ISO 15859-12:2004 宇宙システム—流体特性、サンプリングおよび試験方法—パート12：二酸化炭素 | 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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 15859-12 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations.

ISO 15859 consists of the following parts, under the general title Space systems — Fluid characteristics, sampling test methods:

• Part 1: Oxygen
• Part 2: Hydrogen
• Part 3: Nitrogen
• Part 4: Helium
• Part 5: Nitrogen tetroxide propellants
• Part 6: Monomethylhydrazine propellant
• Part 7: Hydrazine propellant
• Part 8: Kerosine propellant
• Part 9: Argon
• Part 10: Water
• Part 11: Ammonia
• Part 12: Carbon dioxide
• Part 13: Breathing air

Introduction

Fluid operations at a spaceport or launch site may involve a number of operators and supplier/customer interfaces, from the fluid production plant to the delivery to the launch vehicle or spacecraft. The purpose of ISO 15859 is to establish uniform requirements for the components, sampling and test methods of fluids used in the servicing of launch vehicles, spacecraft and ground support equipment. The fluid composition limits specified are intended to define the purity and impurity limits of the fluid for loading into the launch vehicle or spacecraft. The fluid sampling and test methods are intended to be applied by any operator. The fluid sampling and test methods are acceptable methods for verification of the fluid composition limits.

1 Scope

This part of ISO 15859 specifies limits for the composition of carbon dioxide (CO₂) and establishes the sampling and test requirements applicable for the verification of the carbon dioxide composition.

This part of ISO 15859 is applicable to composition, sampling, and test methods for carbon dioxide intended for purging and pressurization in both space systems flight hardware and ground support facilities, systems, and equipment. This part of ISO 15859 may be applied to carbon dioxide influents. Carbon dioxide may be of the gaseous or liquid type.

This part of ISO 15859 is applicable to any sampling operation required to ensure that, when the fluid enters the launch vehicle or spacecraft, the fluid composition complies with the limits provided hereafter or with any technical specification agreed to for a particular use.

2 Normative references

The following referenced documents are indispensable for the application 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 terms and definitions given in ISO 9000 and the following apply.