ML101190083

Submittal of 2009 Radiological Environmental Operating Report

ML101190083
Person / Time
Site:	Big Rock Point  File:Consumers Energy icon.png
Issue date:	04/28/2010
From:	Patricia Anderson Entergy Nuclear Operations
To:	Document Control Desk, NRC/FSME, Office of Nuclear Material Safety and Safeguards
References
Download: ML101190083 (17)

Text

27780 Blue Star Memorial Highway Covert, MI 49043 Tel 269 764 2000 Paula K. Anderson Licensing Manager April 28, 2010 10 CFR 50, Appendix I Defueled TS 6.6.2 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

2009 Radiological Environmental Operating Report Big Rock Point Plant Dockets 50-155 and 72-043 License No. DPR-6

Dear Sir or Madam:

Entergy Nuclear Operations, Inc. is submitting the enclosed Radiological Environmental Operating Report for the Big Rock Point Independent Spent Fuel Storage Installation (lSFSI). This report was prepared in accordance with the requirements of 10 CFR 50, Appendix I, Section IV.B, and Defueled Technical Specification 6.6.2. The period covered by the enclosed report is January 1, 2009, through December 31, 2009.

This letter contains no new commitments and no revision to existing commitments.

Sincerely, pka/bed

Enclosure:

Big Rock Point 2009 Annual Radiological Environmental Operating Report : Sample Collection Anomalies : Environmental Sample Schedule and Sample Location Maps : Radiological Environmental Monitoring Program Data for BRP ISFSI CC Administrator, Region III, USNRC NRC NMSS Project Manager

I. Introduction The 2009 Big Rock Point (BRP) Annual Radiological Environmental Operating Report provides a summary and data interpretation of the BRP Radiological Environmental Monitoring Program (REMP) as conducted during the 2009 reporting period. Reporting requirements are detailed in the BRP Defueled Technical Specification 6.6.2 and Offsite Dose Calculation Manual (ODCM),Section III, Subsection 2.0.

The BRP ODCM,Section III, contains the requirements for the REMP. The radiological environmental monitoring sampling requirements are greatly reduced from the plant's operating period and now only encompass Independent Spent Fuel Storage Installation (ISFSI) operations.

On January 2, 2009, the control TLDs BR-6 located at the Consumers Energy Boyne City Service Center and BR-7 located at the Consumers Energy Traverse City Service Center were relocated to new locations in Boyne City and Ironton, Michigan respectively. The relocation was necessary as access to the Consumers Energy facilities was no longer available. Effective January 1, 2009, BRP implemented the services of Global Dosimetry Solutions as provider of environmental TLDs and processing.

Tables 1, 2, and 3, of this enclosure, provide a summary of 2009 BRP REMP sample requirements and results.

II.

A. TLDs - Gamma Dose The BRP Gamma Dose Assessment Program consists of eleven thermoluminescent dosimeter (TLD) locations: Four at the outside perimeter of the ISFSI (locations: 18, BR-19, BR-20, and BR-21), four at the ISFSI protected area fence line (locations: BR-22, BR-23, BR-24, and BR-2S), and three control TLDs, approximately 13 miles out (locations: BR-S Petoskey, BR-6 Boyne City, and BR-7 Ironton).

Environmental gamma doses are measured quarterly and annually by placement of two TLD badges per designated location. Detailed sample station identification and location information is provided in Attachment 2.

For 2009, the average quarterly gamma readings were:

29.7 millirem for protected area fence TLDs, 22.3 millirem for ISFSI outside perimeter TLDs, and 24.2 millirem for the control TLD locations.

Page 1 of 3

2009, the average gamma readings were:

86.5 millirem for protected area fence TLDs, 56.3 millirem for ISFSI outside perimeter TLDs, and 58.3 millirem for the control TLD locations.

The comparative evaluation of the protected area fence line quarterly TLD mean and the ISFSI outside perimeter TLD mean measured in 2009 are nominally higher from that of 2008. This is attributed to a different lab reading the TLDs.

