ML20010E878

Forwards Request for Addl Info as Result of Review of Re Reactor Protection Sys Power Monitoring Design Mod

ML20010E878
Person / Time
Site:	Pilgrim
Issue date:	09/01/1981
From:	Ippolito T Office of Nuclear Reactor Regulation
To:	Morisi A BOSTON EDISON CO.
References
NUDOCS 8109080450
Download: ML20010E878 (4)

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-I Dodet Ho. 50-293 rn.

SEP I i9N 6

Pfr. A. Victor Morist, Mgr.

Huclear Operations Support Dept.

SG' 0 31981m 'il Boston Edison Company 800 Boylston Street

,J "** Esi$P" Boston, Massachusetts 02199 9

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Dear Mr. Morisi:

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Subject:

REACTOR PROTECTION SYSTEM (RPS) POWER MONITORING SYSTEM DESICM MODIFICATION RE: PILGRIM 1 By letter dated June 17, 1981 you submitted design information for/the subject mdification that you intend' to install at your facility. 'We have reviewed this infomation and find ' hat, to complete our evaluation, we will require the additional infomation requested in enclosure (1).

Please provide this infomation concurrent with systen in:tallation.

Enclosure (2) forwards, for your consideration, codel Technical Speciff-cations for Electric Power Fonitoring for RPS. -Submittal of the proposed Technical Specifications that you have comitted to subnit should be in the fom of a request for rrodification of yoar license accompanied by an appropriato fee.

t This request for information was approved by OMB under clearance number 3150-0011 which expires September 30, 1981. Commts on burden and duplication nay be directed to the Office of t'anagement and Budget, Reports !!anagement, Room 3203, Hew Executive Office Building, Washing'.on, D. C.. 20503.

Thank you for your cococration.

Sincerely, Thomas A. Ippolito, Chief Operating Reactors Branch #2 Division of Licensing

Enclosures:

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. Mr. -' A. Victor Morisi

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Mr. Richard D. -Machon

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Pilgrim Station Mansger Boston Edison Company RFD'#1, Rocky Hill Road Plymouth, Ma sachusetts 02360 Henry Herrmann, Esquire i

Massachusetts-Wildlife Federation 151 Tremont Street Boston, Massachusetts- 02111 Plymouth-Public Library North Street

- Plymouth, Massachusetts 02360 Resident Inspector c/o U. S. HRC P. O. Box 867

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RPS POWER SUPPLY DESIGN MODIFICATION REQUEST FOR ADDITIONAL INFOR'iATION

' PILGRIM I NUCLEAR POWER-STATION DOCKET NO. 50-293 l '.

Submit detailed drawings of the proposed design modification to the monitoring system for the RPS power supplies (MGs and alternat? source).

The drawings should include component ratings, ahd schematic and wiring diagrams. Detailed relay information may be submitted in the form of the~

manufacturers Technical Bulletin.

2.

Submit a current revision of tne electrical one-line diagram of the ~on-site distribution system and a schematic / elementary diagram that includes the RPS power distribution buses.

3., Provide justification that proposed time delays, if any, will not result in damage to RPS system components or affect the performance of required safety functions.

4.

Provide justification that the design modification and components will meet the requireme.nts of'GDC 2 and' GDC 21 of 10 CFR Part 50, Appendix A.

5.

Specify monitoring system over-voltage, under-voltage, and.under-frequency trip setpoints.

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Enclosure (1) e N'

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ELECTRICAL POWER SY_ STEMS 3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS

~ ELECTRIC POWER MONITORING FOR REACTOR PROTECTION SYSTEM LIMITING CONDITION FOR OPERATION

' 3.8.2.7 The power monitoring system for the in service RPS MG set or Alternate Source shall be OPERABLE.,

APPLICABILITY:

CONDITIONS 1 and 2.

i ACTION:

With the power monitoring system fcr the in service RPS MG set c Alternate Source inoperable, restore the inoperable power monitoring system to OPERABLE status within 30 minutes or remove the kPS MG set or Alternate Source, associated with the inoperable power monitoring system from service.

One channel of a power monitoring system may be inoperable, at necessary for test or maintenance, not to exceed 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> / month.

SURVEILLANCE REQUIREMENTS 4.8.2.7 The above specified RPS power monitoring system instrumentation shall be determined OPERABLE:

a.

At least once per six months by performing a CHANi:EL FUNCTIONAL TEST; and b.

At least once per aperating cycle by demonstrating the OPERABILITY of over-voltage, under-voltage and under-frequency protective

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inst amentation by performance of a CHANNEL CALIBRATION incluJing -

simulated automatic actuntion of the protective relays, tripping logic and output circuit breakers and verifying the following setpoints.

1.

Over-voltage 5

VAC, 2.

Under-voltage >

VAC, and 3.

Under-frequency >

Hz.

9 Enclosure (2)

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