ML20134N372
| ML20134N372 | |
| Person / Time | |
|---|---|
| Issue date: | 09/28/1995 |
| From: | Steven Baggett, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20134N374 | List: |
| References | |
| SSD, NUDOCS 9702240117 | |
| Download: ML20134N372 (6) | |
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-REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE i
NO.: NR-420-D-840-B DATE: September 28, 1995 PAGE 1 OF 5
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DEVICE TYPE:
"C" Frame Beta Gauge MODEL:
SC-9C MANUFACTURER / DISTRIBUTOR:
LFE Industrial Systems Corporation 55 Green Street Clinton, MA 01510 SEALED SOURCE MODEL DESIGNATION:
LFE Model S-9 j
l ISOTOPE:
MAXIMUM ACTIVITY:
Ruthenium-106 20 millicuriee- (0.74 GBq) 1 4
LEAK TEST FREOUENCY:
6 Months PRINCIPAL USE:
(E) Beta Gauges CUSTOM DEVICE:
YES X
NO 9702240117 950928 PDR RC PDR S<
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES i
SAFETY EVALUATION OF DEVICE NO.: NR-420-D-840-B DATE: September 28, 1995 PAGE 2 OF 5 DEVICE TYPE:
"C" Frame Beta Gauge DESCRIPTION:
This device is identical to the Tracerlab Model SC-lc beta gauge except that the sealed source contained therein is a Tracerlab Model S-9 which contains up to 20 mci of ruthenium-106.
The device is mounted on a "C"
frame and has a 2" (5.08 cm) air gap.
The source shutter mechanism is mounted within the basic containment casting and secured at it by four screw type fasteners.
The mechanism is also protected by an aluminum cover which is held in place by ten screw type fasteners.
The shutter itself is housed within the cover plate which is secured by six additional screw type fasteners.
At the very least, the removal of ten screw fasteners would be required to expose the source witho"t using electrical actuation back at the control console.
When the source is operated, a micro-switch actuated directly by the shutter turns on a red indicating light mounted on the "C" frame in such a place as to plainly visible from all sides.
When the shutter is closed, a green light is turned on.
Additional indication of shutter position is given by the visual indicator on the source mount.
This indicator is clearly visible to any person approaching the area of the source mount and shows the exact position of the shutter at all times.
LABELING:
All devices distributed were labeled with the following:
" Caution Radiocctive Material," radiation symbol, isotope, activity, and model number.
Devices distributed to general licensees included the following additional information: (The following markings were shown on aluminum and stainless steel marking plates)
" Removal of Thin Label is Prohibited.
This Label Shall be Maintained ca the Device in Legible Condition, Caution, Ra lioactive Material," Radiation Symbol, Name and Address of Manufacturer, Isotope, Quantity, Date, Model Number, Serial Number, " Turn Source Off When Necessary to Stay Within 3 ft. of Green Light.
Green Light Indicates Source Off.
Do Not Place Hands in Measuring Gap."
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-420-D-840-B DATE: September 28, 1995 PAGE 3 OF 5 DEVICE TYPE:
"C" Frame Beta Gauge LABELING (Cont.)-
The following statement is also included:
REMOVAL OF THIS LABEL IS PROHIBITED THIS LABEL SHALL BE MAINTAINED ON THE DEVICE IN LEGIBLE CONDITION THE RECEIPT, POSSESSION, USE AND TRANSFER OF THIS DEVICE A3E SUBJECT TO A GENERAL LICENSE OR THE EQUIVALENT AND THE REGULATIONS OF THE U.S. NRC OR A STATE WITH WHICH THE NRC HAS ENTERED INTO AN AGREEMENT FOR THE EXERCISE OF REGULATORY AUTHORITY.
ABANDONMENT OR DISPOSAL PROHIBITED UNLESS TRANSFERRED TO PERSONS SPECIFICALLY LICENSED BY NRC OR AN AGREEMENT STATE.
OPERATION PROHIBITED IF THERE IS INDICATION OF FAILURE OR DAMAGE TO SHIELDING, SOURCE CONTAINMENT OR ON-OFF MECHANISM.
