Testing / Inspection of Fire Dampers on Bin Chutes

[Rob64]

Can anyone signpost me to the relevant guidance / regulations on inspection and / or drop testing of fusible fire dampers on bin chutes. I understand it is somewhere within BS:9999 (2017) but I’ve trawled through it without success. 
 

Thanks  

[AnthonyB]

Annex I I.7 (e) would seem appropriate (annual) - they operate similarly to mid duct shutters

[Rob64]

Many thanks Anthony. I’ll check it out.