ML19294B071
| ML19294B071 | |
| Person / Time | |
|---|---|
| Site: | 07109137 |
| Issue date: | 02/15/1980 |
| From: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | |
| Shared Package | |
| ML19294B068 | List: |
| References | |
| NUDOCS 8002270091 | |
| Download: ML19294B071 (5) | |
Text
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Form NRC418 U.S. NUCLEAR REGULATORY COMMISSION U
CERTIFICATE OF COMPLIANCE 10 CFR 71 For Radioactive Materials Packages 1.(a) C if to Number 1.(b) evision No.
1.
P I
ifi ion No.
1 (d) Pages No. 1.(e) tal No. Pages
- 2. PREAMBLE 2.f a) This certificate is issued to satisfy Sections 173.393a,173.394,173.395, and 173.396 of the Department of Transportation Hazardous Materials Regulations (49 CFR 170189 and 14 CFR 103) and Sections 146-19-10a and 146-19--100 of the Department of Transportation Dangerous Cargoes Regulations (46 CFR 146-149), as amended.
2.(b)
The packaging and contents described in item 5 below, meets the safety st.Mards set forth in Subpart C of Title 10. Code of Federal Regulations, Part 71, " Packaging of Radioactive Materies for Transport and Transportation of Radioactive Materis.1 Under Certain Conditions."
2.(c)
This certificase does not relieve the consignor from compliance with any requirement of the regulations of the U.S. Department of Transportation or other applicable regulatory agencies, including the government of any country through or into which the package will be transpcrted.
- 3. This certificate is issued on the basis of a safety analysis report of the package design or application-3.(a)
Prepared 'ay (Name and address):
3.(b)
Title and identification of report or application:
Technical Operations, Inc.
Technical Operations, Inc. application dated 40 North Avenue November 9, 1979.
Burlington, MA 01803 3.(c)
Docket No. 71-9137 4 CONDITIONS This certificate is conditional upon the fulfilling of the requirements of Subpart D of to CFR 71, as applicable, and the conditions specified in item 5 below.
- 5. Description of Packaging and Authorized Contents. Model Number, Fissile Class, Other Conditi,, and
References:
(a) Packaging (1) Model No.: 820' (2) Description A steel encased, uranium shielded source changer. Primary components consist of an outer stainless steel shell, polyurethane potting material, uranium shield, eight Titanium "J" tubes, source stop, and top and bottom support plates. The contents are securely positioned within the "J"' tubes by means of a source cable locking device. The package has an outside diameter of 19-1/2 inches and outside length of 21-1/P. inches. The maximum total weight of the package is approximately 222 pounds.
(3). Drawings The packaging is constructed in accordance with Technical Operations, Inc. Drawing No. 82090, Shecto 1 through 4.
8002 27oo4k
71-9137 Page 2 - Certificate No. 9137 - Revision No. 0 - Docket No.
5.
(b) Contents (1) Type and form of material Iridium-192 sources which meet the requirements of special form as defined in 571.4(0) of 10 CFR Part 71.
(2) Maximum quantity of material per package 1,000 curies with no more than 240 curies in a single source.
6.
The package authorizeo by this certificate is hereby approved for use under the general license provisions of 10 CFR 571.12(b).
7.
Expiration date: January 31, 1985.
[EFERENCE Technical Operations, Inc. application dated November 9,1979.
FOR THE U.S. NUCLEAR REGULATORY COMMISSION Mharles E. MacDonald, Chief y
Transportation Certification Branch Division of Fuel Cycle and Material Safety Date:
Safety Evaluation by the Transportation Certification Branch Division of Fuel Cycle and Material Safety TECHNICAL OPERATIONS, INC.
Model No. 820 Summary By application dated November 9,1979, Technical Operations, Inc., of Burlington, Massachusetts, requested NRC approval of the Model No. 820 source changer and shipping container for Type B quantities of radioactive material in special form.
Based upon the statements and representations contained in the application, we have concluded the Model No. 820 package meets the requirements of 10 CFR Part 71.
Submittal Technical Operations, Inc. application dated November 9,1979.
Drawing List The Model 820 packaging is constructed in accordance with the following Technical Operations, Inc. drawings:
drawing No.
