SAQCC Gas LPG Commercial/Industrial study guide
SAQCC Gas LPG Commercial/Industrial · Work through your exam, one topic at a time.
SAQCC Gas is a non-profit company formed by four member associations - LPGSA, SACGA, SARACCA and SAGA - to maintain a central database of registered and authorised gas practitioners. It has been officially appointed and mandated by the Department of Employment and Labour to register gas practitioners on the Department's behalf across four gas industries: natural gas, liquefied petroleum gas, air conditioning and refrigeration gas, and compressed industrial and medical gases. The LPG Commercial/Industrial registration route sits within the liquefied petroleum gas industry, whose member association is the Liquefied Petroleum Gas Association of South Africa (LPGSA). This page prepares candidates for the LPG Commercial/Industrial assessment, covering LPG properties and behaviour, cylinder and bulk installation practice, pressure regulation, ventilation and siting, combustion and flueing, leak testing, and the compliance documentation expected of a registered practitioner. The SAQCC Gas LPG Commercial/Industrial study guide has 4 sections and about 1,365 words.
01Liquefied Petroleum Gas (LPG)
LPG is a mixture of propane and butane (with small amounts of propylene/butylene) stored as a liquid under pressure. Candidates must know that LPG liquid expands roughly 0.2–0.3% per °C and that the vapour space above the liquid provides room for expansion - filling ratios exist precisely to prevent hydraulic lock.
362 words, about 2 min02Natural Gas
Natural gas is predominantly methane (typically 85–95%) with ethane, propane, butane, nitrogen and CO2, plus odorant (usually mercaptan) for leak detection. Candidates must know it is lighter than air (relative density about 0.55–0.65), so leaks rise and disperse, unlike LPG.
334 words, about 2 min03Air Conditioning and Refrigeration Gas
Candidates must know refrigerant families and their safety classifications: CFCs (phased out), HCFCs (e.g. R-22, being phased out), HFCs (e.g.
305 words, about 2 min04Compressed Industrial and Medical Gases
Candidates must understand gas cylinders as pressure vessels: their test intervals, markings (test date, working pressure, tare weight, cylinder identification), and the requirement for periodic hydrostatic or ultrasonic examination. Know valve types - the pin-index valve system (medical) and the BS 341 / cylinder valve outlet standards (industrial) - and that pin-index systems prevent wrong-gas connection on medical cylinders.
364 words, about 2 min