2013 Avoiding Defects Book

Page 182

• Agree device labelling format early. • Check all devices are labeled clearly and correctly. • Ensure detection is identified within lift voids and risers. • Ensure a detector is located within 1m from any lift opening. • Confirm if the system is to be open protocol early and ensure that the the terms of the open protocol are defined. Do not merely cite industry standards because these differ in interpretation. • Ensure all mimic panels, smoke damper panels etc are supplied via fire rated cabling from local distribution boards. • Ensure voids that do not require coverage are identified early and have agreement of the fire officer • Understand the vulnerability of building occupants to sound levels of the fire alarm sounders, NHS HTM’s have clauses for vulnerable people. • Ensure the system operation is well understood by the client. • Where panels are reset ensure that for 2 knock systems the search durations are clearly stated and agreed with the fire officer. • Ensure that the fire alarm detectors are correctly labeled and zoned. • Understand the type of cabling required, MICC is still referenced in specifications but can generally be replaced with fire rated equivalent. • Understand the difference between Standard Fire Resisting Cables (Meets PH30 Classification, withstand 830°C for 30 Mins) and Enhanced Fire Resisting Cables.(Meets PH120 Classification, withstand 930°C for 2 hours) • Understand the Categories, (Protection of Property)

L

(Protection

of

Life)

&

P

o L1 – System installed throughout all areas of the building. o L2 - System installed only in defined parts of the building. o L3- 5 – Systems do exist but very rarely used. o P1 - System installed throughout all areas of the building. o P2 - System installed only in defined parts of the building.

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Avoiding Defects - Revision D – July 2013


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