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Environmental Services - Inspection
Connection, Plan Review
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Plan Review
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In the State of Wisconsin there must be a way
to shut the
fuel pump off at the dispenser. Where do I find wording that states
this?
Pump stop, as in a manually operated switch must be
installed in accordance with NFPA 30A (1987) 4-2.3.
A control shall be provided that will permit the pump to
operate
only when a dispensing nozzle is removed from its bracket or normal
position with respect to the dispensing device and the switch
on this dispensing device is manually actuated.
This control shall also stop the pump when all nozzles have been
returned, either to their brackets or to the normal nondispensing
position.
Commentary stated in NFPA 30A is as follows: The term "all nozzles"
should be interpreted to mean all nozzles being fed from any one pump.
A proposal was submitted to the Technical Commitee to allow a single-action
dispensing nozzle that activates the pump upon removal from its
bracket. After due consideration, the proposal was rejected. The
Commitee felt that the second positive action by
the user
ensured greater attention to the dispensing operation. The
single-action dispensing nozzle failed to provide a positive pump
shutoff. The Commitee felt that the proponent did not demonstrate that
safetty was enhanced by the single-action nozzle.
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