IR 05000245/1988019
| ML20205Q297 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/27/1988 |
| From: | Jang J, Pasciak W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20205Q290 | List: |
| References | |
| 50-245-88-19, 50-336-88-23, 50-423-88-17, NUDOCS 8811090184 | |
| Download: ML20205Q297 (7) | |
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U.S. NUCLEAR kEGULATORY COMMISSION
REGION I
Report No.
50-245/08-19 50-336/88-23 50-423/88-17 Docket No.
50-245 50-336 50-423 License No. DRP-21 Priority Category C
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DRP-65 NPF-49 Licensee:
Northeast Nuclear Energy Company (NNECo)
P. O. Box 270 Hartford, Connecticut 06101 Facility Name: Millstone Nuclear Power Station, Unit 1, 2, and 3 Inspection At:
Millstone Site, No,*theast Utilities Service Compay) (NUSCo)
and Production Operation Services Laboratory (POSL Inspection Conducted:
September 26-30, 1988 Inspectors:
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/0-N J.,C/Ja ng e for R1 iatio c alist date j
Approved by:
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W/ J. P4s iak, Chief
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Effluenf. Radiation Protection Section Inspection Summary:
Inspection on Septepber 26-30,1988_(Rep _ortNo
[0-246/88-19, 50-336/88-23, and 50-423/88-f7}1 Areas Inspected:
Routine, unannounced inspection of the operational radiological environmental monitoring program, including management organization, environmental sample collection, control of contractor activities, meterological monitoring, audits and reports.
Restits: Within the scope of this inspection, no violations were identified.
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PDR ADOCK O'X
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05000245
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1.0 Individuals Contacted
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- R. Crandall, Supervisor, Radiological Engineering Section,'NUSCO
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- J. Doroski, Sr. Engineer, Radiological Engineering Section, NUSCO
- W.'Eakin,~ Engineer, Radiological Engineering Section, NUSCO
- H. Haynes, Station Services Superintendent, Millstone
M. Hornyak, QA Engineer / Technologist, NUSCO
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- J. Keenan, Unit 2 Superintendent, Millstone D. Lenth, Supervisor, POSL
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R. Nejfelt, Environmental Technician A. POSL i
R. Parker, Environmental Specie. list, POSL R. Rodgers, Manager, Radiological Assessments, NUSCO
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R. Santavast, Sr. Scientist, Environmental Programs
- J. Waters, Chemistry Supervisor, Millstone
- Attended the exit meeting on September 28, 1988 at NUSCO
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- Attended the exit meeting on September 30, 1988 at Millstone
Other licensee employees were also contacted or interviewed during this
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inspection.
f 2.0 Management Controls 2.1 Assignment of,rtesponsibility
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The inspector reviewed the licensee's organization for the i
management of the Radiological Environmental Monitoring Program f
(REMP). The inspector determined that management organization of the l
REMP remains essentially the same as it was at the time of the last t
inspection.
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t 2.2 Audits
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2.2.1 Site Nuclear Review Board (SNRB) Audit
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The inspector reviewed the following procedures and audits:
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NEO 2.02; Nuclear Engineering and Operations Procedure
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Charter for Nuclear Review Boards, Rev. 3. May 2, 1988.
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NEO 3.01; Nuclear Engineering'and Operations Procedure
Conduct and Format of Nuclear Review Board Audits, Rev. 3 j
March 28, 1988.
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f SNRB Audit A24001, June 23 - July 11, 1986.
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I SNRB Audit A24008, November 16, 1987 - February 8, 1988.
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Based on a review of the NRB Audits, the inspector noted d
that the licensee followed appropriate procedures including requirements, findings, resolutions root causes,.and
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corrective actions.
The inspector determined that.the above referenced audits were very thorough and follow ups were
excellent.
The audits were performed by a qualified lead t
auditor, and appeared to be quite thorough and of sufficient
. technical depth to adequately assess performance of the REMP.
The inspector also noted that the SNRB Audit for 1988 (Audit
- A24013) was scheduled.
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2.2.2 Audit of Contractor Facilities The audits of contractor laboratories (Teledyne and Clean Harbors of Natick) is performed in accordance w 4h the procedure RAB 1-4, "Radiological-Environmental Monitoring
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Audit Program." The inspector reviewed several 1986, 1987,
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and 1988 audits of contractor facilities and determined that l
they were being performed in accordance with the above procedure and that findings were being followed and adequately resolved.
