Issues with alarm settings
Thread Content
There is a wax oil storage tank; under normal operating conditions, the storage temperature ranges from 30 to 65°C, and there are alarms to indicate when the temperature is too high or too low. However, after the oil in the tank is used up and the level at the bottom of the tank drops to 0.5 meters, it usually takes three to four days before more oil can be poured in. During this period, the temperature of the tank is not controlled, which results in continuous low-temperature alarms. And this is meaningless. In a situation like this, how do you manage such alerts?
To ensure temperature control, it is first necessary to guarantee the validity of the temperature measurement points, which means ensuring an adequate minimum liquid level
It can be measured using a slant-inserted multi-point thermometer； Ensure that temperature can be detected at a point even at the lowest normal liquid level ； DCS controls using the actual temperature ； The remaining temperature points are for reference only! Thank you!
It is recommended to make a change to temporarily disable the alarm, and restore it once there is again fuel available.
There are two scenarios here: if production is carried out under normal conditions with temperature control, it is necessary to strictly adhere to the temperature control specifications. If the storage tank is taken out of use, then it’s a different matter, and relevant changes will be made. If the existing temperature control parameters keep triggering alarms, it indicates that there is a problem with these parameters, and they need to be re-evaluated and reset. In principle, the temperature control parameters must meet the operating conditions for normal production.