[2C2] Remote internal inspection of pressure vessels and tanks: HOIS’s recommended practice
T Conder
ESR Technology Ltd, UK
Traditionally, determination of the internal condition of pressure vessels and tanks has relied heavily on internal visual inspection (IVI), which often necessitates extensive cleaning, followed by manned entry. This introduces significant hazards to the inspector, such as exposure to hazardous atmospheres in confined spaces. To mitigate these challenges, alternative inspection methodologies have been increasingly adopted.
Non-intrusive inspection (NII) and remote internal inspection (RII) have emerged in recent years as viable alternatives to IVI.
NII involves the application of externally deployed NDT techniques to assess the internal condition of a vessel while it remains operational (or out of service). However, NII is not universally applicable. Certain inspections, such as those involving furniture within vessels or complex geometries, still necessitate internal assessment. RII, using visual inspection by camera, or advanced robotics to deliver remotely applied NDT, provides a means to inspect internal surfaces remotely, often eliminating or reducing the need for personnel entry. While potentially offering enhanced data collection, the capabilities of each inspection system need to demonstrate they are fit for purpose.
HOIS has developed a recommended practice, HOIS-RP-058, to provide a structured and auditable approach to planning, implementing and evaluating RII inspections to ensure the best possible inspection outcomes.
Non-intrusive inspection (NII) and remote internal inspection (RII) have emerged in recent years as viable alternatives to IVI.
NII involves the application of externally deployed NDT techniques to assess the internal condition of a vessel while it remains operational (or out of service). However, NII is not universally applicable. Certain inspections, such as those involving furniture within vessels or complex geometries, still necessitate internal assessment. RII, using visual inspection by camera, or advanced robotics to deliver remotely applied NDT, provides a means to inspect internal surfaces remotely, often eliminating or reducing the need for personnel entry. While potentially offering enhanced data collection, the capabilities of each inspection system need to demonstrate they are fit for purpose.
HOIS has developed a recommended practice, HOIS-RP-058, to provide a structured and auditable approach to planning, implementing and evaluating RII inspections to ensure the best possible inspection outcomes.
