Apart from maybe not being able to diagnose noise related faults as well as others, I personally dont see what the problem is with a deaf person with a hearing aid working on gas.
Ive worked with many older people on sites in the past who were very hard of hearing and they managed just fine. Ok as stated, a falling object may be a hazard but that can be avoided with good housekeeping practice on site.
Just remember to do the flame failure tests by manually relighting also, feeling the pump vibrations would indicate if faulty also.
Its entirely your choice but I wouldn't pass on the opportunity to learn the gas side of things if your company are paying for the training costs.
If you do have problems fault finding due to it, you can always just do servicing.
Good luck with whatever you do anyway
Ive worked with many older people on sites in the past who were very hard of hearing and they managed just fine. Ok as stated, a falling object may be a hazard but that can be avoided with good housekeeping practice on site.
Just remember to do the flame failure tests by manually relighting also, feeling the pump vibrations would indicate if faulty also.
Its entirely your choice but I wouldn't pass on the opportunity to learn the gas side of things if your company are paying for the training costs.
If you do have problems fault finding due to it, you can always just do servicing.
Good luck with whatever you do anyway