Overview


Chemical, oil & gas sectors are facing tougher mechanical integrity challenges due to regulatory requirement and long-term continuous operation demands.


As a part of Risk Based Process Safety (RBPS) approach, Risk-Based Inspection (RBI) is a risk assessment and management process that is focused on loss of containment of pressurized equipment in processing facilities, due to material deterioration.


These risks can be managed through equipment design optimization and appropriate inspection and maintenance strategy.


RBI Application


What kind of defect?

Identify potential corrosion mechanisms in accordance to the plant specific design and operation conditions. Inspection historic records can be referred.


Where to inspect?

Based on corrosion mechanism identified earlier, specific inspection area (eg bends, dead ends, low points, nozzles, etc) can be determined and prioritized.


How to inspect?

By knowing the corrosion mechanisms, appropriate inspection method can be recommended. Inspection method is determined on case-by-case basis.


When to inspect?

Information from the first three steps allows the generation of tailor-made inspection plan which considers the user's turn-around requirement and the risk criteria definition.


Advantage:


· Identify “Weak Points” and “Bad Actors”.

· More reliable equipment and plant operation benefit from optimized equipment design and improved inspection effectiveness.

· Increased safety by mitigating unplanned failure/ shutdown.

· Help users to make informed business decisions regarding inspection and maintenance expenses.

· Option to extend inspection interval duration where local authorities recognize RBI.

· A recognized way towards “Operational Excellence”.