Pipeline Company

Dyes. Dyes are added to gasoline to impart color for a number of reasons. Originally, these compounds were used to identify leaded gasoline so that it would not be used for other inappropriate purposes, such as solvents. Dyes are used to identify different gasoline grades so that pipeline companies can separate tenders, and so that service stations can easily check that the correct grade was placed in the underground tanks (aq). Dyes are usually based on a2o chemistry and are added in concentrations below 10 ppm (see Azo dyes). 

AH corrosion inhibitors in use as of this writing are oil-soluble surfactants (qv) which consist of a hydrophobic hydrocarbon backbone and a hydrophilic functional group. Oil-soluble surfactant-type additives were first used in 1946 by the Sinclair Oil Co. (38). Most corrosion inhibitors are carboxyhc acids (qv), amines, or amine salts (39), depending on the types of water bottoms encountered in the whole distribution system. The wrong choice of inhibitors can lead to unwanted reactions. Eor instance, use of an acidic corrosion inhibitor when the water bottoms are caustic can result in the formation of insoluble salts that can plug filters in the distribution system or in customers vehicles. Because these additives form a strongly adsorbed impervious film at the metal Hquid interface, low Hquid concentrations are usually adequate. Concentrations typically range up to 5 ppm. In many situations, pipeline companies add their own corrosion inhibitors on top of that added by refiners. 

Some U.S. natural gas pipeline companies are subsidiaries of gas hoi ding companies. The largest U.S. natural gas pipeline companies, in terms of overall length of transmission systems are Northern Natural Gas Company, 26,539 km Tennessee Gas Pipeline Corporation, 23,567 km Columbia Gas Transmission Company, 18,481 km Natural Gas Pipeline Company of America, 17,200 km and Transcontinental Gas Pipe Line Corporation, 17,071 km. For gas moved in 1994, the four largest pipelines were ANR Pipeline Company, 95,278 x 10 m (3,363,275 MMcf), of which 40.8% was gas moved for others Transcontinental Gas Pipe Line Corporation, 87, 050 x 10 m (3,073,801 MMcf), of which 99.7% was moved for others Natural Gas Pipeline Company of America, 83,089 x 10 m (2,933,940 MMcf), of which 87.1% was moved for others and Northern Natural Gas Company, 56, 523 x 10 m ... 

At the beginning of 1992, the largest Hquids pipelines in the United States, based on pipeline length, were Amoco Pipeline Co., 19,096 km Mobil Pipe Line Co., 15,026 km Exxon Pipeline Co., 14,983 km and Conoco Pipe Line Co., 12,980 km. Distances do not include 1316 km of the Trans-Alaska Pipeline with multiple ownership. In both 1991 and 1992, the product pipeline company with the most product deHveries was Colonial Pipeline with 104,990,000 m, more than double the amount deHvered by Santa Ee Pacific Pipelines, Inc. The top pipeline in terms of cmde oil deHveries was the Alyeska Pipeline Service Co., operator of the Trans-Alaska Pipeline System, with movement of 105,735,000 m (3). 

The demand for gas is highly seasonal. Thus pipeline companies economi2e by si2ing production faciUties to accommodate less than the system s maximum wintertime demand. Underground storage faciUties are used to meet seasonal and daily demand peaks. In North America, gas is stored in three main types of underground formations depleted oil or gas fields, aquifers that originally contained water, and caverns formed by salt domes or mines. 

Transportation of natural gas across state lines from production to consuming areas is a function of interstate pipeline companies. The modern U.S. natural gas industry also includes natural gas exploration and production companies, intrastate pipelines, local distribution companies (LDCs), end-users and, the most recent addition to the industry, marketers. 

Tn 1985, the Federal Energy Regulatory Commission (FERC) began a series of regulatory actions designed to improve the competitiveness of the natural gas market and give the customers of interstate pipeline companies more seiwice options and thus allow ultimate consumers to benefit from deregulation of wellhead prices. 

Washington, DC Energy Information Administration. Natural Gas The Fuel, The Future, The Regulation. Detroit, MT ANR Pipeline Company. 

