ML23060A386

Emergency Response Data System Data Point Library Changes

ML23060A386
Person / Time
Site:	Millstone
Issue date:	03/01/2023
From:	Standley B Dominion Energy Nuclear Connecticut
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
23-069
Download: ML23060A386 (1)

Text

Serial No.: 23-069 Docket Nos.: 50-336

ATTACHMENT

Emergency Response Data System (ERDS)

Data Point Library Changes

DOMINION ENERGY NUCLEAR CONNECTICUT, INC.

MILLSTONE POWER STATION UNIT 2

Serial No.: 23-069 Docket Nos.: 50-336 Attachment, Page 1 of 2

Millstone Power Station Unit 2 (MPS2) Emergency Response Data System (ERDS)

Data Point Library (DPL) Change Summary

Preceding ERDS Points MS2 Point ID Plant Spec Point Description R9049 CLEAN WASTE DISCHARGE R9116 AERATED WASTE DISCHARGE

Deleted ERDS Point MS2 Point ID Plant Spec Point Description R9116 AERATED WASTE DISCHARGE

Modified ERDS Point MS2 Point ID Plant Spec Point Description R9049 AERATED/CLEAN WASTE DISCHARGE

Serial No.: 23-069 Docket Nos.: 50-336 Attachment, Page 2 of 2

MPS2 ERDS DPL Reference File

Date: 2/17/2023 Reactor Unit: MS2 Data Feeder: N/A NRC ERDS Parameter: EFF LIQ RAD Point ID: R9049 Plant Spec Point Desc.: AERATED/CLEAN WASTE DISCHARGE Generic/Cond Desc.: Radioactivity of Released Liquids Analog/Digital: A Engr Units/Dig States: KCPM Engr Units Conversion: 10(1.25*Volts - 3.25) where Volts = 1-5 Minimum Instr Range: E-2 Maximum Instr Range: E+3 Zero Point

Reference:

N/A Reference Point Notes: N/A PROC or SENS: S Number of Sensors: 1 How Processed: N/A Sensor Locations: Auxiliary Building Alarm/Trip Set Points: Variable NI Detector Power Supply Cut-off Power Level: N/A NI Detector Power Supply Turn-on Power Level: N/A Instrument Failure Mode: Low Temperature Compensation for DP Transmitters: N Level Reference Leg: N/A Unique System Desc.: Monitor is automatically isolated upon high alarm. Reading would remain high despite isolation. Monitor is off-scale high before any release of significant dose. Conversion to meaningful µci/sec depends largely on background (varies), flow rate and nuclide mix.