- 2.2.3 Internal Audit
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The Environmental Audits Group (Environmental Programs),
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independent from the Quality Services Department, et lucts
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internal audits for the meteorological systems at the Production Operation Services Laboratory (POSL), in accordance with EPD
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6.02, Environmental Programs Department Procedures, Annual
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Meteorological System Audit, Rey, 2, March 1987.
The inspector l
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reviewed 1987 aujit results and determined that the audits were
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performed as required by the above procedures.
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2.3 Quality Assurance
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The licensee described the methods used by its contractor
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i laboratories, Teledyne Isotopes and Clean Harbors of Natick, to i
assure the accuracy of its analytical measurements.
These include j
j participation in the EPA crosscheck program, in an intralaboratory
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program for analysis of spiked, split, and blank samples, and a i
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i program for analysis of duplicate and replicate samples from various locations and sample media within the REMP.
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The inspector reviewed selected quality control data submitted to
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the licensee by its contractor.
These data indicate that the c
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contractor's results are for the most part in agreement with the
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EPA values, and that its intralaboratory results are normally in r
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agreement with the actual values.
For those instances in which the
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results did not agrie, reasons for the differences were investigated i
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and the discrepancies were resolved. Generally good agreement was noted among the licensee's duplicate and replicate samples.
2.4 Review of Annual Reports The inspector reviewed the 1985, 1986 and 1987 Annual Radiological Environmental Operating Reports regarding sample media, sampling frequencies, sampling stations, and analytical results.
The inspector determined that these were complete and comprehensive summaries of sampling, analyses, and results of the REMP, including various aspects of quality control.
3.0 Implementation of the Radiological Environmental Monitoring Program The inspector reviewed the licensee's commitments pertaining to its operational radiological environmental monitoring program, by discuss ins with the licensee, by review of reports, and by direct observation.
The inspector concluded that an effective program is in place, and that it conforms to the licensee's Radiological Effluent Technical Specifications.
The inspector examined selected environmental monitoring stations including air samplers for fodines and particulates. All equipment at these stations was operstional at the time of the inspection. The inspector reviewed procedures and records for calibration and maintenance of the air samplers and vacuum gauges, and found that these calibrations were performed regularly and on schedule.
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The inspector toured oyster sampling stations.
The inspector noted that the licensee is cultivating oysters at quarry discharge locations using metal wire trays.
These oyster trays are kept at these sampling stations to guarantee samples and facilitate sample collection.
The licentee performed an extensive study on the maximum individual dose (GI-LLI) comparisons using the licensee's radiological environmental monitoring results and the NRC's liquid effluent model (LADTAP) for Ag-110m. The licensee concluded that the data for Ag-110m indicated that the LADTAP Model was underestimating the dose due to the low bioaccumula-tion factor.
The licensee revised his effluent model by increasing the LADTAP generic value for Ag-110m bioaccumulation in shellfish by a factor of 20.
Currently a similar investigation is underway for Zn-65. Zinc-65 has recently become a measurable contributor to the dose pathway due to the implementation of zinc injection passivation at Millstone Unit 1.
The inspector noted that the licensee will publish this study in the future.
4.0 _ Environmental Dosimetry The U.S. Nuclear Regulatory Commission (NRC) Direct Radiation Monitoring Network is operated by the NRC (Region I) to provide continuous measure-ments of the ambient radiation levels around nuclear power plants (71 sites) throughout the United States.
Esch site is monitored by arranging approximately 30 to 50 thermoluminescant iosimeter (TLD) stations in two
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concentric rings extending to about five miles from the power plant. The monitoring results are published in NUREG-0837 quarterly.
One of the purposes of this program is to serve as a basis of comparison witn similar programs conducted by individual utilities which operate nuclear power plants. At Millstone site, four NRC TLDs are collocated with each licensee's TLD stations.
The licensee monitors the environmental radiation levels monthly (2 TLDs each station) using EG&G TLDs (Model iL-34; CaF2:Mn) and Victoreen TLD readers (Model 2800 and 2810).
During this inspection the monitoring results of collocated TLDs were compared and the results are listed in Table 1.
Although there are some differences between the NRC and licensee's programs, such as monitoring pe,iod, starting date of quarter, and monitoring height, results are generally in good agreement.
The inspector noted that the licensee did not report a standard deviation in the annual reports.
However, the licensee calculates the mean and a standard deviation in separate notebooks.
The licensee stated that standard deviations will be included in the future.
