Are there any guidelines for setting the alarm values for pump outlet pressure and pipeline pressure?
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Hello everyone. As the title suggests, I’m wondering if there are any standards or guidelines regarding the setting of alarm values for pump outlet pressure and pipeline pressure. Should these alarm values be determined based on the operating pressure of the pump or pipeline, or rather based on the pump’s rated pressure? Thank you!
The so-called pipelines, pumps, and other individual equipment and facilities are all part of the chemical production unit. It is part of the production system. These parts all provide service conditions for theme production equipment. All these choices and the determination of process conditions must meet the production requirements of the main equipment. For example, the appropriate type of pipe should be selected; otherwise, the required usage conditions cannot be met, or material waste will occur. The same applies to the selection of pumps. For reference.
Whether to install pressure alarms at the pump outlet and in the pipelines should be determined based on the process design; as you said, it should be set according to the operating pressure of the pump or pipelines. As for whether there are any regulations, it seems that no such standards exist, after all, the process parameters represent the requirements specific to a particular manufacturing process. However, there are regulations in place, mainly in the form of departmental rules and other regulatory documents; for example, in recent years there have been requirements that systems falling under the category of “two key areas and one major aspect” must be automated, equipped with alarm interlocks, and have independent safety instrument systems
Thank you all for sharing your insights. I’m wondering if there are any guiding principles regarding how to set the pressure alarm values – whether they should be set as a multiple of the operating pressure, the rated pressure, or the design pressure. At present, many companies do not have a uniform standard for setting these alarm values; some set them at 1.1 times the operating pressure, while others set them at 0.8 times the rated pressure. Is there any regulation that standardizes this aspect?
Pipelines generally do not have pressure alarms; the design parameters of the pipelines serve as the basis for selection by the project owner； The pump outlet pressure alarm value is set in accordance with the process control requirements; the rated pressure of the pump is certainly not lower than the process requirements, and it is also certainly not higher than the operating pressure of the pipelines
My approach: 1.1 times the normal working pressure + pressure before the pump