UFC 4-390-01
23 July 2003
require the stress analyses and will inform the applicant whether
material may be exempted.
Examples of loads to be considered are:
a)
Weight of water used for hydrostatic testing
b) Static loads imposed by the clamping or securing
devices used to secure the system
c) Maximum operating pressure of the gas or fluid
within the system
d) Thermal stresses due to the operating temperature
range of the system
e) Reactions due to differential thermal expansion
between the system and the structure to which it may be fixed or
due to elastic expansion of the system caused by internal
pressure
f)
Shock, including accidental blows
g)
Vertical and horizontal loads on foundations where
applicable
h)
Seismic requirements where applicable
i) Dynamic loads, such as those encountered from
collapse of any non-pressure-compensated elements
j) Fatigue loads of the pressure resisting components
and piping for a specified number of cycles
System Drawings. Certification of all unmanned
3.2.6
pressure test facilities should require drawings meeting the
requirements of MIL-DTL-31000, Technical Data Packages or
acceptable commercial standards and which are adequate to support
technical design reviews. The level of drawing detail should
reflect the level of design maturity that has been attained at
the time of each design review. The function and complexity of
the subsystem being reviewed should determine the number and type
of drawings required for an adequate technical design review. In
addition to showing system and subsystem configuration, drawings
normally required to support a technical design review must have
adequate detail to show material, fabrication, cleaning, testing,
and special assembly requirements. In most cases where
mechanical or electrical systems are being reviewed, system
schematic diagrams with the above information are acceptable.
However, where critical equipment such as the pressure hull is
being evaluated, actual assembly or fabrication drawings are
required for the final design review. The applicant should
submit up-to-date copies of drawings, signed by the appropriate
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