ML20153C769
| ML20153C769 | |
| Person / Time | |
|---|---|
| Issue date: | 11/25/1991 |
| From: | Steven Baggett, Thomas Rich NRC |
| To: | |
| Shared Package | |
| ML20153C584 | List: |
| References | |
| SSD, NUDOCS 9809240195 | |
| Download: ML20153C769 (8) | |
Text
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE j
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HQ1'NR-689-D-101-G DATE: NOV -2 51991 PAGE 2-of 6 l
DEVICE TYPE:
X-ray fluorescence ash analyzer j-
-Df1CRIPTION:
Stock Equipment Company's x-ray fluorescence analyzer uses x-ray fluorescence techniques to measure the amount of ash in a moving bed of coal.
The device design is mounted rigidly to a frame
.that houses other components of the complete transfer system.
The device housing is 3 5/16 inches in diameter, has a wall thickness of 0.065 inches, made of' anodized aluminum, and is i
bolted to the mounting frame.
This housing contains a retractable tube (probe) 2 5/8 inches in diameter which houses the detector and iron-55 sealed source.
When the probe is fully retracted, the source is hidden from view and surrounded by the device housing which virtually blocks all of the radiation emitted by the source.
The probe is only extended when coal is i
being measured, otherwise it is retracted into the probe housing.
.The source is bonded to a copper source holder which is mounted on a counting tube and fastened in place by an annular nut.
This counting tube containing the sealed source is mounted in the translating (retractable) tube.
The sealed source moves about 5 inches on the stroke of the translating tube.
A pneumatic rotary actuator is used to drive the translating tube.
In the event of a loss of pressure, or power, the translating tube will be automatically retracted.
Light emitting diodes (LED's) located on the end of the translating tube indicate.whether the translating tube is fully extended " shutter open" and if the analyzer is collecting data.
Both LED's are off when the source is in the fully retracted position.
The probe when installed in the coal system can be seen through a
.Lexan window that is attached.to a steel door that covers the coal handling department.
The device design is constructed in a manner in which the photon beam is' inherently inaccessible by the user.
The probe is secured so that it can not be removed from the front of the instrument where preventative maintenance is performed.
f 9809240195 990911 7
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF. DEVICE 4
HQi NR-689-D-101-G DATE: NOV 2 51991 Ehog 3 of 6-DEVICE TYPE:
X-ray fluorescence ash analyzer LABELING:
The device is labeled in accordance with'Section 20.103, 10 CFR Part 20 and with the requirements of Section 32.51, 10 CFR Part 32.
DIAGRAM:
See attachment 1 and 2.
CONDITIONS OF NORMAL USE:
Model D26752 X-ray Fluorescence Analyzer is used to determine the ash content in coal flowing on a conveyor belt.
The device is designed'for the following environmental conditions:
Temperature range - -10' to 50'C Ilumidity range - 5 to 95%
Vibration - generally intermittent and low frequency The' coal analyzer requires clean, dry, and oil free air.
The air purity and. pressure specifications are:
Pressure > 50 psig Particle size < 500 micrometers
' Dew point-<-0*C 011 vapor - not effected by oil vapor.
The device may be subjected to slightly corrosive environments.
The expected useft? life of the device is 20 years.
PROTOTYPE TESTING:
Model IEC.A1 sealed sources have achieved an ANSI N542 classifications of 77C33232.
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l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE hoi NR-689-D-101-G DATE: NOV 2 51991 PAGE 4 of 6 DEVICE TYPE:
X-ray fluorescence ash analyzer EXTERNAL RADIATION LEVELS:
The manufacturer reports that when the probe is retracted, no dose of any consequence can be measured.
When the probe is in the exposed position the maximum radiation levels measured from the sealed source (probe suspended in space, not installed in analyzer) for a 20 millicurie iron-55 sealed source are:
External Radiation Distance Level (mR/hr) 5 480 30 15 50 3.5 OUALITY ASSURANCE AND CONTROL:
Stock Equipment Company has submitted an acceptable Quality Assurance and Quality Control program.
This program is on file with the Medical, Academic, and Commercial Use Safety Branch.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
The device shall be leak tested at six month intervals using techniques capable of detecting 0.005 microcurie of removable contamination.