Further government regulation that totally changed how natural gas was distributed resolved this difficulty. Historically, pipeline companies were required to act as purchasers and resellers of gas. The new approach ol the 1980s limited pipelines to selling transmission seiwices. Customers of the pipelines purchase the gas directly from producers. By exiting from gas purchasing, the pipelines could similarly hack out of unattractive contracts. 

This work was partially supported by the National Science Foundation under award number CPE-8260766 and under National Science Foundation grant CBT-8417876. Support of the copolymer testing program by A and R Pipeline Company is gratefully acknowledged. 

The concept of GRI was based on the recommendation of an ad hoc committee of the Boards of A.G.A. and the Interstate Natural Gas Association of America (INGAA), the trade association of the interstate pipeline companies. GRI was incorporated in Illinois as a not-for-profit scientific research corporation... 

Water may be found in the crude either in an emulsified form or in large droplets. The quantity is generally limited by pipeline companies and by refiners, and steps are normally taken at the wellhead to reduce the water content as low as possible. However, after a spill, water can be introduced by climatic conditions, and the relevant tests (ASTM D96, D954, D1796 IP, 2004) are regarded as important in crude oil analyses. Prior to analyses, it is often necessary to separate the water from a crude oil sample, and this is usually carried out by one of the procedures described in the preliminary distillation of crude petroleum (IP 24). Overall, there are several methods that can be employed for organic semivolatile sample preparation and cleanup procedures (Table 6.4). 

Commodity natural gas is substantially free of sulfur compounds the terms sweet and sour are used to denote the absence or presence of H2S. Some wells, however, deliver gas containing levels of hydrogen sulfide and other sulfur compounds (e.g., thiophenes, mercaptans, and organic sulfides) that must be removed before transfer to commercial pipelines. Pipeline-company contracts typically specify maximum allowable limits of impurities H2S and total sulfur compounds seldom exceed 0.023 and 0.46 g/m (1.0 and 20.0 gr/100 std ft ), respectively. The majority of pipeline companies responding to a 1994 survey limited H2S to less than 0.007 g/m (0.3 gr/100 std ft ), but a slightly smaller number continued specifying 0.023 g/m, in accord with an American Gas Association 1971 recommendation. 

Although no ASTM ferrous metal corrosion specification exists now for gasoline, diesel fuel, and other fuels, many refiners and marketers have adopted the National Association of Corrosion Engineers (NACE) Corrosion Standard Method TM-01-72-93 as a specification. This method has also been utilized by most product pipeline companies and is an established requirement. The NACE corrosion method is summarized as follows ... 

The NACE corrosion scale is a visual rating of surface rusting from 0% to 100%. Most refiners, product pipeline companies, and marketers of fuel require an NACE surface rust rating of 5% or less. The NACE corrosion rating scale is outlined in TABLE 7-1. 

Diesel-water emulsions are not approved for shipment by finished product pipeline companies. Consequently, the emulsion must be made on-site or near the point of sale. Other issues currently being resolved deal with improving the cold-temperature handling properties of the high-water-content fuel and improving the long-term storage stability of fuel blends... 

Williams Brothers Pipeline Company. 1982. Williams Brothers fuel oil stability test. 

How many customers have accepted the new business model till now three pipeline companies ... 

In building very long pipelines, the pipeline company usually employs several construction contractors The total length of line is divided into a number of sections with separate equipment and crews. Usually, each crew works oil nol more than 100 miles (161 kilumeiers). By partitioning the construction task, the entire operation can be speeded up, particularly important in areas where freezing temperatures or rain and mud may interfere with the work. 

The largest additional supply of natural gas for peak demands comes from underground storage reservoirs located, for example, close to the northern cities, as compared with the producing wells which may be located in the southwestern area of the country. Some of the storage pools are operated by pipeline companies, but most of the gas in underground storage is owned hy the local gas companies that serve metropolitan areas. 

Transmission on Gas transport Upstream investor Pipeline company in... 

Transmission in downstream country Gas transport agreement Multiple parties Pipeline company in country B... 

Town, village or county construction/maintenance projects. Utilities, railroads, pipeline companies, canals. 

Tank Farm An installation used by gathering and trunk pipeline companies, crude oil producers and terminal operators to store crude oil. 

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