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Part O – Plant Protection

Section 1 – Special Definitions

Boiler and Pressure Plant
Those parts of the permanent structure including fittings and direct attachments of Plant subject to
steam or other fluid pressure excluding except where specifically stated in the schedule:
a) superheaters or economisers
b) interconnecting piping or anything attached to such piping

c) ancillary electrical and mechanical plant
d) foundations, masonry, brickwork and chimneys.

Breakdown
a) The breaking, distortion or burning out of any part of an item of Plant while in ordinary use arising
from either mechanical or electrical defect in the item causing its sudden stoppage including any
resultant loss of cooling, lubricating or insulating oil or refrigerant or brine
b) the fracturing of any part of Plant by frost when such fracture renders such Plant inoperative

c) the complete severance of a rope forming part of Plant designed for lifting but not breakage or
abrasion of individual wires or strands even if this necessitates replacement of such rope.

Collapse
The sudden and dangerous distortion whether or not attended by rupture of any item of Boiler and
Pressure Plant caused by crushing stresses by force of steam or other fluid pressure other than pressure
of ignited flue gases.

Damage
Sudden and unforeseen damage.

Electrical and Mechanical Plant
All integral parts of Plant including the individual switchgear for a motor and the wiring between the
motor and its switchgear or between a generator and switchboard excluding foundations, masonry
or brickwork.

Explosion
The sudden and violent rending of any item of Boiler and Pressure Plant by force of internal steam or
other fluid pressure (other than pressure of chemical action or of ignition of the contents or of ignited
flue gases) causing bodily displacement of any part of such Plant together with forcible ejection of
the contents.

Lifting and Handling Plant
a) In respect of Plant comprising lifts, platform hoists and lifting tables all integral parts up to and
including main circuit breakers or control valves excluding any supporting structure or foundations,
masonry or brickwork
b) in respect of cranes and other lifting Plant:
i) all parts commencing in the case of a fixed unit at the point or points of anchorage and in the
case of a travelling unit at and including the track wheels and terminating in the case of any
unit at the hook, shackle or other connection to the burden rope or chain by which the load or
appliance is attached; and

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