1. อุปกรณ์ไฟฟ้า2. การสูบบุหรี่หรือก

1. electrical equipment2. the smoke or fire3. review of the friction of the engine machinery.4. heating5. the surface of hot objects such as steel is burning. The steam pipe.6. the furnace which does not have a lid or a flame without cover.7. welding and cutting metals.8. the burning by itself is caused by the accumulation of some like them dry waste. Coal will cause heat-up in themselves until the next power point.

1. Electrical
2. Smoking or igniting
third. The friction of the engine assembly of
four. Heating
5. Objects with hot surfaces, such as metal pipes burned
6. kiln flame which no cover or no cover
7. Welding and Cutting
8. The flames on their own due to the accumulation of substances such as waste coal drying will cause heat to build up in and of itself. Until Ignition

1. Electrical
2. Smoking or lighting, 3
. Friction of composite engine
4. Heater
5. Objects with a hot surface, such as steel burning steam pipe
6.The kiln which no flame, no lid or cover 7.

8 metal welding and cutting.Burns himself caused by accumulation of some species, such as the garbage, coal will ก่อให้เกิดความร้อน up on its own until a fire point
.