Is it necessary to standardize the explosion protection rating of all instrumentation and equipment in the chemical engineering design process?
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Is it necessary to standardize the explosion protection rating of all instrumentation and equipment in the same area during the chemical engineering design process? Should it be based on the highest value within the region?
An explosive hazard area is just what it is – how can there be a highest or lowest level?
It doesn’t have to be uniform; as long as the corresponding explosion protection rating is met, that’s sufficient.
It is not necessary to be uniform, but the explosion protection requirements for the corresponding explosion-proof areas must be met.
It is determined according to the classification of explosion-proof areas, and it should be consistent within the same zone.
As long as it meets the grade requirements, there’s no need for uniformity; sometimes it’s necessary to take into account factors such as ease of procurement and the reuse of existing equipment. For example, with combustible gas detectors, all of them are CT6 – why design one that is BT4? You can’t buy it
As long as it meets the explosion-proof rating required for its area is sufficient; the higher the explosion-proof rating, the higher the price
In areas where there is a risk of explosion, it is necessary to meet the explosion-proof requirements specific to those areas; ordinary electrical equipment can be used in other places
Additionally, the same area you mentioned may not all be within the explosion hazard zone
Within the same area, all devices must have the same explosion protection rating; be aware that this poses safety risks, and it is also difficult to pass the safety inspections.