Voorbeeld. Preview ISO INTERNATIONAL STANDARD. Space systems Fluid characteristics Part 11: Ammonia

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1 INTERNATIONAL STANDARD ISO First edition Dit document mag slechts op een stand-alone PC worden geinstalleerd. Geruik op een netwerk is alleen. toestaan als een aanvullende licentieovereenkomst voor netwerkgeruik met NEN is afgesloten. This document may only e used on a stand-alone PC. Use in a network is only permitted when a supplementary license agreement for us in a network with NEN has een concluded. Space systems Fluid characteristics Part 11: Ammonia Systèmes spatiaux Caractéristiques des fluides Partie 11: Ammoniac A Reference numer ISO :1999(E)

2 ISO :1999(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards odies (ISO memer odies). The work of preparing International Standards is normally carried out through ISO technical committees. Each memer ody interested in a suject for which a technical committee has een estalished has the right to e represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaorates 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 3. Draft International Standards adopted y the technical committees are circulated to the memer odies for voting. Pulication as an International Standard requires approval y at least 75 % of the memer odies casting a vote. International Standard ISO was prepared y Technical Committee ISO/TC 20, Aircraft and space vehicles, Sucommittee SC 14, Space systems and operations. ISO consists of the following parts, under the general title Space systems Fluid characteristics: Part 1: Oxygen Part 2: Hydrogen propellant Part 3: Nitrogen Part 4: Helium Part 5: Nitrogen tetroxide propellant Part 6: Monomethylhydrazine propellant Part 7: Hydrazine propellant Part 8: Kerosene propellant Part 9: Argon Part 10: Water Part 11: Ammonia Part 12: Caron dioxide Part 13: Breathing air ISO 1999 All rights reserved. Unless otherwise specified, no part of this pulication may e reproduced or utilized in any form or y any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the pulisher. International Organization for Standardization Case postale 56 CH-1211 Genève 20 Switzerland Internet iso@iso.ch Printed in Switzerland ii

3 INTERNATIONAL STANDARD ISO ISO :1999(E) Space systems Fluid characteristics Part 11: Ammonia 1 Scope This part of ISO specifies limits for the composition of ammonia (NH 3 ) intended as a coolant and used in the servicing of space systems, and test methods for verification of its composition. This part of ISO is applicale to ammonia used in oth flight hardware and ground servicing, systems, and equipment. It is applicale to influents only to the extent specified herein. 2 Term and definition For the purposes of this part of ISO 14951, the following term and definition apply. 2.1 indirect method method of measuring fluid purity y indirect means, that is, measuring the aggregate impurities, as a volume percent or percent y weight and sutracting it from Composition The composition of ammonia delivered to the flight vehicle interface shall e in accordance with the limits given in Tale 1 when tested in accordance with the applicale test methods. 4 Test methods 4.1 Sampling The ammonia should e selected in accordance with a sampling plan that will produce results with sensitivities and accuracies equivalent to or etter than those required to meet the programme or project requirements. 4.2 Composition tests The composition of the ammonia shall e tested y such methods, apparatus, or analyzers as may e required to produce results with the sensitivities and accuracies necessary to meet programme or project requirements. 1

4 ISO :1999(E) ISO Tale 1 Composition limits Composition Limit Purity a mass fraction, %, min. 99,98 Moisture µg/g, max. 50 Oil µg/g, max. 6 Total nonvolatile residue Chlorides µg/g, max. 1 Fluorides a Determined y indirect method. Record and report only. 2

5 Bestelformulier Stuur naar: NEN Standards Products & Services t.a.v. afdeling Klantenservice Antwoordnummer WB Delft NEN Standards Products & Services Postus GB Delft Vlinderweg AX Delft Ja, ik estel ex. ISO :1999 en Ruimtevaartsystemen - Eigenschappen van vloeistoffen - Deel 11: Ammoniak T (015) F (015) Wilt u deze norm in PDF-formaat? Deze estelt u eenvoudig via Gratis nieuwsrieven Wilt u op de hoogte lijven van de laatste ontwikkelingen op het geied van normen, normalisatie en regelgeving? Neem dan een gratis aonnement op een van onze nieuwsrieven. Gegevens Bedrijf / Instelling T.a.v. O M O V Klantnummer NEN Uw ordernummer BTW nummer Postus / Adres Postcode Plaats Telefoon Fax Factuuradres (indien dit afwijkt van ovenstaand adres) Postus / Adres Postcode Plaats Datum Handtekening Retourneren Fax: klantenservice@nen.nl Post: NEN Standards Products & Services, t.a.v. afdeling Klantenservice Antwoordnummer 10214, 2600 WB Delft (geen postzegel nodig). Voorwaarden De prijzen zijn geldig tot 31 decemer 2018, tenzij anders aangegeven. Alle prijzen zijn excl. tw, verzend- en handelingskosten en onder voorehoud ij o.m. ISO- en IEC-normen. Bestelt u via de normshop een pdf, dan etaalt u geen handeling en verzendkosten. Meer informatie: telefoon , dagelijks van 8.30 tot uur. Wijzigingen en typefouten in teksten en prijsinformatie voorehouden. U kunt onze algemene voorwaarden terugvinden op: LEREN, WERKEN EN GROEIEN MET NEN preview