05000293/LER-1980-072-01, /01T-0:on 801002,reactor Protection Sys Trip Level Setting Was Adjusted to Nonconservative Level Due to Calculation Error.Procedure 7.4.14 Being Processed to Clearly Delineate Method for Calculating Set Points

/01T-0:on 801002,reactor Protection Sys Trip Level Setting Was Adjusted to Nonconservative Level Due to Calculation Error.Procedure 7.4.14 Being Processed to Clearly Delineate Method for Calculating Set Points

ML19339A682
Person / Time
Site:	Pilgrim
Issue date:	10/27/1980
From:	Holland P BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19339A656	List: 05000293/LER-1980-072, Forwards LER 80-072/01T-0 05000293/LER-1980-072-01, /01T-0:on 801002,reactor Protection Sys Trip Level Setting Was Adjusted to Nonconservative Level Due to Calculation Error.Procedure 7.4.14 Being Processed to Clearly Delineate Method for Calculating Set Points
References
LER-80-072-01T, LER-80-72-1T, NUDOCS 8011040521
Download: ML19339A682 (2)

LER-1980-072, /01T-0:on 801002,reactor Protection Sys Trip Level Setting Was Adjusted to Nonconservative Level Due to Calculation Error.Procedure 7.4.14 Being Processed to Clearly Delineate Method for Calculating Set Points

Event date:
Report date:
2931980072R01 - NRC Website

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A U. S. NUCLEAR REGULATOC:Y COMMISSION a.r.

LICENSEE EVENT REPORT l

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(TTT]l On October 15, 1980 the ORC concurred,following its review,that on October 2,1980 l

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(y77) l a RPS trip level setting was adjusted to a non-conservative level. The review con-l io,Ai l cluded that as a result of a calculation error the Main Steam Line High Radiaolon l

Monitors 1705-2A,B,C,D were set to 7.7 times normal full power background. Technical; l

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titled " Source Calibration of Main Steam Line Radiation Monitors" is being processed.I l

This change will more clearly delineate the method for calculating set points for

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