A comparative evaluation was also completed of the 2009 offsite control TLD data to the ISFSI outside perimeter TLD data. The ISFSI outside perimeter mean, although slightly below from the offsite control mean, is not statistically different than the offsite control TLD mean.

A comparative evaluation was completed of the 2008 and 2009 control data. This evaluation was completed to assess the effect of relocation of control TLDs BR-6 and BR-7. The conclusion of the evaluation was that the relocated control TLD data was representative of the previous control TLD location data.

Each TLD badge contains a 4-zone calcium sulfate (CaS02) phosphor wafer (the wafer also includes an additional backup/reserve read-out zone). Sensitivity for the multi-zone TLDs are 1.0 millirem with a linear response to 1000 rem.

B. Air Samples The BRP REMP no longer requires that airborne surveillance be conducted.

Milk The no longer requires samples be collected.

D. Lake Water The BRP REMP no longer requires that lake water samples be collected.

E. Drinking Water The BRP REMP no longer requires that drinking water samples be collected.

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The collection of food crops/vegetation is not required by the BRP REMP.

G. Sediment The BRP REMP no longer requires that well water samples be collected.

H. Aquatic Biota The collection of aquatic biota (algae and periphyton) is no longer required by the BRP REMP.

III. Assessment of BRP ISFSI Operational Environmental Impact Review and comparison of the 2009 BRP radiological environmental monitoring data to previous data shows that the parameters analyzed support the conclusion that ISFSI operations have had minimal environmental impact.

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1. Sampling and Analysis Summary Number of Samples Freguencyof Medium Description Location(s) Type of Analysis Collected Analysis TLD SR-5, SR-6, SR-7, 18-25 BRP, 5-PT, Gamma Isotopic 44 Quarterly BR-18-25 6-BC,7-IR 11 Annual a Lake Water 1 gallon composite 1 Tritium, 0 No Longer Required Gamma Isotopic Well Water 1 gallon Site Well Tritium, 0 No Longer Required grab/composite Gamma Isotopic Monitoring Wells 1 gallon grab MW 1-9 Tritium, 0 No Longer Required Gamma Isotopic Sediment Grab 1-ST,24-STS, Gamma Isotopic 0 No Longer Required 25-STN, 26-LP Fish Grab 1-ST Discharge Gamma Isotopic 0 No Longer Required Table Notes a Only quarterly TLD's are required per Big Rock Point ODCM Page 1 of 1

Medium or Pathway Analysis Evaluated Lower Limit All Indicator Locations All Control Locations Nonroutine Sampled Versus Total Number of Detection Mean C Mean C Measurements (Units) Analyses Performed (LLD) b (Range) (Range)

Direct Radiation:

TLD - Protected Area TLD (quarterly) d e 16/16 1.0 16/16 29.7 12/12 24.2 None (mR) Fence (20-25) (19-39)

TLD (annual) e 4/4 1.0 4/4 86.5 3/3 58.3 None (71-132) (51-64)

TLD -ISFSI Outside TLD (quarterly) d e 16/16 1.0 16/16 22.3 12/12 24.2 None (mR) Perimeter (18-27) (51-64)

TLD (annual) e 4/4 1.0 4/4 56.3 3/3 58.3 None (47-71) (5-64)

Lake Water Sample not (pCi/L) required Well Water Sample not (pCilL) required Lake Sediment:

Sediment Sample not (pCi/g dry) required Biota:

Fish Sample not (pCilg wet) required Crayfish Sample not (pCi/g wet) required Table Notes:

a Values for sample locations with the greatest annual mean are provided in Table 3.

b Nominal LLD as defined in the Big Rock Offsite Dose Calculation Manual Section I, Table 1-3 and vendor analytical capabilities.

C Mean and range data reported are based upon detectable measurements.

d Quarterly TLD results are normalized for 91 days net.

e Annual TLDs are read annually, and quarterly TLDs are read quarterly. Annual and quarterly measurements are compared to control measurements to evaluate compliance with 10 CFR 72.104.

