EN 13938-6:2004

Explosives for civil uses - Propellants and rocket propellants - Part 6: Solid rocket propellants - Guide for the determination of integrity of inhibitor coatings

This European Standard provides a guide to non-destructive testing (NDT) methods used for checking the integrity of inhibitor coatings of solid rocket propellants.

Explosivstoffe für zivile Zwecke - Treibladungspulver und Raketentreibstoffe - Teil 6: Feste Raketentreibstoffe - Leitfaden zur Bestimmung der Integrität von Inhibitorbeschichtungen

Diese Europäische Norm gibt Leitlinien für zerstörungsfreie (ZfP-)Prüfverfahren zur Bestimmung der Integrität von Inhibitorbeschichtungen bei Raketenfesttreibstoffen.

Explosifs à usage civil - Propergol et blocs de propergol pour fusée - Partie 6: Bloc de propergol pour fusée - Guide de détermination de l'intégrité des revêtements inhibiteurs

Eksplozivi za civilno uporabo - Smodniki in raketna goriva - 6. del: Trdna raketna goriva – Vodilo za ugotavljanje ustreznosti inhibitorskih prevlek

General Information

• Status: Published
• Publication Date: 04-May-2004
• Withdrawal Date: 29-Nov-2004
• ICS: 71.100.30 - Explosives. Pyrotechnics and fireworks
• Technical Committee: CEN/TC 321 - Explosives for civil uses
• Drafting Committee: CEN/TC 321/WG 5 - Propellants
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Dec-2021
• Completion Date: 14-Apr-2025
• Directive: 2014/28/EU - Directive 2014/28/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market and supervision of explosives for civil uses
• Directive: 93/15/EEC - Council Directive 93/15/EEC of 5 April 1993 on the harmonization of the provisions relating to the placing on the market and supervision of explosives for civil uses
• Mandate: M/055 - Standardization mandate to CEN for explosives for civil uses
• Ref Project: SIST EN 13938-6:2004 - Explosives for civil uses - Propellants and rocket propellants - Part 6: Solid rocket propellants - Guide for the determination of integrity of inhibitor coatings

Overview

EN 13938-6:2004 - published by CEN - is a technical guide for assessing the integrity of inhibitor coatings on solid rocket propellants using non-destructive testing (NDT). It does not set pass/fail acceptance levels (these must be agreed between supplier and customer) but summarizes suitable NDT methods, terminology, procedure requirements and reporting practices for detecting defects that can compromise motor safety and performance.

Key topics

• Scope and purpose
  • Guide to NDT methods for detecting defects in inhibitor coatings of solid rocket propellant grains.
  • Emphasises that acceptable defect levels vary by product and must be contractually defined.
• Terms and definitions
  • Key defect types: lack of coating, crack, blister, debonding, and inclusion.
• Selection considerations
  • Factors influencing choice of NDT: minimum detectable defect size, propellant type, production vs. sample inspection, and inspection throughput.
• NDT methods and capabilities
  • Film radiography (X‑ray / isotopes) - detects blisters, debonding, some inclusions; requires radiation protection and multiple projection angles.
  • X‑ray radioscopy - real‑time imaging without film; similar detection capability; radiation safety required.
  • X‑ray tomography (CT) - 3D defect imaging; more costly; radiation safety required.
  • Ultrasonic testing - detects blisters and debonding; needs liquid/gel couplant; adaptable to in‑line inspection; no radiation protection required.
  • Infra‑red thermography - useful for debonding on uncased propellant units; easy to use; no radiation protection required.
  • Visual testing - identifies lack of coating, surface cracks and visible inclusions; may use magnification.
• Test reporting
  • Test reports must conform to EN ISO/IEC 17025 and include standard reference, product ID, agreed acceptance criteria, NDT procedure, records, and results.

Applications and users

This standard is intended for:

• Propellant manufacturers and quality assurance teams for production and acceptance inspections.
• Aerospace and defence contractors responsible for rocket motor safety and reliability.
• Independent testing laboratories performing contract NDT on solid rocket motors and grains.
• Regulatory bodies and procurement specialists defining inspection requirements in purchase agreements.

Keywords: EN 13938-6:2004, solid rocket propellants, inhibitor coatings, non-destructive testing, NDT methods, propellant inspection, X-ray, ultrasonic, thermography.

Related standards

Part of the EN 13938 series on propellants and rocket propellants. Related parts include:

• EN 13938-1 (Requirements)
• EN 13938-2 (Electrostatic resistance)
• EN 13938-3 (Deflagration to detonation transition)
• EN 13938-4 (Burning rate)
• EN 13938-5 (Voids and fissures)
• EN 13938-7 (Black powder properties)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Eksplozivi za civilno uporabo - Smodniki in raketna goriva - 6. del: Trdna raketna goriva – Vodilo za ugotavljanje ustreznosti inhibitorskih prevlekExplosivstoffe für zivile Zwecke - Treibladungspulver und Raketentreibstoffe - Teil 6: Feste Raketentreibstoffe - Leitfaden zur Bestimmung der Integrität von InhibitorbeschichtungenExplosifs a usage civil - Propergol et blocs de propergol pour fusée - Partie 6: Bloc de propergol pour fusée - Guide de détermination de l'intégrité des revetements inhibiteursExplosives for civil uses - Propellants and rocket propellants - Part 6: Solid rocket propellants - Guide for the determination of integrity of inhibitor coatings71.100.30Eksplozivi. PirotehnikaExplosives. PyrotechnicsICS:Ta slovenski standard je istoveten z:EN 13938-6:2004SIST EN 13938-6:2004en01-september-2004SIST EN 13938-6:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13938-6May 2004ICS 71.100.30English versionExplosives for civil uses - Propellants and rocket propellants -Part 6: Solid rocket propellants - Guide for the determination ofintegrity of inhibitor coatingsExplosifs à usage civil - Propergol et blocs de propergolpour fusée - Partie 6: Bloc de propergol pour fusée - Guidede détermination de l'intégrité des revêtements inhibiteursExplosivstoffe für zivile Zwecke - Treibladungspulver undRaketentreibstoffe - Teil 6: Feste Raketentreibstoffe -Leitfaden zur Bestimmung der Integrität vonInhibitorbeschichtungenThis European Standard was approved by CEN on 6 February 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13938-6:2004: ESIST EN 13938-6:2004

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spai
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