RESPONDING TO NATURAL GAS EMERGENCIES


include MC-306/DOT-406 used for transport- ing flammable and combustible liquids, and MC-331 used for high pressure gases.


Cathodic Protection. Method of pipeline cor- rosion protection that uses a constant low volt- age electrical current run through the pipeline to counteract corrosion.


CERCLA. (See Comprehensive Environmental Response Compensation and Liability Act).


CGI. Combustible Gas Indicator.


Chemical Protective Clothing (CPC). Single or multi-piece garment constructed of chemical protective clothing materials designed and configured to protect the wearer’s torso, head, arms, legs, hands, and feet. Can be constructed as a single or multi-piece garment. The gar- ment may completely enclose the wearer either by itself or in combination with the wearer's respiratory protection, attached or detachable hood, gloves and boots.


City Gates. (See Gate Stations.)


Classes. As used in NFPA 70—The National Electric Code, used to describe the type of flammable materials that produce the haz- ardous atmosphere. There are three classes:


1) Class I Locations—Flammable gases or va- pors may be present in quantities sufficient to produce explosive or ignitible mixtures.


2) Class II Locations—Concentrations of com- bustible dusts may be present (e.g., coal or grain dust).


3) Class III Locations—Areas concerned with the presence of easily ignitible fibers or fly- ings (e.g., cotton milling).


Clean Water Act (CWA). Federal legislation that resulted in EPA and state regulations and standards governing drinking water quality, pollution control, and enforcement. The Oil Pollution Act (OPA) amended the CWA and authorized regulations pertaining to oil spill preparedness, planning, response and clean- up.


Code of Federal Regulations (CFR). A collec- tion of regulations established by federal law. Contact with the agency that issues the regula-


98


tion is recommended for both details and inter- pretation.


Cold Zone. The hazard control zone of a haz- mat incident that contains the incident com- mand post and other support functions as are deemed necessary to control the incident. This zone may also be referred to as the clean zone or the support zone.


Combined Sewers. Carries domestic waste- water as well as storm water and industrial wastewater. It is quite common in older cities to have an extensive amount of these systems. Combined sewers may also have regulators or diversion structures that allow overflow di- rectly to rivers or streams during major storm events.


Command. The act of directing, ordering and/or controlling resources by virtue of ex- plicit legal, agency or delegated authority.


Command Staff. The command staff consists of the Public Information Officer, the Safety Officer and the Liaison Officer, who report directly to the Incident Commander.


Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). Known as CERCLA or SUPERFUND, it ad- dresses hazardous substance releases into the environment and the cleanup of inactive haz- ardous waste sites. It also requires those who release hazardous substances, as defined by the Environmental Protection Agency (EPA), above certain levels (known as “reportable quantities”) to notify the National Response Center.


Compressor Stations. Pipeline facilities with compressors that are used to boost the pressure on gas pipelines that is lost as a result of friction loss.


Confined Space. A space that (1) is large enough and so configured that an employee can bodily enter and perform assigned work; (2) has limited or restricted means for entry or exit (e.g., tanks, vessels, silos, storage bins, hop- pers, vaults, and pits are spaces that may have limited means of entry); and (3) is not designed for continuous employee occupancy.

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100  |  Page 101  |  Page 102  |  Page 103  |  Page 104  |  Page 105  |  Page 106  |  Page 107  |  Page 108  |  Page 109  |  Page 110  |  Page 111  |  Page 112  |  Page 113  |  Page 114  |  Page 115  |  Page 116  |  Page 117  |  Page 118  |  Page 119  |  Page 120  |  Page 121  |  Page 122  |  Page 123  |  Page 124  |  Page 125  |  Page 126  |  Page 127  |  Page 128  |  Page 129  |  Page 130  |  Page 131  |  Page 132  |  Page 133  |  Page 134  |  Page 135  |  Page 136