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  1. millerbp

    NFPA 54 Applicable?

    That is basically my thoughts. There's no doubt we want as safe a system as possible, but we also don't want to incur unneeded costs. Let me assure you that digester gas is flammable. Also, I spoke with some technical experts at the Plastic Pipe Institute and they indicated that this is a...
  2. millerbp

    NFPA 54 Applicable?

    The reference numbers were for: 1.1.3(2)On-site treatment system (commercial establishment) and 1.1.3(1) Treated waste is not discharged to a publically or privately operated municipal facility. I'm not sure how "small" commercial establishment is defined, but 1.1.3(1) is a definite. The...
  3. millerbp

    NFPA 54 Applicable?

    I believe my treatment system is expempted from 820 under 1.1.3.1 and 1.1.3.2. What spec do landill collection systems use?
  4. millerbp

    NFPA 54 Applicable?

    I have a project in which gas is produced in a large lagoon-type digester (similar to a landfill). The gas piping from the digester is HDPE (below ground) and then stubs above ground. The gas in the pipe is low pressure (sometimes slight vacuum). Does NFPA 54 apply in this situation? If so...
  5. millerbp

    Balancing Multiple Digester Gas Flows

    I'm looking for information regarding methods for balancing biogas flows from multiple anaerobic digesters. The digesters have balloon type covers and develop ~10" wc. A few of the digesters are located further away from the common collection point and will need to have a low pressure blower...

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