ML20058M266
| ML20058M266 | |
| Person / Time | |
|---|---|
| Site: | 07000033 |
| Issue date: | 12/03/1993 |
| From: | External (Affiliation Not Assigned) |
| To: | NRC |
| Shared Package | |
| ML20058L716 | List: |
| References | |
| CON-FIN-A-9076 NUDOCS 9312200225 | |
| Download: ML20058M266 (9) | |
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PROPOSED CONFIRMATORY SURVEY PLAN FOR THE TEXAS INSTRUMENTS l
INCORPORATED BURIAL SITE, j
ATTLEBORO, MASSACIIUSETTS SITE IIISTORY AND DESCRIPTION The Texas Instruments Incorporated site at Attleboro, Massachusetts, was owned and operated by Metals and Controls (M&C) until 1959, at which time M&C merged with Texas Instruments, The General Plate Division of M&C began processing nuclear materials in 1952, and Inc.
between 1952 and 1959 fabricated uranium foils for reactor experiments and fuel components and complete reactor fuel cores for the U.S. Navy. Source material license D-549 was issued permitting acquisition and title to not more than 22.7 kg (50 pounds) of refined source material l
for use in the production of uranium foils; additional source material was acquired and used under contract with U.S. Government.
Special nuclear materials license No. SNM-23 was issued, permitting acquisition and title to 110 kg of enriched uranium for fabrication of the fuel-components and cores. After the merger in 1959, Texas Instruments continued fabricating reactor fuel cores, primarily for research and production reactors. Also, source materials, i.e.,
I natural uranium and thorium, were still being fabricated for sale to various corporations.
r A 1964 Texas Instruments health and safety manual states that uranium-and
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thorium-contaminated noncombustible scrap material and machinery were collected in 55-gallon l
steel drums and were disposed of through authorized agencies, or were buried on-site in
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compliance with 10CFR20.304. Burials were made from 1958 to 1961, and the burial site was closed in 1967. Records indicate two known burials, one in 1958 of contaminated ductwork, and one in 1961 of 28.4 mci of enriched uranium noncombustible scrap. Work with nuclear
.f materials was gradually reduced beginning in 1968 and was terminated in 1974. The interior of the facility was decontaminated and released for unrestricted use by the Nuclear Regulatory j
I Commission (NRC) in 1983.
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Prepared by the Environmental Survey and Site Assessment Program of Oak Ridge Institute for Science and Education, Oak Ridge, TN, under interagency agreement (NRC Fin. A-9076) between the U.S.. Nuclear Reculatory Commission and the U.S. Department of Energy.
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The Radiological Site Assessment Program of the Oak Ridge Associated Universities (ORAU) i conducted a radiological survey of portions of the facility's outdoor areas during April and May, 1984. The results of that survey indicated several areas with surface and/or subsurface uranium concentrations in excess of guidelines.
In the summer of 1992, Creative Pollution Solutions, I
Inc. was contracted by Texas Instruments Inc. to initiate remediation activities. The licensee The
.i submitted a post-excavation radiological survey report to the NRC in November of 1992.2 Environmental Survey and Site Assessment Program (ESSAP) of the Oak Ridge Institute for
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t Science and Education performed a conGrmatory survey of the excavated area in December of
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1992. The results of that survey indicated that the full extent of the burial site, particularly on the west side, adjacent to Building 11 parking lot, had not been determined.8 Subsequently, f
further remediation of the former burial site was performed by Creative Pollution solutions, Inc.
The licensee has completed the final survey activities and backfilling_ operations.'
The Texas Instruments Inc. Facility, Attleboro, MA is located in North Attleboro, approximately 48 kilometers south of Boston. The former burial site is located between Buildings 11 and 12.
The area of concern for remediation activities was approximately 10,000 m. The excavated
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area at the burial site was between 2,500 to 3,000 m and the average depth of the excavated 2
I area was approximately 1.5 meters. This area has been backfilled.
The U.S. Nuclear.
