CUSTODY TRANSFER SYSTEMS FOR LNG-SHIPS: TANK SURVEY TECHNIQUES AND SOUNDING TABLES
Static measurements of liquefied natural gas (LNG) for custody transfer purposes require an accurate and precise knowledge of the container volume and the volume-height relationship. The extremely low temperatures of LNG (less than 150K) preclude in situ surveys; however, the increasing value of the cargo requires more precise and accurate measurements than previously used for bulk marine cargoes. A description and assessment of the application of photogrammetric techniques to the ambient temperature survey of a 35-meter diameter spherical aluminum container are presented. Sample sounding tables (height-volume) are calculated, and an estimate of error is given.
- Sponsored in part by Maritime Administration, Washington, DC.
National Engineering LaboratoryCenter for Applied Mathematics
Gaithersburg, MD USA 20760
Maritime Administration1200 New Jersey Avenue, SE
Washington, DC USA 20590
- Jackson, RHF
- Collier, R S
- Haber, S
- Tryon, P V
- Publication Date: 1979-5
- Pagination: 84 p.
- TRT Terms: Calibration; Cryogenic materials; Cryogenics; Custody; Gas analysis; Liquefied natural gas; Mathematical models; Measurement; Photogrammetry; Storage facilities; Storage tanks; Tables (Data); Tankers; Volume
- Old TRIS Terms: Analytical photogrammetry; Cryogenic materials storage; Custody transfer; Lng metering; Tank gaging; Tank instrumentation; Tanker ships
- Subject Areas: Freight Transportation; Marine Transportation; Terminals and Facilities;
- Accession Number: 00198646
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NBSIR-79/1751
- Files: TRIS, USDOT
- Created Date: Oct 17 1979 12:00AM