Pump start/stop signal
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I would like to ask everyone whether there are any relevant specifications requiring that the pump start/stop signals be connected to the DCS
What is suitable for on-site requirements must be met; everything should be adjusted to meet production needs and the requirements of users. As for the disagreements between Party A and Party B, the best approach is to detail the contract in advance, including specifying the relevant design standards within it. If nothing is indicated, one has to look for evidence afterwards, and what’s left is endless arguing. As for setting up an on/off signal, it’s essential in a DCS – this requirement isn’t excessive; it should be specified in the design drawings. For reference.
Previously, there was remote start/stop for the pump, but now the owner no longer wants it and wants to remove the pump start/stop signals from the DCS. So I was wondering if there are any regulatory requirements.
No, to meet the owner’s requirements, not all processes that are not among the 18 hazardous processes can be modified arbitrarily.
It’s best not to make any modifications to this; instead, the modification methods within its scope should be used as training material. Everything shall be carried out in accordance with the design requirements and contractual agreements; no non-design-related or unreasonable modifications shall be made to avoid potential problems. You say it can’t be changed, and there’s nothing he can do about it. For example, the shaft temperature interlock on some equipment being disabled without authorization, and so on. For reference.