ML20097G725
| ML20097G725 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 06/16/1992 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Northeast Nuclear Energy Co (NNECO), Connecticut Light & Power Co, Western Massachusetts Electric Co |
| Shared Package | |
| ML20097G728 | List: |
| References | |
| DPR-65-A-160 NUDOCS 9206170260 | |
| Download: ML20097G725 (8) | |
Text
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UNITED S TATEs e!,3m
%g NUCLE AR REGULATORY COMMISSION 5
j WASHINGTON, D. C. 20556
%,..... sd HQRTHEAST NUCLEAR ENER9Y COMPANY THE CONNECTICUT LIGHT AND POWER COMPANY THE WESTERN MASSACHUSETTS ELECTRIC _LQMPANY DOCKET NO. 50-336 MILLSTONE NUCLEAR POWER STATION. UNIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.160 License No. DPR-65 s
1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendment by Northeast Nuclear Energy Company, et al. (the licensee) dated February 3, 1992, supplemented by letter dated April 1, 1992, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Connission's rules and regulations set forth in 10 CFR Chapter I; B.
The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.
There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.
The issurnce of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.
The issuance of this amendinent is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.
9206170260 920616 PDR ADOCK 05000336 P
4 2.
Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C (2) of Facility Operating License No. DPR-65 is hereby amended to read as follows:
(2) Technical Soecificatinni The Technical Specifications contained in Appendix A, as revised through Amendment No.160 are hereby incorporated in the license.
The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan, 3.
This license amendment is effective as of the date of its issuance, to be implemented within 30 days of issuance, FOR THE NUCLEAR REGULATORY COMMISSION Jo M 7. Stolz, Director P oject Directorate I-4 ivision of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance: June 16, 1992 1
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ATTACHMENT TO LICENSE AMENDMENT NO.160 t j
FACILITY OPERATING L1GfMSE No. DPR-65 i
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i DOCKET NO. 50-3.31~
Replace the following pages of the Appendix A Technical-Specifications with j
the enclosed pages.
The revised pages_ are identified by amendment number and-i contain vertical lines indicating the areas of change.
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~ Insert-L 3/4 7 21 3/4 7-21 i
3/4 7-22 3/4 7 - !
3/4 7-22a 3/4 7-22a 3/4.7-22b-3/4 7-32
_3/4 7-32_
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PLANT SYSTEMS-3/4.7.8 SNUSEBS LIMITING CONDITION FOR OPERATION All snubbers shall be OPERABLE. The only snubbers excluded frvm the 3.7.8 requirements are those installed on nonsafety related systems and the.1 only if their failure or failure of the system on which they are installed would have no adverse effect on any safety related system.
APPLICABillTY: H0 DES 1, 2, 3, and 4.
MODES 5 and 6 for snubbers located on systems required OPERABLE in those Mn0ES.
ACIl0B:
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 OPEPABLE status and perform an engineering evaluation per Specification 4.7.8.d on the attached component or declare the attached g
system inoperable and follow the appropriate ACTION statement for the system, 4
SURVEILLANCE RE0VIREMENTS 4
4.7.8 Each snubber shall be demonstrated OPERABLE by aerformance of the following augmented inservice inspection program and tie requirements of Specification 4.0.5.
a.
Insoectiqn_Iyagi As used in this specification, " type of snubber" shall mean snubbers of the same design and manufacturer, irrespective of capacity, 4
b.
Visual Inseactions 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 4.7-3.
The visual inspection interval for each type of snubber shall be determined based upon the criteria provided in Table 4.7-3 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 AcceDtance 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 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 Millstone Unit 2 3/4 7-21 Amendment No. JI, /J, E,
'0" f),JJE,160
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i PLANT SYSTEMS l
jgylj,LLANCE REOUIMMENT (Continued) that may be generically susceptible; and (2) the affected snubber is-l functionally tested in the as-found condition and determined OPERABLE pe-Specification 4.7.8.e or 4.7.8.f,_as applicable. All L
snubbers found connected to an inoperable cosmon hydraulic fluid i-reservoir shall be counted:as unacceptable for determining the next inrpection interval. A review and evaluation shall be performed and documented ' ' Justify continued operation with an unacceptable snubber.
li continued operation cannot be justified,-the snubber shall be declared inoper.ble and the ACTION requiremants shall be i
met.
d.
Snubber Tests At least once per eighteen (18) months during shutdown, a represen-1 tative sample (10% of-the total of each type of snubber, mechanical and hydraulic, except steam generator hydraulic snubbers in use in the plant) shall ube tested either in place or in a bench test.
For each snubber that_does not meet the test acceptance criteria of j
Specification 4.7.8.e or 4.7.8.f, as applicable, an additional 5% of that type of snubber shall be tested, s
Testing shall continue until no additional inoperable. snubbers are found within a sample or until all snubbers have been tested. The i
representative sample selected for testing shall include.the various configurations, and the range of size and capacity of snubbers.
