Thursday, May 12, 2016

Main Drain Testing

The following section shows a number of main drain tests.

The next photo reportedly shows a main drain test:

The next photo appears to show main drain testing at a strip mall:

Below a photograph may show a riser where the main drain is not piped to a drain. This system may not be in compliance with standard NFPA 13 or 13R design.

The photo below may show a gauge installation on a main drain that may not read correctly due to the gauge set design/ and installation:

Below, a photo of a heat traced insulated main drain.  Possible slow or previous leak is evident:

Photographed below is a main drain that is not piped to discharge into a drain or outside a structure:

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