QliLY PERSONS SPECIFICALLY LICENSED BY NRC OR AGREEMENT STATE MAY INSTALL, DISMANTLE, RELOCATE.
r REPAIR OR TEST THIS DEVICE.
DEVICE SHALL BE TESTED FOR RADIOACTIVE LEAKAGE AND PROPER FUNCTIONING OF ON-OFF MECHANISM AND INDICATOR, IF ANY, AT INSTALLATION, AT SOURCE REPLACEMENT AND THEREAFTER AT NO LONGER THAN 6 MONTH INTERVALS.
LOSS, THEFT OR TRANSFER OF THIS DEVICE TO ANOTHER LICENSEE AND FAILURE OR DAMAGE TO SHIELDING, SOURCE CONTAINMENT OR ON-OFF MECHANISM MUST BE REPORTED TO NRC OR AGREEMENT STATE.
CONDITIONS OF NORMAL USE:
The device is designed for use in a beta thickness gauge to measure thickness of materials in industrial environments.
Expected operating conditions are:
- Temperature - Up to 300*F (149*C)
- Humidity - Up to 100%
- Vibration - Industrial conditions at slight to moderate vibrations l
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i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE I
HQ 1 NR-420-D-840-B DATE: September 28, 1995 PAGE 4 OF 5 l
DEVICE TYPE:
"C" Frame Beta Gauge PROTOTYPE TESTING:
LFE has indicated that they have no information concerning i
prototype testing of the devices.
However, they have indicated that these devices were first distributed in the early 1960's and there have been no reported failures resulting in a radiation hazard.
l EXTERNAL RADIATION LEVELS:
The radiation levels from the device are controlled with shielding such that the levels do not exceed 20 mR/hr 1
(200 pSv/hr) at 12" (30.5 cm) from the surface.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
1
- The device may be used by specific or general licensees of NRC or an Agreement State.
- Handling, storage, use, transfer, and disposal:
To ba determined by the licensing authority.
- The device shall be leak tested at intervals not to exceed 6 months using techniques capable of detecting 0.005 microcurie (185 Bq) of removable contamination.
- This registration sheet and the information contained within the references shall not be changed without the written consent of the NRC.
SAFETY ANALYSIS
SUMMARY
These devices are no longer distributed by the LFE.
However, LFE may provide servicing for devices in use and may accept return of i
the sources.
LFE has indicated that it has distributed l
approximately 3 of these model devices.
l i
I I
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l
NO.:. NR-420 D-840-B DATE September 28, 1995 PAGE 5 OF 5 DEVICE TYPE:
"C" Frame Beta Gauge 1
REFERENCES:
The following supporting documents for the Model SC-9C are hereby incorporated by reference and are made a part of this registry document.
- LFE's letters dated September 15, 1995, September 16, 1991, and August 6, 1991, with enclosures t. hereto.
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ISSUING AGENCY:
U.S. Nuclear Regulatory Commission
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Date:
September 28, 1995 Reviewer:
I hn W.
ubinski 7
l Date:
,_Sentember 28. 1995
. Concurrence:
A l
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'SYeven L. %aggett i
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P th! FORMAT!ON RECC"O
) TYPE:
Note to LFE files for registration certificates mad inactive September 1995.
e ORGANIZATION:
LFE DATE:
09/21/95
SUMMARY
Exist!.ng AEC/NRC files (registration files files, NUDOCS, and archives) license were e m ined for information that supportsconcerning these products registration of the products.
Copies of all applicable information located is included in this file.
The manufacture **,
- LFE, i
information concerning the products.was also asked for additional the product lines were sold in the late 1960'sthe pr However, many of
, or LFE provided all additional information they have
, and concerning the products.
NRC has transferred the registration certificates t inactive, as requested by LFE o
and continues to purposes based on AEC's original evaluation of the i
products and the operational history of the products PERSONS DOCUMENTING THE INFORMATION:
SIGNATURE:
DATE:
9f W ~
4 John W. Lubinski
/
09/21/95 Steven L. Baggett
-1 09/21/95 y
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