I Regulatory Commission, Region I Of5ce, has requested that the Environmental Survey and Site e
Assessment Program (ESSAP) of the Oak Ridge Institute for Science and Education (ORISE) perform an independent conGrmatory survey of the former burial site.
OBJECTIVE j
The objective of a con 6rmatory survey is to provide independent document reviews and radiologhi data, for use by the NRC in evaluating the adequacy and accuracy of the licensee's j
l radiological status report, relative to established guidelines.
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RESPONSIBILITY
't Work described in this survey plan will be performed under the direction of Michele Landis, Project Manager and Armin Ansari, Project Leader with ESSAP. The cognizant site supervisor
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has the authority to make appropriate changes to the survey procedures as deemed necessary.
After consultation with the NRC site representative, the scope of the survey plan may be altered.
Deviations to the survey plan or procedures will be documented in the site log book.
DOCUMENT REVIEW ESSAP will review the licensee's radiological survey data. Procedures and methods utilized by l
the licensee will be reviewed for adequacy and appropriateness. The post-remedial action data will be reviewed for accuracy, completeness and compliance with guidelines.
PROCEDURES i
Survey activities will be conducted in accordance with the ORISE ESSAP Survey Procedures Manual. Specific procedures applicable to this survey are listed on page 4 of this survey plan.
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Reference Grid i
A 10 m grid was established during ESSAP's radiological survey of the area in 1984 which was subsequently used by the licensee.2 The same reference grid will be used in this survey.
Surface Scans i
Surface scans of the former excavation and the surrounding area (approximately 10,000 m ) wjji f
2 be performed using Nal detectors coupled to countrate meters with audible indicators. Surface '
I scans for gamma rac'iation will be performed on 100% of the former excavation and the two -
meter perimeter immediately surrounding that area. Approximately 50% of the remaining
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surface area will also be scanned. Areas of elevated direct radiation will be noted for further investigation.
Exnosure Rate Measurements Background exposure rates, determined from previous ESSAP surveys of this facility, will be used for comparison.
l Exposure rate measurements will be performed at 1 m above the surface at a minimum of 10 E
locations. Exposure rate measurements will be performed using a Pressurized Ionization Chamber (PIC).
SOIL SAMPLING Surface soil samples will be obtained at the center of randomly selected grid blocks in the area surrounding the former excavation. A minimum of five surface soil samples will be collected in that area. One sample will be collected from the area between grid coordinates 185N,170E and 195N,180E where the licensee reported slightly elevated gamma activity.
Subsurface soil samples will be collected from boreholes drilled on and around the former excavated area. Boreholes will be diilled by the licensee to a depth of approximately 2 meters.
On the west side of the excavation, boreholes will be drilled 3 meters from the edge of the former excavation at approximately 20 meter intervals. For the remaining perimeter area, boreholes will be drilled at approximately 40 meter intervals. Additional boreholes may be drilled at other locations depending on survey findings and with consultation with the NRC site representative. Each borehole will be scanned for gamma activity using a collimated NaI detector coupled to countrate meters with audible indicators. Systematic soil samples will be collected from the surface (0-15 cm), the middle (100-115 cm) and the bottom (200-215 cm) of each borehole. Additional soil samples will be collected at locations of elevated gamma activity.
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I SAMPLE ANALYSIS AND DATA INTERPRETATION Samples and data will be returned to ORISE's ESSAP laboratory in Oak Ridge, TN for analysis and interpretation. Soil samples will be analyzed by gamma spectrometry and the results reported in pCi/g. Exposure rates will be reported in pR/h. The data generated will be compared with the licensee's documentation and NRC guidelines established for release to unrestricted use. Results will be presented in a report and provided to the NRC for review and i
comment.
s GUIDELINES The soil concentration guideline, for enriched uranium, is 30 pCi/g.5 The exposure rate limit is 5 R/h above background.'
