ML20090B366
| ML20090B366 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 02/24/1992 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML20090B338 | List: |
| References | |
| NUDOCS 9203030351 | |
| Download: ML20090B366 (10) | |
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ATTACHMENT 2 REQUEST FOR LICENSE AMENDMENT SNUDDER VISUAL INSPECTION INTERVALS i
FACILITY OPERATING LICENSE NPF-57 HOPE CREEK GENERATING STATION DOCKET NO. 50-354 I
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9203030351 920224 PDR ADOCK 05000354 P
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!UR-N91320 HOPE CREEK I.CR 91-18 TECHNICAL'SPEQlf1 CATION PAGES WITH PEN AND INK CHANGES The following Technical Specifications for Facility Operating License No. NPF-57 are effected by this license amendment request:
Technical Specification Eagg 4.7.5 3/4 7-13 3/4 7-14 TABLE 4.7.5-1 NEW BASIS 3/4.7.5 B 3/4 7-2
4 PLANT SYSTEMS 3/4.7.5 SNUBBERS LIMITING CONDITION FOR OPERATION 3.7.5 All snubbers shall ta OPERABLE.
APPLICABILITY:
OPERATIONAL CONDITIONS 1,2, and 3.
OPERATIONAL CONDITIONS 4 and 5 for snubbers located on systems required OPERABLE in those OPERATIONAL CONDITIONS.
ACTION:
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 Specification 4.7.5.g on the attached component or dtclare the attached system inoperable and follow the appropriate ACTION statement for that system.
SURVEILLANCE REQUIREMENTS 4.7.5 Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program and the requirements of Specification 4.0.5.
a.
Inspection Types As used in this specification, type of snubber shall mean snubbers of the sane design and manufacturer, irrespective of capacity, b.
Visual Inspections "f9 N"5 Snubbers are categorized as,jnagessible or accessible during reactor operation.
Each of these gr=p; tinaccessible and accessible) may be p
inspected independently according to the schedulelbeJovi. The f1r insyvice vjstdil insppet1on of.ach type snub 3er'shall be formed
,after 4gnths b)u 4ithin nths pf commepc4hg powerJ ation and sha W includ Tl snubb IfjM snubbers of each ype are fou A
AfERABLE ring
-first Jsefvice yisfal inspe
'on, the se i
-ins ce vis nspecJitrn shalj Xe performgd' t the fir refuelin y
- age, rwise A sequ pe4 isual in etions sha e perfor 4 in a dancepththe Mowing sched e:
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HOPE CREEK 3/4 7-13
NIR-N91220 llOPE CREEK ICR 91-18 INSERT FOR SPECIFICATION 4.7.5 b.
PAGE 3/4 7-13:
... determined ~by Table 4.7.5-1.
The visual inspection interval-for-each type of snubber shall-be determined based upon the criteria provided in Table 4.7.5-1 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 (insert amendment number].
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PLANT' SYSTEMS
-SURVEILLANCE REQUIREMENTS (Continued)
A~'
No. Inope
~e Snub r's
/
of Each pe per Subseqqeht Visual Inspe.
on Perio Inspe,etion Peri d*#
f.-
f 0
18Aonthsi2,5%
2 months + 5%
2 6 month 1 25%
3,4 124 day 1 25%
5 62 d3 1 25%
N 8[,6 /
31/aysi25%
[
more-c.
Visual Inspection Acceptance Criteria Visual inspections shall verify (1) that there are no visible indications-of-damage or impaired 0PERABILITY, (2) attachments to
,o} j the foundation or supporting structure are secure, and (3) fasteners T
b[ [y /)
l b for attachment of.the snubber to the component and to the snubber e
of-visual inspectionsk ey be'y which appearp noperable as a result anchoraae are secure Snubbe m
meteriiiiiied OPEnA0tf for the purpose of f
establishing the next visual inspection period, providing _that:
gY e.
(1) the cause of the rejection is_ clearly established and remedied e
f for that particular snubber and for other snubbers irrespective of r
h type on that system that may be generically susceptible; or (2) the
[ -- /e
-affected snubber is functionally tested in the as found condition and p-
- determined-OPERABLE per Specifications 4.7.4. f. F7or,th'ose snubberr/ ~
g '.i6 tha e syst the 0 ABI T
fch 'snpbfi a)PA y
con.
ed inA sessing,t e-survej ange che
- e. /
9j d.
Transient Event Inspection ff/
/
An inspection shall be performed of all snubbers attached to sections f
M-of systems that have experienced unexpected, potentially damaging transients,'as determined _from a review of-operational data.or--a visual inspection of the systems,-within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> for accessible.
systems and 6 months for inaccessible systems following this deter-mination.
In addition to satisfying the visual _ inspection acceptance
- criteria,- freedom-of-motion of mechanical snubbers shall be verified using at least one of the following:
(1) manually induced snubber-movement, or (2) evaluation of in place snubber piston setting.