Sheet Revision No.
82090 1 through 4 Package Description The Model No. 820 source changer is a shielded shipping container for Type B quantities of radioactive material in special form.
The package weighs 222 pounds, has an outside diameter of 19-1/2 inches and outside length of 21-1/2 inches. The outer shell is 13-gauge stainless steel. The radioactive source assemblies are housed in eight Titanium "J" tubes.
Each "J" tube has an outside diameter of 0.44 inch and a wall thickness of 0.035 inch. The eight "J" tubes are welded to an octagonal source stop to form the source tube assembly. The source tube assembl.y is surrounded by 120 pounds of depleted uranium shielding material. The shield assembly is supported top and bottom by plates welded to the outer steel shell.
The void space between the uranium shield assembly is filled with polyurethane foam.
The radioactive material is sealed inside source capsules. The capsules meet the requirements for speci-Mrm material and act as the containment vessel. During transportation, tn. sources are secured in position by means of a locking assembly.
Package Contents The contents consist of up to 1,000 curies of iridium-192 in source assemblies which meet the requirements for special form material. The contents of a single source assembly are limited to 240 curies.
2 Structural The applicant's evaluation of the Model No. 820 package is based upon engineering assessment and actual test results.
The application shows that the package design meets the general standards for all packaging and the structural standards for Type.B and large quantity packaging. The Model No. 820 package was evaluated for the tests specified in Appendix A of 10 CFR 71 for Normal Conditions of Transport. The package would not be subject to a differential pressure as a result of the one-half atmospheric pressure test. Normal shock and vibration was assessed by comparing the package to a similar design (Model No. 750) which has been in use for five years without experiencing failure from transport vibration. The package was assessed for a -40*F ambient temperature. The outer walls and support plates of the package are made of stainless steel which would not be adversely affected by this temperature. The polyurethane foam has a lower operating limit of -100*F.
Containment is provided by the stainless steel source assemblies. The packaging was subjected to the penetration test without loss of shielding or structural integrity.
The water spray test would not effect the package. An engineering analysis was used to show that the package would not be adversely affected by the compression test.
The packaging was shown to meet the four-foot drop test on the basis of test results from the 30-foot drop tests described below.
A prototype of the packaging was subjected to physical tests to evaluate the adequacy of the design for the Hypothetical Accident Conditions in 10 CFR Part 71. Prior to the tests, a radiation profile was made of the packaging.
Eight dumy source assemblies w'ere installed to allow determination of any displacement of the sources during the tests. The packaging was first dropped from 30 feet onto a steel plate supported on asphalt and crushed rock. The packaging impacted tr 9 target at an angle of approximately 45 degrees from the vertical on the boti.cm rim. The packaging was then dropped a second time onto the target from a height of 30 feet, striking on its top rim at an angle approximately 75 degrees from vertical.
Following the free-drop tests, the packaging was twice subjected to the 40-inch puncture test.
In the first test, the top of the packaging contacted the 6-inch diameter pin.
In the second test, the packaging was in a horizontal position, striking the pin on the cylindrical portion of the lid.
The packaging remained structurally intact throughout the testing and the dumy source assemblies i emained in the proper position.
Thermal Under Normal Conditions of Transport, the heat source of 1,000 curies of iridium-192 will have no adverse thermal effect on the package. The package will also sustain the 1475 F, one-half hour fire test specified in Appendix B of 10 CFR Part 71. The melting temperature of the structural and shielding materials are well in excess of the fire temperature. The internal pressure within the source assembly is within acceptable limits. The applicant has adequately shown that formation of iron-uranium eutectics would not occur.
The packaging will maintain its containment and shielding effectiveness under the fire test condition in 10 CFR Part 71.
3 Shielding The applicant obtained a radiation profile of a Model No. 820 package con-taining 860 curies of iridium-192 in eight source assemblies. The results of this measurement indicate that the external dose would be within allowable limits following the Normal Condition of Transport and the Hypothetical Accident Conditions in Appendix B of 10 CFR 71.
IgCharlesE.MacDonald, Chief lj Transportation Certification Branch Division of Fuel Cycle and FEB 151980 Material Safety, NMSS
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