IED Clearance Good Practice Guide

3.2.2.ORGANIC PEROXIDE-BASED HME s (OPS)

A very sensitive HME where precursors can be sourced easily. No requirement for a detonator due to it being a primary explosive. Colour can vary depending on the precursors or additives used.

ׁ WARNING. As the FoIs below suggest, OP-based HMEs are EXTREMELY SENSITIVE. Use extreme caution and only handle if absolutely necessary. Even heat from direct sunlight can cause an explosion.

Two of the most common OP-based HMEs are:

Hexamethylene triperoxide diamine (HMTD)

Identifiers

Clear to white crystals or powder.

Figure of Insensitivity (FoI)

Approx. 5.

Extremely sensitive and susceptible to electrostatic discharge. Due to its sensitivity from heat, it may be stored in a cool place like a fridge. Very toxic, ensure area is well ventilated. Use impermeable PPE.

Notes

Triacetone triperoxide (TATP)

Identifiers

Clear to white crystals or powder.

Figure of Insensitivity (FoI)

Approx. 5.

Extremely sensitive and susceptible to electrostatic discharge. Due to its sensitivity from heat, it may be stored in a cool place like a fridge. Very toxic, ensure area is well ventilated. Use impermeable PPE.

Notes

3.2.3. POTASSIUM CHLORATE-BASED HME s Potassium chlorate is used in the manufacture of textiles and matches, as well as other applications. By itself it is an odourless white crystal or powder which can be mixed with a fuel to form an explosive. Most potassium chlorate-based explosives are sensitive to shock and friction, making them dangerous to handle.

Potassium chlorate and fuel oil (PCFO)

Identifiers

Diesel or other fuel oil odour.

Figure of Insensitivity (FoI)

Varies.

Notes

Can be initiated with a detonator, does not require a booster.

IEDD task conduct

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