Labels and Signs
All equipment should be provided with labels or name plates. The labels or nameplates should provide enough information about the equipment so that onsite personnel can easily find detailed information about the equipment in the Documentation. Piping should be labeled so that facility personnel can readily determine the fluid service for each pipeline. ASME A13.1, Scheme for the Identification of Piping Systems provides guidance for labeling piping. Instruments should be identified by a label or a tag that provides enough information to enable onsite personnel to easily find detailed information about the instrument in the Documentation.
See Hydrogen Storage and Piping Systems section.
The following information should be posted in clear view of all who enter any workspace where hydrogen is used or stored:
- General workspace information (including the name of the workspace, the activity conducted in the workspace, and for buildings, the building name and room number)
- Emergency response and call information (See Dealing with an Incident)
- The emergency evacuation route
- Identification of hazards (e.g. cryogenic hydrogen)
- Personal protective equipment requirements for entry
- Map showing the location of primary and secondary hydrogen shutoffs
- Location of the Material Safety Data Sheet (MSDS) catalog
- Location of operating procedures and emergency procedures for each system in the workspace
Additional information that should be available in an indoor workspace:
- MSDS catalog
- Operating procedures and emergency procedures for each system in the workspace
All areas where hydrogen is stored or used should contain a permanent placard stating:
HYDROGEN - FLAMMABLE GAS - NO SMOKING - NO OPEN FLAMES
Storage sites for liquid hydrogen should also have a sign that reads:
LIQUEFIED HYDROGEN - FLAMMABLE GAS - NO SMOKING - NO OPEN FLAMES
Examples of standard placards:
Signs should be placed on all liquid hydrogen vessels near the pressure-relief valve vent stack stating:
DO NOT SPRAY WATER ON OR IN THE VENT OPENING.