BS 470:1984

This standard BS 470:1984 Specification for inspection, access and entry openings for pressure vessels is classified in these ICS categories:

• 23.020.30 Gas pressure vessels, gas cylinders

This British Standard specifies requirements for the provision and dimensions of sighthole, handhole, headhole and manhole openings into static and mobile pressure vessels requiring inspection facilities. It does not include openings for steam raising plant because of the different problems associated with these vessels, which may require separate consideration.

Requirements for the provision and dimensions of openings into static and mobile pressure vessels.