AET designs and manufactures wellhead severance charges and underwater focussed cutting charges for cutting plate, tubular members and mooring components. Focussed, or shaped charges, produce a more reliable and cleaner cut, with a lower explosive loading than alternative explosive methods.

Charges can be used down to 200m depth, and are custom designed and fabricated for each project. Charges can be designed for placement by either divers or remote operated vehicle (ROV). Up to 75mm (3 inch) steel can be cut with charge access from one side only. Up to 150mm (6 inch) mooring chain can be cut with opposed dual charges in a clamp-type unit. Flexible flow lines, 6" oil, 2" oil & gas and umbilical lines can also be cleanly severed by AET charges

AET also manufacture a series of wellhead severance, WS, charges in diameters suitable for shotcan insertion into 7 and 20 inch casings.