a measure of how much pollution an ecosystem can tolerate.

Equipment that requires an uninterrupted power input to prevent damage or injury to personnel, facilities, or itself.

The load point at which any uncontrolled movement will result in hazardous safety conditions.

As defined by the Nuclear Regulatory Commission, "A critical load is a load of magnitude or kind that under certain conditions, if dropped, could result in damage leading to unacceptable release of radioactivity or impair the capability to safely shut down the plant."

Equipment that must have an uninterrupted power input to prevent damage or loss to a facility or to itself, or to prevent danger of injury to operating personnel.

The Critical Load is known to be the devices or equipment that has or will fail as a result of power loss/power problems; subsequently causing loss of data or function and promoting unsafe operating conditions.

(1) Carrying capacity is the ability of eco-systems/the earth to bear environmental load without significant damage. The threshold is the critical load. (2) The maximum load that a given system can tolerate before failing.

A quantitative estimate of an exposure to one or more pollutants below which significant harmful effects on specified sensitive elements of the environment do not occur, according to present knowledge.

the highest deposition load that will not cause chemical changes leading to long-term harmful effects on the most sensitive ecological systems.

A target for reductions of wet sulphate deposition in Eastern Canada, designed to protect moderately sensitive freshwater systems (20 kg/ha/yr).