ML20029E450

Special Rept:On 940503,radiation Monitor RM-064 Removed from Svc to Support Installation of Mod MR-FC-84-155D.Alternate Method of Monitoring in Place Per TS Table 2-10.Monitor Will Be Returned to Operable Status by 940630

ML20029E450
Person / Time
Site:	Fort Calhoun
Issue date:	05/13/1994
From:	Gates W OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LIC-94-0099, LIC-94-99, NUDOCS 9405180319
Download: ML20029E450 (2)

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Omaha Public Power District 444 South 16th Street Mall Ornaha, Netwaska 68102 2247

/02/G3G 2000 May 13, 1994 LIC-94-0099 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station: Pl-137 Washington, DC 20555

Reference:

Docket No. 50-285 Gentlemen:

SUBJECT:

Special Report on Inoperability of Main Steam Line Radiation Monitor RM-064 for Post-Acciden+ Monitoring The Omaha Public Power District (OPPD), holder of Operating License DPR-40, submits this report pursuant to the requirements of Fort Calhoun Station (FCS)

Technical Specification 2.21, " Post-Accident Monitoring Instrumentation."

Technical Specification 2.21, Table 2-10, Item 3, requires that the Main Steam Line Radiation Monitor (RM-064) be operable in Modes 1, 2 and 3. If the number of oprable channels is less than the minimum operable channels requirement, OPPD must initiate the pre-planned alternate method of monitoring the appropriate parameter and either restore the inoperable channels to operable status within seven days of the event or prepare and submit a Special Report to the Commission pursuant to Technical Specification 5.9.3 within fourteen days following the event.

On May 3, 1994, Radiation Monitor RM-064 was removed from service to support installation of Modification MR-FC-84-1550. This modification will enhance the Radiation Monitoring System and increase the reliability of the Main Steam Line Monitor. The scope of MR-FC-84-1550 includes replacement / upgrade of the subject radiation monitoring channel. The duration of the inoperability of this channel has exceeded seven days, thus requiring this Special Report.

In accordance with Technical Specification Table 2-10, Footnote (a), a preplanned alternate method of monitoring the appropriate parameters is in place due to the inoperability of RM-064. The alternate method is detailed in Operating Instruction 01-PAP-8, " Post Accident Procedures," Section 3.5. Radiation Monitor RM-064 will be returned to operable status by June 30, 1994.

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U. S.'fiuclear Regulatory Commission LTC-94-0099 Page Two I

If you should have any questions, please contact me.

Sincerely,

/A $. M W. G. Gates Vice President WGG/jrg c: LeBoeuf, Lamb, Greene & MacRae L. J. Callan, NRC Regional Administrator, Region IV S. D. Bloom, NRC Project Manager R. P. Mullikin, NRC Senior Resident Inspector t

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