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Crashworthy sealed pressure vessel for plutonium transport

Description: A rugged transportation package for the air shipment of radioisotopic materials was recently developed. This package includes a tough, sealed, stainless steel inner containment vessel of 1460 cc capacity. This vessel, intended for a mass load of up to 2 Kg PuO/sub 2/ in various isotopic forms (not to exceed 25 watts thermal activity), has a positive closure design consisting of a recessed, shouldered lid fastened to the vessel body by twelve stainless-steel bolts; sealing is accomplished by a ductile copper gasket in conjunction with knife-edge sealing beads on both the body and lid. Follow-on applications of this seal in newer, smaller packages for international air shipments of plutonium safeguards samples, and in newer, more optimized packages for greater payload and improved efficiency and utility, are briefly presented.
Date: January 1, 1980
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Pu/U safeguards samples licensed for the PAT-2

Description: A development program for a Lightweight Air-transportable Accident Resistant Container (LAARC), to be used for the timely transport of plutonium or uranium safeguards samples to International Atomic Energy Agency (IAEA) laboratories, in support of the Non Proliferation Treaty (NPT), has resulted in the availability of the Plutonium Air Transportable Model 2 Package (PAT-2 Package). The PAT-2 can survive a severe aircraft crash and resulting fire, providing a virtually unassailable sealed pressure vessel that meets all statutory requirements for plutonium containment, shielding, and criticality. The package, 381 mm in diameter and 356 mm high, weighs 33 kg, and is not licensed for the shipment of certain defined safeguard samples. A US Nuclear Regulatory Commission Certificate of Compliance and a US Department of Transportation IAEA Certificate of Competent Authority have been issued. These certificates (licenses) permit the transport of various isotopic compositions of plutonium, uranium, or mixtures, in the solid forms of oxide powder, pellets, or metal, in a form not to exceed 15 grams fissile fraction, not to exceed 120 grams total mass, and not to exceed 2 watts decay heat. Also, 3 grams of the salts plutonium sulfate tetrahydrate or plutonium nitrate dihydrate may be shipped. The licenses cite additional restrictions on packaging, handling, and transportation; compliance with these conditions is required by US and IAEA transport regulations.
Date: January 1, 1982
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Plutonium accident resistant container project

Description: The PARC (plutonium accident resistant container) project resulted in the design, development, and certification testing of a crashworthy air-transportable plutonium package (shipping container) for certification by the USNRC. This PAT-1 (plutonium air transportable) package survives a very severe sequential test program of impact, crush, puncture, slash, burn, and water immersion. There is also an individual hydrostatic pressure test. The package has a payload mass capacity of 2 kg of PuO2 and a thermal capacity of 25 watts. The design rationale for very high energy absorption (impact, crush, puncture, and slash protection) with residual high-level fire protection, resulted in a reasonalby small air-transportable package, advancing the packaging state-of-art. Optimization design iterations were utilized in the areas of impact energy absorption and stress and thermal analysis. Package test results are presented in relation to radioactive materials containment acceptance criteria, shielding and criticality standards. (14 figs, 7 tables)
Date: May 1, 1978
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Plutonium accident resistant container project. [Air transport]

Description: The PARC (plutonium accident resistant container) project resulted in the design, development, and certification testing of a crashworthy air-transportable plutonium package (shipping container) for certification by the USNRC (Nuclear Regulatory Commission). This PAT-1 (plutonium air transportable) package survives a very severe sequential test program of impact, crush, puncture, slash, burn, and water immersion. There is also an individual hydrostatic pressure test. The package has a payload mass capacity of 2 kg of PuO/sub 2/ and a thermal capacity of 25 watts. The design rationale for very high energy absorption (impact, crush, puncture, and slash protection) with residual high-level fire protection, resulted in a reasonably small air-transportable package, advancing the packaging state-of-art. Optimization design iterations were utilized in the areas of impact energy absorption and stress and thermal analysis. Package test results are presented in relation to radioactive materials containment acceptance criteria, shielding and criticality standards.
Date: September 1, 1978
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Reduced-size plutonium sample processing and packaging for the PAT-2 package

Description: A light-water container for the air transport of plutonium safeguards samples, the PAT-2 package, has been developed in the USA and is now licensed by the US NRC (Certificate of Compliance) and the US DOT (IAEA Certificate of Competent Authority). The very limited available space in this package for plutonium-bearing samples required the design of small-size canisters to meet the needs of international safeguards. The suitability of a new small canister and vial for powder and solution samples has been tested in an intralaboratory experiment. The results of the experiment, based on the concept of pre-weighed samples, show that the tested canister and quartz vial can be used successfully for containing small size PuO/sub 2/ powder samples of homogeneous source material, as well as for dried aliguands of plutonium nitrate solutions.
Date: January 1, 1982
Creator: Kuhn, E.; Deron, S.; Aigner, H. & Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Test plan for determining breathing rates in single shell tanksusing tracer gases. Revision 1

