Or. Admin. R. 437-002-0286 – Flammable Preservative Coatings

(1) A competent person must test any preservative coating whose flammability is not known before welding, cutting or other hot work is started.
(2) Highly flammable coatings (those coatings whose surface scrapings ignite when heat is applied) must be stripped from the area to be heated to prevent ignition.

ORS 654.025(2), 654.035 & 656.726(4)

ORS 654.001 through 654.295