Insurance of plant under one of four main headings: boilers and pressure plant; engine plant; electrical and mechanical plant; and lifting machinery. In addition statutory and non-statutory inspection services can be provided. The insurances cover self-damage, damage to surrounding property, third party risks and engineering interruption insurance. Also, cover can be provided for deterioration of stock, computer risks, contractors’ plant and machinery erection and other miscellaneous insurances. The principal risks against which insurance is sought are explosion and collapse, breakdown, sudden and unforeseen physical damage, fragmentation risk/fragmentation policy (impact damage cover) and extraneous causes.