Cargo smoke detectors inop.
I found an inoperative cargo smoke detector today (ATR, aft cargo compt). It was deferred, but the MEL says "no combustible cargo allowed". I had a dispute with our dispachers, as I claimed "combustible" is anything that may burn (therefore normal passenger luggage is combustible and eg. water isn't) and the dispach claimed "combustible" is something that burns easily - i.e. it's o.k to get normal luggage, but I couldn't load any flammable DGR goods into the compatrment. I know it's a bit of a language problem, as English isn't my mother tongue. However, I felt I was right and was reclutant to accept the dispatch definition. What would you do? Go with it or leave the baggage? What do MELs of other a/c say about cargo smk det. systems? Are there any rules on when cargo smk system is required?