99% reliability definition

99% reliability means that water supply is maintained round-the-clock even under extreme drought condition with a return period of one in 100 years. “Return period” is the average number of years during which a certain severity of drought will occur once, statistically. A longer return period means a rarer chance of occurrence of a more severe drought.
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Related to 99% reliability

  • Reliability means the degree of performance of the elements of the electric system that results in electricity being delivered to and from an applicant in the amount desired while avoiding adverse effects on the adequacy and security of the electric supply, defined respectively as:

  • NERC Reliability Standards means the most recent version of those reliability standards applicable to the Generating Facility, or to the Generator Owner or the Generator Operator with respect to the Generating Facility, that are adopted by the NERC and approved by the applicable regulatory authorities, which are available at ▇▇▇▇://▇▇▇.▇▇▇▇.▇▇▇/files/Reliability_Standards_Complete_Set.pdf, or any successor thereto.

  • Reliability Standards means the criteria, standards, rules and requirements relating to reliability established by a Standards Authority.

  • Availability and Reliability means the probability that a component shall be operationally ready to perform its function when called upon at any point in time.

  • NYSRC Reliability Rules means the rules applicable to the operation of the New York Transmission System. These rules are based on Reliability Standards adopted by NERC and NPCC, but also include more specific and more stringent rules to reflect the particular requirements of the New York Transmission System.