passive alarm and active alarm
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This post was last edited by niuky on 2010-5-18 at 17:48. A number of instruments in the plant are equipped with passive alarms to warn the operators in the control room of abnormal conditions that could lead to dangerous situations or cause damage to the equipment or catalysts. Critical parameters such as flow rates, pressures, and temperatures are monitored by active alarms that are connected to the safety interlock trip system. Some of these passive alarms serve as pre-alarms for the active alarms. This is mentioned in the plant’s emergency shutdown procedure; however, I’m not sure how to translate “passive alarm” and “active alarm” precisely. I’d appreciate it if someone could provide a detailed explanation Thank you all in advance!
For your information, \"passive alarm\" and \"active alarm\" can be used for translation. A passive alarm sends an alert signal to the control center; for example, when a certain instrument is not functioning properly, but no action is taken automatically – it is the operator who receives the alert signal who carries out the necessary action. An active alarm allows for immediate action through interlock devices. This is a non-professional explanation for reference only
Passive alarms: Active alarms: Passive alarms. To use a personal analogy, in the case of a fuel boiler with a designed pressure of 1.5 Mpa and an upper operating pressure limit of 1.2 Mpa, when the pressure rises to 1.4 Mpa due to overload, the boiler must be shut down and an alarm is sent to the operators at the control center – this is what constitutes passive alarms. If the fire intensity causes the pressure to exceed the upper limit of 1.2 Mpa, such as 1.22 Mpa, the system records an error and switches to low intensity; this is when active alarms are triggered.
Those who spoke upstairs explained it quite clearly; it’s exactly that meaning. As we all know, translating it still presents some difficulties. This is the content of the gauge. Active alarms refer to alarms that trigger certain actions; once such an alarm occurs, other corresponding safety measures are initiated, such as closing or opening valves. The difference between passive alarms and the ones mentioned above is that when such an alarm occurs, it does not trigger any corresponding actions. Just giving you a heads up. As the original poster mentioned, many passive alarms serve as pre-alarms for active alarms. Simply put, for parameters such as liquid level/pressure/temperature, there are normal alerts, high alerts, and extremely high alerts; a normal alert is of a passive nature, while an extremely high alert may require an active response. Finally, it seems completely unnecessary to force a translation into specific numbers like 3, 6, and 9, as long as one understands what it means. However, the original poster might want a more professional translation. In fact, sometimes it’s sufficient to simply use the terms \"passive alarm\" and \"active alarm\" – these terms were originally introduced by foreigners.