A. As the remaining thickness is equal to the design thickness, the thinning can be accepted.
No need to re-rate design pressure [except if very significant sudden loss from actual to design thickness and CA is small].
[Note: These terms are used differently by different persons but the intent for AICIP is below.]
Risk Management (B1) Overall management of risk to “optimise safety, efficiency and profitability”. It includes hazard identification, risk assessment, risk control and continued monitoring.
Risk assessment (B2.6) “quantification of total risk [i.e. likelihood of failure and consequence to life, property, environment & production] and is a combination of previous studies and analyses, which depend on equipment inspection procedures and incident reporting”.
Quality Assurance – the management system documented or not, which provides evidence and confidence that the quality of operations should provide products or services fit for purpose and to specification.
Risk Management is focused on overall management of risk in a business while quality assurance addresses overall management to provide a quality product [or service]. They are related and are essential parts of a “total management system”.
Risk Assessment is an important part of the overall process of management of risk.
All play a role in the overall control of pressure equipment to comply with the National Standard for Plant and most regulations.