exceedance

plural exceedances

1. countableuncountableThe extent to which an action, activity or substance exceeds a limit set by recommended practice, legislation, etc.

   "Exceedances are decommissioned while they undergo remediation," Ms Hammat said.

   2025 September 9, Mya Kordic, “Lead in water at Perth Children's Hospital no risk to patient safety, WA health minister says”, in ABC News, Australian Broadcasting Corporation, retrieved 11 Sep 2025

   3 more examples

   A region is considered "nonattainment" of an air quality standard (NAAQS) if its estimated exceedance rate of the NAAQS is more than once per year over three years. Exceedances are counted in terms of days.

   1989, Ralph E. Morris, Mike W. Gery, Mei-Kao Liu, Gary E. Moore, Christopher Daly, Stanley M. Greenfield, “Sensitivity of a Regional Oxidant Model to Variations in Climate Parameters”, in Joel B. Smith, Dennis A. Tirpak, editors, The Potential Effects of Global Climate Change on the United States, volume 1, pages 2–18

   1997 December, US General Accounting Office, Aviation Safety: Efforts to Implement Flight Operational Quality Assurance Programs, GAO/RCED-98-10, Report to Congressional Requesters, page 24, On a periodic basis, airlines aggregate and analyze exceedances over time—for example, the number of unstabilized approaches at a particular airport per month, over the last 12 months.

   As defined in Chapter 2, an exceedance probability curve is a graphical representation of the probability that a certain level of loss will be exceeded over a future time period.

   2005, Patricia Grossi, Don Windeler, “Chapter 4 - Source, Nature, and Impact of Uncertainties on Catastrophe Modeling”, in Patricia Grossi, Howard Kunreuther, editors, Catastrophe Modeling: A New Approach to Managing Risk, page 78