Under the Pressure Equipment Regulations (PER) and SANS 347, any boiler, steam generator, or pressurized vessel operating at a design pressure exceeding 50 kPa must undergo statutory external inspection every 12 months and internal hydrostatic pressure testing every 36 months by a SANAS-accredited Approved Inspection Authority (AIA).
SANS 347 Hazard Categorization: Categorizes vessels from SEP (Sound Engineering Practice) up to Category IV high-hazard boilers.
36-Month Hydrostatic Test: Pressurized vessels must be hydraulically pressure tested at 1.25x design pressure every 3 years.
Annual Safety Valve Calibration: Safety relief valves must be stripped, calibrated, and lead-sealed every 12 months.
Boiler Attendant Competency: Boiler operators must hold verified accredited certification in safe boiler operation.