§ 2341. Requirements to Prevent Electrical Arcing at Onshore Terminals.

(a) Insulating Flange Joint.

For the purpose of this section, an “insulating flange joint” means a typical insulating flange joint as described in Appendix D of ISGOTT or any other insulating flange that meets the electrical resistance requirements of subsection (e) of this section.

(b) Insulating Flange Joints on Metallic Cargo or Vapor Control Arms.

Each metallic cargo or vapor control arm used during a transfer operation shall be fitted with an insulating flange joint to ensure electrical discontinuity between the terminal and vessel. All metal on the vessel's side of the insulating flange joint shall be electrically continuous to the vessel and that on the terminal's side shall be electrically continuous to the terminal's grounding system.

(c) Cargo and Vapor Control Hose Connections.

Each cargo hose string or vapor control hose used during a transfer operation shall have either an insulating flange joint or a single length of non-conducting hose to ensure electrical discontinuity between the terminal and vessel. All metal on the vessel's side of the non-conducting length of hose shall be electrically continuous to the vessel and that on the terminal's side shall be electrically continuous to the terminal's grounding system.

(d) Testing of Insulating Flange Joints.

(1) The terminal operator shall test or cause to be tested each insulating flange joint by measuring the electrical resistance between the metal pipe on the terminal side of the flange joint and the end of the hose or metal arm when freely suspended. Such tests shall be conducted at intervals not exceeding three months.

(2) At terminals which conduct infrequent transfers of oil and the interval between transfers exceeds three months, the test specified in subsection (d)(1) of this section need not be conducted at intervals not exceeding three months. However, such test shall be conducted no more than 7 days prior to the connection of any metallic loading or vapor recovery arm or hose string for the purpose of transferring oil.

(3) The terminal operator shall maintain records of test dates, measured electrical resistance and name and designation of person conducting the test at the terminal for a period of at least one year from the date of testing.

(e) Insulating Flange Joints: Minimum Resistance.

No insulating flange joint whose measured electrical resistance is less than 1000 ohms shall be used in any metallic cargo or vapor recovery arm or hose string connection between the terminal and a vessel.

(f) Vessel-to-shore Electrical Bonding Cables.

No vessel-to-shore electrical bonding cables or wires shall be used for a transfer operation.

HISTORY

1. New section filed 10-5-94; operative 11-4-94 (Register 94, No. 40).

2. Repealer of subsection (a), subsection relettering, and amendment of newly designated subsections (a)-(c), (d)(2) and (f) filed 3-9-99; operative 4-8-99 (Register 99, No. 11).

Note

Note: Authority cited: Sections 8750, 8751, 8752, 8755 and 8757, Public Resources Code. Reference: Sections 8750, 8751, 8752, 8755, 8757 and 8758, Public Resources Code.