API EI MPMS 19.5-2009 pdf download

API EI MPMS 19.5-2009 pdf download.Atmospheric hydrocarbon emissions from marine vessel transfer operations.
1 Scope This standard provides methods for estimating evaporative loss from marine vessel transfer operations. Specifically, this standard addresses: 1) loading stock into: a) ship or ocean barges, or b) shallow draft barges, and 2) loading ballast water into ship or ocean barges from which crude oil has been unloaded. The emission estimates are for uncontrolled loading operations and do not apply to operations using vapor balance or vapor control systems or ballasting of ships with segregated ballast tanks. This standard does not address evaporative loss for: 1) very large crude carriers (VLCCs) or ultra large crude carriers (ULCCs) (unless the saturation factor K S is determined); 2) marine vessels employing crude oil washing (see 3.3.1); 3) marine vessel transit loss; 4) loading ballast water into marine vessels that, prior to dockside unloading, held anything other than crude oil (unless the saturation factor K S is determined); or 5) unloading marine vessels. This standard supersedes API 2514A, Second Edition, September 1981, which is withdrawn. 2 References [1] American Petroleum Institute, Recommended Practice for Specification of Evaporative Losses, Manual of Petroleum Measurement Standards, Chapter 19, Section 4, Second Edition, September 2005 [2] American Petroleum Institute, Publication 2524, Impact Assessment of New Data on the Validity of American Petroleum Institute Marine Transfer Operation Emission Factors, July 1992 [3] American Petroleum Institute, Publication 2514A, Atmospheric Hydrocarbon Emissions from Marine Vessel Transfer Operations, Second Edition, September 1981
3 Terms and Definitions For the purposes of this document, the following definitions apply. 3.1 Marine Vessel Type 3.1.1 shallow draft barge Marine vessels with compartment depths of approximately 10 ft to 12 ft. 3.1.2 ship or ocean barge Marine vessels with compartment depths of approximately 40 ft. 3.2 Cargo Type 3.2.1 nonvolatile cargo Cargo with a true vapor pressure of 1.5 psia or less. Nonvolatile cargo includes fuel oils such as No. 2 fuel oil (diesel) and No. 6 fuel oil. 3.2.2 volatile cargo Cargo with a true vapor pressure greater than 1.5 psia. 3.3 Cargo Compartment Condition 3.3.1 Cargo Compartment Condition Prior to Loading 3.3.1.1 ballasted compartment An uncleaned compartment that has been loaded with ballast water.
3.3.1.2 cleaned compartment A compartment that has been water washed. 3.3.1.3 crude oil washing The use of a high pressure stream of crude oil or cutter stock, usually heated, to dislodge or dissolve clingage and sediments from bulkheads, compartment bottoms, and internal structures of a vessel during the discharge operation. [7] 3.3.1.4 gas-freed compartment A compartment that has been cleaned and air-blown, such that the compartment is suitable for entry and hot work such as welding. 3.3.1.5 uncleaned compartment A compartment that has had no treatment except routine heel washing (washing restricted to the lower part of the compartment). 3.3.2 Cargo Compartment Condition Prior to Dockside Crude Oil Unloading 3.3.2.1 fully-loaded compartment A compartment with a true ullage height of 5 ft or less prior to dockside crude oil unloading. 3.3.2.2 lightered or previously short-loaded compartment A compartment with a true ullage of more than 5 ft prior to dockside crude oil unloading. 3.4 Miscellaneous Terminology 3.4.1 lightered Partially unloaded before reaching the dock. 3.4.2 ullage The unfilled volume of a compartment.
5.1.2 Solution The volume loaded is 125,000 bbl (42 gal/bbl) = 5,250,000 gal. The average saturation factor for the compartments is (see Table 2): K S = 0.25(0.20) + 0.10(0.15) + 0.65(0.10) = 0.13 The loss from loading gasoline from Equation (2) is: L L lb/(1000 gal loaded) = 12.46 K S P VA M V /T V L L lb/(1000 gal loaded) = (12.46)(0.13)(7.0)(62)/(520) = 1.35 lb/(1000 gal loaded) and the total loss is: L L = 1.35 lb(5,250,000/1000) = 7100 lb 5.2 Loss from Loading Crude Oil 5.2.1 Parameters Marine vessel: ship. Prior cargo: crude oil. Compartment conditions prior to loading: 85 % uncleaned, 15 % cleaned. Temperature of the ullage: 60 °F = 520 °R. Crude oil: P VA = 2.0 at 60 °F (from API MPMS Ch. 19.4, Table 2, M V = 50 lb/lb-mole). Volume loaded: 180,000 bbl. 5.2.2 Solution The volume loaded is 180,000 bbl (42 gal/bbl) = 7,560,000 gal. The average saturation factor for the compartments is (see Table 2; the previous cargo was crude oil, which is considered volatile per the definition given in 3.2): K S = 0.85(0.20) + 0.15(0.10) = 0.185 The loss from loading crude oil from Equation (2) is: L L lb/(1000 gal loaded) = 12.46 K S P VA M V /T V L L lb/(1000 gal loaded) = 12.46 (0.185)(2.0)(50)/(520) = 0.443 lb/(1000 gal loaded) and the total loss is: L L = (0.443 lb)(7,560,000/1000) = 3350 lb