ML18094A113

Submittal of Emergency Response Data System

ML18094A113
Person / Time
Site:	Calvert Cliffs
Issue date:	04/02/2018
From:	Laura Smith Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML18094A113 (4)

Text

Larry D. Smith Exelon Generation Regulatory Assurance Manager Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5219 Office www.exeloncorp.com larry.smith2@exeloncorp.com 10 CFR 50, App E April 2, 2018 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRG Docket Nos. 50-317 and 50-318

Subject:

Emergency Response Data System The attached revision to the Emergency Response Data System (EROS) Data Point Library for the Calvert Cliffs Nuclear Power Plant is provided pursuant to 10 CFR Part 50, Appendix E, Section Vl.3.a. The revision is necessary based on a modification to the Refueling Water Tank level instrumentation.

The table below provides a brief summary of the changes:

Point Identifier Unit

• Q~scriptiori *** Old R.ange New Range 1SP2RWLVL 1 BWST LEVEL 0-40 feet 0-504inches The EROS Data Point Library sheet is attached.

There are no regulatory commitments contained in this correspondence.

Should you have questions regarding this matter, please contact Mr. Larry D. Smith at (410) 495-5219.

Respectfully,

~~&?---

Calvert Cliffs Regulatory Assurance Manager LDS/PSF/bjm

Attachment:

(1) Emergency Response Data System Data Point Library (1 page)

Document Control Desk April 2, 2018 Page 2 cc: NRC Project Manager, Calvert Cliffs NRC Resident Inspector, Calvert Cliffs NRC Regional Administrator, Region I S. Gray, MD-DNR

ATTACHMENT (1)

EMERGENCY RESPONSE DATA SYSTEM DATA POINT LIBRARY (1 page)

Calvert Cliffs Nuclear Power Plant April 2, 2018

Data Point Library Reference File Date: 3/19/2018 Reactor Unit: CC1 Data Feeder: CC11 NRC EROS Parameter: BWSTLEVEL Point ID: 1SP2RWLVL Plant Specific Point

Description:

REFUELING WATER TANK LEVEL Generic/ Condition

Description:

BORATED WATER STORAGE TANK LEVEL Analog/ Digital: A ENGR Units/ Digital States: INCHES ENGR Units Conversion: NIA Minimum Instrument Range: 0 Maximum Instrument Range: 504 Zero Point

Reference:

RE:USD Reference Point Notes RE:USD (REFERENCE UNIQ SYS DESC)

Proc or Sens: p Number of Sensors: 2 How Processed: NIA Sensor Locations NIA Alarm / Trip Setpoints: NIA NI Detector Power Supply Cut-Off Power Level: NIA NI Detector Power Supply Turn-on Power Level: NIA Instrument Failure Mode: NIA Temperature Compensation for DP Transmitters: N Level Reference Leg: WET Unique System

Description:

THE REFUELING WATER TANK SUPPLIES 2300-2700 PPM BORATED WATER TO THE SAFETY INJECTION SYSTEM AND ALSO SUPPLIES WATER FOR USE DURING REFUELING. TANK CAPACITY IS 420,000 GALS. AT 2.5 FEET THE SAFETY INJECTION LINE-UP IS SWITCHED TO THE RECIRCULATION MODE. THIS LEVEL IS EQUAL TO APPROX 10% OFTANK VOLUME.