Method of tracing drains

Details Method of tracing drains Method of tracing drains

2005-04-19

2005-04-19

Gagliardi, Albert (Department: 2878)

Radiant energy

Radiation tracer methods

C250S259000, C073S861070

Reexamination Certificate

active

06881953

ABSTRACT:
The claimed method of tracing drains starts with a comprehensive building survey in which all existing drains are numbered. A Master Blueprint and a Master Spreadsheet are created using information collected in the building survey. A tracer is used to determine the flow of storm water to and from the building's storm drains. A test location, consisting of a storm manhole or a sanitary manhole is then chosen and water is run continuously through this manhole. A non-toxic fluorescent tracer is added to the target sanitary drain and a sample of the water running through the test location is withdrawn. A fluorometer is used to detect the fluorescent signal of non-toxic fluorescent tracer in the sample of water withdrawn. This procedure is repeated until all test locations have been surveyed and the information recorded on the Master Blueprint and Master Spreadsheet. The information is used to replumb drains.

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