Senior/Junior Meter Run & Custody Transfer Meter Run

[hahoo]

Hi

Can any one explain me what is the diffence between Senior/Junior Meter Run & Custody Transfer Meter Run".

how they are different in assembly(component) or function wise

Thanks

 

[Ashereng]

Senior and junior meter runs are separate from a custody transfer meter run. That is, a senior may or may not be a custody meter run. Same with junior.

A custody meter run is a meter run that you use to change custody (usually related to money). They are usually under strict "control" and are regularly checked by the applicable authority.

A senior meter run allows you to change plates under full line pressure.

Check out this link:

http://www.emersonprocess.com/daniel/products/gas/orifice/productlevel2.htm

"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

 

[dcasto]

Specifications are either ISO or API. The API specification are the holding for all the special reports on measurement including AGA, GPA, and others. ISO and API were going to "harmonize" but each group has elected to go their own way.

ISO 5167 Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full
ISO 5167-1 Part 1: General principles and requirements
ISO 5167-2 Part 2: Orifice plates
ISO 5167-3 Part 3: Nozzles and Venturi nozzles
ISO 5167-4 Part 4: Venturi tubes

MPMS Ch1: Definitions and Terms
MPMS Ch2.2A&B: Tank Calibration
STD 2555: Liquid Calibration of Tanks
RP 2556: Correcting Gauge Tables
MPMS Ch3.1A&B: Tank Gauging
MPMS Ch4.1, 4.2, 4.3, 4.5, 4.6, 4.7, 4.8: Proving Systems
MPMS Ch5.1, 5.2, 5.3, 5.4, 5.5: Metering
MPMS Ch6.1, 6.5, 6.7: Metering Assemblies
MPMS Ch7 Temperature Determination
MPMS Ch8.1, 8.2, 8.3, 8.4: Sampling
MPMS Ch9.1, 9.3: Density Determination
MPMS Ch10.1, 10.2, 10.3, 10.4, 10.7, 10.8, 10.9: Sediment and Water
MPMS Ch11.1 (Vols. I, IV, VII): Physical Properties Data
MPMS Ch11.2.1/M, 11.2.2/ADD/M, 11.2.3/M: Compressibility Factors
MPMS Ch12.1.1, 12.2, 12.2.1, 12.2.2, 12.2.3, 12.2.4, 12.3: Calculation of Petroleum Quantities
MPMS Ch14.1, 14.3.1, 14.3.2, 14.3.3, 14.3.4, 14.4, 14.5, 14.6, 14.7, 14.8: Natural Gas Fluids Measurement
MPMS Ch18.1: Custody Transfer
MPMS Ch19.1, 19.1D, 19.2, 19.3-A, B, C, E, F, G, H, 19.4: Evaporation Loss Measurement
MPMS Ch20.1: Allocation Measurement of Oil and Natural Gas
MPMS Ch21.1, 21.2: Flow Measurement Using Electronic Metering Systems

 

[zdas04]

From the depths of antiquity:
- Senior Fitting: Dual chamber fitting from Daniel (now Emerson) that allows plate inspection without blowing meter run down.
- Junior Fitting: Single chamber from Daniel fitting with a gear rack to jack the plate holder out of the fitting (but the run must be blown down prior to removing it). Generally only available in larger sizes.
- Simplex fitting: Junior fitting without the gear rack and available in all sizes.

Note that many companies now make a dual-chamber and simplex fitting (Daniel never made very many junior fittings and I don't think that anyone copied that design), but the term "Senior" is a registered trademark of Daniel (see

http://www.emersonprocess.com/danie...niorModel2000/Ds_sheets/SOFModel2000_DS.pdf).

Any of the three of these can be built to the reference standards that dcasto referenced and if so they can be used for custody transfer.

David Simpson, PE
MuleShoe Engineering

http://www.muleshoe-eng.com

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

The harder I work, the luckier I seem