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API MPMS 18.2 2016 pdf free download

API MPMS 18.2 2016 pdf free download.Manual of Petroleum Measurement Standards Chapter 18.2 Custody Transfer of Crude Oil from Lease Tanks Using Alternative Measurement Methods.
3 Terms and Definitions For the purposes of this document, the following definitions apply. NOTE See API MPMS Chapter 1, online Terms and Definitions Database, for additional terms and definitions applicable to this document. 3.1 crude oil lease tank A tank that is calibrated per API MPMS Chapter 2 standards that stores crude oil from producing leases waiting to be transported by a carrier. 3.2 crude oil truck driver COTD Assumes that the driver is also the gauger; however, it should be recognized that these duties may be divided between different individuals: a person who only drives the tank truck and a gauger or applicable representative who is responsible for measurement and testing. 3.3 linearized tank table LTT The linearized tank table value corresponding to the opening gauge measurement, closing gauge measurement, and free water gauge measurement. 3.4 merchantability A term applied to liquid hydrocarbons judged to be acceptable for custody transfer to a carrier. The oil is settled and contains no more than a set amount of suspended sediment and water (S&W) and other impurities. The amount of S&W or other impurities shall be agreed upon by both parties to have a mutual understanding of what is merchantable product.
4 Safety Safety is an essential part of crude oil trucking operations both on roadways and during custody transfer. API MPMS Chapter 18.1 was developed for applications where access to lease tanks to perform the associated measurement and quality tasks was not restricted and where the settling and weathering of crude oil prior to custody transfer was possible. There are many applications today where these conditions cannot be met. Opening thief hatches of storage tanks can lead to the rapid release of high concentrations of hydrocarbon gases and vapors. Be aware that those may result in very low oxygen levels and toxic and flammable conditions around and over the hatch. This standard was developed to encourage uniform, technically defensible measurement and testing practices for crude oil gathered from lease tanks when access to the tank’s thief hatch may be restricted. Safety is an essential part of crude oil trucking operations both on roadways and during custody transfer, so the crude oil truck driver (COTD) shall be thoroughly familiar with all government and company safety regulations as well as API Recommended Practice 2003, which outlines safety procedures that are important for truck transports. Refer to appropriate government regulations and publications, including the following: — OSHA 29 CFR 1910.106, Flammable and Combustible Liquids; — OSHA 29 CFR 1910.132, Personal Protective Equipment; — OSHA 29 CFR 1910.134, Respiratory Protection;— OSHA 29 CFR 1910.147, The Control of Hazardous Energy (Lockout/Tagout); — OSHA 29 CFR 1910.307, Hazardous (Classified) Locations; — OSHA 29 CFR 1910.1000, Air Contaminants; — OSHA 29 CFR 1910.1200, Hazard Communication; — OSHA Publication 3843, NIOSH-OSHA Hazard Alert, Health and Safety Risks for Workers Involved in Manual Tank Gauging and Sampling at Oil and Gas Extraction Sites. These references are provided for informational purposes only and do not provide legal advice on compliance with regulations. Where applicable, authorities having jurisdiction should be consulted. 5 Selection of Methods for Quantity and Quality Determinations Using Available Equipment in Zones As stated in the Scope of the document, this standard defines some of the equipment and methods used to determine the quantity and quality of oil being loaded from a lease tank to a truck trailer without requiring direct access to a lease tank gauge hatch. The methods and equipment that will be used are based on: a) establishing a list/matrix of all the existing and/or available equipment in the tank, trailer, and transition zones and understanding all the potential uncertainty and bias of the equipment; b) understanding and documenting the potential conditions that will exist during the loading of the product that may affect the equipment and process used to determine the quantity and quality of the product; c) assessing all the data to determine the capability of developing a measurement method or process that will provide the lowest uncertainty and minimize any bias to an acceptable level utilizing the available equipment in any combination of the three zones.

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