Key Message:  A comprehensive approach was applied to developing an Emergency Planning Hazards Assessment (EPHA) planning inventory for a chemical facility at Sandia National Laboratories (SNL) – New Mexico.  The intent was to ensure that there is a technical planning basis and EAL for any feasible classifiable operational emergency.

As part of a major revision of an EPHA for a chemical facility at SNL - New Mexico, a comprehensive approach was applied in developing a hazardous chemical planning inventory for the facility.  The goal was to provide a strong technical planning basis for development of EALs and reference information for SNL's Consequence Assessment Team.  The process identified hazardous chemicals that could feasibly produce classifiable operational emergencies if released in an incident. 

The process followed the chemical screening requirements and guidance in DOE O 151.1D and Guide 151.1-1B with some enhanced steps.

This presentation summarizes:

• The role of a chemical planning inventory in EPHA/EAL development
• Organization of the DOE O 151.1D and Guide 151.1-1B requirements and guidance into an analysis tool for screening and evaluation
• Collaboration with the facility to develop an inventory for screening/evaluation
• Example key considerations in screening/evaluation, included:
• Products that are mixtures of multiple hazardous components
• Chemical reactions
• Flammability/pyrophoricity
• Laboratory scale quantities
• Dispersibility
• Screening for potential classifiable operational emergencies from less-than-laboratory-scale quantities
• Practical application of the approach to the SNL chemical facility and results
• Benefits from this approach to emergency management

• Lessons learned from application of this approach​