the agent is stored (in assembled munitions or bulk storage). Consequently, PCAPP and BGCAPP can reasonably expect to experience the same types of events with similar causal factors. Because of the unique nature of the processes to be employed at PCAPP and BGCAPP, however, and the extensive use of first-of-a-kind equipment, it may be reasonable to expect more events in the early part of operations and, based on the data in Tables 3-1 and 3-2, a shift in the relative proportion of causal factors. For example, design deficiencies might be more prevalent in new facilities than in older or second-generation facilities.

Finding 3-1. The causal factors involved in past events at chemical agent disposal facilities are not process specific. Consequently, the Pueblo Chemical Agent Destruction Pilot Plant and the Blue Grass Chemical Agent Destruction Pilot Plant can reasonably be expected to experience the same types of events having causal factors similar to those experienced at the Chemical Materials Agency sites. Also, there may be an increase in the frequency of events and a shift in the relative frequency of causal factors.

Causal factors for process safety events are discussed further in Chapter 4.


NRC (National Research Council). 2002. Evaluation of Chemical Events at Army Chemical Agent Disposal Facilities. Washington, D.C.: The National Academies Press.

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