ML20082B974

Proposed Tech Specs Section 4.6.L for Unit 1 & Section 4.7.4 for Unit 2 Re Snubber Surveillance,Reflecting Present Guidance Proposed in Encl B of Generic Ltr 90-09, Alternate Requirements for Snubber Visual Insp Intervals..

ML20082B974
Person / Time
Site:	Hatch
Issue date:	07/11/1991
From:	GEORGIA POWER CO.
To:
Shared Package
ML20082B969	List: HL-1664, Application for Amends to Licenses DPR-57 & NPF-5,revising Unit 1 TS Section 4.6.L & Unit 2 TS Section 4.7.4 Re Snubber Surveillance to Reflect Present Guidance Proposed in Encl B of Generic Ltr 90-09 Re Snubber Visual Insp ML20082B974
References
GL-90-09, GL-90-9, NUDOCS 9107170216
Download: ML20082B974 (34)

Text

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ENCLOSURE 3 EDWIN 1. HATCH NUCLEAR PLANT - UNITS 1,2 NRC DOCKETS 50 321, 50 366 OPERATING LICENSES DPR 57, NPF-5 REQUEST TO REVISE TECHNICAL SPECIFICAT10flS:

REVISIONS TO SNUBBER VISUAL INSPECTION IN1ERVALS lif E CORDANCE WITH GENERIC LETTER 90 09 PAGE CHANGE INSTRUCTIONS The proposed changes to the Plant Hatch Units 1 and 2 Technical Specifications will be incorporated as follows:

PJLqq Instruetion Utill 1: iv Replace ix Replace 3.6-10a Delete 3.6-10b Delete 3.6-10c Delete 3.6 10d Delete 3.6-11 Replace 3.6 12 Replace 3.6.13 Replace 3.6.14 Replace 3.6.14a Add 3.6.14b Add UNIT 2: 3/4 7-11 Replace 3/4 7-12 Replace 3/4 7-13 Replace 3/4 7-14 Replate 3/4 7-15 Replace 3/4 7-16 Replace 3/4 7-17 Replace 9ya flIk"lEl()fsoom;,,

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ENCLOSURE 3 EDWIN 1. HATCH NUCLEAR PLANT UNITS 1,2 NRC 00CKETS 50 321, 50 366 OPERATING LICENSES DPR 57, NPF 5 REQJEST TO REYlSE TECHNICAL SPECIFICATIONS:

REVISIONS TO SNUBBER VISUAL INSPECTION INTERVALS IN ACCORDANCE WITH GENERIC LET'ER 90 09 PAGE CHAtiGE IRSTRUCTIONS The proposed changes to the Plant Hatch Units 1 and 2 Technical Specifications will be incorporated as follows:

fJLqt Instruction UNIT 1: iv Replace ix Replace 3.6-10a Delete 3.6-10b Delete 3.6 10e Deletu 3.6-10d Delete 3.6-11 Replace 3.6-12 Replace 3.6.13 Replace 3.6.14 Replace 3.6.14e Add 3.6.14b Add UNIT 2: 3/4 7-11 Replace 3/4 7-12 Replace 3/4 7-13 Replace 3/4 7-14 Replace 3/4 7-15 Replace 3/4 7-16 Replace 3/4 7-17 Replace

e IfillkB $til.lB litt 50RvilLLANCf fl0gl5(mlN11 ,,,

LIM 111NG (OND1110h5 IDP OtikAll0N f

4.6. PRIMARY $tSI(M 80uh0ARY 3.6 1 3.6. PRIMARY SYST(M BOUNDARY A. Reactor Coolant Heatup 3.6-1 A. Reactor Coolant Neatup and Cooldown and Cooldevn B. Reactor vessel temperature -

3.6-1 B. Reactor vessel temperature and Pressure and Pressure j l C. Reactor vessel Head $tud 3.6-2 l C. Reactor vessel Need $tud Tensioning )

lehtioning Idle Recirculation loop 3.6 ? f

9. Idle Retireviation loop D. '

5tartup Startup

(. Recirculation Pump Start 3.6 3

t. Recirculation Pump $ tert Reattor Coolart Chemistry F. Reactor Coolant Chemistry 3.6-4 f.

G. Reactor Coolant Leakage 3.6 1

6. Resttor Ctolant Leakage H. $4fety and Relief valves 3.6-9 1 H. Safety and Relief Valves )

1. Jet Pumps 3.6-4b

1. Jet Putros J. Rec trculation System 3,6 9c J. Recirculation System L. Structural Integrity 3.6 10

L. Structural Integrity L. $nubbers 3.6 11 l f L. Snobbert

! 1 a .1. CONTAINM[NT $T$l(M5 3.7-)

3.1. CON 1AINM(N1 $Y$1[M5 A. Primary Containment 3.1-1 A. Primary Containment B. $tandby Gas Treatment $rstem 3,7-10 B. $tandby Gas treatment System Secondary Containment 3,7 17 Secondary Containment C.

C.

D. Pt Imary Containment 3.7 13 D. Primary Containment f Isolation valves llolation valves a.6. RA010ACilvi MAftRIALS 3.B 1

! 3.8. RA010AC1tVE MAllRI AL$

A. Mittellaneous Radioactive 3.8 1 A.-Miscellaneous Radioactive Materials i urces Materials Sources a.9. AUXILIARY titCTRICAL 5t$1tM5 3.9-1 3.9. AU11LIARY (L(C1RICAL SY$1tM5 A. Aust11ery tiectrical 3.9-1 A. Reovirements for Reactor Systems toutpment 5tartuo l

iv Proposed 15/0a600/006-141 HATCH - ONlI I l

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Llll.F 18.011)

(ConiIuded) hhlt lillt fBf 5 nutter Vitust Intrettion interval 3.6 144 4.6 1 Primary Containment llo14 tion valvet which 3.7 16 3.1-1 Rettive a Primary (ontainnent llolation 5tgnal lettable Penetrations with Double 0 Ring stalt 3.7 21 3.1 2 lettable Penetrations with feitable Bellows 3.7-??

