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
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