Table 4.2 Example Category 3 Qualitative Consequence Analysis

DOE-STD-1027-92

Engineering Analysis

Limited engineering analysis is needed to determine the preventive and mitigative

features relied upon for the specific accident sequences identified to determine the

effectiveness for worker protection.

Consequence Analysis

A qualitative determination of consequences from the identified accidents is required.

An example of a qualitative analysis is given in the Table 4.2.

Table 4.2 Example Category 3 Qualitative Consequence Analysis

Uncontrolled Chemical Reaction

Mixing of incompatible chemicals due to personnel error,

Causes:

container leakage, or improper maintenance of equipment

Preventive Features

Ventilated storage cabinets and/or storage areas provided with

Design:

sumps for spill containment

Segregation of non-compatible chemicals, regular inspection of

Administrative:

containers and storage areas, instruction of personnel in

proper handling techniques

Method of Detection: Smoke and ionization detectors for fire conditions, personnel

observation, appropriate alarms

Mitigation Features

Fire suppression equipment (sprinklers, portable fire

Design:

extinguishers), laboratory fume hoods, ventilation design

Employee training, safety procedures, automatic fire department

Administrative:

response, emergency medical technicians available on site

Physical damage to affected area, potential water damage, potential

Potential Impact:

injury to personnel from burns, explosions, or inhalation of

toxic materials, partial shutdown of operations

Risk Determination:

Probability Level:

Low

Consequence Level: Medium

Risk Level:

Low