Do you know anything about bridge fire protection?

I don’t know about this, but after searching, it said something like this: When there are requirements for corrosive liquids, flammable dust and other environmental influences, (FB) type trough type composite anti-corrosion shielded cable tray should be selected ； In highly corrosive environments, type (F) composite epoxy resin anti-corrosion and flame-retardant cable trays should be used. The fireproof section of the bridge must be made of steel or non-combustible or flame-retardant materials.

Pipe racks with flammable media pipes need to be painted with fire retardant paint

This post was last edited by Zhi GE on 2021-10-2 14:47 1. According to relevant specifications, flammable liquids and gases, toxic gases, highly toxic liquids, and liquefied gas storage tanks in the storage, transportation and installation areas of primary or secondary major hazard sources need to be equipped with independent safety instrument systems (SIS) to automatically detect, remotely transmit, and alarm major parameters such as temperature, pressure, and liquid level.； And set up ultra-high limit alarms such as liquid level and pressure, automatic interlocking to cut off the feed, ultra-low limit alarms, automatic pump stopping and interlocking to cut off the discharging facilities. And realize emergency cut-off function. 1. According to * * Requirements of Order No. 40 and Order No. 79 of the State Administration of Work Safety: Article 13 Hazardous chemicals units shall establish and improve a safety monitoring and control system and improve control measures in accordance with the following requirements based on the types, quantities, production and use processes (methods) of hazardous chemicals that constitute major hazard sources or the actual conditions of relevant equipment and facilities.: (3) Set up emergency cut-off devices for key facilities such as toxic gases, highly toxic liquids and flammable gases in major hazard sources ； For facilities with toxic gases, emergency disposal devices for leaks must be installed. Level 1 or level 2 major hazard sources involving toxic gases, liquefied gases, and highly toxic liquids are equipped with independent safety instrumented systems (SIS) ； 2. According to * * Standards for determining hidden dangers of 40 major production safety accidents issued by the State Administration of Work Safety: Article 5: Hazardous chemical tank farms that constitute primary and secondary major hazard sources do not implement emergency cut-off functions. ； Hazardous chemical tank areas involving primary and secondary major hazard sources of toxic gases, liquefied gases, and highly toxic liquids are not equipped with independent safety instrument systems. 3. According to the notice of Jiangsu Provincial Work Safety Supervision Bureau on carrying out special actions for intrinsic safety diagnosis and management of key chemical (hazardous chemicals) enterprises, Su Anjian [2018] No. 87, the raw material handling requirements for full-process automated control system management: Involving flammable liquid storage tanks, toxic liquid storage tanks, low-temperature storage tanks and pressure tanks, main parameters such as temperature, pressure and liquid level should be automatically detected, remotely transmitted and alarmed, and ultra-high limit alarms such as liquid level and pressure should be set up, as well as automatic interlocking to cut off the feed, ultra-low limit alarm and automatic pump stop and interlocking to cut off the discharging facilities. 2. Emergency shut-off valves have fire protection requirements. SH/T3005-2016 requires the installation of a fire protection cover to meet the requirements of UL1709 fire resistance (1093°C) time of not less than 30 minutes. API553 requires that in addition to the fire protection of the valve and actuator, fire-resistant cables, gas source pipelines, cable tray fire-proof packages, etc. must be used for emergency shut-off valves (D-type EBV) that need to operate under accident conditions to meet the overall fire protection design requirements. 3. Specific fire protection requirements for bridges. See QBT 1453-2003 Cable Tray. At present, with the understanding of technology and safety, safety management agencies, design institutes, and enterprises are paying more and more attention to the fire protection of SIS, emergency shut-off valves, valves and actuators in tank areas. However, the fire protection requirements for tank area cables and bridges need to be improved, because according to the safety concept of SIS loops, the above are all links in the emergency shut-off loop, and any weak link will reduce the safety level of the entire loop.

The poster is asking about cable trays, not pipe racks.

This is the butadiene spherical tank area, which is a bit inconsistent.

The bridge is made of metal, what should I do with the cables?

Check to see if it is required by Article 5.6 of gb50160

The cable should be ZA or NH, right? :o