ML19273B652

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Forwards Safety Evaluation for Mod to Safety Injection Actuation Sys
ML19273B652
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 05/03/1979
From: Lainas G
Office of Nuclear Reactor Regulation
To: Schwencer A
Office of Nuclear Reactor Regulation
Shared Package
ML19273B653 List:
References
NUDOCS 7906120094
Download: ML19273B652 (2)


Text

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MEMORANDUM FOR:

A. Schwencer, Chief, Operating Reactors Branch #1, D0R FROM:

G. Lainas, Chief, Plant Systems Branch, 00R I

SUBJECT:

SAFEYY EVALUATION REPORT - PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 - EVALUATION OF l

SAFETY INJECTION SYSTEM ACTUATION TECHNICAL SPECIFICATION CHANGE REQUEST (TACS 11634/11635) i The Plant Systems Branch has reviewed Northern States Power Company's submittal of April 26, 1979 in which the licensee requested amendments to Facility Operating Licenses DPR-42 and DPR-60 to incorporate changes to the Technical Specifications for the Prairie Island Nuclear Generating Plant, Unit; 1 and 2.

The proposed change is the result of a modification proposed in response to the directions of IE Bulletin No.79-06A dated April 14, 1979.

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The amendments proposed changes to the Technical Specifications which j

relate to modifications to the Safety Injection (SI) actuation system logic.

The design change requested is thet an SI signal be developed i

by a two-of-three low pressurizer pressure signal instead of a one-of-i three coincidence of low pressurizer pressure and level signal.

Based on our review, we conclude that the modifications to the SI actuation system logic satisfy the requirements of IEEE 279-1971 and that the associated Technical Specifications are correct; and therefore, are acceptable.

"b Chigf G. La ng Plant 59, e,ms Branch Division of Operating Reactors cc:

See next page 2350 164 79061200 %

Contact:

J. Burdoin X-28077 cc w/ enclosure:

V. Stello D. Eisenhut S. Hanauer R. Satterfield R. Vollmer M. Grotenhuis D. Tondi J. Burdoin 2350 165

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