Snubbers identified as 'Especially Difficult to _ Remove" or in "High Radiation Zones During Shutdown" shall also be included in the representative sample.*
4
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In addition'to the regular sample, in locations where snubbers had failed the previous-test due to operationalf or onvironmental condi-tions_(excessive vibration, water hammer,-high radiation, extreme.
I heat or humidity, etc.), the snubbers currently: installed, n_ these i
locations shall be tested during the next test period. Test results i
of these snubbers may not= be. includ:d _ for the _resampling.
All replacement snubbers shall have bean tested prior to _ installation.
All steam generator hydraulic snubbers shall be tested and refur-bished every seven years or less in accordance with'the preventative, d -
maintenance program, in lieu of the functional test requirements of this specification.
- Permanent or other exemptions from functional tetting for individual snubbers
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4 in these categories may be granted by the Commission only if a justifiable-i basis for exemption is presented.
- l MILLST0HE - UNIT-2 3/4 7-22 Amendment Nos. JJ, JJ, #2, noti sp,yyg,J;#,160
plMT SYSTEM E!gyEILLANCEREOUIREMENT(Continued)
If any snubber selected for testing either fails to lock up or fails to move (i.e., froren in place), the cause will be evaluated and if mused by manufacturer design deficiency. all snubbers of +he same design subject to the same defect shall be tested regardless of location or difficulty or removal.
This testing requirement shall be independent of the requirements stated above for snubbers not meeting the test acceptance criteria, j
for the snubber (s) found inoperable, an engineering evaluation shall be performed on the components which are supported by the snub-ber(s). The purpose of this engineering evaluation shall be to determine if the components supported by the snubber (s) vere adverselyaffectedbytheinoperabilityofthesnubber(s)inorder to ensure that the supported component remains capable of ineeting i
the designed service.
e.
Hydraulie Snubbers Functional Test Acceptance Criteria The hydraulic snubber functional test shall verify that:
1.
Activatior, (restraining action) is achi6ved 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, f.
Mechanical Snubbers functional Test Acceptance Criteria
- The mechanical snubber functional test shall verify that:
1.
The force that initiates free movement of the snubber rod in either tension or compression is less than the specified maximum drag force.
Activation (restraining action) is achieved within the specified range of velocity or acceleration in both tension and compression.
g.
Snubber Service Life Monitor.ina 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.h Mechanical snubber functional test acceptance criteria shall become effective upon installation of snubber testing equipment but not later than June 30,
- 1985, HILLSTONE UNIT 2 3/4 7-22a Amendment Nos. 5, JJS160 0017
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PLANT SYSTEMS f
SURVEILLANCE REQUIREMENT (Continued) l.
Concurrent with the first inservice visual inspection and at least i
ser 18 months thereafter, the installation and maintenance l
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recores for each snubber shall be raviewed to verify that' the i
indicated service life has not been exceeded or will not be exceeded l
prior to the next scheduled snubber service life review.
If the indicated service life will be exceeded prior to the next scheduled service life review, the snubber service life shall be reevaluated or the snubber shall be replaced or reconditioned so as tc extend its i
service life beyond the date of the next scheduled service life i
This reevaluation, replacement or reconditioning shall be review.
indicated in the records.
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MILLSTONEj-UNIT 2' 3/4'7-22b Amendment Nos. 7#. JJA160 eau
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TABLE 4.7-3 ShTBBER VISUAL INSPECTION INTERVAL Column C Column A Column 3 Extend Interval Repeat Interval Reduce Interval Population
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(Notes 1 and 2)
(Notes 3 and 6)
(Notes 4 and 6)
(Notes 5 and 6) 3 or Category I
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0 2
5 1
0 0
4 80 1
0 100 g
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0 150 5
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2 200 12 25 5
300 The nex visual inspection interval for a snubber population or categ Note 1:
based upon their accessib.lity during power that interval.
Snubbers may be categorized, These categories may be examined separately or jointly.
operation, as accessible or inaccessible.However, that decision must be made and documnte be used as the basis upon which to determine 3e next inspection interval for that category.
Interpolation between population or category sizes and the number of unacceptable snubbers is Use next lower integer for the value of the limit for Columns A, B, or C if that Note 2:
w iateger includes a fractional value of unacceptable snubbers as determined by interpolation.
pemissible.
En If the number of unacceptable snubbers is equal to or less than the nuniber in Column A, the next inspection interval may be twice the previous interval but not greater than 48 months.
Note 3:
If the number of unacceptable snubbers is equal to or less than the number in Column B but great inspection interval shall be the same as the previous Note 4:
F than the number in Column A, the next interval.
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If the number of unacceptable snubbers is equal to or greater than the number in Column C, the However, if the number of a
next inspection interval shall be two-thirds of the previous interval.
Note 5:
anacceptable snubbers is less than the number in Column C but greater than the number in 1
the next interval shall be re R ed proportionally by interpolation, that is, the previous interval f
shall be reduced by a factor that is one-third of the ratio of the difference between the numbr i
of unacceptable snubbers found during the previous interval and the number in Column B to the D
l difference in the numbers in Columns B and C.
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inspection intervals up to and The provisions of Specification 4.0.2 are applicable for all Note 6:
including 48 months.