A method for monitoring for leakage of flammable compounds, comprising: measuring a first parameter indicative of the presence of flammable compounds in a space around a potential leak source of a flammable compound; determining a prospective presence of the flammable compound based on measurement of the first parameter exceeding a first limit; and measuring a second parameter in the space around the potential leak source, wherein the second parameter is a physical property of gas in the space around the potential leak source, and wherein the second parameter is selected from a temperature, humidity, pressure, or gas flow; characterized by: measuring a third parameter or a plurality of additional parameters, wherein the third or plurality of additional parameters is/are selected from temperature, humidity level, pressure, or gas flow; and characterizing the prospective presence of the flammable compound determined by measurement of the first parameter, in conjunction with the measurement of the second parameter and the third parameter or plurality of additional parameters, as an actual presence of the flammable compound or as a false alarm, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when a rate of change of the second parameter and/or the third parameter or plurality of additional parameters exceeds a fourth limit, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when the measurement of the first parameter is above a second limit, and wherein the characterizing comprises characterizing the prospective presence as a false alarm when both of the following criteria are true: a) the rate of change of the second parameter and/or the third parameter or plurality of additional parameters does not exceed the fourth limit, and b) the measurement of the first parameter is below the second limit. measuring a first parameter indicative of the presence of flammable compounds in a space around a potential leak source of a flammable compound; determining a prospective presence of the flammable compound based on measurement of the first parameter exceeding a first limit; and measuring a second parameter in the space around the potential leak source, wherein the second parameter is a physical property of gas in the space around the potential leak source, and wherein the second parameter is selected from a temperature, humidity, pressure, or gas flow; characterized by: measuring a third parameter or a plurality of additional parameters, wherein the third or plurality of additional parameters is/are selected from temperature, humidity level, pressure, or gas flow; and characterizing the prospective presence of the flammable compound determined by measurement of the first parameter, in conjunction with the measurement of the second parameter and the third parameter or plurality of additional parameters, as an actual presence of the flammable compound or as a false alarm, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when a rate of change of the second parameter and/or the third parameter or plurality of additional parameters exceeds a fourth limit, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when the measurement of the first parameter is above a second limit, and wherein the characterizing comprises characterizing the prospective presence as a false alarm when both of the following criteria are true: a) the rate of change of the second parameter and/or the third parameter or plurality of additional parameters does not exceed the fourth limit, and b) the measurement of the first parameter is below the second limit. measuring a third parameter or a plurality of additional parameters, wherein the third or plurality of additional parameters is/are selected from temperature, humidity level, pressure, or gas flow; and characterizing the prospective presence of the flammable compound determined by measurement of the first parameter, in conjunction with the measurement of the second parameter and the third parameter or plurality of additional parameters, as an actual presence of the flammable compound or as a false alarm, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when a rate of change of the second parameter and/or the third parameter or plurality of additional parameters exceeds a fourth limit, wherein the characterizing comprises characterizing the prospective presence as an actual presence of the flammable compound when the measurement of the first parameter is above a second limit, and wherein the characterizing comprises characterizing the prospective presence as a false alarm when both of the following criteria are true: a) the rate of change of the second parameter and/or the third parameter or plurality of additional parameters does not exceed the fourth limit, and b) the measurement of the first parameter is below the second limit.