Chemical Compatibility Testing Final Report Including Test Plans and Procedures

Nimitz, Jonathan S.; Allred, Ronald E.; Gordon, Brent W.; Nigrey, P. J.; McConnell, P.

doi:10.2172/783994

Cited by 7 publications

(8 citation statements)

References 8 publications

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“…From Table B-1 the HDPE ultimate strength half-value dose in air at a dose rate of 500 Rad/hr was 2.6 Mrad (Brandrup and Immergut 1989). The basic mechanical properties of a typical polymer start to change due to irradiation degradation at a total dose greater than 1 to 10 Mrad (Phillips 1988;Koerner et al, 1990;Nimitz et al 2001;Needham et al, 2004), with levels as high as 100 Mrad being listed as acceptable . Therefore a total dose of 2.6 Mrad appears to be a reasonable limit for total dose to HDPE geomembranes without significant impact.…”

Section: Discussionmentioning

confidence: 99%

“…High density polyethylene (HDPE) degradation by high energy irradiation can be similar to degradation by ultraviolet (UV) radiation (Needham et al 2004). It has often been cited that the basic mechanical properties of a typical polymer start to change due to irradiation degradation by main chain scission at a total dose greater than 1 to 10 Mrad (Phillips 1988;Koerner et al, 1990;Nimitz et al 2001;Needham et al, 2004). However, as discussed below, the impact of irradiation on polymers, and on HDPE in particular, is determined primarily by the total absorbed dose and the presence or absence of oxygen.…”

Section: B-2 High Energy Irradiation Degradation Of Hdpe Geomembranesmentioning

confidence: 99%

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Consideration of liners and covers in performance assessments

Phifer¹,

Seitz²,

Suttora³

2014

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The United States Department of Energy-Environmental Management (USDOE-EM) Office of Site Restoration has formed a working group to foster improved communication and sharing of information for personnel associated with Comprehensive Environmental Response, Compensation, and Liability Act and Resource Conservation and Recovery Act disposal cells across the DOE complex. The working group provides a forum to work towards more consistent assumptions, as appropriate, for technical and policy considerations related to performance and risk assessments in support of a Record of Decision and Disposal Authorization Statement. This report was prepared as part of the activities of that working group, and thus, includes input, suggestions, and comments from numerous people that have participated in that working group. Although the final contents are the responsibility of the authors, this feedback from the broader working group has substantially improved the content of the document and is greatly appreciated. This report is intended to serve as a resource for sources of information that can be consulted by people working on assessments involving long-term performance of disposal systems involving covers and/or liners, but should not be interpreted as official policy.

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Section: Discussionmentioning

confidence: 99%

Section: B-2 High Energy Irradiation Degradation Of Hdpe Geomembranesmentioning

confidence: 99%

Consideration of liners and covers in performance assessments

Phifer¹,

Seitz²,

Suttora³

2014

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“… aLOKSAK® clear plastic bags 3 , with hermetic seals designed to exclude air, dust, and moisture from reaching enclosed evidence (herein referred to as aLOKSAK® clear bag)  Griffolyn® 55ASFR white scrim bags 4 , with tear resistance, flame retardant and cold resistance properties (herein referred to as Griffolyn® scrim bag)  Pink SecoVac TM -132 bags 5 , with anti-static properties (herein referred to as PinkPoly bag)  ZiprWeld TM evidence tape 6 , with tamper indication technology  Saf-T-Pak® STP-104 1.25L secondary pressure vessels 7 (herein referred to as Saf-T-Pak® container)  Sarstedt TM screw cap microtubes 8 (herein referred to as Sarstedt DNA vial)  Paper case ID tags…”

Section: Methodsmentioning

confidence: 99%

“…Approximate dose levels were determined by referencing similar experiments previously performed at SRNL. 2 The body of knowledge regarding polymer behavior in radiological conditions was also consulted [4].…”

Section: Test Planmentioning

confidence: 99%

Effects of radiation on established forensic evidence containment methods

Ferguson

Duff

Clark

et al. 2011

J Radioanal Nucl Chem

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The Federal Bureau of Investigation (FBI) Laboratory is currently exploring needs and protocols for the storage of evidentiary items contaminated with radioactive material. While a large body of knowledge on the behavior of storage polymers in radiation fields exists, this knowledge has not been applied to the field of forensics and maintaining evidentiary integrity. The focus of this research was to evaluate the behavior of several traditional evidentiary containment polymers when exposed to significant alpha, beta, gamma, neutron and mixed radiation sources. Doses were designed to simulate exposures possible during storage of materials. Several products were found to be poorly suited for use in this specific application based on standardized mechanical testing results. Remaining products were determined to warrant further investigation for the storage of radiologicallycontaminated evidence. AbstractThe Federal Bureau of Investigation (FBI) Laboratory is currently exploring needs and protocols for the storage of evidentiary items contaminated with radioactive material. While a large body of knowledge on the behavior of storage polymers in radiation fields exists, this knowledge has not been applied to the field of forensics and maintaining evidentiary integrity. The focus of this research was to evaluate the behavior of several traditional evidentiary containment polymers when exposed to significant alpha, beta, gamma, neutron and mixed radiation sources. Doses were designed to simulate exposures possible during storage of materials. Several products were found to be poorly suited for use in this specific application based on standardized mechanical testing results. Remaining products were determined to warrant further investigation for the storage of radiologically-contaminated evidence.

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“…HDPE degradation by high energy irradiation can be similar to degradation by UV radiation . It has often been cited that the basic mechanical properties of a typical polymer start to change due to irradiation degradation by main chain scission at a total dose greater than 1 to 10 Mrad (Phillips 1988;Koerner et al, 1990;Koerner 1998;Nimitz et al 2001;. However, as discussed below, the impact of irradiation on polymers, and on high density polyethylene (HDPE) in particular, is determined primarily by the total absorbed dose and the presence or absence of oxygen.…”

Section: High Energy Irradiation Degradationmentioning

confidence: 99%

Scoping study. High density polyethylene (HDPE) in salstone service

Phifer

2005

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Chemical Compatibility Testing Final Report Including Test Plans and Procedures

Abstract: Sandia is a multiprogram laboratory operated by Sandia Corporation, A Lockheed Martin Company, for the United States Department of Energy under Contract DE-AC04-94AL85000.

Cited by 7 publications

References 8 publications

Consideration of liners and covers in performance assessments

Consideration of liners and covers in performance assessments

Effects of radiation on established forensic evidence containment methods

Scoping study. High density polyethylene (HDPE) in salstone service

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