Basic HTML Version
SOP4 – IMAC Instrumentation
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The screen features:
•
Control element buttons for each of the nine Ballast Modes (same as the ‘View Piping’
mode listing on the Piping Screen) When selected, the name of the mode is displayed at
the top of the screen.
•
An “Expected” column displays the correct state of each element for the selected mode.
E.G. ‘open’, ‘closed’, or ‘cracked’ for valves, and ‘on’ or ‘off’ for pumps.
•
An “OK” column which displays either a red dot, if the element is not properly aligned
for that mode, or a green check, if the element is properly aligned.
This screen also displays the standard status block.
5.4.4. Sampling Screen
The Sampling screen includes all details related to test sampling. The following elements are
included:
•
Animated Graphic of both Treatment and Control Tanks, with fields displaying current
tank level and volume of each
•
Fields displaying the current flow rates and pressures at the discharge of each of the two
main ballast pumps.
•
The Ballast Order Telegraph interface
•
Unit Selection switch – Metric or Standard
Sample flow meter controls and display for each of the four (Tank A Fill, Tank A Dump, Tank B
Fill and Tank B Dump) sample flow meters. The sample flow meter controls are configured to
allow users to record the total volume of water sampled into a total of 10 sample nets. A flow
rate field for each flow meter displays the current flow rate measured by each meter. At the start
of an event, all volume total fields are zeroed out. After the initiation of an event, users may start
the totalization of sampled water by pressing the ‘New Net’ button on any of the four flow
meters. Once pressed, the system shall totalize the flow sampled through that meter, and track
the elapsed time. When sampling conditions necessitate switching to a new sample net, the user
presses the ‘New Net’ button as the sample flow is transferred from the first net to the second.
When the ‘New Net’ button is pressed, the system freezes the volume and elapsed time total for
Net 1, and starts totalizing for Net 2. In this way, users may capture sample volume and time for
each of 10 nets.
A ‘Pause’ control button has also been included. This control freezes the volume total of any
one of the four sample flow meters, without starting a new net totalizer. Once the ‘Pause’
control is pressed again, the system continues totalizing the volume for that net.
5.4.5. Pump Screen
As described above, the pump screen includes process display and controls for the two main
ballast pumps as well as for the Mud Proportioning Pump. For each main pump, the following
shall be included:
•
Momentary pushbutton to Start the drive
•
Momentary pushbutton to Stop the drive
•
Momentary pushbutton to Reset drive faults
•
Metric / Standard unit display selector switch