RESPONDING TO NATURAL GAS EMERGENCIES


Interface. The point at which two liquid petro- leum products meet and mix when shipped in a pipeline. May also be referred to as transmix.


Interstate Natural Gas Association of Amer- ica (INGAA). Professional trade organization that advocates regulatory and legislative posi- tions of importance to the natural gas pipeline industry in North America.


Intrinsically Safe Construction. Equipment or wiring is incapable of releasing sufficient elec- trical energy under both normal and abnormal conditions to cause the ignition of a flammable mixture. Commonly used in portable direct- reading instruments for operations in Class I, Division 2 hazardous locations.


Isolating the Scene. The process of preventing persons and equipment from becoming ex- posed to a actual or potential hazmat release. Includes establishing isolation perimeter and control zones.


Isolation Perimeter. The designated crowd control line surrounding the Hazard Control Zones. The isolation perimeter is always the line be-tween the general public and the Cold Zone. Law enforcement personnel may also refer to this as the outer perimeter.


J


Jet Fuel. A highly refined kerosene petroleum distillate. There are two main grades of jet fuel used in commercial aviation—Jet A and Jet A- 1. Both are kerosene distillates. Jet A is found in the United States and has a flash point above 100°F (38°C), Jet A-1 is a similar kerosene fuel that is used for civil commercial aviation inter- nationally. Jet B, is a blend of kerosene and gasoline, and may be found in extremely cold climates where cold weather performance is critical (e.g., Canada).


Joint Information Center (JIC). Single location where Public Information Officers from differ- ent agencies work jointly and cooperatively to provide information to the public and other ex- ternal world groups.


106 L


LDC. Local Distribution Companies. Leak. The uncontrolled release of a hazardous material which could pose a threat to health, safety, and/or the environment.


Leak Control Compounds. Substances used for the plugging and patching of leaks in non- pressure containers (e.g., putty, wooden plugs, etc.).


Leak Control Devices. Tools and equipment used for the plugging and patching of leaks in non-pressure and some low-pressure contain- ers, pipes, and tanks (e.g., patch kits, Chlorine kits, etc.).


Level I Staging. The initial location for emer- gency response units at a multiple unit re- sponse to a hazmat incident. Initial arriving emergency response units go directly to the in- cident scene taking standard positions (e.g., upwind, uphill as appropriate), assume com- mand and begin site management operations. The remaining units stage at a safe distance away from the scene, until ordered into action by the Incident Commander.


Level II Staging. Used for large, complex or lengthy hazmat operations. location where ar- riving units are initially sent when an incident escalates past the capability of the initial re- sponse. It is a tool usually reserved for large, complex, or lengthy hazmat operations. Units assigned to Staging are under the control of a Staging Officer or Staging Area Manager.


Liaison Officer. Serves as a coordination point between the Incident Commander and any as- sisting or coordinating agencies who have re- sponded to the incident, but who are not part of unified command or are represented at the Incident Command Post. Member of the Com- mand Staff.


Liquid Chemical Splash Protective Clothing. The garment portion of a chemical protective clothing ensemble that is designed and config- ured to protect the wearer against chemical liq- uid splashes but not against chemical vapors

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