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define the hazard ranking system hrs- a procedure for ranking uncontrolled hazardous waste sites in terms of the potential threat based upon the
explain national priorities list npl- also known as superfund list- identify sites which appear to present a significant risk to public health or the
explain national contingency plan ncp- provides detailed direction on the action to be taken at a hazardous waste site including emergency actions
explain cercla and sara - hazardous waste regulations in 1980 the comprehensive environmental response compensation and liability act cercla was
explain rcra and hswa - hazardous waste regulations1 in 1976 congress passed the resource conservation and recovery act rcra and directed epa to
explain some important points for hazardous waste the mixture rule prevents dilution of waste for the purposes of escaping rcra regulation mixtures
explain the toxic characteristics - hazardous waste- from the results of either - extraction procedureep toxicity prior to march 1990 or toxicity
define reactivity - hazardous waste- undergoes violent change wo detonating- reacts violently with water- forms potentially explosive mixtures with
define the ignitability - hazardous waste- is a liquid with flash point lt60degc some exceptions- not a liquid and capable of spontaneous and
define the hazardous waste1 any waste or combination of waste that poses a substantial danger now or future to humans plants and animals without
tee joints-the square tee joint requires a fillet weld that can be made on one or both sides it can be used for light or fairly thick materials for
classification of welding processesthe classificated depending upon the nature of heat source and its movement resulting in spot seam or zonal
as per indian standard is 812-1957define weld as a union between two pieces of a metal at faces rendered plastic or liquid by heat or by pressure or
calculate the amount of wastea municipal solid waste department plans to separate a portion of the ferrous metal newsprint and cardboard from its msw
as per american welding society awswelding is defined as a localized coalescence of metals or non-metals produced either by heating the material to
q can you explain investment casting-investment casting produces very high surface quality and dimensional accuracy-investment casting is commonly
explain the modular incinerators1 prefabricated units with capacities of 45 to 107 tons of solid wasteday2 most use a system involving two combustion
explain fluidized-bed incinerators sand is heated to 800c by oil or gas and blown around fluidized by a blower that sends air from bottom upward
explain the conventional incineration and refuse-derived fuel facilities1 conventional mass-fired incineration most common form of municipal solid
q explain fundamental of metal casting1melting the material2allowing the molten metal to cool and solidify in the moulda plane where the castings are
q molding methods according to the method of making a moldfollowing are the molding methods according to the method of mold makingbull open mold
define the combustion of solid wastea chemical reaction in which the elements in fuel oxidize in presence of excess oxygenc rarr co2 h rarr h2o
q can you explain shell moldsthese molds are prepared by pouring a mixture of sand and thermosetting resin over the heated surface of a metallic
explain the classification of solid waste solid waste can be classified in several different ways putrescible waste - animal and vegetable
what is the sludge volume indextwo 1 l samples of mixed liquor are taken from a lagoon after settling for 30 min in a graduated cylinder 250 ml of