ML19325D927

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Proposed Tech Specs,Changing Min Requirement for Number of Operable in-core Detector Thimbles from 75 to 50% for Cycle 12 Operation
ML19325D927
Person / Time
Site: Trojan File:Portland General Electric icon.png
Issue date: 10/20/1989
From:
PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML19325D895 List:
References
NUDOCS 8910270174
Download: ML19325D927 (3)


Text

l 3

,A LCA 181 4.< '

Attachment B Page 1 of 1 INSTRUMENTATION MOVABLE INCORE DETECTORS l

LIMITING CONDITION FOR OPERATION 3.3.3.2 The movable incore detection system shall be OPERABLE with:

a.

At least 75%* of the detector thimbles for Applicability B, C l

and D, b.

At least 18 thimbles for quarter-core flux maps for Applicability A, c.

A minimum of 2 detector thimbles per core quadrant for Applicability B, C and D, and

d. : Suf ficient movable detectors, drive, and readout equipment to mcp these thimbles.

APPLICABILITY: When the movable incore detection system is used for:

A.

Recalibration of the axial flux offset detection system (QUADRANT POWER TILT RATIO less than or equal to 1.02),

t B.

Recalibration of the axial flux offset detection system (QUADRAN1 POWER TILT RATIO greater than 1.02),

C.

Monitoring the QUADRANT POWER TILT RATIO, or l

D.

Measurement of F and Fg (2).

g ACTION:

L I

With the movable incore detection system inoperable, do not use the system for the above applicable monitoring or calibration functions.

The

[

provisions of Specification 3.0.3 and 3.0.4 are not applicable.

l

. SURVEILLANCE REQUIREMENTS 4 J.3.2 The incore movable detection system shall be demonstrated OPERABLE

. g' '

l by normalizing each detector output to be used within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to its use when required for:

a.

Rccalibratiun f the excore axial flux offset detection system, g

or b

b.

Monitoring the QUADRANT POWER TILT RATIO, or

,4%

c.

Measurement of F and F0 (Z).

H nv%

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  • For Cycle 12 operation, 50 percent is to be used instead of 75 percent.

l TROJAN-dNIT 1 3/4 3-37 Amendment No. 72

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c _

s LCA 181

, Markup Gf Present TTS Attachment C Page 1 of 1 INSTRUMENTATION MOVABLE INCORE_DET.E_QTORS LIMITING CONDITION FOR OPERATION 3.3.3.2 Th' movable incore detection system shall be OPERABLE with:

At least 75[of the detector thimbles for ApplicaDility B, C a.

and D, b.

At least 18 thimbles for quarter-core-flux maps for Applicability A, c.

A minimum of 2 detector thimbles per core quadrant for Applicability 8, C and D, and d.

Suf ficient' movable detJctors, drive, and readout equipment to map these thimbles.

APPLICABILITY: When the movable incore detection system is used for:

A.

Recalibration of the axial flux offset detection system (QUADRANT POWER TILT RATIO less than or equal to 1.02),

B.

Recalibration of the axial flux offset detection system (QUADRANT POWER TILT RATIO greater than 1.02),

C.

Monitoring the QUADRANT POWER TILT RATIO, or D.

Measurement of F and Fn (Z).

H ACTION:

With the movable incore detection system inoperable, do not use the system for the above applicable monitoring or calibration functions.

The provisions of Specification 3.0.3 and 3.0.4 are not applicable.

SURVEILLANCE REOUIREMENTS 4,3.3.2 The incore movable detection system shall be demonstrated OPERABLE by normalizing each detectcr output to be used within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to its use when required for:

Recalibration of the excore axial flux of f set detection system, a.

or b.

Monitoring the QUADRANT POWER TILT RATIO, or c.

Measurement of F and Fg (Z).

g TROJAN-UNIT 1 3/4 3-37 AmendmentNo.//

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W fo' Cy'Ie iA opeu24cn, so7c' i,, to bC U.S e H.SfCA k o f '7f g,

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of

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PORTLAND CdNERAL ELECTRIC COMPANY,

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Docket 50-344 THE CITY OF EUGENE, OREGON, AND

)

Operating F.icense NPF-1 PACIFIC POWER & LTGHT COMPANY

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(TROJAN NUCLEAR PLAWT)

)

CERTIFICATE OF SERVICE I hereby certify that copies of License Change Application 181 to the Operating License for Trojan Nuclear Plant, dated October 20, 1989, have-been served on the following by hand delivery or by deposit in the United States mail, first class, this 20th day of October 1989:

State of Oregon Department of Energy 625 Marion Street, NE Salem OR 97310 Mr. Michael J. Sykes Chairman of County Commissioners columbia County Courthouse St. Helens OR 97051 S. A. Bauer, Manager Nuclear Regulation Branch Nuclear Safety & Rer,ulation Subscelbed and sworn to before me this 20th day of October 1989.

Notary Public of Oregon b"/>'kd My Commission Expires:

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