ML17223B297

Corrected Amends 110 & 51 to Licenses DPR-67 & NPF-16, Respectively,Correcting Amend Numbers on Tech Spec 3/4.7.10 Re Insp Intervals for Snubbers

ML17223B297
Person / Time
Site:	Saint Lucie
Issue date:	11/06/1991
From:	NRC
To:
Shared Package
ML17223B298	List: ML17223B297
References
NUDOCS 9111110266
Download: ML17223B297 (17)

Text

LIHITING CONDITION FOR OPERATION aaaasaasaaassaasaaaaasasaassasaaaaaaaaaaaaaasaaaaaaaaaaaaaaaaaaaaaaaaaaa 3.7.10 A11 saFety related snubbers shall be OPERABLE.

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t d systems required OPERABLE in those HOOES).

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fifth one or more safety related snubbers inoperable, 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 or declare the supported system inoperable and follow the appropriate ACTION statement for that system.

SURVEILLANCE REQUIREMENTS saaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 4.7.IO Each snubber shall be demonstrated OPERABLE by performance of the foIIowfng augmented fnservfce fnspectfon program.

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

a e tions Snubbers are categorized as inaccessible or accessible during reactor operation.

Each of these categories (inaccessible or accessible) may be inspected independently according to the schedule determined by Table 4.7-3.

The visual inspection interval for each category of snubber shall be determined based upon the crfteria provided in Table 4.7-3 and the first inspection interval determined usfrrg this criteria shall be based upon the previous inspection interval as established by the requirements in effect before Amendment ST.

LUCIE - UNIT 1 9111110266 911106 PDR ADOCK 05000335 P

PDR 3/4 7-29 Amendment No. 84,44,8S, 110,

SURVEILLANCE REQUIREMENTS (Continued)

SSSSSSSSSSSSNSSSSSSRSSSSNSSSSSSSSSSSSSSSSSSSgigggggggggggggggggggg~~~++i c ~

A an Visual inspections shall verify that (1) the snubber has no visible indications of damage or impaired OPERABILITY, (2) attach-ments to the foundation or supporting structure are functional, and (3) fasteners for the attachment of the snubber to the compo-nent and to the snubber anchorage are functional.

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 estab-lished and remedied for that particular snubber and for other snubbers irrespective of type that may be generically susceptible; and (ii) the affected snubber is functionally tested in the as-found condition and determined OPERABLE per specifica-tions 4.7. 10.e and 4.7. 10.f, 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 docu-mented to justify continued operation with an unacceptable snub-ber. If continued operation cannot be justified, the snubber shall be declared inoperable and,the ACTIN requirements shall be met.

TABLE 4.7-3 SNUBBER VISUAL INSPECTION INTERVAL NUM R

A Population or Category N t s a

Column A Extend Interval and 6

Column B

Repeat Interval N

e 4

Column C

Reduce Interval 1

80 100 150 200 300 400 500 750 1000 or greater 8

12 20 29 3

5 12 18 24 40 56 8

13 25 36 48 78 109 ST.

LUCIE - UNIT 1 3/4 7-29a Amendment No.

110,

I

SURVEILLANCE REQUIREMENTS (Continued) 808gggggg 8S 8 S 88 88 5 588 8888 80 N'588 8 8 8 88 N8 8 88 888888888 N088 0880888k888888888 Note I:

Note 2:

Note 3:

Note 4:

Note 5:

The next visual inspection interval for a snubber population or category size shall be determined based upon the previous inspec-tion interval and the number of unacceptable snubbers found during that interval.

Snubbers may be categorized, based upon their accessibility during power operation, as accessible or inaccessi-ble.

These categories may be examined separately or )ointly.

However, the licensee must make and document that decision before any inspection and shall use that decision as the basis upon which to determine the next inspection interval for that category.

Interpolation between population or category sizes and the number of unacceptable snubbers is permissible.

Use next lower integer for the value of the limit for Columns A, B, or C if that integer includes a fractional value of unacceptable snubbers as determined by interpolation.

If the number of unacceptable snubbers is equal to or less than the number in Column A, the next inspection interval may be twice the previous intervaT but not greater than 48 months.

