ISO 12133:2021 小型船—一酸化炭素（CO）検出システムとアラーム | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 188, Small craft.

This second edition cancels and replaces the first edition (ISO 12133:2011), which has been technically revised.

The main changes compared to the previous edition are as follows:

• Clause 2 and throughout the text, dates to normative references have been added;
• Clause 3, definitions have been updated;
• 5.1.5, a low battery alarm requirement has been added;
• 5.2.3, design operating temperature range, has been added;
• requirements have been clarified in 5.3.2;
• 5.3.3 has been updated to require CO detectors without self-contained batteries to be connected to the continuously energized side of the battery switch;
• 6.3, marking requirements have been added;
• Figure 1 (beta curve chart) the 30 ppm line reference has been updated;
• Figure 1, the Key has been updated;
• Annex A, the other factors during boat operation that can affect carbon monoxide concentration have been clarified;
• EN 50291 has been moved to the Bibliography.

1 Scope

This document specifies requirements for the design, construction and installation of carbon monoxide detection and alarm systems in small craft.

Annex A provides essential educational material about carbon monoxide relative to small craft, and recreational boating recommendations.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

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