Friday, April 29, 2016

Alarm Valve Found Off (Outside Closed Curb Box/Street Valve)

The system shown here was found off - that is the water supply was found off.  The water supply was turned off OUTSIDE and UPSTREAM of this riser at an outside curb box street valve [not shown] due to a previously reported and repaired street leak.  The curb box/street valve was never turned back on.  The pressure on the riser supply side gauge is zero but you will note the OS&Y control valve is open. Pressure remains on the upper system side pressure gauge due to trapped pressure above the alarm valve.

It is important to tag these systems out of service.

The riser is also missing control valve tamper switch or chain lock and a hydraulic calculation placard.  The water motor gong [not photographed] alarm line 1/4 turn ball valve should also be sealed open or electrically tamper protected.

Location: Qatar.

Another system off, Kuwait:

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