My (UPDATED) top 10 tips regarding ASME PCC-3-2007: Inspection Planning Using Risk-Based Methods.

Here are my ASME PCC3 (UPDATED) quick top ten but I feel sure you could think of more.

1. PCC3 is based on API 580, Risk-Based Inspection and is written by mutual agreement of both The American Society of Mechanical Engineers (ASME) and the American Petroleum Institute (API), it is closely aligned with the RBI process outlined in API 580, which is oriented toward the hydrocarbon and chemical process industries. PCC3 is intended to generalize the RBI process applicability to a broader spectrum of industries outside of API. 2. It provides recognized and gen

erally accepted good practices that may be used in conjunction with Post-Construction Codes, such as API 510, API 570, and NB-23. ASME PCC-3-2007 is approved as an American National Standard (ANSI) on October 4, 2007. 3. The risk analysis principles, guidance, and implementation strategies presented in PCC3 are broadly applicable and developed for applications involving fixed pressure containing equipment and components and provide guidance to owners, operators, and designers of pressure-containing equipment for developing and implementing an inspection program. 4. It provides information on using risk analysis to develop and plan an effective inspection strategy which is a systematic process that begins with the identification of facilities or equipment and culminates in an inspection plan. Both the probability of failure and the consequence of failure are evaluated by considering all credible damage mechanisms that could be expected to affect the facilities or equipment. In addition, failure scenarios based on each credible damage mechanism are developed and considered. 5. The output of the inspection planning process is an inspection plan for each equipment item analysed that includes inspection methods that should be used, the extent of inspection (per cent of the total area to be examined or specific locations) and the inspection interval (timing) plus other risk mitigation activities. It also considers the residual level of risk after inspection and other mitigation actions have been implemented. 6. PCC3 presents the concepts and principles used to develop and implement a risk-based inspection program 7. It points out that the complexit

y of a risk analysis is a function of the number of factors that can affect the risk and there is a continuous spectrum of methods available to assess risk. The methods range from a strictly relative ranking to rigorous calculation. The methods generally represent a range of precision for the resulting risk analysis. Any particular analysis may not yield usable results due to a lack of data, low-quality data, or the use of an approach that does not adequately differentiate the risks represented by the equipment items. Therefore, the risk analysis should be validated before decisions are made based on the analysis results. 8. It discusses the logical progression for a risk analysis which is to collect and validate the necessary data and information, documents, drawings, photos, MDR’s etc. Then it talks about identifying damage mechanisms and damage modes to determine the probability of failure over a defined time frame for each damage mechanism. It goes on to identify credible consequence scenarios that will result from the failure mode or modes and determine the probability of each consequence scenario, considering the probability of failure and the probability that a specific consequence scenario will result from the failure. It then goes on to determine the risk, sensitivity analysis, It finally reviews the risk analysis results for consistency, reasonableness in order to develop an inspection plan and, other mitigation actions, and evaluate the residual risk. 9. When the risk in PCC3 is attached to an individual piece of equipment the relative effectiveness of different inspection techniques in reducing risk is analysed, estimated and quantified. If adequate informati

on is available optimization for planning purposes can take place as Inspection affects perceived risk, and physical actions such as mitigation activities performed as a result of an inspection affect the actual risk. 10. It points out that it is impo

rtant that sufficient information is collected to document the RBI analysis and sufficient data is recorded and maintained so that the analysis can be recreated or updated later by others who were not involved in the original analysis. It suggests that the data needs to be stored in a computerized database which will enhance the analysis, retrieval, and

management capabilities. The usefulness of the database is most important in managing recommendations, developed from the RBI analysis, and managing risk over time.

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