ML20207A961
| ML20207A961 | |
| Person / Time | |
|---|---|
| Issue date: | 02/09/1984 |
| From: | Heyer R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Dicus G ARKANSAS, STATE OF |
| Shared Package | |
| ML20207A912 | List: |
| References | |
| SSD, NUDOCS 9905280065 | |
| Download: ML20207A961 (1) | |
Text
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Of "*%4, UNITED STATES g" (, NUCLEAR REGULATORY COMMISSION
'$ ; ,8 REGION IV h, [ 611 RYAN PLAZA DRIVE, SUITE 1000
, , ARLINGTON, TEXAS 70011 i FEB 1984 Ms. Greta J. Dicus ,
Chief of Licensing '
Division of Radiation Control and Emergency Management Programs 4815 West Markham Street Little Rock, Arkansas 72201
Dear Ms. Dicus:
This is in response to your letter of January 16, 1984, to Mr. Robert J. Doda, requesting a review of the Ticor Incorporated's pipe thickness gauging i device, Model GH-11. 1 Based upon the review of correspondence between Ticor Incorporated and yourself, as well as the device specifications, no comments are offered at this time. It apppears that the Registry of Radioactive Sealed Sources and Devices, Safety Evaluation of Devices for AR-637-D-101-S is complete.
We appreciate the opportunity to review this sealed source and device evaluation.
Sincerely, L
h)(f/v Ralph S. Heyer Health Physicist State and Government Relations Staff g9DIlPgg
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE C
NO: AR-637-D-101-5 DATE: December 1, 1983 PAGE 1 0F 5 DEVICE TYPE: Pipe Thickness Gauging Device MODEL: GH-11 MANUFACTURER / DISTRIBUTOR: Tiecor, Inc.
1701 South Shackleford Road Little Rock, AR 72211 SEALED SOURCE MODEL DESIGNATION: Gamma Industries, Model iDHP k_ ISOTOPE: Cesium-137 MAXDfUM ACTIVITY: 3 curies LEAKTESTFREQUy3Y,: 6 months PRINCIPLE USE: Gamma Gauge CUSTCM DEVICE: YES X NO O
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'\' REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO: AR-637-D-101-S DATE: December 1, 1983 PAGE 2 0F 5 DEVICE TYPE: Pipe Thickness Gauging Device DESCRIPTION:
This device uses a Ga:::ma Industries Pipeliner Model 300 Industrial Radiography Camera with no modifications made on the camera. See registration Number LA-300-D-137-U for a description of the camera. The Model GH-11 pipe thickness gauge is a rotating device consisting of the source and . source housing (camera),
an electronic detector, a mechanical device to rotate the source-detector assembly around the pipe and an electronic processing unit with digital and analog readout.
The camera mounting arrangement is made of aluminum, excluding the nuts, bolts and washers which are made of brass or steel. There is a 115 inch lead block shielding behind the detector to attenuate the gamma beam.
LABELING:
The marking on the Model 300 camera is described in registration Number LA-300-D-137-U and this marking has not been changed. There is an additional marking on the Model GH-11 which consists of a 3 x 3 inch radiation symbol bearing the model number of the gauge.
DIAGRMIS: See Figures 1 and 2 on page 3.
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4 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES .
SAFETY EVALUATION OF DEVICE NO: ARK-637-D-101-S
- DATE.: December 1, 1983
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PAGE 3 02 5 DEVICE TYPE: Pipe Thickness Gauging Device {
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SFETY EVALUATION OF DEVICE NO.: -
DATE: December 1, 1983 PAGE 4 0F,5 DEVICE TYPE: Pipe Thickness Gauging Device EXTERNAL RADIATION LEVELS:
Figure 2 contains radiation profiles taken with the shutter opened and closed.
Radiation levels at the surface of the assembly are less than 1 mr/hr so no distance requirements are necessary.
CONDITIONS OF NORMAL USE:
The device is designed for use as a rotating camera for gauging pipe wall thickness.
It can be permanently mounted or can be used in a mobile unit. It should be used at ambient temperatures and pressures. It is, for all practical purposes, water proof and operations in outside weather should have no effect on the internal components..
I PROTOTYPE TESTING:
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The source shield is made of tungsten alloy to prevent loss of shielding in a fire.
Impact testing of the wall thickness assembly to include t!e aurce container was conducted with the shutter in the OFF position and the camera stayed in the OFF position showing the reliability of the snutter locking device. Rotational testing was cenducted with the shutter in the ON position and the shutter stayed in the ON position demonstrating the reliability of the cam lock assembly and shutter assembly.
Since the unit is employed in a rotational environment up to 100 RPM, rotational tests were made to ensure its integrity during rotation.
See registration Number LA-300-D-137-U for a description of the prototype tests made on the Gamma Industries Model 300 Camera.
CUALITY ASSURANCE 6 CONTROL:
Each unit is assembled according to the specifications detailed in the manufacturer's drawings. Prior to shipment, the shielding for each unit and the shutter operation will be tested. Each source will be wipe tested and after installation of the camera, each unit will be surveyed. A record of this survey is maintained by the manufacturer as a reference.
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i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES '
SAFETY EVALUATION OF DEVICE l
l NO,: AR-637-D-101-S DATE: December 1, 1983 PAGE S OF S DEVICE TYPE: Pipe Thickness Gauging Device l -
LIMITATIONS AND/0R OTHER CONSIDERATIONS OF USE: ,
J A. Tiecor, Inc., Model GH-11' Pipe Thickness Gauge is to be distributed only to individuals or firms having a specific license issued by the NRC or an Agreement State.
- 1 B. Installation, repair, replacement or disposal of the sealed source or GI Pipeliner Model 300 Camera shall be performed in accordance with the terms and conditions of a specific license issued by the NRC or an Agreement State.
C. The same limitations and/or other considerations of use listed for the GI Pipeliner Model 300 Camera apply also.
D. The Model GH-11 Gauge manufacturer will provide user training in the operation and safe use of the gauge.
E. The gauge should be used according to the Operating and Safety Manual developed by the manufacturer.
F. The gauge manufacturer reccmmends that all mechanical count screws should be b checked daily or prior to use.
G. Licensees should provide personnel with film badges or dosimeters and survey meters.
SAFETY ANALYSIS SU:SIARY:
Based upon our review of the information contained in the references cited below, we conclude that the Tiecor, Inc. Model GH-11, Nall Thickness Gauge is acceptable for use by Specific Licenseec pursuant to the Limitations and/or Considerations of Use listed above.
REFERENCES:
A. Letter and enclosures from Tiecor', Inc. dated September 8,1933 and signed by R. C. Beaver.
B. Letter from Tiecor, Inc., dated September 27, 1983 and signed by R. C. Beaver. j DATE: jfhyvfdr/2 .20 8 83 REVIEWED BY: % fino hd ,
l DATE: bu_ h , 40 C23 f CONCURRENCE: d l
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ISSUING AGENCY: Arkansas Department of Health is i
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