ML072270635

Annual Report 2007

ML072270635
Person / Time
Site:	Aerotest
Issue date:	07/27/2007
From:	Meren A Aerotest
To:	NRC/OE
References
Download: ML072270635 (6)

Text

AEROTEST OPERATIONS, INC.

3455 FOSTORIA WAY - SAN RAMON, CA 94583 * (925) 866-1212

• FAX (925) 866-1716 27 July 2007 Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Annual Summary of Changes, Tests, and Experiments at Aerotest Radiography and Research Reactor (ARRR), Docket no. 50-228, for the period of 1 July 2006 to 30 June 2007.

Gentlemen:

The enclosed report summarizes the ARRR operations from July 1, 2006 through June 30, 2007. This submittal complies with the requirements set forth in 10 CFR 50.59, "Authorization of Changes, Tests, and Experiments." Summary forms of monthly operations and unscheduled power reductions are included.

No new or unusual problems have been noted during the year and reactor operations have remained stable with respect to safety and reliability.

Sincerely, Alfredo W. Meren Reactor Supervisor Aerotest Operations, Inc.

ANNUAL

SUMMARY

OF CHANGES, TESTS AND EXPERIMENTS PERFORMED AT THE AEROTEST RADIOGRAPHY AND RESEARCH REACTOR (ARRR)

DOCKET NO. 50-228 BY CHRISTOPHER E. BAUMAN APPROVED BY RAY R. TSUKIMURA PRESIDENT AEROTEST OPERATIONS, INC.

SECTION I Part I - Changes

1. Updated Procedures and Safety Analysis Report have previously been submitted to Nuclear Regulatory Commission as part of facility's relicensing application package. No changes have yet been implemented.

2. Alfredo W. Meren assumed the position of Reactor Supervisor for Christopher E.

Bauman who will stay on as Senior Reactor Operator and Manager of Research and Development.

Part II - Experiments No new experiments were performed during the year. The experiments performed in this reporting period were as follows:

Experiment No.

114 Neutron radiography performed in the radiography facilities.

SECTION II ARRR MONTHLY OPERATING

SUMMARY

Date Operating kilowatt- Accumulated Experiments & Unscheduled Hours hours kW-h Irradiations Shutdowns 7-06 131 17,645 12,977,375 0 1 8-06 159 22,375 12,999,750 0 5 9-06 134 18,011 13,017,761 0 2 10-06 160 21,603 13,039,364 0 4 11-06 131 17,646 13,057,010 0 5 12-06 133 17,993 13,075,003 0 3 1-07 141 18,922 13,093,925 0 1 2-07 174 23,433 13,117,358 0 2 3-07 166 22,347 13,139,705 0 1 4-07 185 24,969 13,164,674 0 12 5-07 148 21,191 13,184,951 0 1 6-07 172 27,367 13,212,318 0 1 Totals 1834 253,502 13,212,318 0 38

ARRR UNSCHEDULED POWER REDUCTIONS TYPE OF SCRAM CHANNEL AFFECTED No. DATE AUTO MAN Spurious Op. Erroi CAL 1 2 3 4 Earthquak H20 Comments 1 7/19/2006 X X X XX X Momentary Building Power Loss 2 8/24/2006 X X X X X X no visible alarm 3 8/25/2006 X XX X X X no visible alarm 4 8/25/2006 X X X X X X _no visible alarm 5 8/27/2006 X X X X X X no visible alarm 6 8/30/2006 X X - XX X _ Channel 3/4 Low 7 9/1/2006 x X X X XX no visible alarm 8 9/28/2006 X X X X XX no visible alarm 9 10/27/2006 X X X X X X Channel 2 Period Fast 10 10/29/2006 X X X X X X no visible alarm 11 10/30/2006 X X X X XXX _no visible alarm 12 10/31/2006 X X X X X X no visible alarm 13 11/1/2006 X x - xxxx _ ___no visible alarm 14 11/1/2006 X _ X X X X X no visible alarm 15 15 16 11/1/2006 11/1/2006 11/1/2006 X

X X

X X

- X X 5~X___

X X X! Xc X X; X X no visible alarm no visible alarm 17 11/29/2006 X X X X X X no visible alarm 18 12/1/2006 X X X X X X no visible alarm 19 12/14/2006 X X X X X X no visible alarm

• 20 12/29/2006 X X X X X X Channel 2 Period Fast 21 1/4/2007 X X X X XX _ _ Channel 4 90% Voltage 22 2/7/2007 X X X X XX Channel 4 90% Voltage 23 2/9/2007 X X X X X X I Channel 4 90% Voltage 24 3/13/2007 X X X X X X Channel 4 90% Voltage 25 4/4/2007 X X X X X X no visible alarm 26 4/5/2007 X I X XXXX XChannel 4 Low 27 4/6/2007 X X X X X X no visible alarm 28 4/9/2007 X X XXIX X XChannel 4 Low - switching 29 4/10/2007 X X X X XX no visible alarm

• 30 4/10/2007 X X X X XX no visible alarm

• 31 4/11/2007 X X X X X X no visible alarm 32 4/11/2007 X X X X XX no visible alarm 33 4/12/2007 X X X X XX no visible alarm 34 4/13/2007 X X X X X X no visible alarm 35 4/13/2007 X X XX X X no visible alarm 36 4/30/2007 X X X X X X no visible alarm 37 5/15/2007 X X X X X X Channel 2 Period Fast 38 6/4/2007 X X X X X X Channel 4 High - transient 39 _

401

• Concurrent with shutter operation