The Environmental Dosimetry Program is being performed by the POSL. The inspector reviewed the following procedures:
ES#141; Thermoluminescent Dosimter Readout, Rev. 10, April 1986,
ES#142; Thermoluminescent Dosimter calibration, Rev. 5, March 1988,
ES#143; TLD Self Irradiation Determination, Rev. 5, July 1987.
- Through review of the above procedures and calibration results, the inspector noted that the licensee did not complete the TLD fading.tudy.
The inspector recommended that the licensee complete the study and apply the corrections if there are any differences.
The licensee participates in the International Environmental Dosimeter Intercomparison Program.
The inspector reviewed the results of the sixth (1932), seventh (1984), and eighth (1986) intercomparisons. All results were in good agreement with known field and labo-atory exposures.
5.0 Meteorological Monitoring The POSL has responsibility for the maintenance and calibration of the meteorological monitoring system.
Calibrations of the system are performed quarterly.
The inspector reviewed the following procedures and calibration results:
ES#201; Wind Direction System Calibration,
ES#202; Dew Point System Calibration.
- ES#203; Temperature / Delta Temperature System Calibration,
ES#205; Wind Speed System Calibration
ES#206; Analog Recorder Calibration
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ES#211; MET Tower Equipment Surveillance
ES#214; Meteorological Tower Inspection
ES#403; Meteorological Tower Preventative Maintenance
Calibr,1 tion Results; June 1987, November 1987, and 1988 data
Within the scope of the above review, the inspector noted that calibrations were performed as scheduled and results were within the tolerance values.
The inspector reviewed all meteorological parameters (temperature / delta temperature, wind speed, and wind direction at 33,142 and 374 foot levels) at four terminals; meteorological tower station and the three control rooms. The inspector found there was no disagreement between the four terminals.
6.0 Exit Interview The inspector met with licensee representatives denoted in Paragraph 1 at the conclusion of the inspection on September 28, 1988 at the NUSCO and September 30, 1988 at the Millstone site.
The inspector summarized the purpose and scope of the inspection and discussed the inspection results.
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Table 1 Environmental Monitoring Results for Collocated TLDs Unit = mR/90 days
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I lYr/Qtr i NRC-4 M-11I.I NRC-5 M-10I I NRC-11 M-55X l NRC-12 M-54X l NRC-41 M-14C 1 -NRC-40 M-16C I l
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I i 1986 l l
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l 1 1 16.910.6 17.1 l 17.910.6 18.4 1 16.010.5 15.6 l 17.810.6 18.1 l-23.8 0.8 22.8 1 16.110.5 16.7 l l
2 1 17.210.6 18.6 1 18.5 0.6 19.4 l 17.210.6 17.2 l 19.510.7 20.1 l 24.810.8 24.8 1 16.410.6 16.0 1 I
3 1 19.410.7 18.7 l 17.210.7 16.6 l 17.210.7 16.6 l 19.510.7 19.9 i 26.110.9 25.3 l 16.710.7 18.3 1-
4 1 18.010.7 18.0 1 18.710.7 19.2 1 17.710.7 16.3 l 20.510.8 19.6 1 23.710.8 24.3 l 15.310.6 17.9 I I
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i 1987 I l
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1 1 17.3 0.7 17.7 l 18.010.8 19.5 l 16.8 0.7 16.4 1 19.610.8 19.1 1 22.810.9 22.5 l 16.010.7 17.0 l l
2 1 17.510.5 17.7 1 20.110.7 19.6 1 16.210.6 16.5 1 20.010.7 19.7 1 24.910.9 24.8 l 16.310.7 17.3 l l
3 1 18.210.6 19.6 1 17.6 0.6 20.5 1 16.710.5 17.1 1 18.610.6 20.2 1 22.210.7 25.3 1 16.310.5 18.3 l l
4 1 20.910.7 19.2 1 19.610.7 19.8 l 18.310.6 16.6 l 21.910.7 20.1 1 26.610.9 24.9 1 19.110.7 18.0 l I
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I 1988 I I
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1 1 19.010.8 18.2 1 19.410.8 18.9 l 17.010.7 15.9 l 18.810.8 18.8 1 23.510.9 23.8 1 15.610.7 17.1 l
2 1 17.7 0.6 18.1 1 19.3i0.8 18.8 l 18.210.6 16.6 l 19.910.7 19.2 l 23.610.8 24.3 1 16.110.6 17.0 l l
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(1) NRC: Panasonic TLO, CaSO :Tm, Reporting Unit = mRis.d., Quarterly Monitoring
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Millstone, EG & G TLD, CaF :Mn, Reporting Unit = mR (sus of 3 month results), Montly Monitoring
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