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GB/T 45484-2025Ships and marine technology - Bunker fuel mass flow meters on receiving vessel - Requirements (English PDF)

船舶与海上技术接收船上加注燃料质量流量计要求

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 28, 2025

Implementation date

July 1, 2025

Scope

GB/T 45484-2025 is the English-translated version of 船舶与海上技术接收船上加注燃料质量流量计要求.

GB/T 45484-2025 is the Chinese national standard setting what a Coriolis mass flow meter system must satisfy when it is fitted on the ship receiving bunker fuel to measure what comes aboard.

It covers the design of the system and its environmental testing, the metrological and safety requirements, the selection and installation of the meter, the verification of the assembled system and the measurement procedure, the system being the meter with its accessories, the pipe run from the ship's fuel main and the seals.

Informative annexes show a gravimetric laboratory calibration rig, the layout of such a system on a receiving ship and the checklist to be filled in. It does not cover transfer meters, which stay with ISO 22192, the bunkering and delivery installation as a whole, or cryogenic fuels such as LNG.

Identical to ISO 21562:2020, it was issued on 28 March 2025 and applies from 1 July 2025.

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Document preview — GB/T 45484-2025

National Standard of the People's Republic of China

ICS: 47.020.20
Classification: U 47

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbols and abbreviations
5 Design and environmental testing
6 Measurement requirements
7 Safety requirements
8 MFM selection and installation requirements
9 MFM system verification
10 Measurement Procedure
Appendix A (Informative) Example of Coriolis MFM Laboratory Calibration Facility - Gravimetric (Weighing) Method
Appendix B (Informative) Schematic diagram of MFM system on receiving ship
Appendix C (Informative) Required Checklist Information
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is equivalent to ISO 21562:2020 "Requirements for fuel mass flow meters for receiving ships for bunkering in ships and offshore technology".

1 Scope

This document specifies the requirements for Coriolis Mass Flow Meters (MFM) systems installed on board ships for measuring the flow of incoming fuel.

This document specifies the metrological, safety and testing requirements for the MFM system on the receiving ship. This document is a revision of ISO 8217, ISO 22192 and OIMLR117. Replenish.

This document does not apply to mass flow meters for fuel transfer, nor to the entire bunkering operation, such as the bunkering system as a whole and the delivery system.

This document does not apply to cryogenic fuels such as liquefied natural gas.

For Coriolis mass flow meter systems used in fuel transfer, refer to ISO 22192.

2 Normative references

This document has no normative references.

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Filling the bunker

Refilling bunker fuel Class F fuel oil provided for ship propulsion and/or operation.

Note: For the specifications of Class F fuel oil, see ISO 8217.

3.2 Mass flow meter mass flow meter; MFM

Equipment used to directly measure and display the quality of fuel oil (3.1) being bunkered on board a ship.

3.3

The maximum stress to which a piping system component may be subjected based on materials and design calculations.

3.4 Maximum mass flow rate

Maximum measurement value of an MFM system (3.5) that meets the measurement accuracy requirements.

Note: The maximum value is generally determined based on the application.

3.5 MFMsystem

Fuel oil bunkering (3.1) metering system, comprising a mass flow meter (3.2) and its accessories, a connection between the ship's fuel tank main pipe and the mass flow meter Pipes and seals.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

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