critical level

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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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The water level at Angat Dam, which serves as Metro Manila's main water source, dropped to critical levels in July, but was slowly replenished by rain showers due to the southwest monsoon and the recent storms that hit the country.
Domestic water supply, hydro-power and irrigation are among the sensitive issues of Angat Dam, particularly during critical levels of the Angat reservoir, and thus results in the reduction of National Irrigation Administration's allocation which adversely affects the extent of actual irrigated area in the Angat-Maasim River Irrigation System (AMRIS).
However, this caused the adjoining facilities to operate at critical levels which could lead to power outages in affected areas.
Water level in Rawal Lake has not fallen to critical levels, however, and the supply of water in Tarbela and Mangla is likely to increase gradually as glaciers melt due to high temperatures.
Paulo and Salamao study Hamiltonian flows associated to smooth functions H: R4 -> R restricted to energy levels close to critical levels. They assume the existence of a saddle-center equilibrium point </pc/> in the zero energy level H-1(0).
She added: "Today we have between four and eight days supply but blood supplies were at critical levels in November.
Therefore, determining the critical levels for soil chemical attributes will allow a more detailed interpretation of soil nutritional analysis and can sort the factors by the limitation of agricultural yield for many areas.
This in turn will lead to suspension of work in the days when the river reaches critical levels, Minister Papazov told Bulgarian National Radio.
Four of the country's nine dams reached their critical levels, while the rest were near critical levels in six days since Egay began as a low pressure area in the southern Philippines on Tuesday, said Undersecretary Benito Ramos of the National Disaster Risk Reduction and Management Council (NDRRMC).
In the safety critical domain, devices required to meet the most critical levels of certification must verify software traceability from requirements through design to code at both source- and object-code levels.
A NORTH Wales council that reached critical levels of grit has been given a 700 tonne delivery.

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