Defence and Security

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https://dspace.lib.cranfield.ac.uk/handle/1826/20714

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Browsing Defence and Security by Author "Coulon, Frederic"

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    ItemOpen Access
    Data supporting 'Evaluate the effects of Insensitive High Explosives residues on soil by using an Environmental Quality Index (EQI) approach'
    (Cranfield University, 2023-02-16 16:14) Persico, Federica; Temple, Tracey; Coulon, Frederic; Ladyman, Melissa
    Data presented show the fate and transport of Insensitive High Explosives (IHE) in two different soils, a pristine and a land-degraded soil. Results are also evaluating changes to the physical, chemical and biological sections of the soil over time. Moreover, and and Environmental Quality Index (EQI) has been developed and each value has been scored to understand if soil quality is impacted by the explosive presence.
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    ItemOpen Access
    Data supporting: 'Development of an environmental hazard-based rating assessment for defence-related chemical compounds in ecological soil systems'
    (Cranfield University, 2022-08-31 16:53) Persico, Federica; Temple, Tracey; Coulon, Frederic; Ladyman, Melissa
    Environmental hazard-based methods are commonly used to categorise the severity of chemical contamination to ecological soil systems, although a traffic-light approach (green, amber, red) has never been used to assess these consequences. A traffic light approach is an easy to interpretate data as it has a clear visual display which can provide an early warning approach for stakeholders to identify areas that require further investigation. This approach should be underpinned by extensive research data and systematic methods of development. However, the extent of reliable data available for specific chemicals can be limited and therefore decision making may rely on expert judgement. Therefore, in this study, an environmental hazard-based rating methodology was developed by combining the guidelines from the European Chemical Agency (ECHA) and the USEPA for Predicted Non-effect Concentration (PNEC) and Ecological Soil Screening Levels (Eco-SSL) for defence-related chemicals (2,4,6-trinitrotoluene (TNT), 1,3,5-trinitro-1,3,5-triazinane (RDX), cypermethrin, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS)). The developed hazard-based rating assessment was design to categorise the chemicals into low, medium and high environmental hazards priority to inform and ease the decision-making process for contaminated areas to ensure that sustainable operations are carried out.
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    ItemOpen Access
    Optimised accelerated solvent extraction of hexahydro-1,3,5-trinitro-1,3,5 triazine (RDX) from polymer bonded explosives
    (Cranfield University, 2018-06-04 08:56) Ladyman, Melissa; Mai, Nathalie; Temple, Tracey; Coulon, Frederic
    Raw HPLC data and calibration curves used to determine extraction efficiency of varying methods. The analysed data and produced graphs are also given. Numbers given are for % recovery of explosive (RDX or HMX) by extraction method/ optimized condition (ASE/ Sohxlet).
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    ItemOpen Access
    Quantitative Environmental Assessment of Explosive Residues from the Detonation of Insensitive High Explosive Filled 155 mm Artillery Shell
    (Cranfield University, 2022-01-14 08:30) Persico, Federica; Temple, Tracey; Ladyman, Melissa; Fawcett-Hirst, William; Gutierrez Carazo, Encina; Coulon, Frederic
    Following the detonation on a 155mm filled with an Insensitive High Explosive composition (IMX-104) composed by DNAN, NTO and RDX a sampling collection has been carried out to determine the residue deposition of the explosive residues. Half of a sampling arena (10m radius) has ben set up and filled with a 5 cm layer of sand. Samples have been collected in the area, following the Multi-Increment sampling technique, before and after the arena has been set up to determine if there was any cross-contamination after the detonation occurred. A rope has been used to create 2 x 2 m sections in which samples have been collected, following the multi-increment technique, in triplicates using spoons if sand was collected and sampling cores tools for soil. Samples have been stored at -20C for 3 months and t using the extraction technique by Temple et al, 2019 with Acetonitrile and water explosives residues have been analysed (always in triplicates).