The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009

12.—(1) The water system shall be capable of withstanding an internal water pressure not less than 1½ times the maximum pressure to which the installation or relevant part is designed to be subjected in operation ( “the test pressure”). N.I.

(2) This requirement shall be deemed to be satisfied—

(a) in the case of a water system that does not include a pipe made of plastics, where—

(i) the whole system is subjected to the test pressure by pumping, after which the test continues for one hour without further pumping;

(ii) the pressure in the system is maintained for one hour; and

(iii) there is no visible leakage throughout the test;

(b) in any other case, where either of the following tests is satisfied—

TEST A	TEST B
(i) the whole system is subjected to the test pressure by pumping for 30 minutes, after which the test continues for 90 minutes without further pumping; (ii) the pressure is reduced to one third of the test pressure after 30 minutes; (iii) the pressure does not drop below one third of the test pressure over the following 90 minutes; and (iv) there is no visible leakage throughout the test.	(i) the whole system is subjected to the test pressure by pumping for 30 minutes, after which the pressure is noted and the test continues for 150 minutes without further pumping; (ii) the drop in pressure is less than 0.6 bar (60kPa) after the following 30 minutes, or 0.8 bar (80kPa) after the following 150 minutes; and (iii) there is no visible leakage throughout the test.

Commencement Information

I1 Sch. 2 para. 12 in operation at 3.8.2009, see reg. 1(1)