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What are the standards for placing a tank near the house?

In Quebec, there is a code that stipulates measures that are required for handling, installation and use of propane-powered equipment.

These measures are intended to reduce the risk of accidents and ensure your safety. 
 

Tanks

In Quebec, tank installation standards are regulated by the Régie du Bâtiment du Québec. Regulations are available from the Canadian Standards Association in documents entitled Code sur le stockage et la manipulation du propane and Natural Gas and Propane Installation Codes. The following is a summary.

Total liquid capacity US gal (L)
Minimal distance in feet
(metres) between the
 tank and the
 property line –
an adjacent solid
concrete or stone
wall within prescribed clearance limits*
Minimal distance in feet (m) between the
tank and the wall
of the building made of
materials other than concrete or stone
Minimal distance in feet
(metres) between
the tank and
entrances to the building
Minimal distance in
feet (metres) between
the tank and an
adjacent reservoir**
Equal to or less than 125 (475)
None
None
3 (1)
None
Greater than 125 (475)
et equal or less than
1000 (3800)
10 (3)
10 (3)
10 (3)
3 (1)
Greater than 1000
(3800) and equal or
less than 2000 (7800)
10 (3)
25 (7.5)
25 (7.5)
3 (1)
Greater than 2000
(7800) and equal or
less than 5000
(19 000)
15 (5)
25 (7.5)
25 (7.5)
3 (1)
Greater than 5000
(19 000) and equal or
less than 10 000
(38 000)
25 (7.5)
25 (7.5)
25 (7.5)
3 (1)
Greater than
10 000 (38 000)
As per the relevant authority
(RBQ)
As per the relevant authority
(RBQ)
As per the relevant authority
(RBQ)
As per the relevant authority (RBQ)
* Distances between property lines may be modified by the relevant authorities (RBQ)
 ** If multiple tanks are being installed on a common base or, leaks may be reduced with permission from the relevant authority (RBQ)

Note: Regardless of the tank format in the table above, it must always be situated at least 10 feet (3,) away from any source of inflammation.