3.1 3 Primary Containment lettable isolation valven 3.7 ?)

3.7-4 fire Detectorn 3.13+t 3.13 1 fire Hole Statient 3.13 9 3.13-2 Radioactive Licuid Effluent Monitoring 3.14 7 3.14.1 1 Instrumentation Radioactive Cateout tffluent Monitoring 3.14-1 i 3.14.2 1 instrumentation Radioattive Licuid (ffluent Monitoring 3.14 4 4.14.1-1 Inttrumentation Lutweillance Recuirements

-4,14.7-1 Radioactive Galeoul Effluent Monitoring 3.14-11 Instrumentation surveillance f ecuirementt Radioactive Licuid Effluent sampling and 3.15 2 4.15.1 1 Analytil Program Radioactive Gaseous Waste Sampling and 3.1$ 10 4.11.F.1 Analysit Program Radiological invironmental Monitoring Program 3.16-4 3.16.1-1 3.16.1 7 Reporting levelt for Radioactivity Contentra- 3.16-1 tions in invironmental Samplet 3.16-0 4.16.1 1 lower Limit of Detettlen Minimum Shift Crew Composition 64 6.2.!-1 6.g.1.1-1 invironmental Radiological Monitoring Program 6-18 Summary 6.g.2-1 Special Reporting Requiremenit 6 19 L

1: Proposed 15/04600/066 129 MA1CH - Ohl1 1-l l

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- 1,111111NG iMDiljQN FOR OPEpATION  !

3.6.L. All snubbers

• shall be OP(RABl[. The only snubbers excluded from this requirement are those installed on non-safety 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.

APPLICABillfY: Conditions 1. ?, and L AC11M With one or more snubbers inoperable, within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> replace or restore the inoperablesnubber(s)toOP[RABL[statusandperformanengineeringevaluation per Specification 4.6,L.4. on the supported component or declare the supported l

-system inoperable and follow the appropriate limiting condition of operation l statement (s) for that system. )

$URVEILLANCEREOUIREMENTS 4.6.L. [ach snubber shall be demonstrated Op(RABLE by the performance of the following augmented inservice inspection program.

1. jnsoettien Typn f As used in the Specification, ' type of snubber" shall mean-snubbers  !

of the same design and manufacturer, irrespective of capacity.

~

R. Visual Inspections

$nubbers are categorized as inaccessible or accessible during reactor operation. Each of these categories (inaccessible and accessible) ,

may be inspected independently according to the schedule determined  !

by Table 4.6 1. The visual inspection Interval for each categcry of snubber shall b6 determined based upon the criteria provided in Table 4.6 1 and the first inspection interval determined using this  :

criteria shall be based upon the previous inspection interval as -

estabitshed by the requirements in effect before Amendment _ .

3. 11a al Inspection Acceptance Criteria the snubber has no visible Visual inspections indications shall of damage or verify impaired that (1)ILITY, (2) attachments to the OPCRAB foundation or supporting structure are functional, and (3) fasteners

- 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 classified as unacceptable and  ;

may be reclassified acceptable for the purpose of establishing the 4 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 t

i

• The applicable snubbers shall be identified in plant procedures.

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l 3 /4.6.L $NUGBERS

. $URVEllLANCLPIDulREdNTS (Centinuff 4.6.L.3. generically susceptible; and (2) the affected snubber is (Cont.) functionally tested in the as-found condition and determined OPERABLE per Specification 4.6.L.5 or 4.6.L.6. All snubbers found connected to an inoperable common hydraulic fluid reservoir shall be counted as unacceptable and may be reclassified as acceptab6, 'ar determining the next inspection interval provided that criterion (1) and (2) above are met. A review and evaluation shall be performed and documented to justify continued tperetton with an unacceptable snubber. If coetinued operation cannot be justified, the snubber shall be declat ., inoperable and the AC110N requirements shall be met.

4. Functional Tests At least once per operating cycle during shutdown, a representative sample of 10% of the total of each category (hydraulic or methinical) safety related snubber in use in the plant shall be function,liy tested either in place or in a bench test, for each snubber t.at does not meet the functional test acceptar.ce criteria of Specif t ation 4.6.l. 5. or 4.6.L.6. an additional sample of at least 1/2 the size of the initial lot of that category of snubber shall be functionally tested.

functional testing shall continue until no additional inoperable snubbers of a particular category are found within a sample or until all safety-related snubbers of that category have been functionally tested.

The representative sample selected for functional testing shall include the various configurations, operating environments and the range of size and capacity of snubbers. The representative sample shall be selected randomly frum the total population of safety-related snubbers. At least 25% of the snubbwrs in the representative sample shall include snubbers from the following three groups: l

1. The first snubber away from each reactor vessel nozzle,

2. $nubbers within 5 feet of heavy equipment (valve, pump, turbine, motor, etc.), and

3. Snubbers within 10 feet of the discharge from a safety-reitef valve.

Snubbers identified in plant procedures as 'Especially Difficult to Remove" or in 'High Radiation Zones During Shutdown' shall also be included in the representative sample *. The populations of

• Permanent or other exemptions from functiot,al testing for individual snubbers in those groups may be grantrd by the Conssission only if a justifiable basis l for exemption a 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.

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4 114.6.L. $NUEER$

. 1ER1LLIML1L0nELE11Litettlitsto safety-related hydraulic and safety-related mechanical snubbers may be used jointly or separately as the basis for the sampling plan.

