IR 05000245/1990013
| ML20058L339 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 07/24/1990 |
| From: | Bores R, Jang J, Peluso L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20058L338 | List: |
| References | |
| 50-245-90-13, 50-336-90-13, 50-423-90-11, NUDOCS 9008070117 | |
| Download: ML20058L339 (7) | |
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U.S. NUCLEAR REGULATORY COMMISSION REGION 1 Report Nos.
50 245/90 13; 50-336/90-13; and 50-423/90-11 Docket Nos.
50 245; 50-3361 and 50 423 License Nos.
DPR-211 DPR 65; and NPF-49 Licensee:
Northeast Nuclear Energy Company P.O. Box 270 Hartford, C5nnecticut 06141-0270 Facility Name: Millstone Nuclear Generating Station, Units 1, 2, and 3 Inspection At: Berlin, Middletown, and Waterford, Connecticut Framingham, Massachussetts inspection Conducted: June 9 13, 1990 Am" 7-/ P-90 Inspectors:
u,u c L Peluso Radiation specialist, Effluents date RadiatIonProtectionSection(ERPS)
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& /$~?O JA Facil1.les Radiological Safety and. JanY sr. Radiation Dec1411st, ERFs, cate J.
Safeguards Branch (FRSSB)
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Approved by; R. J. BorM Chief, LRP5 FR558, Division of-date RadiationSafetyand$afeguards Inspection Summary:
Inspection on July 9 13, 1990 (Combined Inspection Report Nos. 50 245/90-13: 50 336/909 3: and 50773790-11)
Environmental Monitoring Program including:pection of the Radiologicalmanagement contro Areas Inspected:
Routine, unannounced ins of contractor laboratories; surveillance procedures; meteorological monitoring program; and implementation of the above programs.
Results: Within the areas ins)ected, no violations were identified. The licensee is implementing the a)ove programs effectively.
9008070117 900725 DR ADOCK 0500
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DETAILS 1.0 Individuals Contacted
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1.1 Northeast Utilities Service Company (NUSCO), Berlin, Connecticut
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- R. Rodgers, Manager, Radiological Assessment Branch
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1.2 Millstone Site, Waterford, Connecticut T. Burns, Chemistry Supervisor, Unit 3 Unit 3 M. Gentry,Sr. Scientist, Radiation Protection Operations Manager, J. Laine R.Sachafello, Supervisor,RadiationProtection, Unit 3 J. Waters, Chemistry Manager 1.3 Production Operation Services Laboratory (POSL), Midd16 town, connecticut N. Corsi Environmental Technician A R.Marchlnkoski,EnvironmentalTechnicianA
- G. Martel, Supervisor
- R. Nejfelt, Environmental Technician A
- P. Staehly, Engineer R. Waggoner, Environmental Technician A 1.4 Yankee Atomic Environmental Laboratory (YAEL), Framingham, Massachusetts
- D. McCurdy, Laboratory Director
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E. Lorenzo, Supervisor, Analytical Services Group
- Attended the exit meeting on Jul 11, 1990
- Attended the exit meeting on Jul 12, 1990
- Attended the exit meeting on Jul 13, 1990 2.0. Purpose The purpose of this routine safety ins)ection was to reviaw the licensee's Labora)y to implement its Radiological Environmental Monitoring Program abilit (REMP, including operations of the licensee's Quality Control Contractor l
tory (YAEL), and Meteorological Monitoring Procram.
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3.0 Management Controls 3.1 Program Changes There were no significant changes in the licensee's REMP since the previous inspection conducted in September 1988.
3.2 Audits ector reviewed the licensee's SNRB Audit Report Number A24017, Theins!MODCM"ThisauditwasperformedbytheAssessmentServices
"1989 R Department and conducted in the areas of the implementation of the Offsite Dose Calculation Manual (ODCM) December 7,gical Effluent and Radiolo Monitoring Manual (REMM) on October 31-1989. The audit a)peared to be thorough and to be of good technical depth to assess tie implementation of the ODCM.
The inspector also reviewed audits conducted by NUSCO Radiological Assessment Branch (RAB) personnel and Production Operation Services Laboratory (POSL) personnel. These audits which were conducted semiannually according to Procedure RAB l d "Radiolo i l
on various aspects of the REMP, in(REMP) Evaluations",g ca Environmental Monitoring Program were performed cluding the POSL, RAB, and contractor laboratories.
These audits appeared to thoroughly assess the implementation of appropriate functions for the above groups.
No violations were identified in this area.
