Before laboratory tests or chemical reactions are begun, evaluations should be done for hazards that can be encountered or generated during the course of the work. Evaluations should include hazards associated with:
- Hydrogen properties and reactivity with other chemicals in the process
- Properties and reactivity of intermediates and end products that might be formed
- Catalysts and materials with catalytic-like properties
- Operation of the equipment at the operating conditions
Regular reviews of laboratory operations and procedures should be conducted with special attention given to any change in materials, operations, or personnel.
Unattended or automatic laboratory operations involving hydrogen should be provided with 1) regular surveillance for abnormal conditions and 2) controls to automatically shut down operations and turn off gas flow if adverse conditions develop.