In addition to the regular sample, snubbers placed in the same location as snubbers which failed the previous functional test shall be retested during the next test period. Test results of these snubbers shall not be included in the sampling plan.

If any snubber selected for functional testing either fails to lockup or f alls 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 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 compnnents supported by the snubber (s) were adversely affected by the inoperability of the snubber (s) in order to ensure that the supportso component rettains capable of meeting the designed service.

5. l!IEW11LIDutttrilWatl10M1311LlLitD11atLCL111t3 A lhe hydraulic snubber functional test shall verify that:

a. Activation (restraining action) is achieved within the specified range of velocity os acceleration in both tension and compression.

b. Snubber bleed, or release rate, where required, is within the specified range in compression or tension. For snubbert specifically required to not displace under continuoca load, the ability of the snubber to withstand load without displacement shall be verified.

6. tiestructL5avRer11unalltntlicilltttoinnstitiittia The mechanical snubber functional test shall verify that;

a. The snubber operates freely over the stroke in both tension and compression,

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

c. Activation (restraining actico) is achieved with the specified 4.a.gr vi ,clut ity ur euele# 4t tun in t>vth tera ton and compression.

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, )/4.6.l. $NUBBER$

$URVillL& MCI R[0UIRIMfNTS (Continued) ..

7. Snubber Service life Monitorina A record of the service life of each snubber, the date at which the ,

designated service life commences and the installation and I maintenance records on which the designated service life is based 1 shall be maintained as required by specification 6.10.2.n.

Concurrent with the inservice visual inspection performed during the first refueling outage following issuance of amendment 112 and at l )

least once per operating cycle 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 10% prior to the next scheduled snubber service life review, the snubber service 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 in the i records, i

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Table 4.6-1 1 RUM []LVISUAL INSPECTION 19T.LRYAL NUMBER.0f_.VNMCFPTABLE SWEERS ..

Population Column A Column B Column C or Category [xtend Interval Repeat Interval Reduce Interval LRg,t.es 1 and 2) (Notes 3 and 6) (Notes 4 and 6) (Notes 5 and 6) ,

1 0 0 1 80 0 0 2 100 0 1 4 1 150 0 3 8 200 2 $ 13 l 300 3 12 25 i

400 8 18 36  ;

l 500 12 24 48 1 750 20 40 78 l

1000 or greater 29 56 109 TABLE NOTATION 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 accessibility 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.

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 includes a fractional value of unacceptable snubbers as determined by interpolation.

Note 3: 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.

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a .

Table 4.6-1 (Continued) 1pBLE NOTATION (Cont.)

Note 4: If the number of unacceptable snubbers is equal to or less thanthe number in Column B but greater than the number in Column A, the next inspection interval shall be th: same as the previous interval.

Note 5: 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 interv11. However, if the number of unacceptable snubbers is less than the number in Column C but greater than the nember in Column B, the next interval shall be reduced proportionally by interpolation, that is, the previous intervai shall be reduced by a f actot that is one-third of the ratto 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 Definition !!., 3urveillance Frequency, are applicable for all inspection intervals up to and including 48 months, i

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4 ELANT SYSTEMS 3/4.7.4 SNUBBERS I

L]E11DlG_(0]DjT10N FOR OPERA 110N 3.7.4 All snubbers

• shall be operable. The only snubbers excluded from this requirement are those installed on non-safety 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, l

6PPLICABIL111: Conditions 1, 2, and 3.

6CT_LOJ:

With one or more 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 Specifcation 4.7.4.d on the supported component or declare the supported l system inoperable and follow the appropriate ACTION statement for that system.

SURVElllANCE RE0VIREMENTS 4.7.4 Each snubber shall be demonstrated OPERABLE by the performance of the following augmented inservice inspection program in addition to the requirements of Specificatior 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 Snubbers are categorized as inaccessible or accessible during reactor operation. Each of these categories (inaccessible and accessible) may be inspected independently according to the schedule determined by Table 4.7-1. The visual inspection interval for each category of snubber shall be determined based upon the criteria provided in Table 4.7-1 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 ___.

c. Visaal Inspection Acceptance Criteria 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) f asteners

• Tht applicable snubbers shall be identified in plant procedures. I HATCH - UNIT 2 3/4 7-11 K:\wp\techsp\H\3_4-7. pro \049-51

PLANT SYSTEMS-SURVEILLANCE RE0VIREMENTS (Continued)

I 4.7.4.c. for the attachment of.the snubber to the component and to the snubber (Cont.) 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 (1) the cause of the i i

rejecticn is clearly established and remedied for that particular i snubber and for other snubbers irrespective of type that may be generically :9sceptible; and (2) the affected snubber is functionally tested in the as-fo'Jnd condition and determined OPERABLE per i Specifications 4.7.4.e or 4.7.4.f. All snubbers found connected to  !

an inoperable common hydraulic fluid reservoir shall be counted as ~

unacceptable and may be reclassified as acceptable for determining-the next inspection interval, provided that criterion (1) and (2) '

above are met. A review and evaluation shall be performed and documented to justify continued operation with an unacceptable snubber. If continued operation cannot be justified, the snubber shall be declared inoperable and the ACTION requiremsnts shall be met.

d. Functiona_1_ Tests At least once per operating cycle during shutdown, a representative sample of 10% of the total of each category (hydraulic or mec;ianical) safety-related snubber in use in the plant 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 4.7.4.e or 4.7.4.f, an additional sample of at least 1/2 the size of the initial lot of that category of snubber shall be functionally tested.

Functional testing shall continue until no additional inoperable snubbers of a particular category are found within a sample or until all safety-related snubbers of that category have been functionally tested.