If the number of unacceptable snubbers fs equal to or less than the number in Column B but greater than the number in Column A, the

, next inspection interval shall be the same as the previous inter-val.

If the number of unacceptable snubbers is equal to or greater than the number in Column C, the next inspection interval shall be two-thirds of the previous interval.

However, if the number of unac-ceptable snubbers is less than the number in Column C but greater than the number in Column B, the next interval shalT be reduced proportionally by interpolation, that is, the previous interval shall be reduced by a factor that is one-third of the ratio of the difference between the.number of unacceptable snubbers found during the previous interval and the number in Column B to the difference in the numbers in Columns B and C.

Note 6:

The provisions of Specification 4.0.2 are applicable for all inspection intervals up to and including 48 months.

ST..LUCIE - UNIT I 3/4 7-29b Amendment No. 110, n

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SURVEILLANCE REgUIREHENTS (Continued) sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss d.

At least once per 18 months during shutdown, a representative sample (led of the safety related snubbers) shall be functionally tested either in place or in a bench test.

For each snubber that does not meet the functional test acceptance criteria of Specification 4.7. 10.e or 4.7.10.f, an additional 10K of that type of snubber shall be functionally tested.

Functional test shall continue until no additional snubbers are found inoperable or all safety related snubbers have been tested.

The representative sample selected for functional testing shall include the various configurations, operating environments and the range of siie and capacity of snubbers.

Snubbers identified as "Especially Difficult to Remove" or in "High Exposure Zones-During Shutdown" shall also be included in the representative sample.* Safety related hydraulic snubber listings and-safety related mechanical snubber listings may be used jeintly or separately as the basis for the sampling plan.

In addition to the regular sample, snubbers which failed the previous functional test shall be retested during the next test period. If a spare snubber has been installed in place of a faijed snubber, then both the failed snubber (if it is repaired and installed in another position) and the spare snubber shall be retested.

Test results of these snubbers shall not result in additional functional testing due to failure.

• Permanent or other exemptions from the functional testing for individual snubbers in these categories may be granted by the Commission only if justifiable basis for exemption is presented and/or snubber life destructive testing was performed to qualify snubber operability for all design conditions at either the completion of their fabrication or at a subsequent date.

ST.

LUCIE - UNIT 1 3/4 7-30 Amendment No. ~H-,SS,

110,

I 1

SURVEILLANCE REQUIREMENTS (Continued) ssasssgasssssssssssssssssssssnssnassssassssssssnsssssssssssssssssss If any snubber selected for functional testing either fails to lockup or fails to move, i.e., frozen in place, the cause will be evaluated and if caused by manufacturer or design deficiency, all snubbers of the same design subject to the same defect shall be functionally tested.

This testing requirement shall be independent of the requirements stated above for snubbers not meeting the functional test acceptance criteria.

H raulic Sn bbers Functional Test Acc tance riteri 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.

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, The mechanical snubber functional test shall verify that:

1.

The force that initiates free movement of the snubber rod in either tension or compression is less than the specified maximum drag force.

2.

Activation (restraining action) is achieved in both tension and compression.

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f A.record of the ser vice life of each

snubber, the date at which the designated service life commences and the installation and maintenance records on which the designed service life fs based shall be maintained as required by Specification 6. 10.2. 1.

Concurrent with the first inservice visual inspection and at least once per 18 months thereafter, the installation and maintenance records for each safety related snubber shall be reviewed to verify that the indicated service life has not been exceeded or will not be exceeded by more than 10% prior to the next scheduled snubber service life review. If the indicated service life will be exceeded by more than 10K prior to the next scheduled snubber service life review, the snubber servfce life shall be reevaluated or the snubber shall be replaced or reconditioned so as to extend its service life beyond the date of the next scheduled service life review.

The results of the reevaluation may be used to justify a change to the service life of the snubber.

This reevaluation, replacement or reconditioning shall be indicated fn the records.

ST.

