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also an important consideration, where physical designs must minimally meet existing standards, codes and
regulations.
12.2.1 New Structures and Equipment
Facility system safety also evaluates new structures and new equipment being installed. The hazards
associated with physical structures involve: structural integrity, electrical installation, floor loading, snow
loading, wind effects, earthquake and flooding. Fire protection and life safety are also important
considerations. The fire protection engineering aspects are evaluated, such as automatic fire protection
equipment, fire loading, and structural integrity.
System safety is also concerned with the analysis of newly installed equipment. The following generic
hazards should be evaluated within formal analysis activities. Generic hazards areas are: electrical,
implosion, explosion, material handling, potential energy, fire hazards, electrostatic discharge, noise,
rotational energy, chemical energy, hazardous materials, floor loading, lighting and visual access,
electromagnetic environmental affects, walking/working surfaces, ramp access, equipment
failure/malfunction, foreign object damage, inadvertent disassembly, biological hazards, thermal non
FAA System Safety Handbook, Chapter 12: Facilities Safety
December 30, 2000
12 - 5
ionizing radiation, pinch/nip points, system hazards, entrapment, confined spaces, and material
incompatibility.
12.2.2 Site Selection
The FAA carefully considers and weighs environmental amenities and values in evaluating proposed
Federal actions relating to facility planning and development, utilizing a systematic interdisciplinary
approach and involving local and state officials and individuals having expertise.
The environmental assessment and consultation process provides officials and decision makers, as well as
members of the public, with an understanding of the potential environmental impacts of the proposed
action. The final decision is to be made on the basis of a number of factors. Environmental considerations
are to be weighed as fully and as fairly as non-environmental considerations. The FAA's objective is to
enhance environmental quality and avoid or minimize adverse environmental impacts that might result from
a proposed Federal action in a manner consistent with the FAA's principal mission to provide for the safety
of aircraft operations.
In conducting site evaluations the following risks must be evaluated from a system safety perspective.
· Noise
· Environmental Site Characterization
· Compatible Land Use
· Emergency Access and existing infrastructure
· Water supply
· Local emergency facilitates
· Social Impacts
· Induced Socioeconomic Impacts
· Air & Water Quality
· Historic, Architectural, Archeological, and Cultural Resources.
· Biotic Communities
· Local Weather Phenomena (tornadoes, hurricanes and lighting)
· Physical Phenomena (e.g. mudslide and earth quakes)
· Endangered and Threatened Species of Flora and Fauna.
· Wetlands.
· Animal Migration
· Floodplains.
· Coastal Zone Management
· Coastal Barriers.
FAA System Safety Handbook, Chapter 12: Facilities Safety
December 30, 2000
12 - 6
· Wild and Scenic Rivers
· Farmland.
· Energy Supply and Natural Resources.
· Solid Waste
· Construction Impacts.
12.2.3 Design Phase
The tasks to be performed during design are dependent upon the decisions made by the SSWG based on the
PHL/PHA and negotiated in the contractual process. If the cost of the facility and the degree of hazard or
mission criticality justify their use, analyses discussed in Chapters 8 and 9 such as Fault Tree, Failure
Mode and Effects Analysis, and Operating and Support Hazard Analysis should be considered.
Besides monitoring risk analyses, there are several actions the SSWG performs during the design process.
They participate in design reviews and track needed corrective actions identified in analyses for
incorporation in the design.
12.2.4 Construction Phase
During the construction phase, two safety related activities take place. Change orders are reviewed to
ensure changes do not degrade safety features already incorporated in the design. Successful execution is
dependent on disciplined configuration control.
The final step before the user takes control of the facility is the occupancy inspection. This inspection
verifies the presence of critical safety features incorporated into the design. The use of a hazard tracking
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System Safety Handbook系统安全手册上(16)
