Historical
ANSI/NSPI 4-1999
Aboveground/Onground Residential Swimming Pools
Describes certain criteria for the design, manufacturing, testing, care and use of aboveground/onground residential (Type-O) non-diving swimming pools and their components. This is the fourth public review for this standard. It was originally listed in the November 11, 1994, July 18,1997, and July 31,1998 issues of Standards Action. The substantive change to the standard appears below in its entriety: 12.3.3 (old) If the equipment is capable of exposing maintenance or service personnel to ozone concentrations exceeding 500 ppm a self-contained breathing apparatus approved for ozone usage shall be provided. If a distinct, pungent odor is smelled when the ozone generating equipment is operating, the equipment shall be shut down and the area shall be ventilated. The equipment shall be inspected and repaired as necessary by qualified service personnel. 12.3.3 (new) If the equipment is capable of exposing maintenance or service personnel to ozone concentrations exceeding 0.3 ppm 1a self-contained breathing apparatus approved for ozone usage shall be provided. If a distinct, pungent odor is smelled when the ozone generating equipment is operating, the equipment shall be shut down and the area shall be ventilated. The equipment shall be inspected and repaired as necessary by qualified service personnel. The Permissible Exposure Limit to ozone, as specified by the U.S. Occupational Safety & Health Administrations (OSHA), is 0.1 ppm, timed-weighted average over an 8 hour day, with Short Term (up to 15 minutes) Exposure Limit of 0.3 ppm. Ref:
APSP: Association of pool and spa professionals [apsp]