Answer to Question #43746 in Engineering for Zeph

Question #43746
1. You are asked to give advice on reduction of false alarm in a large open plan process area in a factory (large machinery 10m high running along whole length of area). On investigation you find many false alarms occur at the end of every shift, when process generates dust and steam during equipment cleaning.
i) what type of fire detection will be presenting these problems. What is its probable purpose and why was it chosen?
ii) suggest three measures that might be taken only in respect of fire detection system to reduce false alarms
iii) for each measure discuss disadvantage that may be associated with the measure and any consequent qualification, limitation with special reference to Filtering measure in BS 5839-1
iv) what alternative approach not using convectional fire detectors but still forming part of the detection system might suit this building. See commentary of detection in BS 5839-1
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