3.3 Review of Annual Reports The inspector reviewed the Annual Radiological Environmental Reports for 1988 and 1989. These annual reports provided a comprehensive summary of the results of the REMP around the Millstone site and met the Technical Specification reporting requirements. The inspector also reviewed available 1990 analytical results for the REMP and found them consistent with the previous year's results.
During the previous inspection conducted in September 1988 the inspectornotedthatzinc-65(Zn65)hadbecomeameasurable contributor to the ingestion dose pathway due to the Unit 1 zine injection performed in 1987. Therefore, during this inspection, the inspector reviewed the measured Zn 65 radioactivity in the aquatic sample media such as fish, tlams, mussels, oysters, scallops, and lobster.
The inspector noted that 2n-65 was the predominant contributor to the ingestion dose pathway only in oyster samples and only during the 3rd and 4th quarters of 1989. The highest measured Zn 65 concentrations in oyster samples occurred during the 4th quarter of 1989 and were: 43 aci/ gram (wet at the vicinity of discharge (Sampling Station Num)er 32); and,)73 pCi/ gram (wet) in the quarry
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discharge to the ocean (Sampling Station Number 40) Specifications, but The Sampling
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Station Number 40 is not required by the Technical it is used for other monitoring efforts, licensee did not have the such as for the bicaccumulation study.
Even though the
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reportin levels for shellfish in the 00CM Revision 1, the licensee conserva ive measure. g level (Zn 65) of 26 pC1/ gram (wet)30-da did appl the reportin for fish as The licensee submitted the Special
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Report to the NRC on January 30, 1990 regarding the dose projection to the public and corrective actions, as required by Section E of the REMM/00CM.
The inspector reviewed the Special Report during this inspection.
Significant findings and conclusions of the Special Report were as rollows.
l o The dose projections to the public were 0.16 mrem / quarter to the whole body (quarterly limit = 1.5 mrem) tract (quarterly limitand 0.45 m
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o to the maximum organ, the gastrointestinal
- 5.0 mrem) during the 4th quarter 1989 (worst case).
The inspector determined that there was no significant health and
safety impact to the public, o The zinc injection and recovery methods for Unit I will be reviewed and changes instituted, if necessary. Special attention will be given to outage periods and other conditions which have a
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potential for higher than normal releases.
o The Radiological Effluent Monitoring Manual (REMM)iteria more will be
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modified by April 1, 1990 to make the reporting cr
realistic for onsite shellfish samples.
o The ODCM will be evaluated to determine if any changes are necessary in its dose models. Any changes will be made by April 1, 1990.
o The LADTAP computer code (liquid effluent dose projection for the
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public) will be revised as necessary to assure its conservatism.
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During this inspection, the inspector reviewed the above corrective actions and found them satisfactory. The 00CM, Revision 2 effective on Jul 1,1990, specified the reporting levels for Zn-65 In shellfish as 80 Ci/ gram (wet). The inspector noted that the measured Zn-65 concen rations in oyster samples for 1990 had decreased significantly to date.
The zine injection and recovery method, control of Zn-65
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releases, and the LADTAP computer code will be reviewed during a subsequent inspection of the licensee's liquid effluent control program.
No violations were identified in this area.
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4.0 Direct Observations The inspector examined sampling stations including air samplers for iodines and particulates milk san.i,1tna locations (goat and cow milk farms), thermoluminescent dosimeter (TLD)All air sampling equipment at the stations, veoetation sampling stations, and oyster sampling stations.
selected stations was operational at the time of this inspection.
Goat and cow milk samples appeared to be available at the sampling farms.
Vegetation samples also appeared to be available during growing seasons.
Oyster samples appeared to be available from the cultivating tray at the discharge point. TLDs were placed at the designated monitoring stations.
No violations were identified in this area.
5.0 Review of St rveillance Procedures The inspectar reviewed the licensee's selected REMP surveillance procedures conducted by the RAB and POSL. The inspector noted that the licensee had extensive and detailed surveillance procedures with which to implement the REMP effe.:tively.
6.0 Quality Control (QC) of Analytical Measurements for the REMP The inspector reviewed the following procedures to determine the adequacy of the licensee's QC program, o RAB 3-1, "Qualit Control of TLD Monitoring Program" o RAB 3-2,"Qualit Control of the REMP" oES511,"PreparaionofRadioactiveSgedSamples"iking Solutions" o ES 512 Preparation of Split and Spi The inspector reviewed selected analytical data generated by contractor laboratories (Teledyne Isotopes and Yankee Atomic Environmental Laboratory)
for the spiked and split samples. The inspector noted that the results were generally in good agreement. The inspector also reviewed selected records of the )rimary contractor's (Teledyne Isotopes) participation in the EPA cross-cieck program and determined that most measurements met the licensee's acceptance criteria. The inspector also noted that the licensee conducted investigations of any anomalous QC results and resolved those anomalies. The inspector reviewed monthly spiked TLD comparisons and determined that the comparison results were within the licensee's acceptance criteria.
