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USACE / NAVFAC / AFCESA
UFGS-02551N (August 2001)
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Preparing Activity: NAVFAC
Superseding
UFGS-02551N (September 1999)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
Latest change indicated by CHG tags
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SECTION 02551N
NATURAL GAS DISTRIBUTION
08/01
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NOTE: This guide specification covers the
requirements for natural gas distribution main and
service line piping systems to be operated at low
pressure or at high pressure.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: A low pressure system is one in which the
pressure is substantially the same as the pressure
provided to the customer. A high pressure system is
one in which the pressure is higher than the
standard service pressure delivered to the customer,
but not in excess of 413 kPa (gage) 60 psig. If a
gas distribution system is required to operate at
pressures higher than 413 kPa (gage) 60 psig, the
various pipe, fitting, and valve specifications used
herein must be reviewed to determine their
applicability to the higher pressures, additional
pressure regulators and pressure limiting devices
must be installed as required in ASME B31.8, and the
appropriate paragraphs modified as necessary.
Initial test pressure for systems that will operate
at pressures higher than 413 kPa (gage) 60 psig
shall be a minimum of 1.5 times the maximum working
SECTION 02551N
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