LUCIE - UNIT 1 3/4 7-31 Amendment No. 24

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110

TABLE 3.7-2a In cn 44 D>>

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LIST OF TABLES (Continued) sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss ISRLK 25K 3.7-1 MAXIMUMALLOWABLE LINEAR POWER LEVEL-HIGH TRIP SETPOINT WITH INOPERABLE STEAM LINE SAFETY VALVES DURING OPERA-TION WITH BOTH STEAM GENERATORS......................

3/4 7-2 4.7-0

4. T-l 4.7-2 3.7-3a 3.7-3b 3.7-4 STEAM LINE SAFETY VALVES PER LOOP....................

SECONDARY COOLANT SYSTEM SPECIFIC ACTIVITY SAMPLE AND ANALYSIS PROGRAM.....................................

SNUBBER VISUAL INSPECTION INTERVAL...................

SAFETY-RELATED HYDRAULIC SNUBBERS....................

SAFETY-RELATED MECHANICAL SNUBBERS FIRE HOSE STATIONS...................................

3/4 7-3 3/4 7-8 3/4 7-22 3/4 7-26 3/4 7-27 3/4 7-36

3. T-5 4.8-1 4.8-2 3.8-1 3/4 8-12 3/4 8-18 3/4 11-2 BATTERY SURVEILLANCE REQUIREMENT...................

MOTOR-OPERATED VALVES THERMAL-OVERLOAD PROTECTION BYPASS DEVICES.......................................

4.11-1 RADIOACTIVE LI(UID WASTE SAMPLING AND ANALYSIS ROGRAMo ~ o o o ~ o o o o o o o o o ~ o o o o o o o ~ o o o o o o o o o o o o o o o o o o o o o o P

4.11-2 RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS YARO FIRE HYDRANTS AND ASSOCIATED HYDRNT HOSE HOUSES 3/4 T-3$

DIESEL GENERATOR TEST SCHEDULE......................

3/4 8-8 ROGRAMo ~ ~ ~ ~ o ~ ~ ~ ~ ~ ooooo ~ ~ ~ ~ ~ ~ ~

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P 3/4 11-8 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM........

3/4 12-3 3.12-1 3.12-2 REPORTING LEVELS FOR RADIOACTIVITYCONCENTRATIONS IN ENVIRONMENTALSAMPLES................................

3/4 12-7 3/4 12-8 B 3/4 2-3 B 3/4 4-9 4.12-1 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE LYSIS ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

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D B 3/4.2-1 B 3/4.4-1 REACTOR VESSEL TOUGHNESS.............................

5.7-1 6.2-1 COMPONENT CYCLIC OR TRANSIENT LIMITS.................

5-5 MINIMUM SHIFT CREW COMPOSITION -

TWO UNITS %TH TM SEPARATE CONTROL ROOMSo ~ ooooo ~ ~ ~ ~ ~ ~ oo ~ ~ ~ ~ o ~ ooo ~

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LUCIE - UNIT 2 XXV Amendment No. 8, 51

LIHITING CONOITION FOR OPERATION 3.7.9 All safety-related snubbers shall be OPERABLE.

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d systems required OPERABLE in those NOOES.

With one or more safety related snubbers inoperable, 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 4.7.9f.

on the supported component or declare the supported system inoperable and follow the appropriate ACTION statement for that system.

SURVEILLANCE REgUIREHENTS SQQSRRRRSRRQRRSRSQRRSRRSQSORRRRS R'SXRSRWRRRQSRSNSSWSSRRRRRSWSRRRRRSSRSSSS~

4.7.9 Eactr snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program.

a 0 i

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As used in this specification, "type of snubber" shall mean snub-bers of the same design and manufacturer, irrespective of capacity.

b.

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s e tions Snubbers are categorized as inaccessible or accessible during reactor operation.

Each of these categories (inaccessible or accessible) may be inspected independently according to the schedule determined by Table 4.7-2.

The visual inspection interval for each category of snubber shall be determined based upon the criteria provided in Table 4.7-2 and the first inspection interval determined using this criteria shall, be based upon the previous inspection interval as established by the requirements in effect before

. Amendment ST.

