UFC 4-390-01
23 July 2003
3.2.10
Hazard Analysis. As part of the design process, a
hazard analysis must be performed to evaluate the effects of all
possible failures. The hazard analysis must be performed
assuming that only one failure occurs at a time, not multiple
failures occurring at the same time. The applicant should submit
the hazard analysis of the system for review and approval by the
SCA. The hazard analysis should describe the possible effects of
a mechanical failure or an operator error for each component or
should clearly show what features, warnings or procedures have
been incorporated into the design, operation, and maintenance of
the system to preclude or minimize the probability of failure.
It is the responsibility of the applicant to ensure that
conditions identified as significant safety hazards are
eliminated or reduced to the lowest practical level.
Mishaps are not always the result of equipment failure. Human
error, when responding to a routine command, a minor problem, or
operation of a control function at the wrong time can result in a
catastrophe. Operating and emergency procedures must be
specific, clear and concise to avoid confusion. The hazard
analysis should show that this type of failure has been
considered in the design of the system and that safeguards have
been taken to reduce the likelihood of such an occurrence.
MIL-STD-882 provides an acceptable set of guidelines for the
conduct of a hazard analysis. The application and tailoring
guidelines given in MIL-STD-882 should be carefully followed to
make the hazard analysis no more complicated than is necessary to
prove the safety of the design. Hazard Categories, as they
pertain to unmanned pressure test facilities, are defined in
Section 2.
3.3 Fabrication And Assembly Documentation is required to
verify that fabrication and assembly procedures meet engineering
standards necessary to deliver a safe, reliable system. Copies
of all documentation must be submitted with the certification
package or otherwise made available for SCA review in a manner
negotiated between the SCA and the applicant. All written
fabrication and assembly processes that may affect the designed
performance of the system must be identified. Documentation must
include fabrication drawings and specifications, as well as
supplementary information, not necessarily specified on the
drawings, but which affects the process. Information of
importance includes, but is not limited to the following:
a)
Fabrication/assembly procedures
b)
Process instructions
c)
Welding procedures
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