ML20245D302

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Proposed Tech Specs,Correcting Suppression Pool Makeup Sys Initiation Setpoint
ML20245D302
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 04/18/1989
From:
SYSTEM ENERGY RESOURCES, INC.
To:
Shared Package
ML20245D301 List:
References
NUDOCS 8904280216
Download: ML20245D302 (4)
v • d • e


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er . . V e4 N, M P-GRAND GULF-UNIT 1 3/4 3-109 Amendment No.

_ _ _ _ = _ _ - - _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ - - _ _ _ _ - _ _ - _

Vk.w ac _

INSTRUMENTATION 8ASES 3/4.3.7.10 L00SE-PART DETECTION SYSTEM

. N OPERABILITY of the loose part detection systas ensures that sufficient capability is available to detect loose metallic parts in the primary system and avoid or mitigate damage to primary system components. The system consists 4 of 16 sensors, of which only 8 are selected and need to be OPERABLE at a ties, n

to provide the inputs to the 8 mo*nitoring channels. The remaining 8 sensors may be used as replacement sensor inputs for failed sensors or to provide a change in location of the area being monitored. W allowable out-of-service -

times and surveillance requirements are consistent with the recommendations of Regulatory Guide 1.133, " Loose-Part Detection Program for the Primary System

' of Light-Water-Cooled Reactors," May 1981.

3/4.3.7.11' RADI0 ACTIVE LIQUID EFFLUENT IGNITORING INSTRUMENTATION '

The radioactive liquid effluent'sonitoring instrumentation is provided to monitor and control, as applicable, the , releases of radioactive materials in The liquid effluents during actual or potential releases of liquid effluents.

alam/ trip setpoints for these instruments shall be calculated in accordance with the procedures in the ODCM to ensure that the alarm / trip will occur prior to exceeding the limits of 10 CFR Part 20. The OPERABILITY and use of this instrumentation is consistent with the requirements of General Design Criteria 60, 63 and 64_of Appendix A to 10 CFR Part 50.

3/4.3.7.12 RADI0 ACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION The radioactive gaseous effluent monitoring instroentation is provided to monitor and control, as applicable, gaseous effluents during actual or potential releases. Those instruments that monitor the activity.of gaseous effluents being released to the environment shall have their alarm / trip setpoints calculated in accordance with the methods in the ODCM to ensure that the alarm / trip will occur prior to exceeding the limits of 10 CFR Part 20.

Other instruments that monitor offgas processing, (i.e., the Explosive Gas Monitor, Offgas Pre-Treatment Monitor, and Offgas Post-Treatment Munitor)

-are calibrated according_to plant procedures. The OPERABILITY and use of this

. instrumentation is consistent with the requirements of General Design Criteria 60, 63 and 64 of Appendix A to 10 CFR Part 50, 3/4.3.8 PLANT SYSTEMS ACTUATION INSTRUMENTATION The plant systems actuation instrumentation is provided to initiate action to mitigate the consequences of accidents that are beyond the ability of the operator to control. The LPCI mode of the RHR system is automatically initiated-en a_high drywell pressure signal and/or a low reactor water level, level 1.ing signal. The containment spray system will then actuate automatically follow high drywell and high containment pressure signals. Negative barometric pressure fluctuations are accounted for in the trip setpoints and allowable values spect-fied for drywell and containment pressure-high. A 10-minute minimus,13-minute maximum time delay exists between initiation of LPCI and containment spray cctuation. A high reactor water level, level 8 signal will actuate the feed-water system /sain turbine trip system. The suppression pool makeup system is L automatically initiated on a low low suppression pool water level signal with a concurrent LOCA signal or following a specified time delay after receipt of a LOCA signal. The low low suppression pool water level Trip Setpoint and Allowable Value are relative to the surface floor of the suppression pool (93'48 above mean sea level).

GRAND GULF- *1 8 3/4 3-6 Amenament No. 1

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