3. This Regulation does not apply to the following pressure equipment nor to the accessories and piping connected to it:(1) a boiler:(a) of the high pressure kind, whose heating surface is 1 m2 or less or whose power is 10 kW or less;
(b) of the steam, hot water or thermal fluid low-pressure kind, whose wet heating surface is 3 m2 or less or whose power is 30 kW or less;
(c) whose pressure is 103 kPa or less, open circuit, and that has no valve between the boiler and the vent leading directly to the atmosphere;
(d) of the hot water kind, whose power is 60 kW or less, whose water temperature is 99 °C or less and whose pressure is 1,100 kPa or less;
(e) of the hot water or steam kind, that has the following characteristics:i. it has no steam drum or steam header;
ii. the tubes and coils are not used to produce steam;
iii. it is provided with manually operated nozzles or sprinklers that conduct the fluid directly into the atmosphere;
iv. the tubes have an outside diameter not exceeding 25 mm and the pipes have a nominal diameter not exceeding 19 mm;
v. its water volume does not exceed 23 litres;
vi. it is provided with a temperature control device that prevents the water temperature from exceeding 180 °C;
vii. it is provided with an overpressure safety relief device adjusted to and sealed at a pressure not exceeding the design pressure indicated on the boiler;
(2) a water heater whose diameter is 610 mm or less and whose power is 120 kW or less;
(3) a hot water tank whose diameter is 610 mm or less;
(4) a hot water tank that is not provided with a power source and that contains water at a temperature of 99 °C or less;
(5) a pressure vessel used as the enclosure for gas pressurized electric equipment and for any tank forming part thereof;
(6) a hydropneumatic tank whose diameter is 610 mm or less, whose volume is 450 litres or less and whose temperature is 65 °C or less;
(7) an expansion tank whose diameter is 610 mm or less and whose pressure is 205 kPa or less;
(8) a mobile pressure vessel not forming part of a pressure installation and used to transport gas or liquid under pressure or used for the propulsion or operation of a vehicle, a vehicle component or equipment thereof;
(9) pressure equipment whose primary design data and primary constraints come from the equipment’s operating conditions such as a pump, a compressor, a turbine, an engine or a hydraulic cylinder;
(10) well control pressure equipment used in the petroleum, gas or geothermal prospection and exploitation industry and in the underground storage and intended to contain or control the well’s pressure;
(11) pressure equipment used for research and experimentation purposes in a research or teaching establishment;
(12) a pressure vessel not provided with a direct power source and containing an incompressible liquid whose vapour pressure is 205 kPa or less in absolute pressure at the maximum operating temperature.