Tango-Tiger

I work at a school as a IT support worker and i have to go around all day under desks and in the office fixing, cleaning, replacing and installing both desktop and laptop computers. all i wear is formal shoes, trousers a shirt and tie, i also have long hair and have to put up / take down computers mounted from floor, wall and ceiling, without asking my boss and looking stupid, what safety equipment might be worth investing in? dangers if banging my head, breathing in cleaning chemmicals etc any help? i have looked at places like www.safetyshop.com and seems there maybe more to it, bending down and scraping knees on old capet etc hurts along with whatever things have fallen / been on peoples shoes.

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personal fall arrest system