Part 21 Report - 1997-271

ACCESSION #: 9704010413 GENERAL ATOMICS March 27, 1997 NRC Operations Center U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Subject 10CFR21 Reportable Item Gentlemen: This letter is provided in compliance with the requirements of 10CFR 21.21. The information following is in accordance with the reporting requirements of 10CFR21.21(a)(4): i) Person informing the Commission: John E. Jones Sr. Vice President, Administration General Atomics 3550 General Atomics Court San Diego, CA 92121 ii) Description of the defect: In the process of performing software verification and validation (V&V) of the RM-23A Control and Display Module (part number 03575300-001), Sorrento Electronics, Inc. (SE) has determined that the Operation and Maintenance (O&M) Manual for the RM-23A may not adequately define the requirements for performing periodic surveillance of certain safety related applications. iii) Identification of the firm: Sorrento Electronics, Inc. An Affiliate of General Atomics 3650 GENERAL ATOMICS COURT, SAN DIEGO, CA 92121-1194 P.O. BOX 85608, SAN DIEGO, CA 92186-9784 (619) 456-3000 iv) The nature of defect A series of diagnostics tests are used to identify hardware failures which may not be detected during normal operation. These diagnostics tests are described in the O&M Manual and include: a) Lamp and LED test b) Keyboard input test c) Clock interrupt test d) Digital inputs test e) Digital outputs test f) Analog outputs test The O&M Manual does not adequately emphasize the need to consider performing these tests as part of normal maintenance to declare operability in safety related applications. v) The date on which the information was obtained: January 30, 1997 vi) The number and location of the components: (See Attachment 1) vii) Corrective action: SE will make the individual purchasers aware of this possible problem and will revise the RM-23A Operation and Maintenance Manual E-1 15-1256 (Rev. 1) to clarify the periodic surveillance requirements for the RM-23A. viii) Advice to Purchasers: The functions tested by the above diagnostics tests should be evaluated for the affect on plant safety. Any function which affects plant safety should be periodically tested. SE recommends that as a minimum, the clock interrupt test should be performed since the RM-23A will not schedule tasks without the interrupt being present. The interval between these tests should be determined by the Purchaser. If you have any questions concerning this report, please call Dr. Keith E. Asmussen at 619-455-2823 or Mr. Brian Laney at 619-455-4369. Any technical questions should be addressed to Dirk Koopman at 619-457- 8899. Yours Very Truly, John E. Jones Sr. Vice President, Administration cc: NRC Region IV GENERAL INFORMATION or OTHER EVENT NUMBER: 32033 LICENSEE: GENERAL ATOMICS, SAN DIEGO, CA NOTIFICATION DATE: 03/27/97 CITY: SAN DIEGO REGION: 4 NOTIFICATION TIME: 15:00 [ET] COUNTY: STATE: CA EVENT DATE: 01/30/97 LICENSE#: AGREEMENT: EVENT TIME: 12:00[PST] DOCKET: LAST UPDATE DATE: 03/27/97 NOTIFICATIONS LEANNE HARRISON, R1 RDO NRC NOTIFIED BY: SHIRLEY SMITH DAVID VERRELLI, R2 RDO HQ OPS OFFICER: DICK JOLLIFFE ROGER LANKSBURY, R3 RDO TOM STETKA, R4 RDO EMERGENCY CLASS: NOT APPLICABLE VERN HODGE NRR 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH EVENT TEXT - 10CFR21 REPORT ON GENERAL ATOMICS RADIATION MONITOR MAINTENANCE TESTS - SORRENTO ELECTRONICS, INC (SE), AN AFFILIATE OF GENERAL ATOMICS, DETERMINED THAT THE OPERATIONS AND MAINTENANCE MANUAL FOR RADIATION MONITOR #RM-23A (CONTROL AND DISPLAY MODULE PART NUMBER #03575300-001) MAY NOT ADEQUATELY DEFINE THE REQUIREMENTS FOR PERFORMING PERIODIC SURVEILLANCE TESTS OF CERTAIN SAFETY RELATED APPLICATIONS. SE IS RECOMMENDING THAT ADDITIONAL DIAGNOSTIC TESTS BE RUN AS PART OF NORMAL MAINTENANCE ACTIVITIES IN ORDER TO IDENTIFY HARDWARE FAILURES WHICH MAY NOT BE DETECTED DURING NORMAL OPERATIONS. SE IS REVISING THEIR OPERATIONS AND MAINTENANCE MANUAL TO REFLECT THIS CHANGE. GENERAL ATOMICS IS NOTIFYING THEIR FOLLOWING NUCLEAR CUSTOMERS: BEAVER VALLEY, BRUCE, CHINSHAN, DRESDEN 2 & 3, HOPE CREEK, INDIAN POINT 3, KORI, KUOSHENG, MILLSTONE 2, OCONEE, SEQUOYAH, SOUTH TEXAS, TURKEY POINT 3 & 4, AND ZION. Attachment 1 Locations of RM-23A's Number of RM-23A's Site Installed in System Beaver Valley 16 Bruce A 10 Chinshan 1 and 2 6 Dresden 2 and 3 1 Hope Creek 18 Indian Point 3 16 Kori 1 and 2 6 Kuosheng 1 and 2 7 Millstone 2 1 Oconee 1, 2, and 3 6 Sequoyah 1 and 2 8 South Texas 1 and 2 34 Turkey Point 3 and 4 3 Zion 1 and 2 1 *** END OF DOCUMENT ***

Page Last Reviewed/Updated Friday, January 31, 2020