TENTATIVE SCIIFl)ULE Measurement and Sampling December 14-16, 1993 Sample Analysis January,1994 Draft Report March,1994 l
LIST OF CURRENT PROCEDURES l
l Applicable procedures from ORISE ESSAP Survey Procedures Manual include:
Section 5.0 instrument Calibration and Operational Choix-Out 5.1 General Information 5.2 Electronic Calibration of Ratemeters 5.3 Gamma Scintillation Detector Check-Out and Cross Calibration 5.4 Alpha Scintillation Detector Calibration and Check-Out 5.5 GM Detector Calibration and Check-Out 5.13 Field Measuring Tape Calibration Texas Instnanents - December 3,1993 5
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A Section 6.0 Site Preparation i
6.2 -
Reference Grid System
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Section 7.0 Scanning and Measurement Techniques 7.1 Surface Scanning 7.2 Gamma Logging of Boreholes Section 8.0 Sampling Procedures 8.1 Surface Soil Sampling 8.2 Subsurface Soil Sampling 8.9 Sample Identification and Labeling Section 9.0 Integrated Survey Procedures 9.1 Background Measurements and Baseline Sampling i
9.2 General Survey Approaches and Strategies-i i
Section 10.0 Health and Safety and Control of Cross Contamination Section 11.0 Quality Assurance and Quality Control P
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i REFERENCES i
1.
" Radiological Survey of the Texas Instruments Site, Attleboro, Massachusetts," Oak l
Ridge Associated Universities, January,1985.
1 2.
" Post Excavation Radiological Survey Report, Texas Instrwr.ents Incorporated Burial Site, Attleboro, Massachusetts," Creative Pollution Solutions, Inc., November 28,1992.
l 3.
Letter from A. Jaberaboansari (ORISE) to J. Roth (NRC), reference: " Interim Radiological Survey Report for the Texas Instruments Incorporated Burial Site", January
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25, 1993.
l 4.
"Remediation of the Former Radioactive Waste Burial Site", Final Report, Creative Pollution Solutions, Inc., September 1993.
5.
" Guidelines for Decontamination of Facilities and Equipment Prior to Release for-Unrestricted Use or Termination of Licenses for Byproduct, Source or Special Nuclear 3
Material," U.S. Nuclear Regulatory Commission, Division of Fuel Cycle and Material j
Safety, Washington D.C., August 1987.
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" Review Plan: Evaluating Decommissioning Plans for Licensees Under 10 CFR Parts 30,40, and 70", U.S. Nuclear Regulatory Commission, Washington, D.C.,1991.
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1 APPENDIX A s
COST ESTIMATE
- CONFIRMATORY SURVEY FOR TIIE TEXAS INSTRUMENTS INCORPORATED BURIAL SITE, ATTLEBORO, MASSACIIUSETTS l
t Survey Preparation - $5,600 Survey preparation includes the following activities: document reviews, survey plan, the cost and time estimates, trip planning and preparation (equipment calibration and packing).
On-Site Activities - $11,200 k
On-site activities will include 9 man-days at the site performing the following: gamma scans, soil sampling, and exposure rate measurements. The on-site expenses also include unpacking equipment, and logging in samples upon return to Oak Ridge.
Travel - $12,100 i
Travel expenses include transportation to and from the site (airlines, rental vehicle _,
hotel expenses, and perdiem.
t Sample Analysis - $4,500 Includes analysis of approximately 60 soil samples by gamma spectrometry, i
1 Report Preparation - $12,000 i
The report preparation will include the following activities:
tabulation of data, illustrations, writing and reviewing the draft and final reports, word processing and reproduction.
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Islal Cost Estimaic - $45,400 r
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- Estimates arefor survey activities described in this suney plan. Reduction or increase i
in the scope of the survey would result in changes in the original estimate in the "on-site l
t activities" and " sample analysis" categories. Due to the nature of the survey, this estimate is a best guess. Site and weather conditions and surveyfindings may change the scope of the survey and increase or decrease the cost estimate. Major changes to the r
scope of the survey, if necessary, will be made only after consultation with the NRC site representative.
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