WATER REGULATIONS
G12.1 The whole installation should be tested hydraulically on completion by subjecting all supply and distributing pipes, fittings and connections to appliances, to an internal test pressure of 1.5 times the maximum operating pressure for the installation or the relevant part..
G12.2 For systems that do not include any plastics pipes (that is, rigid pipe materials such as copper, stainless steel, etc), the requirement shall be deemed to be satisfied if:
a. the whole of the system is subjected internally to the test pressure by pumping, after which the test continues without further pumping;
b.
the pressure in the system does not drop below the test pressure over the next one hour period and there is no visible leakage in accordance with Clause 3.1.12.3.3 of BS 6700.
G12.3 For systems that include any plastics pipes, the requirement shall be deemed to be satisfied if, either:
Test A
a. the whole of the system is subjected internally to the test pressure which is maintained by pumping for 30 minutes, after which the test continues without further pumping; and
b. the pressure in the system is care fully reduced to one third of the test pressure; and
c. the pressure does not drop over the following 90 minutes and there is no visible leakage;
or in accordance with Clause 3.1.12.3.4 (Test procedure A) of BS 6700, or
Test B
a. the whole of the system is subjected internally to the test pressure and is maintained by pumping for 30 minutes, after which the pressure is noted and the test is continued without further pumping; and
b.
the pressure drop is less than 0.6 bar after a further 30 minutes; and
c.
the pressure drop is less than 0. 2 bar after the next 120 minutes and there is no visible leakage,or in accordance with Clause 3.1.12.3.4 (Test procedure B) of BS 6700.
