Is it permissible to install the combustible and toxic gas detection system cabinet in the non-explosion-proof area of a Class A workshop?
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We have a new device that falls under the category of fine chemicals, but its overall layout is designed in accordance with petrochemical standards. We plan to place the cabinets for flammable and toxic systems on-site, with communications connecting them to the control room, thereby saving costs related to cables and other components. I would like to ask if this approach is feasible, and whether there are any relevant standards that support it. Many fire alarm systems have such a specification; I couldn’t find it. Please provide technical support
It seems that in fire protection electrical design, there’s a section regarding fire alarm design which mentions that cabinets should be placed on-site. Is there anyone in the group who works with instruments and also deals with electrical aspects? They should know about this
That’s the module box in the fire alarm system, right?
The alarm controller shall be installed in a building such as an instrument control room or central control room where personnel are regularly present; it is strictly prohibited to install it in explosion-proof areas. The enforcement of current rules is stricter than the rules themselves
There are no specific provisions for 50493; you may refer to the provisions in 50160, namely sections 5.2.7, 5.2.16, 5.2.17, and 5.2.18 of the Petrochemical Regulations
No, the design institute referred to cabinets. I asked which specification applied, and they said it was provided by the electrical department. That makes sense; I’ll consult with the electrical designers later
Logically, it shouldn’t be allowed. However, the automation department at the design institute said it’s acceptable; I just couldn’t find this specification anywhere
5.2.16 The control rooms, cabinet rooms, substations, laboratories, offices, etc., of the installation shall not be located in the same building as rooms containing Class A or Class B-A equipment. When the control room of the installation is built together with other buildings, an independent fire compartment should be provided. 5.2.18 The layout of control rooms, cabinet rooms, substations, laboratories, offices, etc., located within the installation shall comply with the following provisions. Article 16 states that control rooms cannot be placed in the installation, while Article 18 outlines precautions regarding the placement of control rooms within the installation. So, is it permissible to have a control room in the installation or not? Isn’t this contradictory? Please provide an explanation. Thank you
Installation on-site complies with instrument design specifications, but it should be done in a non-explosion-proof area.
It’s best to have clear regulations as support in order to be convincing. According to the fire prevention regulations for fine chemicals, there’s no problem; however, it remains unclear whether there are corresponding provisions in the petrochemical regulations
5.2.16 emphasizes that rooms equipped with Class A and Class B-A equipment must not be located in the same building; in other words, there must be no Class A or Class B-A equipment within such a building.