Feasibility Study of the Pulsed Gas Analyser for Toxic Vapor Detection in the Minuteman III Environment

摘要

A program was carried out for demonstrating the feasibility of a new concept for detecting and measuring monomethyl hydrazine (MMH) and nitrogen dioxide (NO2) in the Minuteman III environment. A review of candidate methods for detection and measurement of MMH and NO2 leakage vapors was made. The Pulsed Gas Analyzer (PGA) concept was selected and a feasibility demonstration was made. This method was shown to have the required detectivity and measurement response for these materials. During the program, tests were run to evaluate performance of the laboratory model under extremes of humidity and temperature as well as in the presence of contaminate materials at relatively high concentrations. The logic scheme used for MMH and NO2 detection was based on the use of only two mass numbers in the mass spectra of these materials. (Author)