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19:21 Jun 22, 2011
This question was closed without grading. Reason: Other
English to Russian translations [PRO] Tech/Engineering - Mechanics / Mech Engineering / Equipment manual
English term or phrase:fiscal and allocation metering.
Reference Class Pressure Transmitter: The model is ideal for fiscal and allocation metering.
Explanation: Examples of allocation metering include measuring oil movements between production units, measuring separator flows, and metering the movements of oil at jetty offtake and at loading points for tankers. Allocation also refers to the distribution of production from a number of wells in a particular field. http://www.oilflows.com/
Reference: Definitions of fiscal and allocation metering
Reference information: Source document:
"Glossary of Terms" by Oil & Gas CDCM/JI Methodology Workgroup of the World Bank Global Gas Flaring Reduction Partnership (GGFR)
(see link below)
"Sometimes referred to as custody transfer, it does not imply any standard of performance but applies to its service. Fiscal meters are used where there is a transfer of ownership of the product in the pipeline, and hence are linked to transfer of money. For this reason, the accuracy requirements tend to be high. Certain standards may be applied (e.g. American Petroleum Institute) to define the tolerable levels of uncertainty. The exact level of uncertainty acceptable in the fiscal metering system will be determined by the contract established for the sale or production license for the oil and/or gas. Levels of overall uncertainty of ±0.25% for dry gas can typically be required" (pp.18-19)
"Allocation metering is used to measure movements of oil & gas between different processes, i.e. for the purpose of surveillance and flow assurance. It is also used to detect blockages, leaks, etc that could be restricting flow in certain parts of a plant. Allocation metering systems can be fairly accurate, but are not usually to fiscal standards, typically with overall uncertainty in the range ±3 - 5% for dry gas. However, this could be as high as ±10 - 20% or more depending on levels of maintenance and calibration carried out" (p. 10)