critical level


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Related to critical level: Critical region, critical point, Critical value

critical level

The setting on a backflow preventer or vacuum breaker which determines its minimum permitted elevation above the flood-level rim of the fixture or receptacle served.
References in periodicals archive ?
Summary: Egypt's central bank introduced a new auction system for buying and selling US dollars to help conserve foreign reserves, which it said had reached a critical level.
According to the FDA, treatment was considered successful if methotrexate levels fell below a critical level within 15 minutes and stayed below the critical level for 8 days.
The developments in Syria are on a very critical level, added Davutoglu who held a joint press conference with Iranian Foreign Minister Ali Akbar Salehi in Ankara on Thursday.
In ten of the patients the methotrexate level fell below a critical level within 15 minutes and stayed below the critical level for eight days.
The Ipo dam in northern suburban Bulacan reached the spill level of 100.86 metres (critical level at 100.8 metre).
"Over the Christmas break, salt levels again reached a critical level and additional material was purchased from sources outside of the UK to supplement stock."
Despite the high damage claims for natural disasters, VIG was able to keep its combined ratio after reinsurance, excluding investment income, below the critical level of 100%.
The aims are: to reduce by at least 50% from 1990 levels the areas with critical-level deposits of acid pollutants; to reduce by two thirds, from 1990 levels, ozone concentrations in soil that exceed the critical level for human health; to limit to 20 days per year at most overshoots of the guide value set by the World Health Organisation; and to reduce by one third (from 1990 levels) ozone concentrations in soil in excess of the critical level for crops and semi-natural vegetation.
The aim is to gather evidence of the critical level to which stocks have fallen, and to spur the Scottish Parliament into action.
20080258357 describes heating a sheet of amorphous PLA at 80 to 155 C to develop a critical level of crystallinity, and then forming the sheet on a mold heated to less than the Tg or the crystallization temperature of PLA.
The sensor triggers an alarm if room temperature falls below a critical level.

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