LUCIE - UNIT 2 3/4 7-21 Amendment No. 28, 51

y SURVEILLANCE REQUIREMENTS (Continued) ggggggggggSSSSSSSNSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSOSSSSSSSSSSSSSSNSSS c ~

Visual inspections shall verify that (1) the snubber has no visible indications of damage or impaired OPERABILITY, (2) attachments to the foundation or supporting structure are functional, and (3) fast-eners for the attachment of the snubber to the component and to the snubber anchorage are functional.

Snubbers which appear inoperable as a result of visual inspections shall be'lassified as unaccept-able and may be reclassified acceptable for the purpose of estab-lishing the next visual inspection interval, provided that (i) 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 (ii) the affected snubber is functionally tested in the as-found condition and determined OPERA-BLE per specification 4.7. 10.e.

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 contin-ued operation with an unacceptable snubber.

If continued operation cannot be justified, the snubber shall be declare inoperable and the ACTION requirements shall be met.

TABLE 4.7-2 SNUBBER VISUAL INSPECTION INTERVAL N

NAC A

R Population or Category e

a Column A Column 8 Column C

Extend Interval Repeat Interval Reduce Interval n

1 80 100 150 200 300 3

5 12 8

13 25 400 500 750 1000 or greater 8

12 20 29 18 24 40 56 36 48 78 109 ST.

LUCIE - UNIT 2 3/4 7-22 Amendment Ho. S~,

51

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SURVEILLANCE REgUIREHENTS (Continued)

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSgggggggggggggggggggggggggggggggggggggg Note 1:

The next visual inspection interval for a snubber population or category size shall be determined based upon the previous inspection interval and the number of unacceptable snubbers found during that interval.

Snubbers may be categorized, based upon their accessibil-ity during power operation, as accessible or inaccessible.

These categories may be examined separately or jointly.

However, the licensee must make and document that decision before any inspection and shall use that decision as the basis upon which to determine the next inspection interval for that category.

f Note 2:

Interpolation between population or category sizes and the number of unacceptable snubbers is permissible.

Use next lower integer for the value of the limit for Columns A, B, or C if that integer in-cludes a fractional value of unacceptable snubbers as determined by interpolation.

Note 3:

Note 4:

Note 5:

If the number of unacceptable snubbers is equal to or less than the number in Column A, the next inspection interval may be twice the previous interval but not greater than 48 months.

If the number of unacceptable snubbers is equal to or less than the number in Column B but greater than the number in Column A, the next inspection interval shall be the same as the previous interval.

If the number of unacceptable snubbers is equal to or greater than the number in Column C, the next inspection interval shall be two-thirds of the previous interval.

However, if the number of unac-ceptable snubbers is less than the number in Column C but greater than the number in Column B, the next interval shall be reduced proportionally by interpolation, that is, the previous interval shall be reduced by a factor that is one-third of the ratio of the difference between the number of unacceptable snubbers found during the previous interval and the number in Column B to the difference in the numbers in Columns B and C.

Note 6:

The provisions of Specification 4.0.2 are applicable for all inspec-tion intervals up to and including 48 months.

ST.

LUCIE - UNIT 2 3/4 7-22a Amendment No.

51,

P T

Y T SURVEILLANCE REQUIREMENTS (Continued) ssassssssssssssssssssssssasaasssasssssssssssssssssssssasasssssssassssas d.

During the first refueling shutdown and at least once per 18 months thereafter during shutdown, a representative sample of either:

(1) At 1east 1Nf of the total of each type of safety related snubber in use in the plant shall be functionally tested either in place or in a bench test.

For each snubber of a type that does not meet the functional test acceptance criteria of Specification 4.7.9e.

an additio lOX of that type of snubber shall be functionally tested until no more failures are found or until all snubbers of that type have been functionally tested or (2) A representative sample of each type of snubber shall be functionally tested in accordance with Figure 4.7-1.

"C" is the total number of snubbers of a type found not meeting the acceptance requirements of Specification 4.7.9e.

The cumulative number of snubbers of a type tested is denoted by "N".

At the end of each day's testing, the new values of "N" and "C" (previous day' total plus current day's increments) shall be plotted on Figure 4.7-1.

