Type Designation CNS : A compressed natural gas-powered unit that, in addition to meeting the requirements for Type CN units, is provided with additional safeguards to the exhaust, fuel, and electric systems
NFPA 505 Fire Safety Standard for Powered Industrial Trucks Including Type Designations, Areas of Use, Conversions, Maintenance, and Operations, 2002 ed. (Std: Fr Sfty for Powered Ind Trucks Incl Type Designations, Areas of Use, Covr, Maint and Opr - Amer) {328 NFC}