ML20153C572
| ML20153C572 | |
| Person / Time | |
|---|---|
| Issue date: | 09/17/1998 |
| From: | Steven Baggett, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20153C569 | List: |
| References | |
| SSD, NUDOCS 9809240134 | |
| Download: ML20153C572 (8) | |
Text
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-8074-D-801-S DATE: $[p )) 1998 PAGE 1 OF 5
-DEVICE TYPE: Portable Explosives Vapor Detector MODEL: EVD-1, TVD-1 DISTRIBUTOR:
DMW Geophysical 4088 West 1820 South, Suite B Salt Lake City, Utah 84104 MANUFACTURER:
Scintrex Limited 222 Snidercroft Road Concord, Ontario Canada L4K 1B5 SEALED' SOURCE MODEL DESIGNATION:
Amersham TRC.F2 Amersham NBC-3 ISOTOPE:
MAXIMUM ACTIVITY:
- 200 millicuries (7.4 GBq)
Nickel-63 (NBC-3) 10 millicuries - (0.37 GBq)
' LEAK TEST FREOUENCY:
TRC.F2 Not required" NBC-3 6 months i
PRINCIPAL USE:
(N) Electron Capture Detection 1
l CUSTOM' DEVICE:
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REGISTRY OF RADIOACTIVE-SEALED SOURCES AND DEVICES j
i SAFETY EVALUATION OF DEVICE l
NO.: NR-8074-D-801-S DATE:
g p l 7 )ggg PAGE 2 OF 5 1
DEVICE' TYPE: Portable Explosives-Vapor Detector DESCRIPTION:
The'Model EVD-l'and TVD-1 are Electron Capture Detectors (ECD).
The ECDs'contain'a total of-200 mci (7.4.GBq) of Hydrogen-3 or
~
10 mci (0.37 GBq) of Nickel-63.
The' sources are in the form of a foil mounted inside-a cylindrical nickel electrode.
LABELING:
A label is on the outside of the ECD module that contains the date of assay, model number, sealed source model, the activity of
'the Hydrogen-3'or Nickel-63, the standard radiation symbol, and 1
the words " CAUTION-RADIOACTIVE MATERIAL." The outside of the detector also bears a label with the standard radiation symbol and the'words " CAUTION-RADIOACTIVE MATERIAL."
DIAGRAM:
See Attachments 1, 2, and 3.
' CONDITIONS OF NORMAL USE:
The device is used as a gas ionizer required for operation of the electronic capture detector.
The normal source temperature for both systems is 115 C (239 F).
If the ECD becomes contaminated during operation, prolonged bake-out at 150 C (302*F) may be performed.
'A flow of ultra-high purity nitrogen is maintained, when the ECD is heated, over the Hydrogen-3 source and passes out through a vent tube in.the detector.
The flow rate is 50 to 60 cm1/ min 3
(3.05 to 3.66 in / min). Measurable gas borne radiation is less 2
2 3
'than 10 microcuries per m (0.37 Bq per m ) during normal use at 1115'C and infrequent bake out at 150 C.
If<'there is any
. malfunction of the heating system, and the unit continued to
- heat, -all power would be terminated when the unit reached 200 C L
(392 F).
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,: NR-8074-D-801-S DATE: fff 171998 PAGE 3 OF 5 DEVICE TYPE: Portable Explosives Vapor Detector
)
CONDITIONS OF NORMAL USE: (Cont.)
Usere for the EVD-1 will be security officers employed by the government or private industry.
Users for the TVD-1 will be military personnel.
Locations for the EVD-1 will be in secure regions of airports or personal property.
Frequency of use will vary with each user, from once a week to several times a day.
The expected life of the device is.7 years.
PROTOTYPE TESTING:
The EVD-1 was developed by the National Research Council of Canada in collaboration with the Ministry of Transport, Canada.
These devices were engineered and manufactured by Scintrex to conform to rigid specification including Transport Canada specifications TAC 3802 October 5, 1982, Military Specifications MIL-STD:0:810C (Mechanical Shock, Bench, Handling, and Altitude),
MIL-STD:461A (Radio Frequency Interference), MIL-STD:462 (Electromagnetic Interference), and NATIOAQAP, Specific prototype testing data was not supplied by DMW Geophysical.
.These devices have been approved for use by the State of Utah since 1986.
EKTJCRNAL RADIATION LEVELS:
The manufacturer reported no detectable radiation above background at any external surface.
OUALITY ASSURANCE AND CONTROL:
1
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A radiation survey was performed on each unit.
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1 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO,: NR-8074-D-801-S DATE:
3[p ; 7 ggg PAGE 4 OF 5 DEVICE TYPE: Portable Explosives. Vapor. Detector LIMITATIONS AND/OR'OTHER CONSIDERATIONS OF'USE:
- The detector cellLassembly shall-be' distributed only to
-specific licensees of the NRC or an Agreement State.
- The! detector cell assembly using Nickel-63 shall be leak tested at' intervals not'to exceed'6 months.using techniques capable of detecting 0.005 microcurie (185 Bq) of removable contamination by persons'specifically. licensed by the NRC or an Agreement State.
- Handling, storage, use, transfer, and disposal.: To be determined by the licensing' authority.
Servicing of the detector must be performed by persons specifically.
licensed by the NRC or an. Agreement State.
' SAFETY ANALYSIS SUMMMif,t DMW Geophysical's material license was issued by the State of Utah and authorized distribution of the Model EVD-1, and TVD-1 Portable Explosive. Vapor Detectors.
It was terminated on March 3, = 1989. " The Portable Explosive Vapor Detector were reviewed and' approved for licensing purposes by the State of Utahion October 3, 1986. Based on the expected useful life of the product (7 years), it is expected that very few, if any, of these products are still in use.
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' REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l
l NO,: NR-8074-D-801-S DATE: $[p ; y ]ggg PAGE 5 OF 5 DEVICE TYPE: Portable Explosives' Vapor Detector
REFERENCES:
- The following supporting documents for the Model EVD-1 and TVD-1 Portable Explosive Vapor Detectors are hereby incorporated by
.' reference and are 'made a part of this' registry document
- Scintrex Limited's application' dated September 3, 1986.
- Scintrex Limited's" letters dated June 12, 1986, and September 5,r1986,'with; enclosures thereto.
- DMW Geophysihal's' letters dated March:30, 1988, and
' February 17,1989.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission DATE:
REVIEWER:
?7"V SEP 171998 4t'dven
.'Baggett DATE:
CONCURRENCE:
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2 Salt lac City. C:ah 24114-4850 g'b, l
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June 4,1996 AM ElN Richard L. Bangart, Director M
Office of State Programs kOP j
US Nuclear Regulatory Commission 0g p i
Washington, D.C. 205554)001
Dear Mr. Bangart:
Prior to the Conunission's reassumption of regulatory authority for sealed source and device evaluations in the State of Utah, information was colleued by Division of Radiation Control staff. As per your request dated May 8,1996. I am forwarding to you the background files relevant to evaluations issued by the State of Utah for sealed sources and devices. Information is provided on the following registry numbers:
REGISTTO' NUMBEP D3.TE,
3 UT-0265-D-101-S.
~10/03/86 UT-0569-D-101-S OS/08/8-1 UT-0569-D-102-S ON25/85 UT-8048-D-802-G 08:0815 i
If you have questions, please contact me or Cra!g' W. Jones, of my staff, at (801) 536-4250.
Ilis internet address is eqrad.cjones@ state ut.us.
w Sincerely, c_.
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William L Sinclair.Wtrector Division of Radiation Connol co
Enclosures:
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