From ladders to tools we can say they have no own source of ignitions.
Anyway their usage in potential hazardous environment shall be documented that while using there is no potential hazard of ingition.
Keep up good work!
Arpad
Preliminary observations Technological knowledge, which can change rapidly, must be taken into
Oil and natural gas literally keeps mankind moving; for quite some time,
How shall we check the compliance of a used installation in case
Each and every industry has its Ex hazardous relevance – storage, handling
arpadveress 
