ML19332D116

Proposed Tech Specs Incorporating Wording from Generic Ltr 84-13 Which Removes Table 3.7.4 Re safety-related Mechanical Snubbers

ML19332D116
Person / Time
Site:	Yankee Rowe
Issue date:	11/22/1989
From:	YANKEE ATOMIC ELECTRIC CO.
To:
Shared Package
ML19332D114	List: ML19332D113 ML19332D116
References
GL-84-13, NUDOCS 8911300034
Download: ML19332D116 (6)

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I PLANT SYSTEMS 3/4.7.9 SNUBBERS, 1

LIMITING CONDITION FOR OPERATION 3.7.9 All snubbers shall be OPERABLE. The only snubbers excluded from this requirement 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.

APPLICABILITY: MODES 1,.2, 3 cnd 4.

(MODES 5 and 6 for snubbers located on systems required OPERABLE in those MODES).

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

jil$VEILLANCE REOUIREMENTS

4. 7. 9 - Each snubber shall be demonstrated OPERABLE by perfornance of the following augmented inservice inspection program, a.

Visual Inspections The first inservice visual inspection of snubbers shall be performed after June 3, 1982 but before December 3, 1982 and shall include all snubbers. If less than two (2) snubbers are found inoperable during the-first inservice visual inspection, the second inservice visual.

inspection shall be performed 12 months 1 25% from the date of the first inspection. Otherwise subsequent visual inspections shall be performed in accordance with the following schedule:

I No. Inoperable Snubbers Subsequent Visual per inspection Period Inspection Period *#

0 18 months i 25%

4 1

12 months 1 25%

l 2

6 rionths + 25%

3, 4 124 days 1 25%

5,6,7 62 days i 25%

8 or more 31 days 1 25%

<j The snubbers may be categorized into two groups: Those accessible l

i and those inaccessible during reactor operation. Each group may be inspected independently in accordance with the above schedule.

• The inspection interval shall not be lengthened more than one step at a time.

1. The provisions of Specification 4.0.2 are not applicable.

Yankee Rowe 3/4 7-27 AmendmentNo.#1,//

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PLANT SYSTEMS SURVEILLANCE REOU QEMENTS (Continugd)

Snubbers that are especially difficult to remove or in high radiation zones during shutdown shall also be included in the representative sampic.*

'In addition to the regular sample, snubbers which failed.the previous functional test shall be retested during the next test period.

If a spare snubber has been installed in place of a failed L

snubber,-then both the failed snubber (if it is repaired and F(,'

installed in another position) and the spare snubber shall be retested. Test results of these snubbers may not be included for i

the re-sampling.

II If any snubber selected for functional _ testing either fails-to b

lockup or fails to move, i.e., frozen in place, the cause will'be

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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.bc independent of the requirements stated above_for snubbers not meeting the

-functional test acceptance criteria.

b(

For the snubber (s) found inoperable, an engineering evaluation shall be performed on the components which are supported by the anubber(s). The purpose of this engineering evaluation shall be to t

1 determine if the components supported-by the snubber (s)_were K

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adversely affected by the inoperability of the snubber (s) in order to ensure that the supported component remains capable of meeting the designed service.-

d.-

Mechanical Snubbers Functionni Test Acceptance Criteria b

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The mechanical snubber functional test shall verify that 1.

The force that initiates free movement of the snubber. rod in cither tension or compression is less than the specified maximum drag force. Drag force shall not have increased more than 50% since the last functional' test.

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• 1 Permanent or other exemptions from functional testing for individual snubbers in these categories may be granted by the Commission only if a F

justifiable basis for exemption is presented and/or snubber life destructive testing was performed to qualify snubber operability for all

. design conditions at either the completion of their fabrication or at a l

subsequent date.

Yankee Rowe 3/4 7-29 Amendment No. H. //

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ptANT SYSTEMS f'

G SURVEILLANCE REQUIREMENTS (Continued)'

2. -

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

compression.

3.

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

verified.