Description: This test plan specifies the requirements and conditions for the injection of tracer gas (Helium (He)) into single shell tanks to determine breathing rates using periodic sampling. The eight tanks which have been selected at the time this Test Plan was developed are A-101, AX-102, AX-103, BY-105, C-107, U-103 (U-103 is counted twice, once during the winter months and once during the summer), and U-105. Other tanks to be sampled will be assigned by Pacific Northwest National Laboratory (PNNL) at a later date in the study process as resources allow, the document shall be revised as required. The sampling of headspace for each of these tanks shall be performed using available risers or the Standard Hydrogen Monitoring System (SHMS) cabinet as available. The tank farm vapor cognizant engineer shall assign the injection and sample testing point for each tank and document the point in the field work package. SUMMA TMI canisters, equipped in-line with dual particulate air filters and two silica gel sorbent traps will be used to collect the gas samples. The purpose of dual particulate air filters is to ensure no radioactive particulates are transferred to the SUMMA TMI canisters. The silica gel sorbent traps will effectively eliminate any tritiated water vapor that may be present in the sample gas stream. PNNL shall supply the tracer gases injection system and shall perform the analysis on the headspace samples. TWRS Characterization project shall inject the tracer gas and perform the sampling. Refer to Engineering Task Plan HNF-SD-TWR-ETP-002 for a detailed description of the responsibilities for this task.
Date: June 20, 1997
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Test plan for determining breathing rates in single shell tanksusing tracer gases. Revision 2

Description: This test plan specifies the requirements and conditions for the injection of tracer gases into eight tanks. Eight single shell tanks shall be injected with inert tracer gas, Helium (He), and then samples taken periodically to measure breathing rates. The eight tanks to be tested are; A-101, AX-102, AX-103, BY-105, C-107, U-103 (tested once in the winter and will be tested once in the summer), and U-105. The headspace of these tanks shall be sampled and analyzed periodically to obtain breathing rate information.
Date: June 26, 1997
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

Engineering work plan and design basis for 241-SY ventilation improvements

Description: There are three tanks in the 241-SY tank farm. Tank 241-SY101 and 241-SY-103 are flammable gas watch list tanks. Tank 241-SY-102 is included in the ventilation improvement process in an effort to further control air flow in the tank farm. This tank farm has only one outlet ventilation port for all three tanks. Flammable gas is released (may be steady and/or periodic) from the waste in the primary tank vapor space. The gas is removed from the tank by an active ventilation system. However, maintaining consistent measurable flow through the tank can be problematic due to the poor control capabilities of existing equipment. Low flow through the tank could allow flammable gas to build up in the tank and possibly exceed the lower flammability limit (LFL), prevent the most rapid removal of flammable gas from the tank after a sudden gas release, and/or cause high vacuum alarms to sound. Using the inlet and outlet down stream butterfly valves performs the current method of controlling flow in tank farm 241-SY. A filter station is installed on the inlet of each tank, but controlling air flow with its 12 inch butterfly valve is difficult. There is also in-leakage through pump and valve pits. Butterfly valves on the downstream side of each tank could also be used to control air flow. However, their large size and the relatively low air velocity make this control method also ineffective. The proposed method of optimizing tank air flow and pressure control capability is to install an air flow controller on the inlet of each existing filter station in SY farm, and seal as best as practical all other air leakage paths. Such air flow controllers have been installed on 241-AN and 241-AW tanks (see drawing H-2-85647).
Date: May 19, 1997
Creator: Andersen, J. A.
Partner: UNT Libraries Government Documents Department

Engineering task plan for determining breathing rates in singleshell tanks using tracer gas

Description: The testing of single shell tanks to determine breathing rates. Inert tracer gases helium, and sulfur hexafluoride will be injected into the tanks AX-103, BY-105, C-107 and U-103. Periodic samples will be taken over a three month interval to determine actual headspace breathing rates.
Date: April 2, 1997
Creator: Andersen, J.A.
Partner: UNT Libraries Government Documents Department

PAT-2 (Plutonium Air-Transportable Model 2) safety analysis report

Description: The PAT-2 package is designed for the safe transport of plutonium and/or uranium in small quantities. The PAT-2 package is resistant to severe accidents, including that of a high-speed jet aircraft crash, and is designed to withstand such environments as extreme impact, crushing, puncturing and slashing loads, severe hydrocarbon-fueled fires, and deep underwater immersion, with no escape of contents. The package meets the requirements of 10 CFR 71 for Fissile Class I packages with a cargo of 15 grams of Pu-239, or other isotopic forms described herein, not to exceed 2 watts of thermal activity. This SAR presents design and oprational information including evaluations and analyses, test results, operating procedures, maintenance, and quality assurance information.
Date: July 1, 1981
Creator: Andersen, J.A.; Davis, E.J.; Duffey, T.A.; Dupree, S.A.; George, O.L. Jr. & Ortiz, Z.
Partner: UNT Libraries Government Documents Department