ML20205M809
| ML20205M809 | |
| Person / Time | |
|---|---|
| Site: | 07001489 |
| Issue date: | 07/18/1986 |
| From: | Gleghorn D GOODYEAR AEROSPACE CORP. (SUBS. OF GOODYEAR TIRE |
| To: | Mallett B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20205M785 | List: |
| References | |
| 81055, NUDOCS 8811030299 | |
| Download: ML20205M809 (4) | |
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18 Jul.y 1986 Ref:CIHS 2119 Bruce Mallett, PhD U. S. Nuclear Regulatory Commission Region III, haterial License Section 799 Rooseve t Road Glen Ellyn, IL 60137
Subject:
TerminationofNRCSourceMat.: rial &SpecialNucNarMaterial
[ b l0 License No. 3MN 1461, Goodyear Aerospace CdIporation b
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Reference:
4/03/86 memo to B. S. Mallett, PhD g
7 7/01/86 phone coversation B. S. Mallett/J. V. Pflaum
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RECEl'/E0 BV LFP43 Date.
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Dear Dr. Hallett:
9/ _h This report was prepared in response to our 7/1/86 phone conversatigg g p ed M
NRC documentation dated 7/7/86.
This report is to update the NRC on the progress and proceduroa used in ths effort to bring the VFL ATC facility into compliance for an unrestricted termi-nation.
The following sections will describe the final close out procedure; after the June 19, 1986 visitation from ORAU.
MONITORTW'; All monitoring of the facility was conducted with a Ludium Model 12 count rate meter.
The meter was borrowed from Goodyear Atomic Corporation (GAT) and was calibrated on 5/14/86, the next scheduled calibration date is 8/14/86. The probe for the meter is a Ludlum Model 44 9 Beta probe. Attachment 1 is the CAT procedures for use of the meter, correction factor (X 60). A note for the record; when ORAU visited in June we checked this meter against their SR 90 check source.
There was a very close agreement: 30,000 cpm (CAT /CAC) vs 27,000 cpn (ORAU).
Also, the correction factors were X60 (CAT /CAC) vs-X30 (ORAU). With this in-strumentation check, se found that all data collected with the meter from GAT have dpm readings TVICE the; value of the CRAU equipment.
J.V. Pflaun conducted all monitoring of the questionable areas using the Ludlum meter, CAT procedures.
D. E. Gleghorn
- assisted with or concucted the final floor and co.urete pad moni.oring.
Any floor arsa, pipe, ground area o. hardware that had a meter reading in excess of 175 cpm (7;00 dpm), was considtrod v.,;aminated and was remov9d.
The dispocal procedures for all materials are described in a later section.
- See Attachment (3) for cualifications of those conducting fir.a1 nonitoring, f,
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2-4 Ref:CIHS.2119 IEXI1MIEC RESULTE: ' Monitoring of the decontamination process was conducted by J.V. Pflaum using the Ludlua meter.
1-4" Main Drain Pipe - 7200 dpm Measurements were taken from the opening, after the removal of the "T",
to a distance of 3' into the pipe in each direction. The interior wall was completely scanned 360 degrees and only the bottom of the line had any activity. The up stream direction (East) had a lower activity, 5400 dpm. Because the activity inside the pipe was below the CAC criteria, the main was not removed, j
2-6' manhole outside hangar - The bottom of the manhole was surveyed the day ORAU was at the facility. Bottom surface of the manhole 6000 dpm.
The 4" drain pipe coming from the facility 6000 dpm; the 4" drain exiting the manhole which goes to the Hoffman filter bed - 6000 dpm.
3-The 4' drain was followed and where it enters the Hoffman filter bod the I
open pipe was surv6yed - 540c dpm.
4+ Soil samples were taken at the:
(a) 4" drain line, 5' below the floor, soil sample taken below the removed "T".
j (b' Shower line sample; sample taken out of the trough of the removed line.
j (c) Hoffman filter bed; sample taken at the point where the pipe dumps into the field, i
All samples were sent to Bolton & Calanek, Inc., MIT, Boston, MA.
