31B-282 29 Center St Relevant NFPA 54 2002 ProtectionFrom NFPA 54 2002 edition
5.7* Gas Meters.
5.7.2.2 Gas meters shall not be placed where they will be
subjected to damage, such as adjacent to a driveway, under a
fire escape, in public passages, halls, or coal bins, or where
they will be subject to excessive corrosion or vibration.
5.8* Gas Pressure Regulators.
5.8.4 Regulator Protection. Pressure regulators shall be protected
against physical damage.
6.2 Installation of Piping.
6.2.1 Piping installed aboveground shall be securely supported
and located where it will be protected from physical
damage (also see 6.1.4). Where passing through an outside wall,
the piping shall also be protected against corrosion by coating
or wrapping with an inert material approved for such applications.
Where piping is encased in a protective pipe sleeve, the
annular space between the gas piping and the sleeve shall be
sealed at the wall to prevent the entry of water, insects, or
rodents.