Questions regarding the ESD system
Thread Content
Recently, the safety supervision agency inspected the company and said that there was no ESD system, requiring one to be installed. I would like to ask whether designing an ESD system requires a design institute to carry out the design, or can the company itself define the requirements based on the process conditions, develop the interlock logic, and then submit it to the manufacturer.
You can put forward your own requirements based on the company’s processing conditions and ask the manufacturer to carry it out.
So, will the work safety supervision agency ask during the inspection whether there was a design firm involved in the design and whether it meets the requirements?
It shouldn’t be necessary; if it’s clear, one can simply submit a request for interlocking and have the manufacturer handle it.
It’s better to let the design institute take the lead. Since the safety supervision agency has classified it as a major hazard source, a SIS is necessary; this way, in the event of any accidents in the future, the responsibility can be shifted to the design institute. Many SIS systems these days are essentially ineffective – even if the system level is sufficient, the on-site instruments aren’t up to par, so such systems are of little use!
Yes, many of the instruments used on site currently fall far short of the requirements set by SIS. If SIS-compliant instruments were to be used for everything, the cost would be extremely high
It should not be necessary; if it’s clear, one can simply submit a request for interlocking and have the manufacturer handle it
Based on the process, establish sequential conditions and find a manufacturer to carry out the work. During a routine inspection, they don’t look at the design or anything similar; it’s mainly to check whether you have this item or not
Just determine the process conditions internally and find someone to carry out the work; it’s best to have a relevant certificate issued by a design institute. We’ve just completed the acceptance process here, and generally, when they come for inspections, as long as you have an ESD system in place that meets certain requirements, that’s sufficient. Because sometimes the people who come are quite professional, it’s not possible to get away with shoddy work; it must meet the technical requirements.
Generally, it is required that the design institute prepare the drawings, as well as the list of IO measurement points and the logic diagram. Unless you are already very familiar with this logic and can find the IO points in DCS on your own