ISO 29945:2016 冷蔵非石油ベースの液化ガス燃料—ジメチルエーテル（DME）—陸上ターミナルの手動サンプリング方法 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 28, Petroleum products and related products of synthetic or biological origin, Subcommittee SC 5, Measurement of refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels.

This second edition cancels and replaces the first edition (ISO 29945:2009), which has been technically revised.

Introduction

Measures for environmental protection are required on a global scale. In this context, various methods of achieving these aims have been independently studied or undertaken in many countries. One such project, the development of the use of dimethylether (DME) as a new form of energy, has been undertaken in several countries. The use of DME generates neither sulfur oxide nor any other particulate matter known to cause environmental pollution at the time of combustion.

Another benefit of the use of DME as a petroleum alternative is that it can be produced easily from natural gases, coals and biomasses with only slight additional development of the existing techniques of production, transportation, storage and consumption.

In international trade, especially bulk transportation by sea, DME is liquefied by either refrigeration or pressurization and transported using ocean-going DME tankers and/or LPG tankers. To detect qualitative deterioration of the DME that can take place during transportation or storage, the establishment of an International Standard, agreed to by all concerned nations and parties, is required.

This document specifies a method of manual sampling of DME liquefied by refrigeration for analysis to define and/or confirm adherence to contractual specifications.

1 Scope

This document specifies a manual sampling method for refrigerated liquefied DME at terminals in both loading and unloading ports along with precautions.

This document does not include recommendations for the location of a sampling point in a line or vessel.

This document is also applicable to the following cases, with necessary modifications:

• sampling of DME on board liquefied gas tankers where appropriate sampling apparatus is provided;
• sampling of other refrigerated, non-petroleum-based, liquefied gaseous fuels whose chemical and physical properties are similar to those of DME.

The detailed chemical and physical properties of DME differ from those of LPG, which suggests that DME requires precautions different from those of LPG. However, their basic properties are similar to each other and so general reference is made in this document to precautions for LPG that have been applied in many countries. Reference can also be made to the appropriate individual items in this document for precautions concerning the quality.

2 Normative references

There are no normative references in this document.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography