I have been a fire alarm engineer for quite a few years now and am amazed at the variation in background and varying practical and technical ability and knowledge....and sometimes the lack of the aforementioned i have witnessed.
I have known some very good engineers who were time serviced,started as apprentices and learned on the job.Then i have met electricians..some who took to it like a duck to water and others who i sincerely wonder how they ever became electricians let alone so called fire alarm engineers.
What i am very surprised about is the fact that some people who are now fire alarm engineers have got into the industry with absolutely no electrical or electronic background or qualifications at all and they dont even know how an optical detector works and if you asked them how to read a resistor or explain how a diode works would not have a clue !
I firmly believe that ALL fire alarm engineers should have to have a set of minimum qualifications, core subjects and then have add ons, specialist subjects such as gas extinguishing systems, aspirating systems,beam detection etc
The core basics should be things like... Health and Safety,electronic servicing or electricians qualifications,basic maths and english.then you should have an exam to test your knowledge of conventional and addressable systems.