ML062280240

Special Report for Inoperable Radiation Monitor

ML062280240
Person / Time
Site:	Millstone
Issue date:	08/08/2006
From:	Price J Dominion, Dominion Nuclear Connecticut
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
06-669
Download: ML062280240 (2)

Text

Dominion Nuclear Connecticut, Inc. Dominion-Millstone Power Station Rope Ferry Road Waterford, CT 06385 AM -8 U.S. Nuclear Regulatory Commission Serial No.06-669 Attention: Document Control Desk NSS&L/DF RO Washington, DC 20555 Docket No. 50-336 License No. DPR-65 DOMINION NUCLEAR CONNECTICUT. INC.

MILLSTONE POWER STATION UNIT 2 SPECIAL REPORT FOR INOPERABLE RADIATION MONITOR In accordance with the reporting requirements of the Millstone Power Station Unit 2 (MPS2) Technical Specifications (TS), Section 3.3.3.1, Table 3.3-6, Action 17, Dominion Nuclear Connecticut, Inc. (DNC) hereby submits a Special Report for the number of operable radiation monitoring channels less than required by TS 3.3.3.1, Table 3.3-6, Action 17, Step 2 states, "Prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within 14 days following discovery outlining the action taken, the cause of the inoperability and the plans and schedule for restoring the system to operable status."

On July 21, the noble gas effluent radiation monitor for the MPS2 stack, monitor RM-8168, was returned to operable status after installation of hardware upgrades and subsequent post modification testing and restoration activities.0)

On July 25, 2006, RM-8168 was removed from service due to intermittent detector failure. At that time, one channel was declared inoperable and action under TS 3.3.3.1 was taken. Troubleshooting and repair of the component was completed on August 4, 2006. Currently the system is being monitored to ensure the corrective actions were effective. Restoration of the system to an operable status is currently scheduled for August 11, 2006. During this period, compensatory measures in accordance with station procedures are in place. The actions associated with the repair of RM-8168 are being tracked by DNC's corrective action program.

If you have any questions or require additional information, please contact Mr. David W.

Dodson at (860) 447-1791, extension 2346.

Very truly yours, (1)DNC letter, "Dominion Nuclear Connecticut Inc, Millstone Power Station Unit 2, Special Report for Radiation Monitor," dated July 20, 2006

Serial No.06-669 Special Report for Inoperable Radiation Monitor Page 2 of 2 Site Vice President - Millstone Attachments: None Commitments made in this letter: None.

cc: U.S. Nuclear Regulatory Commission Region I Regional Administrator 475 Allendale Road King of Prussia, PA 19406-1415 Mr. V. Nerses NRC Senior Project Manager Millstone Units 2 and 3 U.S. Nuclear Regulatory Commission, Mail Stop 8 C2 One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Mr. S. M. Schneider NRC Senior Resident Inspector Millstone Power Station