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ISO/PRF 21154

Ships and marine technology — Boil-off-rate measurement method for cargo containment system of LNG ships

General information

Current stage: 50.00 Effective date: Feb 24, 2026

Originator: ISO

Owner: ISO/TC 8/SC 25

Type: International Standard

ICS: 47.020.85

Scope

This document specifies the principle, condition, equipment, process, data acquisition and processing and test report of BOR(Boil-off-Rate) test. It is applicable to the CCS(Cargo Containment System) of LNG carrier,LNG FSRU, LNG bunkering vessel and also for the CCS of LNG fuel ships.

Life cycle

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IN_DEVELOPMENT
ISO/PRF 21154
50.00 Final text received or FDIS registered for formal approval
Feb 24, 2026