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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO
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Category:LER)
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Category:TEXT-SAFETY REPORT
MONTHYEARML20205E6331998-12-31031 December 1998
GE Test Reactor (Deactivated) Annual Rept 40 for 1998. with
ML20205E5951998-12-31031 December 1998
ESADA-Vallecitos Experimental Superheat Reactor (Deactivated) Annual Rept 31 for 1998. with
ML20217A3861997-12-31031 December 1997
Annual Rept Number 39 for General Electric Test Reactor (Deactivated)
ML20217A4261997-12-31031 December 1997
ESADA-Vallecitos Experimental Superheat Reactor (Deactivated), Annual Rept 30 for 1997
ML20137F7491996-12-31031 December 1996
Annual Rept Number 29 for ESADA-Vallecitos Experimental Superheat Reactor (Deactivated)
ML20137F7191996-12-31031 December 1996
Annual Rept Number 38 for General Electric Test Reactor (Deactivated)
ML20235Z3641988-12-31031 December 1988
ESADA-Vallecitos Experimental Super Heat Reactor (Deactivated) Annual Rept 21,1988
ML20235Z4601988-12-31031 December 1988
GE Test Reactor (Deactivated) Annual Rept 30
ML20246L6341988-12-31031 December 1988
GE 1988 Annual Rept
ML20148C4031988-01-14014 January 1988
Safety Evaluation Supporting Amend 4 to License DR-10
ML20196J5151987-12-31031 December 1987
GE 1987 Annual Rept
ML20196C3231987-12-31031 December 1987
Esada-Vallecitos Experimental Superheat Reactor (Deactivated), Annual Rept 20 for 1987
ML20149N1181987-12-31031 December 1987
GE Test Reactor (Deactivated) Annual Rept 29
ML20236N0741987-08-0303 August 1987
Safety Evaluation Supporting Amend 15 to License TR-1
ML20205G2351986-12-31031 December 1986
GE Annual Rept 1986
ML20211Q5401986-12-31031 December 1986
GE Test Reactor (Deactivated) Annual Rept 28
ML20211H5601986-12-31031 December 1986
Esada-Vallecitos Experimental Superheat Reactor (Deactivated), Annual Rept 19
ML20137R7391986-02-0505 February 1986
Safety Evaluation Supporting Amend 14 to License TR-1
ML20210G8771985-12-31031 December 1985
Getr Annual Rept 27
ML20210G8671985-12-31031 December 1985
ESADA Vallecitos Experimental Superheat Reactor Annual Rept 18 (Deactivated)
ML20210D7221985-12-31031 December 1985
GE 1985 Annual Rept
ML20126H0831981-02-20020 February 1981
Annual Financial Rept 1980
ML20147D5201977-05-31031 May 1977
Review of Severe Weather Meteorology at Gen Elec Co Vallecitos,Ca. Provides Calculations & Info for Determining Characteristics of design-basis Storm
1998-12-31
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Text
l N~ U C L E A R ENERGY GENERAL ,' ELECTRIC ENGINEERING GENERAL ELECTRIC COMPANY, P.O. 3OX 460, PLEASANTON, CALIFORNIA 94566 DIV1S1ON
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<*' _e H. R. Denton, Director Office of Nuclear Reactor Regulation s
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U.S. Nuclear Regulatory Commission I *
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Washington, D.C., 20555 7 gg @q o 12 9
REFERENCE:
License R-33, Docket 50-73 *
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Dear Mr. Denton:
g p During a routine inspection of the General Electric Nuclear Test Reactor (NTR) prior to start-up on April 12, 1982, it was discovered that one of the two scram springs on Safety Rod #4 was broken. The broken spring did not prevent the rod f rom operating. However, the scram time for the rod was 432 msec versus a limit of 270 msec required by the technical specifications. There was no safety problem as only one of the four safety rods is required to scram the reactor. This event is considered to be reportable pursuant to Technical Specification 11.0(1) of License R-33 The broken spring was replaced on April 12, and all four rods scrammed within the required time iimit.
The rods receive scram tests monthly and are visually inspected on a daily basis.
Safety Rod #4 had operated satisfactorily on its last test.
In order to prevent recurrence of this event, all of the scram and leader springs on the four safety rods will be replaced. This should be completed by June 1, 1982. In addition, a periodic replacement of the springs will be Incorporated into the NTR preventative maintenance program.
Sincerely, h RA R. W. Darmitzel, Manager I rradiation Processing Operation RWD:s1 cc: USNRC-Region V g6 1
! O 82 04 2,sove(g
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