Legislation, Audits & Inspections13 min readPublished 18 August 2026

Pressure Equipment Regulations (PER): Boiler & Vessel Compliance

The complete statutory engineering guide to the Pressure Equipment Regulations (PER) in South Africa, covering steam boiler inspections, hydrostatic pressure tests, and AIA certification.

Industrial steam boiler room and pressurized piping network undergoing statutory 36-month internal inspectionStatutory 36-month boiler inspections, safety valve calibration, and AIA vessel certification.

1. Statutory PER Framework & SANS 347 Categorization

High-pressure steam boilers, autoclaves, and compressed air receivers present catastrophic explosion risks if not maintained to strict engineering standards. The Pressure Equipment Regulations mandate rigorous verification by accredited third-party AIAs.

Frequently Asked Questions

What is the statutory inspection interval for compressed air receivers?

Air receivers must be externally inspected every 12 months and undergo internal inspection and hydrostatic pressure testing every 36 months.

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Written by Diba Machinery & Pressure Vessel PracticeVerified by Orlinda Pieterson
Lead Pressure Equipment AuditorsPr.Eng, AIA Pressure Inspector, GCC

Diba BES is a 100% Black Women-Owned, Level 1 B-BBEE provider delivering occupational health & safety consulting, accredited workplace training, and commercial workplace services across South Africa since 2003.