Good evening, experts. What do SJ, ST3, VTSO, MIN, and NOTE in the screenshot mean? This is a DCS diagram...
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Good evening, experts. What do SJ, ST3, VTSO, MIN, and NOTE in the screenshot mean? Is this a DCS diagram? How should we understand the principle behind this screenshot? The several large-diameter butterfly valves I have here are all of the FL type, equipped with a solenoid valve. The requirements are as follows: 1. The on-site control column should allow for manual operation of the valves to fully open and close. 2. Remotely control the opening and closing of valves on the DCS system. 3. During interlocking, the valve remains stationary. Thank you!
SJ and ST3 should be the material grades for the pipeline; it is necessary to consult the grade index table or the legend annotations. “Note” refers to the remarks, and one should check point 14 in those remarks. VTSO – I don’t know what it is; ‘min’ represents the minimum value, and the screenshot doesn’t show everything clearly. . I don’t know what it refers to
VTSO and MIN work together to ensure that the valve is shut off urgently under certain operating conditions.
So what does ZSL mean? ?
It’s best to check the project’s abbreviations and legend files
1. Currently, the valves are operated to be fully open or fully closed, and they are equipped with handwheel operating mechanisms； 2. Remote control of valves on the DCS system, using electric or pneumatic valves ； 3. During interlock, the valve remains stationary; it is a pneumatically double-acting type