UPVC Drainage Pipe Tightness Test Leakage

Allowable leakage = 0.0046·D; measured leakage q = W/(2·T·L); average = q·1440.

Pipe & section parameters

Pipe inner diameter D mm

Pipe material

Joint type

Test section length L m

Allowable leakage

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m³/(24h·km)

Leakage measurement record

No.	Start time T1	End time T2	Constant pressure time T	Top-up water W	Measured leakage q

Average measured leakage

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m³/(24h·km)

Allowable leakage

—

m³/(24h·km)

Judgement

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Allowable leakage = 0.0046·D (m³/(24h·km)); q = W/(2·T·L) (L/(min·m)); average = q·1440 (m³/(24h·km)). The section passes when the average measured leakage is not greater than the allowable leakage.