protection in accordance with Corps TM 5-811-3, AFMAN 88-9,
NFPA 780, MIL-HDBK-1004/6, and local installation
requirements. For fault current protection and lightning
protection, ground the following items through ground rods or
beds or bond to a grounded network. Provide ground for these
items as required by the above references.
a) Substation fences.
b) Lightning arrestors and lightning shield conductors.
c) Operating mechanisms of overhead airbreak switches.
e) Aboveground storage tanks.
220.127.116.11 Static Electricity Prevention
. To prevent static
electricity, ground the following items directly through
ground rods or beds or bonded to a grounded network. Do not
exceed 10,000 ohms of resistance to ground for the following
equipment not directly supported or bolted to a grounded
b) Pipe support columns at intervals normally not
exceeding 75 feet (23 m).
c) Aircraft direct fueling stations.
e) Internal floating pans bonded to the storage tank
f) Aboveground portions of electrically isolated piping
at truck, rail, and marine loading and unloading stations.
18.104.22.168 Installation. Isolate grounding systems for
equipment from all other ground systems. Additional grounding
is not required for overhead electrical equipment bolted