Raupiano Plus Product Book | Rehau | Reece Plumbing

RAUPIANO PLUSLEAK TEST10.10.2 Air TestThe leak test must be carried out in accordance with AS/NZS 3500.2For pipes installed below ground, testing shall be conducted prior to theplacement of the trench fill (backfill).10.1 Hydrostatic testWhere there are water restrictions or the network provider has a watermanagement strategy, hydrostatic testing may not be permitted, in whichcase an air or vacuum seal test must be conducted. In accordance withsection 13 of AS/NZS 3500.2The sanitary plumbing and sanitary drainage shall be filled with water -(a) in the case of sanitary drainage, to a height of not less than 1mabove the pipe soffit level at the highest point of the section being tested;(b) in the case of sanitary plumbing, to the spill level of the highestfixture or to the flood level of the lowest sanitary fixture, whichever ishigher; and(c) in the case of pipe installed below ground, to a height not lessthan 2 m (or 20 kPa ) above the pipe soffit level at the highest point ofthe section being tested or 2 m (or 20 kPa ) above ground water table,whichever is the greater.Alternatively, the test can be carried out with air.The air test is carried out with:- Test pressure 15 kPa1. Ensure firm and sealed seating of plugs.2. Pressurise the system and stabilize for a minimum of 3 minuteswhile checking for leaks3. After pressure is stabilized commence the test by allowing thepressure to reduce to 10 kPa4. Start test time and record drop in pressure during the test time5. The section of sanitary plumbing or sanitary drainage being testedshall not have a drop in pressure greater than 3 kPa over theminimum test duration specified in Table 10.1Test Length (m)Pipe size50 100 150 120 250 300DNMinimum test duration, min110 2 2 2 2 3 3160 3 3 3 6 6 6Table 10-1 Minimum test duration for Air Test in minutesThe pressure shall be maintained without leakage for at least 15 min.The source of any leak shall then be ascertained and any defectsrepaired. The section under test shall then be retested.48