PDF《Page I》

1210712010 U.

S. NuclearRegulatory Commission OperationsCenterEvent Report PageI General Information or Other (PAR) Event#

46461 Rep Org: ULTRA ELECTRONICS Notification Date / Time: 12/07/2010 09:58 (EST) Supplier: ULTRA ELECTRONICS Event Date / Time: 12/06/2010 (CST) Last Modification: 12/07/2010 Region:

4 Docket #: City: ROUND ROCK Agreement State: Yes County: USA License #: State: TX NRC Notified by: MARK MCCRAY Notifications: CHRISTOPHER CAHILL R1DO HQ Ops Officer: JOHN SHOEMAKER SCOTT SHAEFFER R2DO Emergency Class: NON EMERGENCY ROBERT DALEY R3DO

10 CFR Section: MICHAEL HAY R4DO 21.21 UNSPECIFIED PARAGRAPH NRR EMAIL NRO EMAIL FAIL SAFE FUNCTION OF THE N7000 SERIES TEMPERATURE TRANSMITTER DOES NOT OPERATE CORRECTLY UNDER CERTAIN CONDITIONS The functional issue is limited to N7000 transmitters where the field selectable jumper is set for downscale indication upon loss of input (open circuit, over range RTD, or short circuit). The transmitter may indicate a mid- range output upon open circuit or over range RTD input instead of going downscale (4 mA) as intended. Short circuit detection operates correctly in all cases. This issue does not affect temperature transmitters during normal operating conditions, only the downscale input sensor failure indication function. N7000 transmitters that have been set for upscale sensor failure indication are not affected;

however, this notification is applicable to all N7000 customers because the sensor failure indication is field selectable. The following sites are affected: Oconee, Calvert Cliffs, Perry, North Anna, Surry, Framatome ANP, Kewaunee, Diablo Canyon, and Hope Creek. Ultra Electronics NUCLEAR SENSORS &

PROCESS INSTRUMENTATION December 7,

2010 707 Jeffrey Way P0 Box

300 Round Rock, TX 78680-0300 U.S. Nuclear Regulatory Commission USA Washington, DC 20555-0001 Tel +1

512 434

2800 Attn: Document Control Desk Fax +1

512 434

2801 www.ultra-nspi.com Re: Notification under

10 CFR Part

21 concerning Weed Instrument N7000 Series RTD Temperature Transmitters Weed Instrument Co., Inc. d/b/a Ultra Electronics, Nuclear Sensors &

Process Instrumentation is writing to inform you of a functional issue with Weed Instrument N7000 Series RTD Temperature Transmitters. Name and address of the individual informing the Commission: Mark A. McCray, P.E. Vice President, Engineering Ultra Electronics NUCLEAR SENSORS &

PROCESS INSTRUMENTATION

707 Jeffrey Way Round Rock, Texas 78665-2408 USA Identification of items supplied: Weed Instrument N7000 Series RTD Temperature Transmitters supplied between July

1995 and December 2010. A listing of items supplied is attached. Identification of firm supplying the items: Weed Instrument Co., Inc. d/b/a Ultra Electronics, Nuclear Sensors &

Process Instrumentation

707 Jeffrey Way Round Rock, Texas 78665-2408 USA Nature of the defect and potential safety hazard: The fail safe function of the N7000 transmitter does not operate correctly under certain conditions. The functional issue is limited to N7000 transmitters where the field selectable jumper is set for downscale indication upon loss of input (open circuit, over range RTD, or short circuit). The transmitter may indicate a mid-range output upon open circuit or over range RTD input instead of going downscale (RPOUOOC DDA II:fT. ,ADI C

1 9.

1 r I lJul... , IvnPrIU ? U ?Product Quality Advisory Shipped SOIR Configuration Model Fail Mode Hsg. Age(yr) QTY Application Notes based on factory settings 2/27/1999 336343.7.1 N7004-RP-0-U-00-C N7004 4-WIRE Pt