WAC 296-24-31003. Piped systems

(1) You must comply with Chapter 9 (Acetylene Piping) of NFPA 51A-2006 (Standard for Acetylene Charging Plants) (National Fire Protection Association, 2006 ed., 2006). (2) When employers can demonstrate that the facilities, equipment, structures, or installations used to generate acetylene or to charge (fill) acetylene cylinders were installed prior to February 16, 2006, these employers may comply with the provisions of Chapter 7 (Acetylene Piping) of NFPA 51A-2001 (Standard for Acetylene Charging Plants) (National Fire Protection Association, 2001 ed., 2001). (3) The provisions of subsection (2) of this section also apply when the facilities, equipment, structures, or installations used to generate acetylene or to charge (fill) acetylene cylinders were approved for construction or installation prior to February 16, 2006, but constructed and installed on or after that date. Note: For additional information on acetylene piping systems, see CGA G-1.2-2006, Part 3 (Acetylene Piping) (Compressed Gas Association, Inc., 3rd ed., 2006).