Discussion on device interlocking
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I have been in contact with several sets of hydrocracking units and found that the safety interlocks of the units are different. Do you have any hydrogenation equipment? Let me talk about your own unit. How are the interlocks designed? It's best to explain why
Design principles of interlocking systems: 1 Concept (evaluation) 2 General scope definition (evaluation) 3 Hazard and risk analysis (selection) 4 General safety requirements (selection) 5 Safety requirements of relevant safety systems (detailed description) 6 Operation and maintenance plan (detailed description) 7 Test plan (detailed description) 8 Installation and commissioning plan (execution) 9 System implementation (execution) 10 Installation 11 Overall safety confirmation 12 Operation and maintenance 13 Release
The question you asked is too broad. Each designer's ideas and owner's requirements are different, which will lead to differences in the interlocking system. You can only discuss the design advantages or uniqueness of a specific interlocking system!!!
For example, the starting conditions and execution actions of emergency pressure relief interlock
A security system is not a system built on the head. A series of cross-professional evaluations and analyzes are required based on the process to select a control plan. See the 2nd floor for the process.
The scope of your question is too broad. The interlocking here is used on the unit. I don’t know if what you want to ask is the unit interlocking!
1. For hydrocracking, reactor overtemperature is the most fatal, and the most useful way to avoid overtemperature is to maintain gas circulation in the reactor. Therefore, for hydrogenation, the continuous supply of circulating hydrogen is crucial. 2. However, if the circulating hydrogen compressor is stopped, the temperature of the reactor will rise sharply. 3. UOP has designed an interlocking pressure relief method to avoid over-temperature when the circulating hydrogen compressor stops. 4. Do you agree with the above interlocking settings? Have you seen other settings?
Due to the different production capacity and load of the device, the manufacturer of the equipment, and the designers, the interlocking issues will of course be different.