M180129, GE-Hitachi Nuclear Energy Americas, LLC - Annual Shutdown Reactor Report Supplement for the Year 2017

GE-Hitachi Nuclear Energy Americas, LLC - Annual Shutdown Reactor Report Supplement for the Year 2017

ML18171A068
Person / Time
Site:	Vallecitos Nuclear Center
Issue date:	06/20/2018
From:	Feyrer M GE-Hitachi Nuclear Energy Americas
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
M180129
Download: ML18171A068 (7)

Text

• HITACHI GE Hitachi Nuclear Energy Matt 1. Feyrer Site Manager, vallecitos Nuclear Center 6705 Vallecitos Rd Sunol, CA 94586 USA M180129 T 925 918 6018 Matt.feyrer@ge.com June 20, 2018 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555-001

Subject:

GEH Annual Shutdown Reactor Report Supplement for the Year 2017

References:

1) License DPR-1, Docket 50-18 (VBWR), License DR-10, Docket 50-183 (EVESR), License TR-1, Docket 50-70 (GETR)

2) Letter, M. Feyrer (GEH} to NRC Document Control Desk "GEH Annual Shutdown Reactor Reports for the Year 2017, 3/29/18 Enclosed is a supplement to the 2018 Annual Report (Reference 2) for the deactivated Vallecitos Boiling Water Reactor (VBWR}, located at the GE Hitachi, Vallecitos Nuclear Center near Sunol, California.

If there are any questions or additional information is required, please contact me at the number above.

Matt Feyrer, Site Manager Vallecitos Nuclear Center

Enclosure:

VBWR Annual Report No. 53, Supplement dated June 2018 cc: NRC Region IV Administrator J. Parrott, NRC NMSS MJF 18-007

( . HITACHI Vallecitos Nuclear Center Sunol, Collfarnio VALLECITOS BOILING WATER REACTOR (DEACTIVATED)

ANNUAL REPORT NO. 53 FOR THE YEAR 2017 LICENSE DPR-1 DOCKET 50-18 June 2018

Vallecitos Boiling Water Reactor (Deactivated}

Annual Report No. 53 GE Hitachi Nuclear Energy has maintained the Vallecitos Boiling Water Reactor (VBWR) in a deactivated status under the authority of Amendment No. 21 to license DPR-1, Docket 50-18, issued Oct 22, 2007. In this annual report, a summary of the status of the facility for the period of January 1, 2.017 to December 31, 2017 is presented, as required by paragraph S.d.2 of the license.

1.0

SUMMARY

All reactor systems have been removed from the containment except for the reactor vessel.

The water level within the reactor vessel was monitored and has remained essentially constant throughout the report period.

Radiation and contamination levels remain at acceptable levels. Environmental data is maintained on site and available for review.

2.0 STATUS OF FACILITY In accordance with written procedures, the Facility Manager controls access to the containment building and general systems. The facility continues to be in deactivated status in safe storage condition.

3.0 RADIATION AND CONTAMINATION Complete radiation and contamination surveys of the fadtity indicate that levels remain low.

Results of the surveys are presented in attachment 1. Air sampling results are presented in attachment 2. The radiation/contamination levels listed are representative but not necessarily maximum values.

During the 2017 annual inspection in December a small volume of water was found in the basement of the VBWR containment. Due to this volume of water, no direct surveys or smears were taken in this particular area. In April, another entry was made to re-inspect the area. As water was still present, a sample was taken for analysis wiU1 the results attached below. In Page 1 of3

VBWR Annual Rec:ton No. 53 addition. CR#28719 was initiated to track this issue to resolution. Action items include removing water from the containment basement as well as a formal evaluation of how the water entered into this area. This evaluation is beginning in late June, early July.

Month I Gross beta ~-tCi/ml Gross Alpha ).l.Ci/ml l Tritium ).l.Ci/ml April2018 I 3.46E-07 8.66E-08 l <MDC Page 2 of 3

4.0 ACTIVITIES Routine inspections were conducted during this report period. No other significant activities occurred at VBWR.

S.O ORGANIZATION The organizational structure remained unchanged during 2017. The Site Manager remains M. J.

Feyrer. The VBWR Facility Manager remains M. R. Schrag. The Manager, Regulatory Compliance and EHS, T. M. leik, retired January 2018. J. G. Ayala is currently Acting Manager, Regulatory Compliance and EHS.

6.0 CONCLUSION

GE Hitachi Nuclear Energy concludes that the deactivated VBWR is being maintained in a safe shutdown condition. The inspections, access control, and administratively controlled activities ensure maximum protection for the public health (lnd safety. The procedures will be continued to maintain this high level of protection.

