ML20170A404

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Independent Spent Fuel Storage Installation Updated Decommissioning Safety Analysis Report, DSAR-7.1, Rev. 0, Instrumentation and Control, Introduction
ML20170A404
Person / Time
Site: Fort Calhoun, 07100256  Omaha Public Power District icon.png
Issue date: 04/30/2020
From:
Omaha Public Power District
To:
Office of Nuclear Reactor Regulation, Office of Nuclear Material Safety and Safeguards
Shared Package
ML20170A380 List: ... further results
References
LIC-20-0005
Download: ML20170A404 (3)


Text

Page 1 of 3 DSAR-7.1 Instrumentation and Control Introduction Rev 0 Safety Classification: Usage Level:

Safety Information Change No.: EC 69283 Reason for Change: This section is being updated to reflect the permanent cessation of operations of Fort Calhoun Station. The contents of this section have been changed to remove any information which is not applicable during decommissioning.

Preparer: M. Bakhit Fort Calhoun Station

DSAR-7.1 Information Use Page 2 of 3 Introduction Rev. 0 Table of Contents

7. INSTRUMENTATION AND CONTROL............................................................................. 3 7.1 Introduction ............................................................................................................... 3

DSAR-7.1 Information Use Page 3 of 3 Introduction Rev. 0

7. INSTRUMENTATION AND CONTROL 7.1 Introduction The plant systems are instrumented to provide information on plant conditions at selected locations, to protect equipment and personnel from undesirable conditions and to control the Spent Fuel Pool cooling system and other supporting auxiliaries.

The principal control station for the facility is in the main control room, with local controls being available for many SSCs. Due to the permanent shutdown of Fort Calhoun Station, many of the instrumentation and controls components no longer have functions. The remaining equipment discussed in this chapter relate primarily to SFP instrumentation, the emergency response facility computer system (ERF), and the portions of the control boards which remain in use.

Instrumentation and controls essential to the facility are located in the main control room or locally at the equipment. The instrumentation in the control room is arranged in groups on the control boards so that when corrective action is required, all pertinent indicators, recorders and controllers are within easy reach of the operator. The control board is a duplex bench board. Visible alarms with audible signals located on the superstructure over the main control board annunciate and identify abnormal operating conditions. Telephone systems provide both internal and external communication.

The main Control Room is kept at a controlled temperature which is well within the design ambient temperature requirements of the instruments; the temperature and humidity in the computer room are closely controlled.

All instruments have been type tested to verify that they will operate satisfactorily in the range of ambient temperatures expected in the area where they are located.