The repre:entative sample selected for functional testing shall include the various configurations, operating environments and the range of size and capacity of snubbers. The representative sample shall be selected randomly from the total population of safety-related snubbers. At least 25% of the snubbers in the representative sample shall include snubbers from the following three groups:

l

1. The first snubber away from each reactor vessel nozzle,

2. Snubbers within 5 feet of heavy equipment (valve, pump, turbine, motor, etc.), and HAiu.i - UNIT 2 3/4 7-12 K:\wp\techsp\H\3_4-7. pro \049-72

PL ANI__ SYSTEMS SURVEllt.ANCE R(QUIREMENTS (Continuedl l

3. Snubbers within 10 feet of the discharge from a safety relief valve.

Snubbers identified in plant procedures as "Especially Difficult to Remove" or in "High Radiation Zones During Shutdown" shall also be included in the representative sample *. The populations of safety-related hydraulic and safety-related mechanical snubbers may be used jointly or separately as the basis for the sampling plan.

In addition to the regular sample, snubbers placed in the so.ae location as snubbers which failed the previous functional test shall be retested during the next test period. Test results of these snubbers shall not be included in the sampling plan.

If any snubber selected for functional testing either fails to lockup or f ails 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 f r snubbers not meeting the functional test 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 snall 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 supported component remains capable of meeting the designed service,

e. Hydraulic Snubbers Functional Test Acceptance Criteria i

The hydraulic snubber functional test shall verify that:

1. Activ' tion (restraining action) is achieved within the specified rang of velocity or acceleration in both tension and compression.

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

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1 PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2. Snubber bleed, or release rate, where required, is within the specified range in compression or tension. For snubbers specifically required to not displace under continuous load, the ability of the snubber to withstand load without displacement shall be verified.

f. Mechanical Snubbers Functional Test Acceptance Criteria The mechanical snubber functional test shall verify that:

1. lhe srubber operates freely over the stroke in both tension and compression.

2. The force that initiates free mover.cnt of the snubber rod in either tension or compression is lees than the specified maximum drag force.

3. Activation (restraining action) is achieved within the specified range of velocity or acceleration in both tension and compression.

g. Snubber Service Life Monitorina A record of the service life of each snubber, the date at which the designated service life commences and the installation and maintenance records on which the designated service life is based shall be maintained as required by Specification 6.10.2.n.

Concurrent with the inservice visual inspection performed during the first refueling outage following issuance of amendment 51 and at l least once per operating cycle 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 10% prior to the next scheduled snubber service life review, the snubber service 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 changa to the service life of the snubber. This reevaluation, replacement or reconditioning shall be indicated in the records.

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v Table 4.7-1 SNUBBER VISUAL INEPECTION INTERVAL NUMBER OF UNACCEPTABLE SNUBDERS Population Column A Column B Column C .

or Category Extend Interval Repeat Interval Reduce Interval (Notes 1 and 2) (Notes 3 and 6) (Notes 4 and 6) (Notes 5 and 61 1 0 0 1 80 0 0 2 100 0 1 4 1

-150 0 3 8 200 2 5 13 300 5 12 25 400 8 18 36 l 500 12 24 48 1 750 20 40 78 1000 or greater 29 56 109 l TABLE NOTATION 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 accessibility 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.

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 includes a fracticnal value of unacceptable snubbers as determined by interpolation.

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lable 4.7-1 (Continued)

TABLE NOTATION (Cont.)

Note 3: 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.

Note 4: If the number of unacceptable snubbers is equal to or less than the number in Column 8 but greater than the number in Column A, the next inspection interval shall be the same as the previous interval.

Note 5: 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 unacceptable snubbers is less than the number in Column C but greater 1 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 inspection intervals up to and including 48 months.

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.Stqtion $tt91pn PAR 2 LIM 111NG'C6EDl110NS FOR OF(R ATION $URvilLL ANCE Rt0VIR[ MEN 15 )

3.6. PRIMARY SYSTEM BDUNDARY 4.6. PRlHARY SYSTEM BOUNDARY - 3.6-1 A. Reactor Coolant Heatup A. Reactor Coolant Heetup 3.6-1 and Cooldown and Cooldown Reactor vessel Temperature Reactor vessel Temperature B.

and Pressure B.

and Pre.o **

3.6-1 )

C. Reactor vessel Head Stud C. Reactor Vessel Head Stud 3.6-2 Tensioning lensioning D. Idle Recirculation Loop D. Idle Recirculation Loop 3.6-2 Startup Startup E. Recirculation Pump Start E. Recirculation Pump Start 3.6-3 F. Reactor Coolant Chemistry F. Reactor Coolant themistry 3.6-4

6. Reactor Coolant Leakage G. Reactor Coolant Leakage 3.6-1 H. Safety and Relief Valves H. Saf ety and Relief Valves 3.6-9

1. Jet Pumps 1. Jet Pumpt 3.6-9b J. Recirculation System J. Recirculation System 3.6-9c K. Structural Integrity K. Struc* ural Integrity 3.6-10 L. Snubbers L. Snubbers 3,.6(10a

'3.6-lI 3.1. CONTAINMENT SYSTEMS 4.7. CONTAINMENT SYSTEMS 3.7-1 A. Primary Containment A. Primary Containment 3.1-1 B. Standby Gas Treatment System B. Standby Gas Treatment System 3.1-10 C. Secondary Containment C. Secondary Containment 3.7-12 D. Primary Containment D. Primary Containment 3.1-13 Isolation Valves Isolation valves 3.8. RAD 10AC11vE MATERIALS 4.8. RAD 10 ACTIVE MATERIALS 3.8-1 A. Miscellaneous Radioactive A. Miscellaneous Radioactive 3.8-1 Materials Sources Material. Sources 3.9. AUXILIARY ELECTRICAL SYSTEMS 4.9. AUKILIARY ELECTRICAL SYSTEMS 3.9-1 A. Requirements for Reactor A. Auxiliary Electrical 3.9-1 5tartup Systems Equipment HATCH - UNIT I iv Amendment No. ff, 37, JIf, III. 141 h

i. . .

