These risks can be covered as an extension to a boiler and pressure plant policy but the insurance is limited to self-damage. The risks apply to plant of cast-iron construction and items with welded or brazed seams. Plant such as heating boilers, ironing machines and air-heating batteries would require the extension. The cause can be internal pressure, low water, water hammer, frost, etc. A valid claim only arises when the crack or weld failure gives rise to leakage of the contents.

The risks to cargo during transhipment or landing in small vessels.
***
Risks arising when cargo is being landed or transshipped in a small vessel.

Policy covering blocks, conveyors and cranes of all kinds. In addition to the periodical inspection service (compulsory for most items in this category), the policy covers breakdown but may be extended to cover sudden and unforeseen physical damage at the premises or while temporarily at other premises, including the transit risk, and damage to goods lifted (excluding installed plant and machinery) and own surrounding property. Damage by extraneous causes is generally included. Other options are available.