BS ISO 15859-3:2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Chemical composition
5 Procurement
6 Fluid sampling
7 Test methods
Annex A (informative) Gas chromatography (GC) and mass
                      spectrometer (MS) applications

Specifies limits for the composition of nitrogen and establishes the sampling and test requirements applicable for the verification of nitrogen composition.

This part of ISO15859 specifies limits for the composition of nitrogen and establishes the sampling and test requirements applicable for the verification of nitrogen composition.

This part of ISO15859 is applicable to nitrogen, used in both flight hardware and ground facilities, systems and equipment, of the following types and grades of nitrogen.

• TypeI: gaseous

  • GradeA: purging/pressurizing,

  • GradeB: crew breathing,

  • GradeC,

  • GradeF,

  • GradeJ;

• TypeII: liquid

  • GradeA: purging/pressurizing,

  • GradeB: crew breathing,

  • GradeC,

  • GradeF.

This part of ISO15859 is applicable to influents only within the specified limits herein.

This part of ISO15859 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.