ISO 6583:2024

Name: ISO 6583:2024 — Methanol as a fuel for marine applications — General requirements and specifications
SKU: ISO 6583:2024
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Methanol as a fuel for marine applications — General requirements and specifications

Название (английский):

ISO 6583:2024

Methanol as a fuel for marine applications — General requirements and specifications

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 15 ноября 2024 г.
Издание:: ISO IS 6583 edition 1 version 1
ICS:: 75.160.20

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Описание (английский):

This document defines the general requirements and specifications for methanol from all forms of production at the point of custody transfer, prior to any onboard required treatment, for use as fuel in marine diesel engines, fuel cells and other marine applications. The specifications in this document can also be applied to methanol used as fuel in land-based applications of the same or similar type as those used for marine purposes.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 6583:2024 - "Methanol as a fuel for marine applications - General requirements and specifications" defines quality, sampling and testing requirements for methanol supplied at the point of custody transfer for use as a marine fuel (diesel engines, fuel cells and other marine uses). The standard covers methanol from all forms of production and may also be applied to similar land-based uses. It was developed with input from shipowners, engine and fuel-cell designers, fuel suppliers, testing laboratories and classification societies.

Key topics and technical requirements

Scope and sampling

Specifies properties at the point of custody transfer.
Sampling best practice: glass sample bottles with UV‑resistant caps; minimise exposure to atmospheric moisture.

Methanol grades

Three grades: Marine Methanol Grade A (MMA), Grade B (MMB) and Grade C (MMC) with progressively wider tolerances.

Core characteristics and limits (when tested by the referenced methods)

Appearance: homogeneous, clear, free of suspended matter (IMPCA 003).
Density at 15 °C: typical pure methanol ≈ 796.1 kg/m3; Table limits - min 795.0 kg/m3 (all grades); max 797.0 kg/m3 (MMA/MMB), 798.0 kg/m3 (MMC) (ISO 12185).
Methanol mass fraction (dry basis): MMA/MMB ≥ 99.85%; MMC ≥ 99.70% (IMPCA 001).
Impurities (dry basis): MMA/MMB ≤ 0.15%; MMC ≤ 0.30% (IMPCA 001).
Ethanol: max 50 mg/kg (MMA/MMB), 150 mg/kg (MMC).
Acetone: max 30 mg/kg (all grades).
Total sulfur: max 0.5 mg/kg (MMA/MMB), 10 mg/kg (MMC) (ASTM D5453).
Water: max 0.100% mass (MMA/MMB), 0.500% (MMC) (ASTM E1064).
Distillation range (IBP–DP): max 1.0 °C for MMA/MMB; report IBP and DP (ASTM D1078). Distillation helps identify cross‑contamination.
Chloride: max 0.5 mg/kg (IMPCA 002); Acidity (as acetic acid): max 30 mg/kg (ASTM D1613).
Lubricity and particle count: to be agreed between buyer and seller (IP PM FK, IP PM FI); recommended in MMA for stricter machinery protection.

Testing and dispute resolution

Lists normative test methods (IMPCA, ISO, ASTM, IP). ISO 4259-2 applies for interpretation of precision where available.

Applications and users

Practical uses: marine diesel engines, marine fuel cells, auxiliary systems and similar land‑based installations.

Primary users: shipowners/operators, fuel suppliers, methanol producers, engine/fuel‑cell manufacturers, classification societies, fuel testing labs and regulators.

Benefits: consistent fuel quality, reduced engine damage risk, simplified contractual specifications and international trade.

ISO 6583:2024

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards and notes

Технические детали

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