C -

LIST OF TABLES (Concluded) .

Table Title P_a_gt 1.t I S.~ w va,a t z,yun.. .zom / 3. G - N' 3.7-1 Primary Containment isolation Valves Which 3.7-16 Receive a Primary Containment isolation Signal 3.7-2 Testable Penetrations with Double 0-Ring Seals 3.7-21 3.7-3 Testable Penetrations with Testable Bellows 3.7-22 3.7 d 8-i uiry Containment Testable Isolation valves 3.7-23 3.13-1 Fire Detectors 3.13-2 3.13-2 Fire Hose Stations 3.13-9 3.14.1-1 Radioactive Liquid Effluent Monitoring 3.14-2 Instrumentation 3.14.2-1 Radioactive Gaseous Effluent Monitoring 3.14-7 Instrumentation 4.14.1-1 Radioactive Liquid Effluent Monitoring 3.14-4 Instrumentation Surveillance Requirements k Radioactive Gaseous Effluent Monitoring 3.14-11 4.14.2-1 Instrumentation Surveillance Requirements 4.15.1-1 Radioactive Liquid Effluent Sampling and 3.15-2 Analysis Program l

4.15.2-1 Radioactive Gaseous Waste Sampling and 3.15-10

( Analysis Program

3. l f. 1 -1 Radiological Environmental Monitoring Program 3.16-4 3.16.1-2 Reporting Levels for Radioactivity Concentra- 3.16-7 tions in Environmental Samples 4.16.1-1 LowerlimitofDetection 3.16-8

, - 6.2.2-1 Minimum Shift Crew Composition 6-4 6.9.1.7-1 Environme tal Radiological Monitoring Program . 6-18 Summary l' 6. 9 . 2 -1 Special Reporting Requirements 6-19 HA1CH - UNIT 1 ix Amendment No. 37, 50. EE. 22. 710.

JJ2, JJp,129

. . - .- - . . _ - . . - - . . - _ - ~. ..

3/4.6.L. SNUBBERS-LIMITING CONDITION FOR OPERATIO8f ,

3.6.L. All snubbers

• shall be OPERABLE. The only snubbers excluded from this requirement are those installed on non-safety related systems and then only if their f ailure or f ailure of the system on which

- they are installed would have no adverse of feet on any

( safety-related system.

APPLICABILITY: Conditions 1, 2, and 3.

ACTION: N f

f

-With one or more snubbers inoperable.jwithin 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 st tus and perfonn an engineering evaluation per Specification 4.6.L on the supported component or declare the supported system inoperable an follow the appropriate limiting condition of operation statement (s) for that system.

$URVEILLANCE REQUIREMENTS l

Micct A

\6.L. Each snubber shall be demonstrated OPERABLE by performance of the fol owing inservice inspection program.

L l 1. Visual inspections l \-

All\ safety-related snubbers shall be visually examined ,16 verify snubtso operability. Visual inspections shall be pe formed in

,.( accord (a e with the following schedule:

l No. Inopgrable Snubbers Spbsequent Visual t per Inso4ction Period Inspection Period **

O e 18 months + 25%

!- 1 12 months I 25%

. 2 / 6 months i 25%

3, 4 / 124 days 1 25%

5,6,7 8 or more. .

/ 62 days 31 days i 25%

i 255 The snubbers may be cate rized int xtwo groups: Those accessible and those inaccessibleAuring reactor beeration. Each group may be

. inspected independe Ty in accordance wit the above schedule.

t

2. Visual Inspecti Acceptance Criteria l

Visual inspec/tions shall verify (1) that there are no Nisible indicatiop( of damage or impaired OPERABILITY, (2) attalheents to

! the f oundation or supporting structure are secure, and- (3)Nqr -

l ( mechanical snubbers where snubb6r movement can be manually indyced, l

.( theAnubbers shall be inspected as follows: (a) At each refuelhtg,

/

• The applicable snubbers shall be identified in plant procedures.

\

%nspa.clion intervaljhalLaot-be-4engthened-more-then ene step-at-a HATCH - UNIT 1 3. 6-10a Amendment No. Ai, 112

. . g-( PS SURVEILLANCE REQUIREMENTS 4.6.L Each snubber shall be demonstrated OPERABLE by the performance of the following augmented inservice inspection program.

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

2. Visual Inspections Snubbers are categorized as inaccessible or accessible during reactor operation. Each of these categories (inaccessible and accessible) may be inspected independently according to the schedule determined by Table 4.6-1. The visual inspection interval for each category of snubber shall be determined based upon the criteria provided in Table 4.6-1 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 .

3. ylsual Inspection Acceptance Criteria Visual inspections shall verify thet (1) the snubber has no visible indications of damage or impaired OPERABILITY, (2) attachments to the foundation or supporting structure are functional, and (3) fasteners 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 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 is functionally tested in the as-found condition and determined OPERABLE per Specifications 4.6.L.5 or 4.6.L.6. All snubbers found connected to an inoperable common hydraulic fluid reservoir shall be counted as unacceptable and may be reclassified as acceptable for determining the next inspection interval provided that criterion (1) and (2) above are met. A review and evaluation shall be performed and documented to justify continued operation with an unacceptable snubber. If continued operation cannot be justified, the snubber shall be declared inoperable and the ACTION requirements shall be met.

