You must make sure the heating system used in a drying operation that could cause ignition:

1. (1) Has adequate mechanical ventilation that operates before and during the drying operation;
2. (2) Shuts down automatically if a ventilating fan fails to maintain adequate ventilation;

3. (3) Is installed as required by NFPA 86-1999, Standard for Ovens and Furnaces.

   Note:

   Some, or all, of the consensus standards (such as ANSI and NFPA) may have been revised. If you comply with a later version of a consensus standard, you will be considered to have complied with any previous version of the same consensus standard.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 17-18-075, § 296-835-12060, filed 9/5/17, effective 10/6/17. Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. WSR 02-15-102, § 296-835-12060, filed 7/17/02, effective 10/1/02.]