If at any time the point plotted falls in the Reject" region, all snubbers cf that type design shall be hmctionally testa'. If at any time the point plotted falls in the "Accept" region, testing of that-type of snubber shall be terminated. lien the point plotted lies in the "Continue Testing" region, additional snubbers of that type shall be tested until the point falls in the "Accept" regio'n or the "Reject" region, or all the snubbers of that type have been tested.

The representative sample selected for functional testing shall include the various configurations, operating environments, and the range of size anct capacity of snubber s of each type. The representa-tive sample should be weighted to include more snubbers from severe ser'vice areas such as near heavy equipment.

Snubbers placed in the same location as snubbers which failed the previous functional test shall be included in the next test lot if the failure analysis shows that failure was due to location.

nal m,

e.

Func n

ri The snubber functional test shall verify that:

l.

Activation (restraining action) is achieved within the specified range in both tension and compression.

2.

Snubber bleed, or release rate where required, is present in both tension and compression, within the specified range.

3.

Mhere required, the force required to initiate or maintain motion of the snubber is within the specified range in both directions of travel.

ST.

LUCIE - UNIT 2 3/4 7-22b Amendment No. 51,

4 SURVEILLANCE REgUIREHENTS (Continued) gaggagaagSSSSSSSSSSSSSSSSSSSSSSSSSSSSNSSSSSSSOSSSSSSSSSSSSOSSSSSSSSSSSS (Continued) 4.

For snubbers specifically required not to displace under continuous load, the ability of the snubber to withstand load without displacement.

5.

Fasteners for attachment of the snubber to the component and to the snubber anchorage are secure.

Testing methods may be used to measure parameters indirectly or parameters other than those specified if those results can be correlated to the specified parameters through established methods.

f.

i T t Fail An 1

An engineering evaluation shall be made of each failure to meet the functional'est acceptance criteria to determine the cause of the failure. The results of this evaluation shall be used, if applicable, in selecting snubbers to be tested in ae effort to detereine the OPERABILITY of other snubbers irrespective of type which may be subject to the same failure mode.

For the snubbers found inoperable, an engineering evaluation shall be performed on the components to which the inoperable snubbers are attached.

The purpose of this engineering evaluation shall be to determine if the components were adversely affected by the inopera-bility of the snubbers in order to ensure that the component remains capable of meeting the designed service.

If. any snubber selected for functional testing either fails to lockup or fails to move, i.e., frozen in place, the cause will be evaluated and if caused by manufacturer or design deficiency all snubbers of the same type subject to the same defect shall be functionally tested.

This testing requirement shall be independent of the requirements stated in Specification 4.7.9.e for snubbers not meeting the functional test acceptance criteria.

Snubbers which fail the visual inspection or the functional test acceptance criteria shall be repaired or replaced.

Replacement snubbers and snubbers which have repairs which might affect the-functional test result shall be tested to meet the functional test criteria before installation in the unit. These snubber s shall have met the acceptance criteria subsequent to their most recent service, and the functional test must have been performed within 12 months before being installed in the unit.

ST.

LUGIE - UNIT 2 3/4 7-23 Amendment No. 51,

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SURVEILLANCE REgUIREHENTS (Continued)

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSggggggggggggggggggggggggggggggggggggggg h.

The seal service life of hydraulic snubbers shall be monitored to ensure that the seals do not fail between surveillance inspections.

The maximum expected service life for the various seals, seal materials, and applications shall be estimated based on engineering information aacL the sea)s shall be replaced so that the maximum expected service life does not expire during a period when the snubber is required to be OPERABLE. The seal replacements shall be documented'nd the documentation shall be retained in accordance with Specification 6. 10.2.

m tion From i ual ns ecti n

r Fu i

n 1

T t Permanent or other exemptions from the surveillance program for individual snubbers may be granted by the Commission if a justifiable basis for exemption is presented and, if applicable, snubber life destructive testing was performed to qualify the snubber for the applfcab'le design conditions't etther ttte completion of tetr fabrication or at a suhsequent date.

ST.

LUCIE - UNIT 2 3/4 7-24 Amendment No. K, 51,