A-20.01, r. 1 - Regulation respecting pressure vessels

Section 2 Disposition versions

2012-09-01

2. The following pressure vessels are excluded from the Act and its regulations:

(1)  steam, hot water or thermal fluid low-pressure boilers whose wet heating surface in less than 2.8 m2 or whose power does not exceed 30 kW;

(1.1)  open-circuit boilers not mentioned in paragraph 1 whose pressure cannot exceed 103 kPa and which have no valve between the boiler and the vent leading directly to the atmosphere;

(1.2)  hot water or steam boilers not mentioned in paragraphs 1 and 1.1 having all the following characteristics;

(a)  they have no steam drum or steam header;

(b)  the tubes and coils are not used to produce steam;

(c)  they are provided with manually operated nozzles or sprinklers that conduct the fluid directly into the atmosphere;

(d)  the tubes have an outside diameter not exceeding 25 mm and the pipes have a nominal diameter not exceeding 19 mm;

(e)  their water volume does not exceed 23 litres;

(f)  they are provided with a temperature control device that prevents the water temperature from exceeding 180 ºC;

(g)  they are provided with an overpressure safety relief device adjusted to and sealed at a pressure not exceeding the design pressure indicated on the boiler;

(2)  water heaters whose power does not exceed 30 kW or whose diameter does not exceed 600 mm;

(3)  hot water tanks not exceeding 600 mm in diameter and hot water tanks not provided with a power source and containing water at a temperature of 65 °C or less;

(4)  pressure vessels other than those mentioned in subsection 3 not provided with a direct power source, containing vapour or a gas whose pressure cannot exceed 103 kPa or a liquid whose vapour pressure cannot exceed 205 kPa in absolute pressure at the maximum operating temperature. This exception does not apply to refrigerating systems;

(4.1)  pressure vessels used as the enclosure for gas pressurized electric equipment and any tank forming a part thereof;

(5)  hydropneumatic tanks with a diameter not exceeding 600 mm and with a volume not exceeding 0.453 m3;

(6)  expansion tanks with a diameter not exceeding 600 mm;

(7)  low-pressure piping and fire fighting piping;

(8)  (paragraph revoked);

(9)  (paragraph revoked);

(10)  pressure vessels not provided with a direct power source with a volume not exceeding 0.0425 m3 or with a diameter not exceeding 152 mm.

O.C. 2519-82, s. 2; O.C. 1310-91, s. 2; O.C. 977-96, s. 1.