The purpose of this study was to identify and catalogue the specific design, construction, operation, and maintenance practices of operators of pipeline systems transporting highly volatile, toxic, or corrosive liquids. The primary method of information gathering was a questionnaire mailed to selected liquid pipeline companies. A literature survey was also conducted. Several liquid pipeline companies that responded to the questionnaire were subsequently contacted for additional information. Response to the questionnaire was good; 19 pipelines completed questionnaires describing 25 systems transporting liquefied petroleum gases (LPG) and 4 systems transporting anhydrous ammonia (NH3). It is concluded that the above situation is not necessarily unsatisfactory. While improvements are possible, the liquid pipeline companies appear to strive for a high level of integrity and reliability in all their pipelines, regardless of the commodity being transported.


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