3/4.6.L. $NUBBERS

-SURVEILLANCE REQUIREMENTS (Continued)

\ stems associated with the safety-related mechanical snubbers $ hail k)

(b inspected to detemine if there has been a severe dynamic,afent.

ntheeventofaseveredynamicevent,snubbersintpatsystem whic perienced the event shall be inspected during 'the refueling outage assure the snubbers have freedom of movement and are not frozen up. he inspection shall consist of verifyin'g freedom of motion usin ne of the following: (i) Manually induced snubber movement; (ii)Ntroking the mechanical snubber'through its full rangeoftravel.NLfoneormoremechanica)/snubbersarefoundtobe frozenupduringthkinspection,those,soubbersshallbereplaced (or overhauled) bef ore Te' turning to ppwer.

Re-inspection shall subsequently be performed acyordinpto the schedule of 4.6.L.1., but the scope of the examination shall be limited to the systems associated with the safety-re aled mechanical snubbers. Snubbers which appear inoperable as,a,)resul'tqf visual inspections may be detemined OPERABLE for,the purpose ofsestablishing the next visual inspection' interval, pr'oviding that (1)'the cause of the rejection is clearly establijWed and remedied f or thaharticular snubber and for other snubbprs that may be generically susceptible; and (2) the af fected snubber is functionally tested in the "as sfound" condition and determin'ed OPERABLE per Specification 4.6.L.4. cr s 4.6.L.S., as applicaple. However, if a hydraulic snubber is found Rcontain less l than,the required minimum volume of reserve fluid, the snubber shall be deJermined inoperable and cannot be determined OPERABLE via'fynctional

[tbstingforthepurposeofestablishingthenext.visualinspeciton interval.

[ )3I Functional Tests edyp ,

At least once per d u # e' U k J M th9n) a representative sample of 10% of the total of each fy~pf(hydraulic or mechanical) safety-related snubber in use it. the plant 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 4.6.L.f.S or 4.6.L.f.% an additional sample of at least 1/2 the size of the initial lot of that type-of snubber shall be functionally tested. d%g Functional testing shall continue until no additional inoperable snubbers of a particular ty e'are found within a sample or untti all safety-related snubbers of hat typ g e been functionally tested.

The representative sample c

cted sele for %

c%

functions ^l testing shall include the various configurations, operating environments and the range of size and capacity of snubbers. The representative sample shall be selected randomly from the total population of safety-related snubbers. At least 25% of the snubbers in the

3. 6-10b Amendment No. 37, 4 , IZZ, 134 HATCH - UNIT 1 _ ,

x_

~

3/4.6.L. SNUBBERS

( SURVEILLANCE REOUIREMENTS (Continued) representative sample shall include snubbers f rom the f ollowing three categoM es:

Nys

1. he first snubber away f rom each reac, tor v'essel hortle, k 2. Snubbers within 5 feet of heavy equipment (valve, pump, turbine, motor, etc.), and

3. Snubbers within 10 feet of the discharge f rom a

. safety-relief valve. .

( Snubbers identified in plant procedures as 'Especially Dif ficult to Remove' or in 'High Radiation Zones During Shutdown' shall also be included in the representative sample". The populations of safety-related hydraulic and safety-related mechanical snubbers may be used jointly or separately as the basis for the sampling plan, in addition to the regular sample, snubbers placed in the same location as snubbers which failed the previous functional test shall be retested during the next test period. Test results of these snubbers shall not be incicded in the sampling plan.

If any snubber selected for functional testing.either f ails 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 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 supported component remains capable of meeting the designed service.

Hydraulic Snubbers Fun:tional Test Acceptance Criteria The hydraulic snubber functional test shall verify that:

( ,

ff

• Permanent or otper exemptions from functional testing for individual snubbers in those cate964es-may be granted by the Comission only if a justifiable basis for exemption is presented ano/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.

HATCH ; UNIT 1 . 3.6-10c Amendment No. 77, IY,112 i .

9 I

_________L_

, F4.6.L. $NUBBQ[

SURVElllANCE REOUIREMENTS (Continued) }

a. Activation (restraining action) h achieved within the specified range of velocity or acceleration in both tension and compression.. *

b. Snubber bleed, or release rate, where required, is within the ,

)

specified range in compression or tension. For snubbers specifically required to not displace under continuous load, the ability of the snubber to withstand load without displacement shall be verified.

(,,jiI. !!echanical Snubbers Functional Test AcceDtance Criteria The mechanical snubber functional test shall verify t*nat:

a. The snubber operates f reely over the stroke ir both tension and compression.

- b. The force that initiates f ree movement of the snubber rod in either tension or'ce'npression is less than the specified maximum drag force.

c. A:tivation (restraining action) is achieved with the specified range of velocity or acceleration in both tension and compression.

' '~

7utane Inaccessible Snubber Inspection __.

x In the event that alt 1naccessible-snubtfrs are inspected, functionally tested, and repaired a bnecesTary-during a unit outage, and that it is thus demonstrgted-tha't all inaccessibfe'snubbets are operable, the schedgly-it1"$pecification 4.6.L.1. may be re-enfered-ond 6-month N ~,s f ins)6ction interval for the inaccessible snubbers.

/

7. Enubber Service life Monitorina A record of the service lif e of each snubber, the date at which the designated service life commences and the installation and maintenance records on which the designated *.ervice life is based shall be maintained as required by Spegification 6.10.2.n.

cc>p a. Ann 47G' C Concurrent with i e inservice visual inspection perfort ed duringhg,,f/2.

first refueling o tage following issuance of 4has. amendment'and at least once per aths 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 10% prior to the next scheduled snubber service life review, the snubber service life shall be reevaluated or the snubber shall be replaced or reconditioned so as to extena its service life beyond the

• g 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 reconditioninq shall be indicated in the records.

3.6-10d Amendment No. M . M .112 HATCH - UNIT 1 .

