Environmental design guidance shall be
provided by the contracting activity.
4.4.1 Environmental plans. It is necessary to give proper consideration to
environments throughout the development process in order to obtain a quality
product. To assure such consideration, environmental management plans shall be
formulated that require the following engineering tasks: determination of life
cycle environmental conditions; establishment of environmental design and test
requirements, including a test plan; the collection and analysis of field data
for verification of environmental design and test criteria. Proper attention
to each of these tasks ensures that the correct environments are identified
for test, that engineering development as well as qualification tests are
phased properly into the item's acquisition program, that environmental test
conditions are traceable to life cycle conditions realistically encountered,
and that testing is appropriate for the item application. The following plans,
tasks, and documentation are established to facilitate the tailoring process.
Each will be prepared directly by the contracting activity or by the
contractor as directed by the contracting activity. Limited information on
environmental conditions is provided in MIL-STD-810 and MIL-STD-210.
Information on electromagnetic environmental management guides is provided in
MIL-HDBK-237 and MIL-STD-210.
4.4.1.1 Environmental design criteria and test plan. This plan shall be in
accordance with MIL-STD-810. This plan shall define the specific environmental
design and test requirements and include an environmental test plan. Results
obtained under provisions of above shall be utilized, along with the
individual environmental test methods listed in MIL-STD-202 and MIL-STD-810.
Consideration shall be given to the following:
(a). Probability of
environmental occurrence, alone or in combination. Note: Mission critical
equipment shall be suitable for operation in any condition that is to be
encountered,regardless of the probability.
(b). Expected effects and
failure modes.
(c). Effect on hardware performance and mission
success.
(d). Likelihood of problem disclosure by the test
methods.
(e). Occurrence of similar environmental stress in more than
one life profile phase.
(f). Experience gained from other equipment
similarly deployed.
4.4.1.2 Environmental management plan. The
environmental management plan shall be in accordance with MIL-STD-810. The
overall purpose of this plan is to develop a viable and cost effective program
to assure that military equipment will be designed and tested for all
pertinent environmental conditions to which it will be subjected during its
life cycle. The overall management of the environmental program shall include
consideration of manpower requirements, scheduling, life cycle, environmental
conditions, test tailoring, test performance, analysis of results, corrective
actions, and collection of data about, and analysis of, actual field
environments. Plans for monitoring, assessing, reporting, and implementing the
entire environmental program shall be addressed.
4.4.1.3 Life cycle
environmental profile. The life cycle environment profile shall be in
accordance with MIL-STD-810. A life cycle history of events and associated
environmental conditions for an item from its release from manufacturing to
its retirement from use shall be determined. The life cycle shall include the
various phases an item will encounter in its life, such as: handling,
shipping, or storage prior to use; phases between missions, such as stand-by,
storage, or transfer to and from repair sites; geographical locations of
expected deployment; and platform environments. The environments and
combination of environments the equipment will encounter at each phase shall
be determined. All potential deployment scenarios shall be described. The
following factors shall also be taken into account:
(a). Configuration
of the hardware.
(b). Environment that is encountered.
(c).
Platform with which the hardware interfaces.
(d). Interfaces with other
equipment.
(e). Absolute and relative duration of exposure
phase.
(f). Number of times phase will occur; intermittency of
phase.
(g). Probability of occurrence of environmental
conditions.
(h). Geographical location.
(i). Any other information
which will help identify any environmental conditions which
may act upon the item.
