Berrys 2016 - page 18

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Technical Details
Opus is an electronic overfill prevention system located on the tank lid which is hard
wired through an intrinsically safe circuit to the Midas system at the tanker filling point.
The primary function of the Midas system is to prevent tanker misfuels, also to control
filling and eliminate storage tank overfills. The Opus probe is installed on the tank lid
with the probe section sitting ‘inside’ the tank space at a length that gives the client
their preferred safe working capacity level.
Once the fuel level in the tank reaches this safe working level a magnetic float system
triggers a signal to the Midas at the tanker filling position activating a series of pre-
programmed visual and audible alarms to alert the tanker driver to the impending
overfill situation. The factory default alarm condition closes the internal butterfly valve
by 90% for 20 seconds whilst alarming audibly and flashing a unique sequence of
LED lights to alert the driver to the imminent full closure. Once the 20 second alarm
phase is completed the Midas system logs the time and date of the alarm for full
traceability. If the driver has not had time to shut the tanker valve and drain his hose
before full closure he can use the standard Operators key fob to re-activate the Midas;
the result will be that the unit will drop immediately into the 20 second alarm loop.
Opus effectively removes the need for mechanical overfill prevention systems thereby avoiding health and safety issues such as
engineers working in confined spaces or having to deal with dangerous vapour releases and fuel spillages.
Best practice in line with EN: 13616 ‘overfill prevention
devices for static tanks for liquid petroleum’ recommends
that overfill prevention systems should be fully testable
and that an annual inspection is performed to confirm
functionality. The design of the Opus is such that it can be
tested in situ without removal and zero vapour release into
the tank chamber. All that is required of the engineer is to
remove the Opus cover and manually lift the float system
to the high level position. This simple action will produce
a visual indicator to the engineer in the tank chamber as
well as an audible and visual indicator at the filling point
through the Midas system.
Electronic overfill prevention tied into an
intelligent control valve at the tanker filling position
Audible and visual alarm when safe working
capacity is being reached
Increased delivery flow rates
Intrinsically safe
Fully testable in situ
Easy to install
Stainless steel construction
All overfill events logged in non-volatile memory
Safe working capacities adjustable to
client specification
Opus is used in conjunction with Midas; now not only does Midas protect from misfuelling but
also from overfilling the fuel storage tanks, eliminating the need for any mechanical overfill
valves within the tank.
Opus is fitted to the top of the tank lid and its probe sensor initiates closure of the Midas inlet
valve once the fuel tank is nearing an overfill.
Electronic Overfill Prevention
Electronic Overfill Prevention
Driver alerted by audible and visual alarm
Fully testable without removal or vapour release into tank chamber
Trigger point to suit customer specification
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