directly to grounded metallic structures. Where feasible,
separate the conductor connecting a lightning rod to the
grounding electrode from other grounding conductors. Route
with a minimum of sharp bends and in the most direct manner to
the grounding electrode. Do not use this electrode in lieu of
grounding electrodes which may be required for other systems.
This provision does not prohibit the required bonding together
for grounding electrodes of different systems.
SECURITY. Unless otherwise directed by Service
Headquarters, provide security fencing around all petroleum
facilities to ensure safety and inhibit sabotage, theft,
vandalism, or entry by unauthorized persons. Install a 7-foot
(2.1 m) fabric height fence of chain-link type with three-
strand barbed wire outriggers on top or its equivalent. Ensure
fencing and gates are in accordance with MIL-HDBK-1013/10 or
Organization for additional requirements.
CATHODIC PROTECTION. Obtain the services of a National
Association of Corrosion Engineers (NACE)-certified Corrosion
Specialist or Cathodic Protection Specialist or a registered
professional Corrosion Engineer to perform all cathodic
protection design and testing. For Army and Air Force
designs, comply with the current Engineering Technical Letters
in addition to the following requirements. For Navy designs,
comply with NAVFAC letter 11012 046C/cmm.
2.12.1 Tanks. For all underground steel tanks and tank
bottoms of aboveground vertical tanks, provide cathodic
protection in accordance with MIL-HDBK-1004/10, API RP 651,
40 CFR Part 280, Corps TM 5-811-7, UL 1746, and AFMAN 85-16.
For additional information on cathodic protection, refer to
NAVFAC MO-230 and AFI 32-1054. Current tank design
configuration electrically isolates the tank bottom from
surrounding earth. Therefore, install cathodic protection
between the liner and the tank bottom.
2.12.2 Piping. For all carbon steel and stainless steel
underground and underwater piping, provide cathodic protection
in accordance with MIL-HDBK-1004/10, Corps TM 5-811-7, and 40
CFR Part 280 for piping associated with underground storage
tanks. For additional information on cathodic protection,