“Soot blowing” means the activation of mechanical devices for on-line cleaning of gas-side soot, boiler ash, and slag deposits to provide for optimum heat transfer and safe operation of a boiler.

Source. #6505-A, eff 5-1-97; renumbered by #8256 (from Env-A 101.253), (see Revision Note #1 at chapter heading); renumbered by #8304 (see Revision Note #2 at chapter heading); renumbered by #9839 (from Env-A 101.174), (see Revision Note #3 at chapter heading); ss by #13105, eff 9-25-20 (formerly Env-A 101.176) (see Revision Note #4 at chapter heading for Env-A 100)