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1.1 Scope. 1.1.1* General. This standard shall establish minimum requirements for protection against fire and explosion hazards in wastewater treatment plants and associated collection systems, including the hazard classification of specific areas and processes. A.1.1.1 Other NFPA standards should be consulted for additional requirements relating to wastewater treatment and collection facilities. 1.1.2 This standard shall apply to the following: (1) Collection sewers (2) Trunk sewers (3) Intercepting sewers (4) Combined sewers (5) Storm sewers (6) Pumping stations (7) Wastewater treatment plants (8) Sludge-handling facilities (9) Chemical-handling facilities (10) Treatment facilities (11) Ancillary structures (see 18.104.22.168) 1.1.3 This standard shall not apply to the following: (1) Collection, treatment, or disposal of industrial wastes or manufactured by-products that are treated on-site and not discharged to a publicly or privately operated municipal facility (2) On-site treatment systems (see 22.214.171.124) (3) Pressure sewer systems (see 126.96.36.199) (4) Building drain systems and appurtenances (see 3.3.5) (5) Industrial sewer systems and appurtenances (see 188.8.131.52) (6) Personnel safety from toxic and hazardous materials or products of combustion (7) Separate nonprocess-related structures (see 184.108.40.206)
This standard provides requirements for protection against fire and explosion hazards specific to wastewater treatment facilities and their associated collection systems.
NFPA 820 provides requirements for ventilation, construction materials and electrical equipment, as well as fire protection measures and administrative controls designed to protect wastewater treatment facilities and associated collection systems against fire and explosion hazards. Electrical classifications for a particular area vary depending on the ventilation rates. Requirements are provided in table format by specific location in the treatment process.
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