Alarm in the hydrofluoric acid production plant building
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Is the flange considered a leakage point? So the entire equipment building needs to be filled with sensors – how should they be arranged?
It is best to have the designs prepared by a design institute that specializes in paper-based designs; one can also refer to the relevant regulations. According to clause 4.1.2, when the sources of flammable gases are located in outdoor or semi-outdoor equipment areas, if the detection points are situated on the upwind side of the direction from which the gases are most likely to come, the distance between the flammable gas detection points and these sources should not exceed 15 meters, while the distance between toxic gas detection points and these sources should not exceed 2 meters. If the detection points are located on the downwind side of that direction, the distance between flammable gas detection points and the sources should not exceed 5 meters, and the distance between toxic gas detection points and the sources should be less than 1 meter. Clause 4.1.3 states that when the sources of flammable gases are located in enclosed or semi-enclosed buildings, a detector can be installed every 15 meters, with the distance from each detector to any given source not exceeding 7.5 meters. The distance between toxic gas detectors and their sources should not exceed 1 meter. Clause 4.1.4 specifies that when equipment belonging to different fire hazard categories is installed in enclosed or semi-enclosed buildings, detectors should be installed within a range of 7.5 meters around the sources of flammable gases as specified in clause 4.1.1. According to clause 4.1.5, when sources of flammable gases that are lighter than air are located in enclosed or semi-enclosed buildings, detectors should be installed above those sources, as well as at the highest points in the building where flammable gases may accumulate.
It’s about designing and creating drawings; these specifications seem to be ambiguous, stating things that are both possible and not possible to do. And companies don’t want to go through too much hassle! Should this output be generated or not? The company also did not violate any regulations.
According to the recommendation standards, one can ignore it if it is marked as “suitable”, but must respond if it is marked as “required”.
Currently, in many places, the work safety supervision agencies and third-party testing institutions treat the terms “recommended” and “required” as mandatory requirements, taking Shandong as an example. You need to decide based on the situation of the local safety supervision agency; it’s better to have more rather than less, considering the current safety situation.
This can be discussed with the design institute to further reduce it