<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_9fa06cea-b354-4933-9ce3-6608bd4d0a82" outputclass="ncc-clause"><sptc>C2V1</sptc><title id="_c9795c67-5cb7-4b8e-b683-7afeb8990823">Velocity and liquid-to-air ratio</title><archive-num>2019: CV2.1</archive-num><subclause id="_574ec930-dba5-4027-8d9c-8c1e3daccdfc" outputclass="subclause"><title id="_ea0a33ca-2726-4012-a78a-116886e7cacd">SubClause</title><num>1</num><p>Compliance with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1809_1.13.0.xml#_a9276574-bc8f-4f07-ab54-191fdff44181" id="_54ce3cec-1b8b-4773-beb5-6072014fca86" referencetype="Text" scope="local" synctargettext="false" type="ncc-clause">C2P1</xref> is achieved if the sanitary <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_7dda8bfb-19fb-4997-99fa-f29988b4b09c" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> system is designed to operate with—</p><ol outputclass="alpha"><li id="_bfee8fe2-46e8-43b4-a9cc-6850d6201d5b">a liquid-to-air ratio of between 1 to 1 and 0.65 to 0.35; and</li><li id="_e5f867c9-667e-4af7-8db9-ab6af2e17cfe">a minimum velocity of 0.8 m/s; and</li><li id="_e6fea870-58d6-4056-aa93-ade4d0faedac">a maximum velocity of—<ol><li>2 m/s under normal operating conditions; and</li><li>3.5 m/s under surge conditions.</li></ol></li></ol></subclause><callout id="_1ca317c8-25fb-4ffa-93f9-99a1a6bdb9db"><callout-type ncc-info-type="info"/><ul outputclass="numbered"><li>The purpose of the minimum velocity is to minimise the likelihood of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1209_1.2.0.xml#_417d94d8-f254-4788-9a14-c4c5da89daa6" id="_a9dcf808-3dc5-47dc-96f1-0be8950618d3" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">blockage</xref> in the sanitary <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_cab3f8e1-55b4-488b-985f-263a70dc3358" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> system.</li><li>The maximum velocity is intended to minimise the likelihood of damage to the system.</li></ul></callout></clause>