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  1. thomasfrotten

    Pump Foundation Code Standard request

    I am in Colorado. I am working to install a petro chemical process in an outdoors area. This process has typical mechanical process cooling equipment for this area. This will involve installing pumps mounted on baseplates and sub plates-these will need to be anchored to a foundation, HVAC...
  2. thomasfrotten

    Determining Group (B vs C&D) for flammable gas in vacuum pump service

    I am specifying a vacuum pump for a process The process is all enclosed, and the flammable is pure, so way above the UEL in the piping. The piping is leak checked to 10-6 cc/s with a He leak detector every cycle. The room has 15 ACH, and calculations show the lel will never be reached even...
  3. thomasfrotten

    Codes that require and govern design of explosion proof rooms

    I am working with a highly flammable gas that is in an enclosed system, normal operation will never have fumes and or vapors. The internal system, will be the pure flammable gas, with no air or oxgen, so it will always be above the UEL. I am using mechanical ventilation to ensure if I have...
  4. thomasfrotten

    Codes that require and govern design of explosion proof rooms

    Where do I find the requirements for an explosion proof room? I am familiar with the NFPA but have not come across what codes governs the design and construction of a bunker type room for the processing of a highly flammable chemical including design of blow out panels and walls. Any help...

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