, the second inservice visual inspection of that system I

shall be performed at the first refueling outage. Otherwise, subsequent i visual inspections of a given system shall be performed in accordance

with the following schedule

M. Inoperable Snubbers of Each Type subsequent Q ual l On Any System per Inspeccion Period Inspection FFriod*#

l 0 18 months 2s> -5o% + 25%

i 1 12 conths 4 4 1

2 6 months 25%

3, 4 124 days 25%

5, 6, 7 62 days 2 25%

8 or core 31 days 25%

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j *The inspection interval for each type of snubber on a given system shall not i be lengthened r> ore th n one step at a time unless a generic proble a as been

identified and corrected; in that event the inspection interval may be l 1cngthened one step the first tim and two steps tnereaf ter if no inoperable snubbers of that type are found cn that system.

9The provisions of Specification 4.0.2 are net cpp1

• cable.

LA SALLE - UNIT 1 3/4 7-27 Amendment No. D 8809230187 000909 PDR ADOCK 05000373 P PNU

i PLANT SYSTEMS 3/4.7.9 SNUBBERS LIMITING CONDITION FOR OPERATION 3.7.9 All hydraulic and mechanical snubbers shall be OPERABLE.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and.3. '0PERATIONAL CONDITIONS 4 i and 5 for snubbers located on systems required OPERABLE in those OPERATIONAL CONDITIONS.

ACTION:

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With one or more snubbers inoperable on any system, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> replace or restore the inoperable snubber (s) to OPERABLE status and perform an engineering evaluation per Specification 4.7.9g. on the attached component or declare the-attached system inoperable and follow the appropriate ACTION statement for that system.

SURVEILLANCE REQUIREMENTS 4.7.9 Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program and the requirements of Specification 4.0.5.

a. Inspection Types s As used in this specification, type of snubber shall mean snubbers of the same design and manufacturer, irrespective of capacity,

b. Visual Inspections Snubbers are categorized as inaccessible or accessible during reactor operation. Each of these groups (inaccessible and accessible) may be inspected independently according to the schedule below. The first inservice visual inspection of each type of snubber shall be performed after 4 months but within 10 months of commencing POWER OPERATION and shall include all hydraulic and mechanical snubbers. If all snubbers of each type on any system are found OPERABLE during the first inser- l

. vice visual inspection, the second inservice visual inspection of that system shall be performed at the first refueling outage. Otherwise, subsequent visual inspections of a given system shall be performed in accordance with the following schedule:

No. Inoperable Snubbers of Each Type Subsequent V2 .aal On Any System per Inspection Period '

Inspection Pc ied' #

0 18 monthsW250g 4257 1 12 months 1 /04 2 6 months i 25%

3,4 124 days 25%

5,6,7 62 days 25%

8 or more 31 days 25%

^The inspection interval for each type of snubber on a given system shall not he lengthened nore than one step at a time unless a generic problem has been identified and corrected; in that event the inspection interval r.ay be

, lengthened nne step the first time and two steps thereafter if no inoperable i snunbers of that type are found on th3t system.

cThn pros icions of Specification 4.0.2 cre not applicable.

(A S E LE - UNIT 2 3/4 7-2S / .enh ant ho. la

ATIACMENT C TECHNICAL SPECIFICATION CHANGE REQUEST LASALLE COUNTY STATION UNITS 1 AND 2 EYALUAIION OF SIGt(IIICMiT_liAZARDS CONSIDERATIOti Commonwealth Edison has evaluated the proposed Technical Specifi-cation Amendment and determined that it does not represent a significant hasards consideration. Based on the criteria for defining a significant hasards consideration established in 10 CFR 50.92, operation of LaSalle County Station Units 1 and 2 in accordance with the proposed amendment will nat

1) Involve a significant increase in the probability or consequences of an accident previously evaluated because this change has been evaluated against those criteria for which the original limit of minus 25% was established. That limit was imposed to insure adequate service life occurred to be able to visually observe degradatalon. After nine months, sufficient service life will have occurred to allow a detection of snubber degradation, thus establishing the basis for the next cycle.

2) Create the possibility of a new or different kind of accident from any accident previously evaluated because the change does not add or remove plant equipment or affect how this equipment is operated.

3) Involve a significant reduction in the margin of safety because anubber visually inspected after a nine month cycle hav9 gone through sufficient service life to see degradation. This change does not extend the service time betreen inspections.

Guidanca has been provided in $1 Fr 7744 for the application of standards to license change requests for determination of the existence of significant hazards considerations. This document provides examples of mnendments which are and are not likely considered to involve significant hazards considerations.

This proposed amendment does not involve a significant relaxation of the criteria used to establish safety limits, a significant relaxation of the bases for the limiting safety system settings or a oignificant relaxation of the bases for the limiting conditions for operations. Therefore, based on the guidance provided in the Federal Register and the criteria established in 10 CFR 50.92(e), the proposed change does not constitute a significant hazards considerations.

5061K