<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_7b6ee01f-be50-40ed-93bd-45af106cb30c" outputclass="ncc-clause"><meta><facet building="Class 1a"/><facet building="Class 1b"/><facet building="Class 10a"/><facet building="Class 10b"/><facet building="Class 10c"/></meta><sptc>S31C18</sptc><title id="_090a1089-6dc1-4b0e-9f5e-c6e489b370bc">Alarm systems</title><archive-num>2019: Spec G3.8: 4.4</archive-num><subclause id="_3981d768-571f-4dde-9843-c7759bd7ed8f" outputclass="subclause"><title id="_ee6f9123-ee16-4add-8f33-1d442929e023">SubClause</title><num>1</num><p>A break-glass fire alarm point must be provided at each door to a <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1285_2.1.0.xml#_c71e675e-d6e1-4612-8e59-381a56e224a8" id="_4d7de0d4-7d2f-4265-907b-5838e5f19dc6" scope="local" type="abcb-glossentry">fire-isolated stairway</xref>, <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1284_2.0.0.xml#_cfa6cc89-aa6c-4eaf-90e6-8aabe04b9c76" id="_4854ab74-6929-4815-a1f8-73f77bac446d" scope="local" type="abcb-glossentry">fire-isolated ramp</xref> or <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1283_2.0.0.xml#_2f0af1de-a7c1-44b9-a8b5-1faaedfdb023" id="_9cca4c65-2869-4e1f-a0d2-aa358bc72e1c" scope="local" type="abcb-glossentry">fire-isolated passageway</xref>.</p></subclause><subclause id="_00645b7e-108f-4290-8c25-5592fd740f26" outputclass="subclause"><title id="_122e522e-90a5-4f7a-a528-fcf5e7883261">SubClause</title><num>2</num><p>A staged alarm must be provided where an air sampling type smoke detection system is provided for the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1197_1.0.0.xml#_d0042ee6-21cd-4d8c-8873-d8bfb694ceff" id="_942037a2-cc9d-4c41-82d0-d1d6b33e5e9b" scope="local" type="abcb-glossentry">atrium</xref>, and must operate as follows:</p><ol outputclass="alpha"><li id="_47b5d7cc-a500-460e-a389-7fed498f55fa">Alert building management when abnormal smoke levels of 0.03% obscuration per metre are detected.</li><li id="_6660adee-8682-4d42-9d37-0e53bd87e53f">Initiate a second alarm to management and start all smoke control systems including pressurisation of escape routes when smoke levels of 0.07% obscuration per metre are detected.</li><li id="_376dc26a-564c-41bd-9a17-2b22abfc8d17">Automatically call the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1275_0.4.0.xml#_cc69b717-0915-4071-87d9-176353f8cc9a" id="_0d3633f9-f66f-4d4b-8f82-271fdef2c8d5" scope="local" type="abcb-glossentry">fire brigade</xref>, activate the emergency warning and intercom system, and de-activate all plant not necessary for fire safety within the building when smoke levels of 0.09% obscuration per metre are detected.</li></ol></subclause><subclause id="_bddb4028-8a23-409e-a6c3-1ab19f8bd3a3" outputclass="subclause"><title id="_3a895c36-964a-4fbf-97c4-eb7c43fb7e2f">SubClause</title><num>3</num><p>Beam and point type smoke detectors <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_2aba53e6-b0c8-4754-8be4-e9163b70a078" scope="local" type="abcb-glossentry">required</xref> must simultaneously operate all functions referred to above and activate at the level set out in AS 1670.1.</p></subclause></clause>