Webb) postulated accidents of Class 2, which can be assumed to occur less frequently than once during any period of a thousand operating years; 7)design extension conditionshall … WebPostulated Initiating Event (PIE): An event identified during design as capable of leading to anticipated operational occurrences or accident conditions. Note: The primary cause of a PIE may be credible equipment failures and operator errors (both within and external to the facility) or human induced or natural events (IAEA Safety Glossary, 2016).

Joint ICTP-IAEA Essential Knowledge Workshop on Deterministic …

Webpostulated initiating event with all its consequential failures, if any. Based on probabilistic insights, the applicant can propose that a postulated single initiating event is considered in a different design basis category (e.g. C3b) and … Webpostulated initiating event with all its consequential failures, if any. Based on probabilistic insights, the applicant can propose that a postulated single initiating event is considered … dialysis albumin levels

Identification of the Postulated Initiating Events of Accidents of a ...

Web1 Nov 2024 · Before developing the event tree (ET), a list of postulated initiating events (PIEs) is required to be identified, which should be comprehensive enough to cover all causal events that perturb... WebPostulated Initiating Event PIE Figure 1: Defence in Depth Diagram. The Postulated Initiating Event (PIE) is the point in the fault sequence at which normal operation and planned control of the safety function is lost. If nothing was done to rectify the situation the fault sequence would escalate, leading to radiation exposure of individuals. Webinitiating events during operation at power” has been also done to confirm whether the basis of the PSA are robust and to gain confidence on its completeness. The GDA Step 3 review … dialysis allnurses