- - - - - - -- -..._.m_____ .,

lg'.> @

Table 4.6-1 SN@BER VISUAL INSPECTION INTERVAL NUMBER OF UNACCEPTABLE SNUBBEB.S ,

Population Column A Column B Column C or Category Extend Interval Repeat Interval Reduce Interval (Notes 1 and 2) (Notes 3 and 6) (Notes 4 and 6) (Notes 5 anL Q1 1 0 0 1 80 0 0 2 100 0 1 4 150 0 3 8 200 2 5 13 300 5 12 25

~

400 8 18 36 500 12 24 48 750 20 40 78 1000 or greater 29 56 109 TABLE NOTATION 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 accessibility 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,

jgfT~l Igble- 4.6-1 (Continued)-

TABLE NOTATION

-Note.2: Interpolation between population or category sizes and' the number of unacceptable snabbers 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.-

Note 3 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.

Note 4:' 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. 4 Note 5: 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 unacceptable 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 8 to the, difference in the numbers in Columns B and C.

Note 6: The provisions of Definition II., Surveillance frequency, are applicable for all- inspection intervals up to and including 48 months.

4 4

f

- # y, y w

g, PLANT SYSTEMS 3/4.7.4 SNUBBERS LIMITING-CONDITION FOR OPERATION

( 3'.7.4 All snubbers

• shall be operable. The only snub'sers excluded from this requirement are those installed on non-safety relates systems and then only if their failure or failure of the system on whicF they are installed would have no adverse ef fect on any safety-related sy*,cem.

APPLICABILITY: Conditions 1, 2, and 3

(

ACTION: h With one or more snubbers inoparable, thin 72 nours replace or restore the inoperable snubber (s) to OPERABLE st tus and ptrform an engineering evaluation per Specification 4.7.4. on the '.apported component or declare the supported system inoperable and follow the appropriate ACTION statement for that system.

SURVEILLANCE REQUIREMENTS t Each snubber shall be demonstrated OPERABLE by performance of he

%11owinginserviceinspectionprogramandtherequirementsofSp,e.c4 cation 4 .'O 5 .

Visual Inspections

/

AT safety-related snubbers shall be visual)y' examined to verify N { Qer operability.

snuo Visual inspections shall be performed in accord nce with the following schedule-No. goperable Snubbers Subsequent Visual per Irtspection Period Inspection Period **#

f' .18 months + 25%

1 12 months + 25%

2 6 months T 25%

3, 124 days ~+ 25%

5 ,, , 7 62 days + 25%

8'or more 'N 31 days i 25%

k

/ s'N s The snubbe,rt may be categorized iiitq two groups: Those accessible and those inaccessible durir.g reactorsoperation. Each group may be inspect'ed independently in accordance Q1th the above schedule.

"The applicable snubbers shall be identified in plant procedures.

MtnHepactign_ interval shall not be lengthengd mnre than one-step-u

1. he yhtcrrs'6TTpec'ificat on 4.0.2 are notTp7 tea )

HATCH - UNIT 2 3/4 7-11 Amendment No. 51

iar V'

SVRVEILLANCE REQUIREMENTS 4.7.4 Each snubber shall be demonstrated OPERABLE by the performance of the following augmented inservice inspection program in addition to the requirements of Specification 4.0.5

a. .laspection Types 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 categories (inaccessible and accessible) may be inspected independently according to the schedule determined by Table 4.7-1. The visual inspection t

I interval for each category of snubber shall be determined based upon the criteria provided in Table 4.7-1 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 .

c. Visual Inspection Acceptance Criteria 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) fasteners 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 classified as unacceptable and may be l reclassified acceptable for the purpose of establishing the next l 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 is functionally tested in the as-found condition and j determined OPERABLE per Specifications 4.7.4.e or 4.7.4.f. All  ;

snubbers found connected to an inoperable common hydraulic fluid I reservoir shall be counted as unacceptable and may be reclassified as acceptable for determining the next inspection interval provided that criterion (1) and (2) above are met. A review and evaluation shall be performed and documented to justify continued operation with an unacceptable snubber. If i continued operation cannot be justified, the snubber shall be declared inoperable and tha ACTION requirements shall be met.

l t

C L ,

j , .. - -

\;

A i PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) p

. Visual Inspection Acceptance Criteria Visual inspections shall verify (1) that there are no visibl.e (dications of damage or impaired OPERABILITY, (2) attachments )

to\the foundation or supporting structure are secure, and'(3) for%echanical snubbers where snubber movement can b,e fiianually induchtt, the snubbers shall be inspected as followst (a) At -

each refueling, systems associated with the safety'-related mechanica'issnubbers shall be inspected to deterdine if there i has been a tevere dynamic event.

dynamic event \, snubbers in that(b) In thwhic/e ivent of a severe system experienced the event shall be in{pected during the refue)ing outage to assure the snubbers have freedom of movement a @ are not frozen up.

The inspection shall\qonsist of verifyfng freedom of motion using one of the folloking: (1) Manda11y induced snubber movement; (ii) stroking ,the mechapi' cal snubber through its full range of travel. If %ne orAnore mechanical snubbers are found to be froi.' up durin %this inspection, those snubbers shall be replaced u . %d before returning to power.

Re-inspection shall subsequs.. dys)be performed according to the schedule of 4.7.4.a. butythe scop'exof the examination shall be limitedtothesystemsfassociatedwiththesafety-related mechanical snubbers./ Snubbers which apqear inoperable as a result of visual 1pspections may be determined OPERABLE for the purpose of establishing the next visual inspection interval, provJding that (1) the cause of th clearly esta.b11shed and remedied for that rttquiar pa\ rejection snubber is and for othsr snubbers that may be generically sb (ceptible; and (2) ,th's affected snubber is functionally testens in the "as found"ycondition and determined OPERABLE per Specif tb4 tion 4.7.A.d or 4.7.4.e. as applicable. However,ifahydrylicsnubber is/found to contain less than the required minimum volum rsservefluid,thesnabbershallbedeterminedinoperablgof e gnd l

/cannot purposebe determined of establishingOPERABLE viainspec.

the next visual functional tion interval. testing for thb

g. '4 Functional Tests 'b 76 cecu nw fypE Mi ,

At least once per -18mnth& Gut ng i shutdown,Ea representative sample of 10% of the total of each type (hydraulic or mechanical) safety related snubber in use in the plant shall be functionally tested either in place or in a bench test. g r

For each snubber that does not meet the func6r4.7.4./,an ional tc.st '. /

acceptance criteria additional sample ofleast of at Specificat,on 1/2 the size4.7.4, o f the initial lot of that type-of snubber shall be functionally tested.

