Material substitution: hydrogen mixture replaced with pure hydrogen Table 10-9 In this final example, a nonflammable hydrogen mixture was replaced with pure hydrogen and an explosion management of change resulted. This incident highlights the need for an effective procedure. Division: Description of Operation: Glove box use of By: Chemistry nonflammable hydrogen mixture Date: What if? Answer Probability Consequences Recommendations Hydrogen Ignition of explosive Moderate Severe Assure appropriate mixture is mixture possible if management of change replaced with experimental design procedures are in place to pure hydrogen is not appropriate re-evaluate setup for for use of a flammable gas use flammable gas mixture This file is excerpted from “Identifying and Evaluating Hazards in Research Laboratories: Guidelines developed by the Hazard Identification and Evaluation Task Force of the American Chemical Society’s Committee on Chemical Safety”. © Copyright 2015 American Chemical Society
Material substitution: hydrogen mixture replaced with pure hydrogen Table 10-9 In this final example, a nonflammable hydrogen mixture was replaced with pure hydrogen and an explosion resulted. This incident highlights the need for an effective management of change procedure. Division: Chemistry Description of Operation: Glove box use of nonflammable hydrogen mixture By: Date: What if? Answer Probability Consequences Recommendations Hydrogen mixture is replaced with pure hydrogen Ignition of explosive mixture possible if experimental design is not appropriate for use of a flammable gas mixture Moderate Severe Assure appropriate management of change procedures are in place to re-evaluate setup for flammable gas use This file is excerpted from “Identifying and Evaluating Hazards in Research Laboratories: Guidelines developed by the Hazard Identification and Evaluation Task Force of the American Chemical Society’s Committee on Chemical Safety”. © Copyright 2015 American Chemical Society