BCG Configuration FAQs

Answers to common questions regarding Configuring Bulk Calculations – Gas (BCG) on your systems

Which conversion group should I use for my high pressure pipeline natural gas project?

For high pressure natural gas projects, an MQCI conversion group should be selected. A certified BCG consultant can access the Gas Measurement Cockpit (GMC) and will follow the PAIG Methodology in order to create a selection of template conversion groups. The correct choice then depends on the detailed calculation scenario requirements which you will discuss with the certified consultant.

Example:

Template selection of high pressure conversion groups for AGA Report NO. 8 / ISO 6976 calculations:

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Which conversion group should I use for my LNG project?

For LNG projects, an MQCI conversion group should be selected. A certified BCG consultant can access the Gas Measurement Cockpit (GMC) and will follow the PAIG Methodology in order to create a selection of template conversion groups. The correct choice then depends on the detailed calculation scenario requirements which you will discuss with the certified consultant.

Example:

Template selection of LNG conversion groups for detailed ISO 6578 LNG calculations:

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We enter pressure values for gas calculations. Are these values absolute or gauge pressure values?

QuantityWare BCS implementations for LPG/NGL, LNG and natural gas support both the data entry of absolute and gauge pressure values. The conversion group configuration can be made to support entry of either gauge or absolute pressure values – by adding dedicated MQCI pressure calculation functions to the conversion group function module sequence.

Read Note 000078 for additional details.

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I have set my quantity value UoM L15 and KG to be rounded to zero decimals, but it is not working. What can I do?

The UoM real rounding settings are considered for all MQCI conversion groups (where rounding function /QTYW/MQCI_ROUND_ALT_QUANTITY) is assigned:

Ensure that you are not using a SAP QCI conversion group – then you will have to write your specific ABAP rounding code in SAP QCI BAdI Implementations.

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What is the difference between a SAP QCI and an MQCI conversion group?

QuantityWare BCS delivers a template that contains two different types of conversion groups – SAP QCI conversion groups and MQCI conversion groups.

Both types utilize the proven SAP QCI interface to oil & gas business processes and thus integrate seamlessly into all processes.

SAP QCI conversion groups are limited in their functional extend and are typically used in legacy environments. MQCI conversion groups offer full functional calculation flexibility – supporting all available measurement standards.

For BCG LNG implementation projects, one should always consider MQCI conversion groups.

Read the working paper “SAP QCI in a nutshell”

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Does QuantityWare BCG support natural gas quantity conversions for wet gases?

QuantityWare BCG supports quantity conversions for dry natural gases including LNG, as well as NGL quantity conversions.

To a limited extend, wet energy transaction quantities and test heating value entry is supported. Read QuantityWare Note 000059 for all details.

For customer specific wet energy and wet heating value calculations, a customer specific remote consulting document, which includes ABAP function module examples for customer specific wet gas calculations can be provided.

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How can I extend the density and temperature range for my product?

I have a product which has a base density beyond the supported measurement standard range, is it possible to extend the calculation range?

If the algorithm defined in the measurement standards allows so, you simply extend the range for densities and temperatures by selecting the “Extend range of standard implementation” indicator in the conversion group details screen:

Read Annex D: Standard Range Limit Extensions in the BCP Supported Standards Manual for additional information.

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