ML20138H922

Proposed Tech Spec Change,Clarifying Conditions Which Allow Feedwater Pump & Main Turbine Trip Defeat During Physics Tests

ML20138H922
Person / Time
Site:	Three Mile Island
Issue date:	10/24/1985
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20138H846	List: ML20138H843 ML20138H900 ML20138H922
References
NUDOCS 8510290182
Download: ML20138H922 (1)

Text

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g Table 3.5-1 Continu2d ,

,k '

INSTRUENTS OPERATING CONDITIONS o

[. Functional Unit (A)

Mininum Operable (B)

Minimum Degree (C)

P- Operator Action if Conditions Channels of Redundancy of Column A and B Cannot be Met A. Reactor Protection System (Cont'd.)

9. Power / number of pumps 2 1 Maintain hot shutdown instrument channels .

10. High reactor building 2 1 Maintain hot shutdown pressure channels (a) For channel testing, calibration,~ or maintenance, the minimum number of operable channels may be two and a degree of redundancy of one for a maximum of four hours.

(b) When 2 or 4 power range instrument channels are greater than 10 percent full power, hot shutdown is not required.

w (c) When 1 or 2 intermediate range instrument channels is greater than 10-10 amps, or 2 of 4 power range instrument g channels are greater than 10 percent full power, hot shutdown is not required.

B. Other Reactor Trips

1. Loss of Feedwater 2(a)(c) 1(a)(c) Maintain less than 7% indicated reactor power.

2. Turbine Trip 2(b)(c) 1(b)(c) Maintain less than 20% indicated reactor power.

(a) Bypass of the feedwater pump trip signal may be placed in effect when indicated reactor power is less than 7%.

The bypass will be removed when reactor power is raised above 7%.

(b) The main turbine trip bypass may be placed in effect when indicated reactor power is less than 20%. The bypass will be removed when reactor power is raised above 20%.

(c) Trip may be defeated during physics tests.

8510290192 851024 PDR P ADOCK 05000289 PDR

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