API 17.4.10:1994 pdf download.Manual of Petroleum Measurement Standards Chapter 17—Marine Measurement
17.4.3 Definitions
For the purposes of this standard, the following definitions apply. 17.4.3.1 clingage: cargo that adheres to all surfaces of the emptied portion of the tank other than bottom surfaces. 17.4.3.2 liquid volume: the measurable amount of ma- terial that is free flowing at the time of measurement. 17.4.3.3 multipoint gauging: the activity of measur- ing cargo in a vessel tank through two or more openings in the top of the tank. 17.4.3.4 nonliquid volume: the measurable amount of material that is not free flowing at the time of measurement. Nonliquid material may include any one or a combination of hydrocarbon waxes, water/oil emulsions, sediment, or solid- ified cargo. 17.4.3.5 on-board quantity (OBQ): the material pre- sent in a vesselÕs cargo tanks, void spaces, and pipelines be- fore the vessel is loaded. On-board quantity may include any combination of water, oil, slops, oil residue, oil/water emul- sion, and sediment. 17.4.3.6 remaining on board (ROB): the material re- maining in a vesselÕs cargo tanks, void spaces, and pipelines after the cargo is discharged. Remaining on board quantity may include any combination of water, oil, slops, oil residue, oil/water emulsion, and sediment. 17.4.3.7 sediment: solid materials including, but not limited to, sand, rust, and scale. 17.4.3.8 sludge: that element of the material in a shipÕs cargo tank that is essentially not free flowing. Sludge con- sists of hydrocarbon waxes and may contain water/oil emul- sions and sediment. The use of this term is not recommended. 17.4.3.9 wedge formula: a mathematical means to ap- proximate small quantities of measurable liquid and/or nonliquid material on board that is in a wedge configuration and does not touch all bulkheads of the vesselÕs tank. The formula is based on cargo compartment characteristics, ves- sel trim, and the depth of the material. 17.4.3.10 wedge table: a vesselÕs cargo tank volume table calculated on the wedge formula for use when cargo does not touch all bulkheads of the tanks. Wedge tables pre- clude the need for calculation by wedge formula at times of cargo transfer. 17.4.3.11 Other terms used in this standard are defined in API MPMS Chapter 1 or other API petroleum-measurement standards.
17.4.4 Safety and Health Considerations
Due consideration should be given to applicable safety procedures. Safety considerations should include, but are not limited to, potential electrostatic hazards, potential personnel exposure (and associated protective clothing and equipment requirements), and potential explosive and toxic hazards as- sociated with a cargo tankÕs atmosphere among others. The physical characteristics of the cargo and existing operational conditions should be evaluated, and applicable international, federal, state, and local regulations should be observed. Safety procedures designated by the employer, the vessel op- erator, and other concerned parties should also be observed. Internationally, the International Safety Guide for Oil Tankers and Terminals (ISGOTT) and appropriate Oil Com- panies International Marine Forum (OCIMF) and API pub- lications provide additional safety information and should be consulted. See Appendix A.
API 17.4.10:1994 pdf download
PS:Thank you for your support!
