I am struggling to understand the requirements of being a register master electrician.

I am a qualified electrician For 8 years. Where I am working we have an open furnace where we are exposed to explossions, hot dust, gases, also poisonous dust.

As the want a letter from a company about 5 years working in a hazardous places is our plant 1 of the places?

Please help me. I did unit standard for 1 & also 3 phase wireman licence but have not done paper1&2 theory. With N5.

Please help me I am interested in being a master electrician.