Which applications are excluded from SAES-Y-301?

SAES-Y-104 excludes RTG systems for LPG service, asphalt transfers, transfers from or to ships, truck loading, and truck unloading. RTG usage for transfers from or to ships requires approval from the Chairman of the Custody Measurement Standards Committee.

What are the key aspects covered in SAES-Y-301?

SAES-Y-104 addresses various aspects related to RTG systems, including design considerations, construction requirements, installation guidelines, equipment selection, calibration procedures, safety measures, data acquisition and transmission, system accuracy, and documentation. It provides the necessary guidelines to ensure accurate and reliable measurement of hydrocarbon liquids during royalty/custody transfer using RTG systems.

Are there any specific regulations or standards referenced by SAES-Y-301?

SAES-Y-104 establishes the minimum mandatory requirements, but it may reference or incorporate other relevant codes, regulations, and standards. It is important to consult the specific edition of SAES-Y-104 and any referenced documents to ensure compliance with all applicable requirements.

Who should approve the usage of RTG systems for transfers from or to ships?

For the usage of RTG systems in transfers from or to ships, approval must be obtained from the Chairman of the Custody Measurement Standards Committee. This ensures that the RTG system meets the necessary standards and requirements for accurate measurement during ship transfers.

SAES-Y-301 PDF - Custody Measurement of Hydrocarbon Liquids using Radar Tank Gauging Systems - PDFYAR

This article is about SAES-Y-301 which is about Custody Measurement of Hydrocarbon Liquids using Radar Tank Gauging Systems and download SAES-Y-101 PDF for process and piping engineers, supervisors and project managers, Welding QCs, QC Supervisors. This is saudi aramco standards of Custody Metering Engineering based on international codes and standards and useful for piping and process engineering knowledge to get job as engineers, QC Supervisors and QC managers, Engineering managers and technicians.

SAES-Y-301 PDF Download

SAES-Y-301

Custody Measurement of Hydrocarbon Liquids using Radar Tank Gauging Systems

SAES-Y-301 is a standard that outlines the minimum mandatory requirements for the design, construction, and installation of Radar Tank Gauging (RTG) systems and equipment used for royalty/custody transfer measurement of hydrocarbon liquids. This standard specifically applies to RTG systems that are stilling well mounted in atmospheric upright cylindrical above-ground liquid storage tanks.

However, it’s important to note that this standard excludes RTG systems used for LPG service and asphalt transfers, as well as transfers involving ships, truck loading, and truck unloading. If there is a need to use RTG systems for transfers involving ships, it requires approval from the Chairman of the Custody Measurement Standards Committee.

General Requirements

The general requirements outlined in SAES-Y-301 for Radar Tank Gauging (RTG) systems are as follows:

5.1: This standard does not provide an exhaustive list of RTG instrumentation. For specific equipment requirements, refer to 34-SAMSS-321.

5.2: Tank measurement is not the preferred method compared to metering. However, RTG systems may be considered the optimal choice at certain locations, provided an economic analysis is conducted to demonstrate cost-effectiveness compared to dynamic measurements. If the economics of an RTG system cannot be justified, then a metering system should be installed following the requirements of SAES-Y-103.

5.3: Only RTG systems are approved for automatic tank level gauging and temperature measurement.

5.4: RTG systems should be sourced from Saudi Aramco approved vendors in accordance with SAES-Y-100.

5.5: SAPMT (Saudi Aramco Project Management Teams) holds the responsibility for ensuring that design and construction contractors deliver a fully operational RTG system that complies with the provisions of this standard and the approved project functional specifications.

Equipment Requirements

The equipment requirements for Radar Tank Gauge (RTG) systems in accordance with SAES-Y-301 are as follows:

6.1 Radar Tank Gauge Requirements:
6.1.1: The RTG system should be installed following the manufacturer’s recommendations and SAES-P-111.
6.1.2: The RTG system and its accessories should meet the accuracy, installation, factory calibration, initial and subsequent verification requirements of API MPMS 3.1B, SAES-J-003, and 34-SAMSS-321.
6.1.3: The RTG system should be capable of withstanding the operating and environmental conditions experienced in service. All exposed metal parts should have the same electrical potential as the tank.
6.1.4: The RTG system should be mounted on a properly supported, perforated stilling well. Roof-mounted RTG systems are not acceptable for custody transfer applications.
6.1.5: The RTG system should provide security sealing to prevent unauthorized tampering or adjustment.

Automatic Tank Thermometer (ATT) Requirements:
6.2.1: The ATT should conform to the requirements specified in SAES-J-400 and 34-SAMSS-321.
6.2.2: Consideration should be given to water bottoms or sludge deposits in tanks, and neither should be included in the measurement of the product’s average temperature.
6.2.3: ATTs should be installed at a distance of 900 mm from the tank shell and as far as possible from heating coils and swing arms. They should be placed on the opposite side of the tank from the inlet and outlet connections and away from tank mixers to minimize the effects of turbulence. ATTs should be accessible from the gauge platform.
6.2.4: For fixed-roof and floating-roof tanks, an averaging temperature measurement method is preferred as it provides greater accuracy.

Pressure Sensors:
Pressure sensors may be added for determining tank density for operational purposes, following API MPMS Chapter 3.6. However, the density values obtained from these sensors should not be used for custody transfer measurement. Pressure instrumentations should comply with the requirements of SAES-J-200.

Tank Requirements

FAQs about SAES-Y-301 PDF Download

What is the scope of SAES-Y-301?

SAES-Y-104 describes the minimum mandatory requirements for the design, construction, and installation of Radar Tank Gauging (RTG) systems and equipment used for royalty/custody transfer measurement of hydrocarbon liquids. It specifically applies to stilling well mounted RTG systems in atmospheric upright cylindrical, above ground, liquid storage tanks.
Which applications are excluded from SAES-Y-301?

SAES-Y-104 excludes RTG systems for LPG service, asphalt transfers, transfers from or to ships, truck loading, and truck unloading. RTG usage for transfers from or to ships requires approval from the Chairman of the Custody Measurement Standards Committee.
What are the key aspects covered in SAES-Y-301?

SAES-Y-104 addresses various aspects related to RTG systems, including design considerations, construction requirements, installation guidelines, equipment selection, calibration procedures, safety measures, data acquisition and transmission, system accuracy, and documentation. It provides the necessary guidelines to ensure accurate and reliable measurement of hydrocarbon liquids during royalty/custody transfer using RTG systems.
Are there any specific regulations or standards referenced by SAES-Y-301?

SAES-Y-104 establishes the minimum mandatory requirements, but it may reference or incorporate other relevant codes, regulations, and standards. It is important to consult the specific edition of SAES-Y-104 and any referenced documents to ensure compliance with all applicable requirements.
Who should approve the usage of RTG systems for transfers from or to ships?

For the usage of RTG systems in transfers from or to ships, approval must be obtained from the Chairman of the Custody Measurement Standards Committee. This ensures that the RTG system meets the necessary standards and requirements for accurate measurement during ship transfers.

SAES-Y-301 PDF – Custody Measurement of Hydrocarbon Liquids using Radar Tank Gauging Systems