The policy is designed to cover explosion (the sudden and violent rending or tearing apart of the permanent structure of a boiler or other apparatus by force of internal steam or fluid pressure) and collapse (the sudden and dangerous distortion of any part of a boiler or other apparatus by bending or crushing caused by steam or fluid pressure).

Among covers provided by the policy are: damage to the boiler or other apparatus described in the schedule, damage to auxiliaries and surrounding property e.g. buildings and machinery, liability of the Insured at law for fatal or non-fatal injuries sustained by any non-employee, liability of the Insured at law for damage to property belonging to third parties. The policy can also be extended to cover inland transit, extra cost for overtime, express delivery and airfreight.