The results for the ISFSI TLDs and the average of the control TLDs measured in 2009 are summarized in the Table.

Page 1 of 1

Medium Tvpe of Analvsis Location High Low Mean TLD - Protected Area Fence TLD (Quarterl~) a b BRP-23 45 40 41.5 (mR) TLD (Annual) BRP-23 132 TLD - ISFSI Outside Perimeter TLD (Quarterl~) a b BRP-20 27 21 24.3 (mR) TLD (Annual) BRP-20 71 Lake Water No Longer Required (pCi/L)

Well Water No Longer Requirec!

(pCilL Sediment No Longer Requirec (pCilg dry)

Fish No Longer Required (pCilg wet)

Crayfish No Longer Required (pCi/g wet)

Table Notes:

a Quarterly TLD results are normalized for 91 days neT.

b Annual TLDs are read annually, and quarterly TLDs are read quarterly. Annual and quarterly measurements are compared to control measurements to evaluate compliance with 10 CFR 72.104. The results for the ISFSI TLDs and the average of the control TLDs measured in 2009 are summarized in the Table.

Page 1 of 1

LOCATION TYPE REASON NONE REPORT Page 1 of 1

TABLE 1-1 ENVIRONMENTAL MONITORING PROGRAM Exposure Pathway Number of Representative Samples Sampling and Type and and/or Sample and Sample Locations a Collection frequency of Frequency Analysis

1. Direct Radiation b 21 monitoring stations either with two Quarterly Gamma dose or more TLDs or one instrument for quarterly measuring and recording dose rate continuously, placed as follows c:

a) Miscellaneous site locations (4) b) A ring of stations (6) at or near the Site boundary c) Balance of stations (3) placed to serve as control stations d) Outside perimeter of ISFSI (4)d e) ISFSI protected area fence line (4)d

a. Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons. If specimens are unobtainable due to sampling equipment malfunction, every effort shall be made to complete corrective action prior to the end of the next sampling period. All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report pursuant to the Reporting Requirements of ODeM,Section III. Alternative media and locations may be chosen for any particular pathway if deSignated locations or media are not available, and appropriate substitutions are made within 30 days in the radiological environmental monitoring program.

One or more instruments, such as a pressurized ion chamber, for measuring and rccording dose rate continuously may be used in place of, Oi" in addition to, integrating dosimeters. The background dosimetry requirement also may be met through use of dosimeters shared with another facility, or from data provided by another entity, such as the State of Michigan, as appropriate for this site.

c. For the purposes of this table, a TLD is considered to be one phosphor; two or more phosphors or phosphor readout zones in a packet are considered as two or more dosimeters.

d. TLDs designated for ISFSI only operation.

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Radiological Environmental Monitoring Program for Independent Spent Fuel Storage Installation (ISFSI) 5 Pages Follow

Global Dosimetry Solulioll; 2652 McGaw Avenue' irvine, CA 92614' Tel: (949) 419-1000' Tqll Free: (888) 437-1714 ' Fax: (949) 296-1144' www.dosimctry.com Global Dosimetry Solutions Environmental Report

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Global Dosimetry Solu\lom, 2652 McGaw Avenue' Irvine, CA 92614 *1eJ: (949) 419-1000' TolIl'ree: (883) 437-1714

• Fax: (949) 296-1144' www.dosimctry.com Global Dosimetry Solutions Environmental Report

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Global Dosimetry Solution:;

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Global Dosimetry SolutiOns 2652 McGaw Avenue' In'inc, CA 92614' Tel: (949) 419-1000' Toll Free: (888) 437-1714* Fax: (949) 296-1144' www.dosimctry,colll Global Dosimetry Solutions Environmental Report RSCS CONTROL-OAIL Y I ISR-5 I 51 I 2 ISR-6. I 60 I 3 IBR-7 I 64 I 4 BR-18 I 48 .1 I 5 IBR-19 I I*

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