Based on the above review, the inspector determined that the licensee was implementing the QC program effectively. The inspector had no further questions in this are __.
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7.0 Implementation of the REMP j
The inspector reviewed the various aspects of the licensee's REMP to
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determine the effectiveness of implementation of the REMP. These aspects were sampling techniques for various environmental sample media, sampling i
frequency, maintenance and calibration records of air samplers, and land use census.
Based on the above record reviews and discussions with the licensee's re)resentatives,ffectively and satisfactory.the inspector determined that th implemented tie REMP very e No violations were identified in this area.
8.0 Meteorological Menitoring Program The ins >ector reviewed the licensee's meteorological monitoring program.
- The P0S. has a responsibility for quarterly calibration and maintenance of the equipment.
The inspector reviewed the most recent calibration results for wind speed wind direction, and delta temperature. All calibration resultswerewithinthelicensee'sacceptancecriteria.
The inspector also reviewed the maintenance records and determined that all records were well kept and all maintenance was performed as required by procedures. The inspector noted that the licensee inspected the meteorological monitoring equipment house twice each week to verify the operability of the monitoring house and control rooms (Units 1, 2,g parameters between the equipmentwere pe equipment.
Comparisons of monitorin
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and comparison results were in good agreeme)nt.
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Within the scope of this inspection, no violations were identified.
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9.0 Yankee Atomic Environmental Laboratory (YAEL)
The inspector reviewed the licensee's quality control contractor laboratory and se)lected procedu,res during this inspection. facilities, laboratory quality assu (YAEL organization The YAEL is directed by the Manager who in turn, supervises three groups; Analytical Services Dosimetry Services and Operational Support.
The YAEL Manager reports to lhe Director of the Environmental Engineering Department, Yankc9 Atomic Electric Company. Currently the YAEL has about 38 technical stafi members and several administrative staff members.
including radiological The inspector toured the YAEL facilities,hemistry laboratory, dosimetry environmental laboratory, labor:. tory.in-plant radioc l
laboratorybendcounting All laboratories were equipped with a
I state of-t art instrumentation.
L The inspector reviewed QC charts for the counting equipment, graphical trending analyses for QC data interlaboratory and intralaboratory comparisons, and selected analytical procedures.
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Based on the above review and discussions with technical staff members,
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including the Manager, the inspector concluded the following.
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o The YAEL was well-organized and had an effective,les.
established control program for REMP and Quality Control samp o Technical staff members were well trained and well-versed in the
analytical and counting )rocedures. They also understood the importance of QA/QC in tte laboratory.
o Based on the above findings the YAEL was an excellent laboratory to supportthelicensee'squalItycontrolprogram.
10.0 Refueling Water Storage Tank (RWST) Spill On June 19 1990, the licensee conducted a routine monthly environmental l
surve whIch included the collection of soil samples in the Unit 3 RWST L.
l yard.y, Analyses of these soil samples indicated the presence of plant-generated vadionuclides in an area normally free of contamination, j
The previous rostine environmental samples taken on May 29, 1990 indicated no contaminatirn. Therefore, the licensee conducted an investigation and found a srall leak in the recirculation line of the RWST. This event was described in detail in the NRC Inspection Number 50-423/90-10. The inspector, trerefore, reviewed the licensee's measurement techniques and environmenta' assessment during this inspection. All soil samples were measured adequately using a gamma spectrometry system at the Unit 3-l Radiation Pn tection Measurement Laboratory and confirmed by the Chemistry l
Laboratory. The inspector had no further questions about the measurement I
techniques.
The inspector noted that the spill, estimated at about 60 gallons of refuelins water, was captured in the soil, investigation and and did not enter the sewer system.
Baseo on the review of the licensee's measurement techniques, the following conclusions were made by the inspector.
o The licensee conducted an effective routine monthly environmental the leak, gram and, consquently, the licensee was able to identify survey oro
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o There was no negative impact on the environment and/or the public health and safety, o The licensee's measurement techniques and its assessment of environmental impact were good, 11.0 Exit Interview The inspector met with licensee's representatives denoted in Sections 1.1 and 1.3 at the conclusion of the inspection at NUSCO on July 13, 1990 and at the POSL on July 12, 1990, res>ectively. The inspector summarized the purpose, scope, and findings of tie inspection.
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