GE Hitachi Nuclear Energy Vallecitos Operations Page 3 of 3

SURVEYOR (print and sign) IREVIEWER NO.

e HITACHI VALLECITOS NUCLEAR CENTER Name and signatures on Original at GEH Vallecitos LOCATION DATE:

D-0105 12/09/17 TIME:

NUCLEAR SAFETY SURVEY RECORD VBWR Containment 0930 liD Routine REASON 0 Special Annual Survey ITEMS OR LOCATION DOSE RATE DIRECT READING SMEAR READINGS Item I> I n TOTAL Distance llr l\7 u u Jly Jlr tt a No. mRild/ll mll.lll mRemlh mRemlil CPM dPM CPM dPM CPM nPM CPM dPM AREA 1 Main Floor - General Area *1 < 1 F <100 <500 <20 <200 IOOcm:

2 - Area Over Reactor Vessel *J *: I F <100 <500 <20 <200 IOOcm*

3 4 Basement - General Area*

5 -Sump*

6 7 Reactor Vessel Head Area  ! <I F <100 <500 <20 <200 100 em~

8 9 Top of Fuel Pool I *:I F <100 <500 <20 <:\00 100 em~

10

~

11 Personnel Air Lock . I ,I F '100 <500 <20 < 200 100 em~

12 13 Equipment Air Lock <I <I F <100 <500 <20 <200 IOOcm 14 15 16 INSTRUMENT USED PRM-7 CP-5 R0-20 PNR-4 TBM- E-120 RM- RM- PAC -1SA LUOLUM-12 SERIAL NUMBER 4549 1385 897 Area Posted: (circle applicable) RA HRA CA RMA AIRBORNE PROBE u AC-3A (U} 10% X PROBE !lr PANCAKE 20% X OMMEmS

• No entry to basement due to raln water in basement. EFF u 43-4 (U) 10% EFF (4 p (4 p GEO! GEO.J NEO 289 (REV. 07/10)

ATTACHMENT2: Air Sample Data for Vallecitos Reactor Annual Inspection 2017 Initial 1 Hour Decay 24/48 Hour Decay Sample Alpha Beta Alpha Beta Alpha Beta Reactor Location Volume(ml) ncpm uCi/ml ncpm uCi/ml ncpm uCI/ml ncpm uCi!ml nwm uCi/ml ncpm uCi/ml VBWR First Floor 2.83E+06 1281.30 6.22E*l0 3323.20 1.68E-09 541.10 2.63E-10 1221.80 5.93E-10 2.80 1.36E*12 8.60 4.34E-12 Basement 2.83E+06 1562.70 7.59E*10 4024.50 2.03E-09 805.50 3.91E-10 1827.70 8.87E-10 0.60 2.91E-13 5.80 2.93E-12 Fuel Pool 2.83E+06 1826.10 8.87E-10 4696.60 2.37E-09 811.70 3.94E-10 1855.40 9.01E-10 1.10 5.34E-13 11.10 S.61E-12 EVESR First Floor 2.83E+06 5906.20 2.87E*09 16961.60 8.57E-09 2885.60 1.40E*09 6429.30 3.12E-09 2.30 1.12E-l2 5.00 2.53E-12 Basement 2.83E+06 4734.50 2.30E-09 12859.00 6.50E-09 2424.70 1.18E-09 5572.80 2.71E-09 1.20 5.83E-13 42.70 2.16E-11 519' Level 2.83E+06 4021.00 1.95E*09 10887.10 S.SOE-09 2119.60 1.03E..Q9 480.4.20 . 2.33E-09 1.60 7.77E-13 5.70 2.88E-12 GETR First Floor Z.83E+06 1689.80 8.21E-10 4508.90 2.18E-09 628.80 3.0SE-10 1397.40 6.79E-10 5.30 2.57E-12 15.50 7.83E-12 Basement 2.83E+06 1645.90 7.99E*10 4496.20 2.27E-09 764.30 3.71£-10 1741.70 8.46£-10 1.10 5.34E-13 17.00 8.59E-12 Third Floor 2.83E+06 1455.10 7.07E*10 3746.50 1.89£-09 798.90 3.88E-10 1859.80 9.03£-10

~

1.00 4.86E-13-*-

23.70 1.20E-11 Tennelec System "B" Efficiency & Conversion Factors Alpha Efficiency 32.76%

Beta Efficiency 31.49%

dpm/uCI 2.22E+06 Alpha cpm/uCi 7.27E+05 Beta cpm/uCi 6.99E+05 Sampling Information

!!:!Ws! 1Hr AR.Qrox.

Minytes Flow Rate Total Total Sam~le Volume Sam~le Sam~le Minutes Half~Life 3 3 Reactor Location Date Sam21ed Time On Time Off samoled (dm} Row 'ft } ml/ft (mil ~ Time Decav fmin.t VBWR First Floor 12/8/2017 16:15 16:35 20 5 100.0 28317 2.83E+06 16:45 17:35 50 40.2 VBWR Basement 12/9/2017 9:23 9:43 20 5 100.0 28317 2.83E+06 I 9:56 10:40 44 46.0 VBWR Fuel Pool 12/9/2017 9:00 9:20 20 5 100.0 28317 2.83E+06 9:30 10:18 48 41.0 EVESR First Floor 12/8/2017 16:40 17:00 20 5 100.0 28317 2.83E+06 17:10 18:00 50 48.4 EVESR Basement 12/9/2017 10:12 10:32 20 5 100.0 28317 2.83E+06 10:47 11:32 45 46.6 EVESR 519' Level 12/9/2017 9:50 10:10 20 5 100.0 28317 2.83E+06 10:30 11:10 40 43.3 GETR First Floor 12/8/2017 17:15 17:35 20 5 100.0 28317 2.83E+06 17:45 18:35 so 35.1 GETR Basement 12/9/2017 7:18 7:38 20 5 100.0 28317 2.83E+06 7:48 8:38 50 45.2 GETR Th1rd Floor 12/9/2017 7:41 8:01 20 5 100.0 28317 2.83E+06 8:21 9:00 39 45.1