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-*The inspection interva or each type f ber shal not be lengthene mor hart one step,a a time-unles generic pro m has been iden
- ed and
. orrected; in i event the i ection intery may be lengthensd'one step
~
the first t and two step hereafter if.
inoperable snubb(rs of that /
type ar ound.
.2 are not appli,ca le.
,(T e provision p pecification HnPE CREEK 3/4.7-14
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F NIR-N91230 llOPE CREEK ICR 91-18 JNSERT A'FOR SPECIFICATION 4.7.5.c.
PAGE 3/4 7-14:
...shall be classified as unacceptable and nay be reclassified acceptable...
INSERT B FOR SPECIFICATION 4.7.5.c.
PAGE 3/4 7-14:
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 declaren inoperable and the ACTION requirements shall be met.
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NIR-N93220 HOPE CREEK ICR 91-18 NEW TABLE TO BE INSERTED AS PAGES 3/4 7-17a AND 3/4 7-17b:
TABLE 4.7.5-1 SNUBBER VISUAL INSPECTION INTERVAL NUMBER OF UNACCEPTABLE SNUBBERS Population Column A Column B Column C or Category Extend Repeat Reduce Interval Interval Interval (Notes 1 (Notes 3 (Notes 4 (Notes 5 and 2) and 6) and 6) and 6) 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 29 56 109 greater 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 unaccessible.
These categories may be examined separately or jointly..However, that decision shall'be made and documented before any inspection and shall serve as the basis upon which the next inspection interval for that category is determined.
L (Continued) 1 x-
NIR-N91220 IDl'E CRITX ICR 91-1G TABLE 4.7.5-1 (Continued)
SNUBBER VISUAL INSPECTION INTERVAL Note 2:
Interpolation between population or category sizes and the number of unacceptable snubbers is permissible.
Use the 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:
It' 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 lu equal to or less than the number in Column 8 but greater than the number in Columl; A, the next inspection interval shall be the same as the previcus interval.
Note St If the number of ut.neceptable unubbers is equal to or greater than the number in Column C, the next inspection interval shall be two-thirds of the previous
- interval, lloweve r, 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:
1 1/3
- U~U I
I
=
1 g
0 C-a where:
1
= next inspection interval 1
1
= previous inspection interval 0
U = number of unacceptable snubbers found during the previous inspection interval B = number in Column B C = number in Column C Note 6:
The provisions of Specification 4.0.2 are applicable for all inspection intervalo up to and including 48 months.
PLANT SYSTEMS BASES REACTOR CORE ISOLATION COOLING SYSTEM (Continued)
The surveillance requirements provide adequate assurance that RCIC will be OPERADI.E when required.
Although all active components are testable and j
full flow can be demonstrated by recirculation during reactor operation, a complete functional test requires reactor shutdown.
The pump disch6rge piping is ~ 4tained full to prevent water hammer damage and to start cooling at the t possible moment.
3/4.7.5 SNUBBERS i
i r
All snubbers are required OPERABLE to ensure that the structural integrity of the reactor coolant system and all other safety related systems is maintained during and following a seismic or other event initiating dynamic loads.
Snub-bers excluded from this inspection program are those installed on nonsafety-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.
Snubbers are classified and grouped by design and manufacturer but not by size.
For example, mechanical snubbers utilizing the same design features of the 2-kip, 10-kip, and 100-kip capacity manufactured by Company "A" are of the same type.
The same design mechanical snubbers manufactured by Company "B" for the purposes of this Technical Specification would be of a different type, as would hydraulic snubbers from either manufacturer.
A list of individual snubbers with detailed informatior of snubber location and size and of system affected shall be availabie at the plant in accordance with Section 50.71(c) of 10 CFR Part 50.
The accessibility of each snubber shall be determined and approved by the Plant Operations Review Committee.
The deterednation shall be based upon the existing radiation levels and the expected time to perform a visdal inspectiM in each snubber location as well as other factors associated with acc6ssibility during plant operations (e.g.,
temperature, atmosphere, location, etc.), and the recommendations of Regulatory p Guide 8.8 and 8.10.
The addition or d61etion of any snut,ber shall be made in p accordance with Section 50.59 of 10 CFR Part 50.
The visual inspection frequency is based upon maintaining a constant level ; L d[ipspecUii6~ protection to each safety-related syst yi
_of snubber eterpt6ed h[the nu]mber of inopdrable fnubbers ftUnd,during/an inspt>ctio f
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2 In order to estabTsh theTnspecGon frequency for each fype of snubber o'n a safety-related system, it was assumed that the frequency of snubber failures and initiating events is constant with time and that the failure of any snubber on that system could cause the system to be unptotected and to result in fail-ure during an assumed initiating event.
Inspections performed before that l
l HOPE CREEK B 3/4 7-2 1
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NIR-N91330 Ilolt QUIK ICR 91-18 INSERT FOR BASIS 3/4.7.5, PAGE B 3/4 7-2:
Thoroforo, the required inspection interval is based on the number of unacceptablo snubbers found during the previous inspection in proportion to the sizos of the various snubber populations or categories.
This inspection schedule is based on the guidanco provided in Gonoric Lotter 90-09.
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