The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Traditional approach in Decision-Making in nuclear plants & regulatory bodies is based on engineering judgment, O&M experience & technical specifications. However, this approach is conservative and at times tends to be arbitrary in nature. This is because these are prescript by the designers or regulators. So, no quantified inputs go to decision making criteria for plant management. The...
Risk analysis, or hazard analysis, is a structured tool for the evaluation of potential problems which could be encountered in connection with the use of any number of things, from driving a car, riding on public transportation, taking a drug, or using a medical instrument. We live in a world full of risks, with varying likelihoods and consequences. Risk analysis and management is a complex subject...
Operational Event is any event which happened at a nuclear power plant leading to an unplanned transient or significantly affecting the plant response characteristics. Such events may be caused by operator errors or equipment failures. The range of events could be from an apparently insignificant event to a transient that leads to reactor trip and subsequent actuation of designed safety systems or...
Risk Based Inspection (RBI) is an emerging method of inspection, which integrates risk along with current deterministic approaches for prioritizing and managing the efforts of an inspection program. A pilot study on implementation of RBI was conducted in a hydrogen sulphide based chemical plant in India. The RBI study was reviewed by the regulatory authority. This paper highlights the modification...
This paper aims to develop a graphical method to facilitate the identification of risk and cost of postponement of restoration for repairable components which are periodically tested and whose failures are hidden, i.e, are detectable by inspection or upon demand. The paper focuses on the items which are under aging, however, the methodology is flexible to implement for any aging pattern. The paper...
Risk is inherent in every activity taken up by human beings be it potential or obvious, it is accepted or tolerated. Risk posed due to nuclear industry has always been a cause of concern to the individual, society, government and the regulator. The Nuclear Fuel Cycle Faculty (NFCF) encompassing mining to waste management activities has been diligently associated with diversified risks. The risk management...
PSA provides an integrated model of the overall safety of the plant, which puts the safety issues in perspective, and helps in safety decisions related to both design and operations. NAPS Level-l PSA has been completed with the objective of presenting an integrated picture of safety of the NAPS which encompasses design, operational practices, component reliability, dependencies and human reliability...
In this paper, a general framework is given for quantitative risk assessment in large scale systems. As a case study, the leakage risk in natural gas pipeline has been taken into consideration. This system, similar to every other large scale system, involves two major problems of “uncertainty” and “complexity”. To eliminate the latter one, “hierarchical structure” has been adopted and the “uncertainty...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.