, y l

HATCH - UNIT 2 3/4 7-12 Amendment No. 51, 72

PLANT SYSTEMS

' SURVEILLANCE REQUIREMENTS (Continued)

Functionaltestingshallcon[inue t no additior al inoperable snubbers of a particular type are found within a sample or until all safety-related snubbers of that type have been functionally tested.

N9 The representative sample selected for functional testing shall

-include the various configurations, operating environments and the range of size and capacity of snubbers. The representative sample shall be selected randomly from the total population of safety-related snubbers. At least 25% of the snubbers in the representative sample shall include snubbers from the following three categeM es:

, gwf s

( 1, The first snubber away f rom each reactor vessel nozzle,

2. Snubbers within 5 feet of heavy equipment (valve, pump, turbine, motor,etc.),and

3. Snubbers within 10 feet of the discharge from a safety relief valve.

Snubbers identified in plant procedures as "Especially Difficult to Remove" or in "High Raaiation Zones During Shutdown" shall also be included in the representative sample *. The populations of safety related hydraulic and safety-related mechanical snubbers may be used jointly or separately as the basit for the sampling plan.

I In addition to the regular sample, snubbers placed in the same location as snubbers which failed the previous functional test shall be retested during the next test period. Test results of these snubbers shall not be included in the sampling plan. .

If any snubber selected for functional testing either fails to lockup or f ails to move, i.e. , f rozen 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 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 snubbar(s) in order to ensure that the supported component remains capable of meeting the designed service.

(_. ,~ g'~rs .

• Perma'nent or ottyer exemptions from functional testing for individual snubbers in those categoNu may be granted by the Commission only if a 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 completica of their fabrication or at a subsequent date.

HATCH - UNIT 2 3/4 7-13 Amendment No. 51 I

c .

s

~

.~

l t i

PLANT SYSTEMS

}

SURVEILLANCE REQUIREMENTS (Continued) c [ Hydraulic Snubbers Functional Test Acceptance Criteria j The hydraulic snubber functional test shall verify that: } l

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. For snubbers specifically required to not displace under 1 continuous load, the ability of the snubber to withstand load without displacement shall be verified.

[j[. Mechanical Snubbers Functional Test Acceptance Criteria l

The mechanical snubber functional test shall verify that:

1. The snubber operates freely over the stroke in both tension and compression.

2. The force that initiates free movemert of the snubber rod s in either tension er compression is less than the i specified max'imum drag force.

3. Activation (restraining action) is achieved within the i specified range of velocity or acceleration in both tension and corrpression, t%taae Inaccessible Snubber Inspection In the even M acatssikle-sh inspected, functionally tested, and Jepa % d-as necessary during a unit outage, and that,it-is'thus demonstrateethaQ1 inaccessible snubbers arpoperable, the schedule in Specificatto 7.4.a may b pre intered c;n a 6-month inspection interval for t e -

ina(cessible snubbers.  !

g. Snubber Service Life Monitoring A record of the service life of each snubber, the date at which the designated service life commences and the installation and maintenance records on which the designated )

serv, ice life is based shall be maintained as required by Specification 6.10.2.n.

l

[ )

HATCH - UNIT 2 3/4 7-14 Amendment No. 51 l .

- " PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

(cromarm cydee Concurrent with the inservice visua) inspection performed

(. .

during the first refueling outage /ollowing issuance of tM+-

amendmenf and at least once per le anth: thereafter, the insta))ttion and maintenance records for each safety-related snuWer shall be reviewed to verify that the indicated service I life has not been exceeded or will not be exceeded by more than 10% prior to the next scheduled snubber service life l review. If the indicated service life will be exceeded by I

(~ g) more than 10% prior to the next scheduled snubber service life j review, the snubber service life shall be reevaluated or the l 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. Thi s i reevaluation, replacement or reconditioning shall be indicated '

in the records.  ;

a'

\

(

t I' HATCH - UNIT 2 3/4 7-15 Amendment No. 51 l

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litble 4.7-1 SNVBBER VISUAL INSPECTION INTERVAL NUMBER OF VNACCEPTABLE SNVBBERS Population Column A Column B Column C or Category Extend Interval Repeat Interval Reduce Interval (Notes 1 and 2) (Notes 3 and 6) (Notes 4 and 6) (Notes 5 and 6) 1 0 0 1 80 0 0 2 100 0 1 4 13 0 0 3 8 200 2 5 13 300 5 12 25 400 8 18 36 500 12 24 48 750 20 40 78 1000 or greater 29 56 109 TABLE NOTATION 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 accessibility 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, i

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lable 4.7-1 (Continued)

TABLE NOTATION 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 includes a fractional value of unacceptable snubbers as determined by interpolation.

Note 3: 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 15 1 48 months.

Note 4: 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.

Note 5: 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 unacceptable snubbers is less than the number in Column C but greater than the number in Column B, the next interval shall be redcced proportionally by interpolation, that is, the previous interval shall be reduced by a factor that is one-third of the ratto 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: ite provisions of Specification 4.0.2 are applicable for all intpection intervals up to and including 48 months.

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