Devices shall be labeled in accordance with Section 32.51, 10 CFR Part 32, or equivalent provisions of an Agreement State.
The device shall be installed and initially tested for proper operations of the source exposure mechanism, safety warning components, labels, external radiation levels and leak tested by Stock Equipment Company, or other persons specifically licensed by the NRC or an Agreement State.
This registration and the information contained within the references shall not be changed without the written consent of the NRC.
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i l-REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE i
t HQ1 NR-689-D-101-G DATE: NOV 2 5 BM PAGE 5 of 6
'l DEVICE TYPE:
X-ray fluorescence. ash analyzer I
SAFETY ANALYSIS SI.'Q) HEY 1 The manufacturer has designed the analyzer in such a manner that the' photon beam is inherently inaccessible by the user, and automatic retraction of the low energy sealed source in the event 4
of loss of computer' control or air pressure.
The probe is secured so that it can not be removed from the front of the
. instrument where preventative maintenance is performed.
Additionally, the device is housed within a closed 16 gage steel l
enclosure.
h Based on.our' review of the information and test data cited below, l
L we conclude that Stock Equipment Company has sufficient information to provide reasonable assurance that:
The device can be safely operated by persons not having
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training in radiological protection.
Under ordinary conditions of handling, storage, and use of E
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the device, the byproduct material contained in the device will not be released or inadvertently removed from the
. device, and it is unlikely that any person will receive in j
any period of one calendar quarter a dose in excess of 10
. percent of the limits specified in the table in Section l
20.201(a), 10 CFR 20.
Under accident conditions (such as fire and explosion) associated with handling, storage and use of the device, it is unlikely that any persons would receive an external radiation dose or dose commitment in excess of the dose to the appropriate organ as specified below.
PART OF BODY EEM Whole body; head and trunk active blood-forming organs; gonads; or lens-of eye 15 l.
Hands.and forearms; feet and i
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ankles; localized areas of skin averaged over areas no larger than l' square centimeter 200 l
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Other organs 50 l
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE hoi NR-689-D-101-G DATE: NOV 2 51991 PAGE 6 of 6 DEVICE TYPE:
X-ray fluorescence ash analyzer SAFETY ANALYSIS
SUMMARY
(CONT.):
Furthermore, we conclude that the device would be expected to maintain its containment integrity for normal conditions of use and accidental conditions which might occur during uses specified in this certificate.
REFERENCES:
The following supporting documents for Model D26752 X-Ray Fluorescence ash analyzer are hereby incorporated by reference and are made a part of this registry document:
Stock Equipment Company's application dated March 6,
- 1990, and February 21, 1990, and letters dated October 17, 1991, May 1, 1990, April 20, 1990, and March 19, 1990, with enclosures thereto.
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission Date:
ISSI Reviewer:
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Date:
f DV 2 51991 N#8 Concurrence:
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6 YU 13014155369 P.02 t
if1L December 20, 4996-U.S. Nuclear Regulatory Commission b
gwit Region III y
799 Roosevelt Road VP fg olenellyn, Illinois 60137 Attna John Modera magerenees control #e8847 Request for amendment tn license 34-11065-01 Dear Air;
. In response to the telephone conversation of 12/1W/W1 Detween you and chuck Homer of Stock, 3 am writing to request that you suopond our application of for amendment to our license. The amendment would permit Stock to manufacture and distribute our model D26752 X-Ray Fluorescence Analyzer (registry #NR 680-D-101-G) containing up to 50mg. of Iron 55. Circumstances have required us to delay
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planned marketing of the device.
I also understand that you will correct the name of the RSO in our license to correnpond to amendment 08 and modify item G permitting us to hold up to 5 Iron 55 aources (not to exceed 50 millicuries each) to be used in R&D and manufacturing of X-Ray Fluorescence Analysers.
You will also hold our application for distribution of such analyzers and that ww are permitted to reapply for distribution within the next year. After one year you will abandon the distribution application.
Thank you for your kind assistance.
noot negardo l
Peter B. Cadou Vice President, Engineering stock Equipment company oo chuck Mesmer TOTAL P.02
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