ML20099F078
| ML20099F078 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/05/1992 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20099F073 | List: |
| References | |
| NUDOCS 9208120111 | |
| Download: ML20099F078 (13) | |
Text
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t ATTACIIMENT 2 1
PEACH 'sOTTOM ATOMIC POWER STATION UlJITS 2 AND 3 Docket Nos, 30-277-50-278
'icense Nos. DPR-44 s
DPR-56 TECilNICAL SPECIFICATION CilANGES List of Attached Pages l
Units 2 and 3 via-234a d
234b 234t 234u 236a 9200120111 920805 PDR.ADOCK 05000277 P
Unit 2 g' -
PBAPS LIST ')F TABLES T_able.
Title g
4.8.3.c Maximum Values for Minimum Detectable 216d-6 Levels of Activity 4.11.0-1 Snubber Visual Inspection Interval 234t 3.14.C.1 fire Detectors 240k 4
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_ Table Titic Page 4.8.3.c Maximum Values for Minimum Detectable 216d-6 Levcit uf -Acth!!y t
4.11.0-1 Snubber Visual Inspection Interval 234t 3.14.C.1 Fire Detectors 240L f
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f Unit 2 PDAPS L
. 11HITlHGCONDITIONSFOROPERATION SURVElttANCE REQUIREMENTS 3.11.0 4.11.0 Shock Suppressors (Snubbers)
ShockSuppressors(Snubbers) cn Safety Related Systems on Safety Related Systems 3.11.0.1 4.11.0.1 During all modes of operation Snubbers required to be all snubt,ers on safety-related operable under the provisions systems shall be operable except of 3.11.D.1 shall be demonstrated as noted in 3.11.D.2 and 3.11.D.3 OPERABLE by performance of the below. Snubbers on non-safety related following augmented inservice systems are excluded from this requirement inspection program and the if their failure or failure of the requirements of Specification 4.6.G.
system on which installed has no adverse effect on a safety-related system.
. 3.11.0.2 4.11.D.2
~During operation in the cold Snubbers required to be shutdown or refueling modes, snubbers operable under the provisions located on systems required to be of 3.11.D.1 shall be visually operable shall be operable except inspected according to the as noted in 3.11.0.3.
schedule determined by Table 4.11.0-1.
The visual inspection 3.11.0.3 interval for each category shall be detennined based upon
. ith one or more snubbers criteria provided in Tabic 4.11.0-1 W
inoperabic under the requirements and the first inspection cf 3.11.D.1, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, replhce interval determined by using cr restore the inoperable' snubber to this criteria shall be based upon the operable status and perfonn an the previous inspection interval cngineering evaluation per as established by the requirements specification 4.11.D.6.
If these in effcct before amendment (NRC rcquirements'cannot;be met, declare the will include the number of license 1
supported. system inoperable and amendmentthatimplementsthischange).
~ follow the' applicable-Limiting Condition for Operation'for that System.
Snubbers may be categorized in two groups, "occessible" or " inaccessible", based on their accessibility for inspection during reactor operation. These two groups may be inspected independently according to Table 4.11.0-1.
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Unit 3 PBAPS I
_LMITINGCONDITIONSFOROPERATION SURVEILLANCE REQUIREMENTS
'3.11.0 4.11.0 "ShockSuppressors(Snubbers)
ShockSuppressors(Snubbers) cn Safety Related Systems on Safety Related Systems 3.11.D.1 4.11.D.1 During all modes of operation St.ubbers required to be all snubbers on safety-related operable under the provisions systems shall be operable except of 3.11.D.1 shall be demonstrated as noted in 3.11.D.2 and 3.11.D.3 OPERABLE by perfomance of the
-below. -Snubbers on non-safety related following augmented inservice systems are excluded from this requirement inspection program and the if their failure or failure of the requirements of Specification 4.6.G.
system on which installed has no adverse effect on a safety-related
' system.
.3.11.D.7 4.11.D.2 During operation in the cnld Snubbers required to be shutdown or refueling modes, snubbers operable under the provisions 1 cated on systems required to be of 3.11.D.1 shall be visually operable shall be operabic except inspected according to the as noted in'3.11.D.3.
schedule determined by Table 4.11.0-1.
The visual inspection 3.11.D.3 interval for each category shall be determined based upon With one or more snubbers criteria provided in Table 4.11.0-1 inoperabic under'the requirements
'and the first inspection of 3.11.D.1, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, replace interval determined by using
. cr restore the inoperabic snubber to this criteria shall be based upon the operabic status and perform an the previous inspection interval cngineering evaluation per as established by the requirements specification 4.11.D.6. ~If these in effect before amendment-(HRC-
'r:quirements cannot be met, declare the will include the number of license supported system inoperable and amendmentthatimplementsthischange).
follow the-applicable Limiting Condition for Operation for that System.
i Snubbers may be categorized in two groups,
" accessible" or " inaccessible", based on their accessibility for inspection -
during reactor operation. These two groups may be inspected independently according to Table'4.11.0-1.