At the writing f
of this report we have not remaived the results of these tests. We will notify l
you of the results as soon as possible.
5-All concrete floor areas were surveyed on July 9,1986 by J.V. Pflaum and D.E. Cleghorn using the Ludlum meter taking 12 point readings across the l
2 meter grid that was laid out by ORAU.
The results of each grid are given in an average of the traverso and its range.
l 5.1. Grid C 3600 dpm e'g. -
Range 2400-4800 dpm 5.2. Crid F 48 -
6000 dpm Avg. -
Range 4800-7200 dpm j
5.3-Grid E 48 -
4200 dpm Avg. -
Range 3600 4800 dpm 5.4 Concrete Pad (outside) -
3000 dpm*
Range 2400* -3600 dp
- - Background counts of 40CP3/2400 dpm 6
- 6. All concrete floor areas were surveyed again on July 16, 1986 by D.E. Gleghorn using the Ludlum meter.
See attachment (4) containing grid and results.
i l
.a.
3 Ref:CIHS.2119 9-Tools: The wnt/ dry vacuum was the article of the greatest concern; all interior surfaces, hose entry / exit, vacuum motor, external surfaces were scanned.
No readings in excess of background counts, 2.00 dpm, were found.
The remainder of the tools, han.mers, concrete saw, jack-hammer chisel, and floor brooms were also checked; and no readings above the background levels were found.
DECNTAMINATION AND DISPOSAI. OF COYrAM1HAIt'DlCRAP_1 This process vus under the direction of J. V. Pflaum.
When the process of the removal of all concrete floors was started a suitable staging location ves l'ned with plastic to keep any of the rubble from spreading to the adjace.nt-sconods. All concrete scrap was placed on the plastic along with their subcoC' rhe pile was diked end covered at a later time. Wooden boxes were lined witii plastic, and then a cardboard interbox was placed inside.
Five such 48' quare boxes were con-structed, filled with the scrap, sealed, properly labeled and shipped to CAT Piketon, Ohio.
Enclosed is a copy of the manifest of that shipment.
Ady b' W
Daniel r Glegh rn, CSP, Manager Corporate Industrial Hygiene & Safety (216) T46 4180
/j Attachment (1) (2) (3) & (4) cc: W. L. Alexson B. Bell, GAC D/902 C ES Pvhala, GT&R D/108 I
ATTACHMENT (1) l
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GOODYEAR ATOMIC CORPORATION
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P. O. BOX 020 PlKETON. OHIO 45661 PHONE: 614 289 2331 May 30, 1986 GAT-102-86-243 Goodyear Aerospace Departmen 131G 1210 Massillon Road Akron, OH 44315 Attention Mr. John Pflaum Gentlemen:
LOAN OF LUDLUM PANCAKE GM DETECTOR The enclosed instrument and procedures should serve your beta contamination monitoring needs.
Please note that the pancake probe should be placed inside a thin-mil plastic bag when monitoring.
This serves two purposes; it prevents alpha radiation from entering the detector and helps to keep the probe contamination-free.
Cheap, commercially available bag brands such as Kroger Cost-Cutter baggies are recommended for this purpose.
Combined efficiency and geometry correction factors are given in Attachment II of MSE-HPp238.
When counting wipe samples, it is assumed that the area wiped is 100 cm and that all the contamination on the wipe is beneath the mica window of the probe.
When your project is completed, please return the instrument to:
Goodyear Atomic Corporation Industrial Hygiene and Health Physics Department MS 1214A Piketon, OH 45661 Please call if you have any questions concerning the instrum(nt or its use.
Very truly yours.
O A. C. Dassett, Health Physicist Industrial Hygiene a Health Phystes ACR:gew cy:
C. M. Hutchings, MS 1232 E. R. Wagner, MS 1214A CONTROL No. 81, g g ACTING *;NDf R CONT R ACT DL AC05 760R00001 %ITH THE U S DEP ARTME NT OF I NERGY
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