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Home Services Pressure Testing

Pressure Vessel Testing

Pressure vessel testing is required, in terms of the South African Pressure Equipment Regulations (PER), to be performed every three years on any vessel with a working pressure of 50kPa or higher. Aside from being a requirement of law, regular pressure testing just makes sense. Pressure vessels store compressed air at many times that of atmospheric pressure and, as such, can be dangerous if they are not properly maintained and regularly tested. By ensuring that any air receivers or other vessels under pressure are compliant with SANS347, you are ensuring a healthier, safer work environment.

SANS 347 is the occupational health and safety code governing categorization and conformity assessment criteria for all pressure equipment and is incorporated into the Pressure Equipment Regulations (PER). Pressure vessel testing is performed in order to check the integrity of air receivers or other vessels under pressure. The test comprises of an internal and external inspection to check for corrosion, random thickness testing and hydrostatic testing to check for any leaks or cracks on the vessel. Compliance with the PER ensures that accidents like the one shown below don't happen.

The video below was shot by a DIY compressor user. In this case it was a 50 litre air receiver, imagine the damage from a 2000 litre receiver exploding. 



Compressed air…not hot air.

Unfortunately, companies using compressed air are often taken in by the hot air of fraudulent operators. The PER states that any pressure testing is required to be performed under the auspices of a SANAS approved Authorised Inspection Authority (AIA). Compressed air stored in faulty receivers can become explosive and cause serious injury or death as well as damage to equipment. The question becomes, is this risk worth the few hundred rand saved by having the test performed by unauthorised personnel?

At Plant Services we only use reputable inspection authorities and offer pressure vessel testing that conforms to the Pressure Equipment Regulations and is compliant with all companies’ Occupational Health and Safety requirements. In our 30 years of dealing with air compressors and compressed air systems, we’ve seen all sorts of fraudulent antics by unscrupulous companies and individuals and in the end it's the customer that ends up paying.

If the price of pressure testing seems to good to be true, ask the service provider to forward you the CP certificate and the SANAS registration number of the AIA being used. Recently a company had all the vessels on their plant tested and when it came time to have their audit done, it was discovered that the company was issued test certificates by a fraudulent operator and had to have all their air receivers tested again at considerable cost. Responsibility for the testing lies on you and in the event of insurance or workman’s compensation claims, failure to comply can result in non-payment and lawsuits. 

At Plant Services, we do things right. We design, install, service and maintain compressed air systems for any application, from heavy industry to medical. We supply lubricated and oil free air compressors, air receivers, pneumatic tools, compressed air dryers,filters and other ancillaries to the air power system, and we pride ourselves on the fact that we always do things to specification. 


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Plant Services

Unit 3, 15 Lood Street
Cape Town (map)

Tel:   021 982 0496 / 7

Fax: 021 982 0498

Cell: 084 554 4318

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