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- 1 MITING CONDITIONS FOR OPERATION SURVEll.tANCE REQUIREMENTS 4.11.D.3 Visual inspection of snubbers required to be operable under the provisions of 3.11.D.1 shall verify that 1) there are no indications of damage or impaired operability,2)uttachmentstothe foundations or supporting structure are functional, and 3) fasteners for the attachment of the snubber to the component and to the snubber anchorage ane functional.
Snubbers which appear to be inoperable as a result of visual inspections shall be classified as unacceptabic and may be reclassified acceptable for the purpose of establishing the next visual inspectioninterval,providingthat1) the cause of the rejection is clearly established and remedied for that particular snubber and for other generically susceptible snubbers; and 2) the affected snubber is functionally tested in the as found condition and determined operable per Specification 4.11.D.7 or L il.D.8, as applicable. All snubbers found connected to an inoperable comon hydraulic fluid reservoir shall be counted as-unacceptable for~ determining the next inspection interval. A review
.and evaluation shall be perfonned and documented to justify continued optration with an unacceptable snubber.
If continued operation cannot be justified, the snubber shall be declared faoperable and the Limiting Conditions for 0peration shall be met.
4.11.0.4 Functional 'lest a) Once each operating cycle, during shutdown, a representative sample of 10%
of each type of (mechanical or hydraulic) snubber required to be operable under the provisions of 3.11.D.1 shall be functionally tested either in place or in a bench test.
For every unit found to be inoperable an additional 10% of that type of snubber shall be functionally tested until no rm a failures are found or all snubbers of that type have been tested..The functional test requirements for mechanical
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Unit 3 hlTINGCONDIT10h5FOROPERATlvH SURVEILLANCE REQUIREMENTS 4.11.0.3 Visual inspection of snubbers required to be operable under the provisions of 3.11.0.1 shall verify that 1) there are no indications of damage or impaired operability 2) attachments to the foundations or supporting structure are
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functional, and 3) fasteners for the attachment of the snubber to the component and to the snubber anchorage are f unctional.
,o Snubbers which appear to be inoperable as a result of visual inspections shall be classified as unacceptabic and may be r
reclassified acceptable for the purpose of establishing the next visual inspection interval, providing that 1) the cause of the rejection is c1carly established and remedied for that particular snubber and for other genericallysusceptiblesnubbers;and2) the affected snubber is functionally tested in the as found condition and determined operable per Specification 4.11.0.7 or 4.11.D.8, as applicable. All snubbers found connected to an inoperable conuon hydraulic fluid reservoir shall be counted as unacceptable for determining the next inspection interval. A review l
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 iroperable and the Limiting Conditions for Operation shall be met.
4.11.0.4 Functional Test
-a)Onceeachoperatingcycle,during shutdown, a repre.sentative sample of 10%
ofeachtypeof-(mechanics 1or. hydraulic) snubber required to be operab'.e under the U
provisions of 3.11.0.1 shall be functionally tested etther in place or in
- a. bench test.
For every unit found to be inoperable an additional.10% of that type of snubber shall be functionally tested until no more failures art found or all snubbers of that type have-been tested. The functional test requirements for mechanical 4
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Unit 2 I
TABLE 4.11.0-1 SNUBBER VISUAL INSPECTION INTERVAL NUMBER Of UNACCEPTABLE SNUBBERS i
Population Glumn A Column B Column C cr Category Extend Interval Repeat Interval Reduce Interval (Notes 1-and 2)
(Notes 3 and 6)
(Notes 4and6)
(Notes 5 and 6) i 1
0 0
1 l
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 N;te 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 op2 ration, 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 ncxt inspection interval for that category.
N;te 2:
Interpolation between population or category sizes and the number of unacceptable snubbers is permissible. Use r. ext 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 rrths.
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 pre,tc,os iriterval.
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Unit 3 TABLE 4.11.0-1 SNUBUER VISUAL. INSPECTION INTERVAL i
NUMBER Of UNACCEPTABLE SNUBBERS Population Tolumn A Column B Column C cr Category Extend Interval Reper.t Interval Reduce Interval (Notes 1 and 2)
(Notes 3 and 6)
(Notes 4and6)
(Notes 5and6) 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 greaker 29 56 109 i
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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 vay be categorized, based upon their' accessibility during power operation. as accessible or ineccessible. These categories may be ' examined separately orl 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 cctegory.
Note 2:- Interpolation between population or category sizes ared the number of unacceptable snubbers is pennissible. Use next lower integer for the value of the limit for Columns A, B, t,r C if-that integer includes a fractional value of unacceptable snubbers as detennined by interpolation.
' Note 3:- If the number of unacceptable snubbers is equal to or less than the number ir.Tolumn 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.
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Unit 2
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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,Lif 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 diff erence between the number of unacceptable snubbers found during the previous interval and the number in Culumn B to the difference in t'ne
/a,
. numbers in Columns B and C.