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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 service life is based shall be maintained as required by Specification 6.10.2.n.

1 Concurrent with the first inservice' visual inspection and at least once per 18 nonths thereafter, the installation and nmintenance records for each snubber shall be reviewed to verify that the indicated service life has not been exceeded or will not be exceeded prior to the next scheduled snubber service life review.

If the indicated service life will be exceeded prior to the next scheduled L

snubber service life review, the snubber service' life-shall be re-evaluated or the snubber shall be replaced or reconditioned so as to extend its service life beyond the date of the next scheduled

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service life review. This re-evaluation, replacement, or

-reconditioning shall be indicated.ir. the records.

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Yankee Rowe 3/4 7-29a AmendmentNo.#I,71,//

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PLANT SYSTEMS.

j BASES i-3/4.7.8 ENVIRONMENTAL MONITORIhG l

DELETED 1

3/4.7.9 SNUBBERS I

All snubbers are required OPERABLE to ensure that-the structural f

integrity of the reactor coolant system and all other safety-related systems i

L is maintained during and following a seismic or other event initiating dynamic l

p loads.-

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The vistal inspection frequency is based upon nmintaining a constant l-level of snu1ber protection to systems. Therefore, the required inspection interval srsies inversely with the observed snubber f ailures and is determined t

by the runber of inoperable snubbers found during an inspection.

Inspections perfermed before that interval has elapsed may be used as a new reference point to cetermine the next inspection.

However, the results of such early inspections performed before the original required time interval has elapsed (nominal time less.25%) may not be used to lengthen the required inspection interval. Any inspection whose results require a shorter inapection interval will override the previous schedule, r

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'When the cause of the rejection of a snubber is clearly established and remedied for that snubber and for any other snubbers that may be generically susceptible, and verified by inservice functional testing, that snubber may be exempted from being counted as inoperable.

Generically susceptible snubbers are'those which are of a specific make or model and have the same design features directly related to rejection of the snubber by visual inspection, or l

are similarly located or exposed to the same environmental conditions such es temperature, radiation, and vibration.

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YANKEE-ROWE B 3/4 7-6 AmendmentNo.[f,//,//

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ADMINISTRATIVE CONTROLS y

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Records of the service lives of all snubbers, including the date at 3

which the service life commences and associated installation and-I

. maintenance records.-

6.11 RADIATION PROTECTION PROGRAM I-Procedures'for personnel radiation protection shall be prepared consistent

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with requirements of 10 CFR Part 20 and shall be approved, maintained and adhered,to for'all operations. involving personnel radiation exposures.

6.12 HICH RADIATION AREA-

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6.12.1 Paragraph 20.203 " Caution signs. labels, signals, and controls".

In I

i lieu of:the " control device" or " alarm signal" required by paragraph.

g 20.203(c)(2), each high radiation area in which the intensity of radiation is.

P 1000 mrem /hrLor less shall be barricaded and conspicuously posted as a high p

radiation area, and entrance thereto shall be controlled by requiring. issuance L

of a Radiation Work Permit.* An individual or group of individuals permitted to enter such areas shall be provided with one or more of the followings a.

A radiation monitoring device which continuously indicates the l

radiation dose rate in the area.

l b.

A radiation monitoring device which continuously integrates the radiation dose rate in the area, and alarms when a preset integrated l

dose is received.

Entry into such areas with this monitoring device may be made after the dose rate level in the area has been.

l established and personnel have been made knowledgeable of them.

p.

A Health Physics qualified individual (i.e., qualified in radiation c.

protection procedures), with a radiation dose rate monitoring device, who is responsible for providing positive control over the activities within the area and who will perform radiation surveillance at the frequency specified fn the RWP. The l

surveillance frequency will be established by the Plant Health Physicist.

i Health Physics personnel shall be exempt from the RWP issuance requirement during the performance of their assigned radiation protection dutiec.

providing they are following plant radiation protection procedures for entry into high radiation areas.

s YANKEE-ROWE 6-24 Amendment No. 71. 80. M j

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