UFC 4-390-01
23 July 2003
3.2.8
Justification of Materials. All materials and their
applications, used in the design of an unmanned pressure test
facility, should be justified. It is not the intent of this
document to limit materials and their applications. New
materials, or time-tested materials in new applications, may be
used if sufficient data exists to ensure the material adequacy of
the system. Justifying data must include the requirements for
care, preservation and maintenance of new materials for the
projected life cycle of the material. The less information and
experience available concerning a given material for a specific
application, the greater the burden upon the applicant to justify
the proposed material for the application. For the purpose of
system certification, types of materials and components are
grouped into three categories that are defined in Appendix A.
3.2.8.1
Design Practices. When required by the SCA, material
selection, design, and fabrication techniques should be justified
in accordance with military and recognized commercial engineering
practices. Proper consideration should be given to complex
configurations and intersections, cyclic fatigue, and low
temperature requirements. Examples of recognized engineering
design practices are:
a) American Society of Mechanical Engineers (ASME),
Boiler and Pressure Vessel Code, Section VIII, Divisions 1 and 2
b) ASME PVHO-1, Safety Standard for Pressure Vessels
for Human Occupancy
c)
NAVFAC Design Manual (DM)-39, Hyperbaric Facilities
d)
ASME B31.1, Power Piping Code
3.2.8.2
Design Criteria. For typical design criteria of
unmanned pressure test facilities, the applicant should refer to
the following appendices of this document:
a) Appendix A: Categorization of Scope of
Certification Materials and Components
b) Appendix B:
Design Parameters for Unmanned
Pressure Test Facilities
c)
Appendix C:
Required Documentation
Flammable Materials Data. The applicant should submit,
3.2.9
for review and approval, a list of all potentially flammable
materials to be used during construction, or to be installed or
used in the unmanned pressure test facility. Flammable materials
are those which will ignite or explode from an electric spark or
when heated and will continue burning in the presence of air or
in any oxygen-enriched atmosphere. Flammable materials should be
evaluated under both normal and emergency atmospheric conditions.
As applicable, all material data should be submitted in standard
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