BS 470 is a British standard that specifies requirements for the provision and dimensions of sight hole, handhole, head hole, and manhole openings into static and mobile pressure vessels requiring inspection facilities.
BS 470 does not include openings for steam-raising plants because of the different problems associated with these vessels, which may require separate consideration.
BS 470 on pressure vessels specification is useful for:
Pressure vessels in water distribution systems have several advantages, including extending the life of the pump and lowering the impact of hydraulic shocks on the system when the pump is turned on. Pumped water enters the vessel and compresses the air inside. The huge energy stored inside pressure vessels can lead to catastrophic mishaps if not managed carefully. Pressure vessel manufacturing is not an easy process, and safety is always a priority. The pressure of gases and volatile liquids within these vessels must be maintained at all times.
BS 470 guidelines address the general specifications, sizes, minimum number of openings, and positions that require inspection. Using BS 470 guidelines ensures safety, protection, and quality assurance for longer service life.