Note 6:1.The provisions.of Section 1.0 (" Definitions") are
" applicable for all; inspection intervals up to and
. including 48 months.-
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-Note 5:
If-the number of unacceptable snubbers is equal to or -
{
greater than the number in Column C, the next inspection i
interval shall be two-thirds of the previous interval, flowever, if the number of unacceptabic 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.
1 Note 6:. The provisions of Section 1.0 (" Definitions") are applicable for all inspection' intervals up to and including 48 months.
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Unit 2 PBAPS 9
4.11 UASES B.
Alternate ficat Sink _f :ility No surveillance requirement othe. than a monthly level check is expressed for the alternate heat sink since the associated equipment surveillance testing is conducted as required by Specification 3.9.
C.
En.crgency Shutdown-Control Panels Once per week verification of_ the panels being properly secured is considered auequate. The associated equipment is proven operable during sarveillance testing of that equipment. An operability verification by i
electrical test at each refueling outage is adequate to assure that the panels ar^ available and can perform their design function.
D.. Shock Suppressors (Snubbers) on Safety Related Systems All safety related snubbers shall be, as a minimum, visually inspected to verify that (I) the snubber has no visible indications of damage or impaired operability, (2) attachments to the foundation or supporting structure art functional, (3) fasteners f ar the attachment of the snubber to the component and to the snubber anchorage a.: Junctional, and (4) proper hydraulic fluid level for hydraulic snubbers.
4..ubbers are categorized into two groups,
" accessible" or " inaccessible", based on their accessibility for inspection during reactor operation and drywell inertment. As discussed in Generic Letter 90-09, " Alternative Requirements for Snubber Visual Inspecti n i
Intervals and Corrective Actions", the method for determining the next interval for the visual inspection.cf snubbers is provided based upon the number of unacceptable snubbers found during the previous inspection, the total population or category: size and the previous inspection interval. A snubber is considered unacceptable if it fails.to satisfy the acceptance criteria-of the visual insnection. Snubbers may be categorized, based upon their_ accessibility during power operation, as accessible or inaccessible.
These categories may be_ examined separately or hintly.
Inspections performed before that' interval has elapsed may be used as a new reference point to; determine the next inspection. However, the results of such early inspections will only be used to shorten the required interval and not to lengthen it.
When a snubber is fou ad inoperable an engineering evaluation is performed to determine (a) snubbef mode of failure and, (b) if there is any adverse effect or degradation or. the supported piping or equipment due to the
-failure.
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To further increase the assurance of snubber reliability, functional tests will be performed once each operating cycle.
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Unit 3
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P8APS
-i L4.11; BASES t
B.' Alternate Heat Sink Facility 4
'No-surveillance requirement other tnan a monthly level check is expressed for:the alternate heat-sink since the associated equipment surveillance j
q testing is conducted as. required by Specification 3.9.
L C.
Emergency Shutdown-Control Panels
'Once per week-verification of the panels being properly-secured is t
considered adequate. The associated equipment is proven operable during surveillance testing of that_ equipment. An operability verification by
- electrica1 Liest at each refueling outage is adequate:to assure that the panels are available and can perform their design function.
D.
Shock:Surpressors (Snubbers) on Safety Related Systems
. All safety related snubbers shall oe, as a minimum, visually inspected to
- verify that:(1) the snubber has no visible indications of damage or impaired
. operability. (2) attachments to the foundation-or supporting structure are
- functional, (3) fasteners _ for the attachment of the snubber to the component and to the snubber anchorage are functional, and.(4) proper hydraulic fluid.
Llevel for hydraulic snuht,ers. Snubbers are categorized into two groups.
"- accessible" or " inaccessible",, based on their accessibility for inspection during reactor: operation and drywell.inertment. As discussed in Generic p
- Letter 90-09,
- Alternative-Requirements for Snut ber Visual Inspection
-Intervals and' Corrective Actions",; the method. for determining. the next'-
interval-for the visual inspection.of-snubbers is provided based upon the Lnumber of unacceptable: snubbers found during the provioN inspection. the
- total-population or category-size and -the! previous inspection interval. A
. snubber 1siconsidered unacceptable if41t fails to satisfy the acceptance criteria of.theLvisualLinspection. ' Snubbers'may be categorized, based upon their accessibility during power operation, as accessible or inaccessible.
These categories may be examined separately or jolatly.
Inspections
_ perfonned beforet that interval: has elapsed may be used as a new reference
- pointito' determine the next inspectlon..However the results of.such early 11nspections: will-only-be used to shorten the' required interval'and not to lengthen it.. -
~When a snubber 's found inoperable-an engineering evaluation is performed to 3"
?detennine L(a) snubber mode of failure and, (b) if there is any edverse J erfect;or; degradation _on'the supported p_iping or equipment due.to the 1
Lf3 1ure.
a To further increase the assurance of snubber reliability, Tunctional tests M 11 be performed once each operating cycle.
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