SIST EN 14035-38:2006
(Main)Fireworks - Part 38: Shot tubes - Specification and test methods
Fireworks - Part 38: Shot tubes - Specification and test methods
This European Standard specifies requirements for the construction, performance, primary packaging and labelling of shot tubes and the corresponding test methods. It is applicable to fireworks which are classified as shot tubes in categories 2 and 3 in EN 14035-2.
It is not applicable to shot tubes containing pyrotechnic composition which includes any of the following substances:
— arsenic or arsenic compounds;
— mixtures containing a mass fraction of chlorates greater than 80 %;
— mixtures of chlorates with metals;
— mixtures of chlorates with red phosphorus;
— mixtures of chlorates with potassium hexacyanoferrate(II);
— mixtures of chlorates with sulfur;
— mixtures of chlorates with sulfides;
— lead or lead compounds;
— mercury compounds;
— white phosphorus;
— picrates or picric acid;
— potassium chlorate with a mass fraction of bromates greater than 0,15 %;
— sulfur with an acidity, expressed as mass fraction of sulfuric acid, greater than 0,002 %;
— zirconium with a particle size of less than 40 mm.
NOTE In EN 14035-2, shot tubes are classified as follows:
— brief description: tube containing propellant charge and a pyrotechnic unit, with or without a transmitting fuse;
— principal effects: ejection of the pyrotechnic unit, producing a visual and/or aural effect in the air.
Schemes for type testing of shot tubes and batch testing of shot tubes are specified in Annex A and Annex B respectively.
Feuerwerkskörper - Teil 38: Feuerwerksrohre - Anforderungen und Prüfverfahren
Artifices de divertissement - Partie 38: Chandelles monocoup - Spécifications et méthodes d'essai
Le présent document spécifie les exigences de construction, de performances, d'emballage primaire et d’étiquetage des chandelles monocoup, ainsi que les méthodes d’essai correspondantes. Elle s’applique aux artifices de divertissement classés sous le nom de chandelles monocoup de catégories 2 et 3 dans l'EN 14035-2.
Elle ne s’applique pas aux chandelles monocoup dont la composition pyrotechnique comprend l’une des substances suivantes :
- arsenic ou composés d'arsenic ;
- mélanges contenant une fraction en masse de chlorates supérieure a 80 % ;
- mélanges de chlorates et de métaux ;
- mélanges de chlorates et de phosphore rouge ;
- mélanges de chlorates et d'hexacyanoferrate (II) de potassium ;
- mélanges de chlorates et de soufre ;
- mélanges de chlorates et de sulfures ;
- plomb ou composés de plomb ;
- composés de mercure ;
- phosphore blanc ;
- picrates ou acide picrique ;
- chlorate de potassium contenant une fraction en masse de bromates supérieure a 0,15 % ;
- soufre présentant une acidité, exprimée en fraction de masse d’acide sulfurique, supérieure a 0,002 % ;
- zirconium ayant une taille de particule inférieure a 40 mm.
NOTE Dans l’EN 14035-2, les chandelles monocoup sont classées comme suit :
- breve description : tube contenant une charge propulsive et un composant élémentaire, avec ou sans relais pyrotechnique ;
- effets principaux : éjection du composant élémentaire, produisant dans l’air un effet visuel et/ou sonore.
Les schémas d'essais de type et d'essais de lot des chandelles monocoup sont respectivement spécifiés aux Annexes A et B.
Ognjemet - 38. del: Tulci, enostrelni - Specifikacija in preskusne metode
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fireworks - Part 38: Shot tubes - Specification and test methodsOgnjemet - 38. del: Tulci, enostrelni - Specifikacija in preskusne metodeArtifices de divertissement - Partie 38: Chandelles monocoup - Spécifications et méthodes d'essaiFeuerwerkskörper - Teil 38: Feuerwerksrohre - Anforderungen und PrüfverfahrenTa slovenski standard je istoveten z:EN 14035-38:2006SIST EN 14035-38:2006en,fr,de71.100.30ICS:SLOVENSKI
STANDARDSIST EN 14035-38:200601-maj-2006
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14035-38February 2006ICS 71.100.30 English VersionFireworks - Part 38: Shot tubes - Specification and test methodsArtifices de divertissement - Partie 38: Chandellesmonocoup - Spécifications et méthodes d'essaiFeuerwerkskörper - Teil 38: Feuerwerksrohre -Anforderungen und PrüfverfahrenThis European Standard was approved by CEN on 30 December 2005.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, Romania,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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14035-38:2006: E
EN 14035-38:2006 (E) 2 Contents Page Foreword.3 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 Construction.6 5 Performance.8 6 Primary pack or selection pack.9 7 Minimum labelling requirements.9 8 Test methods.12 Annex A (normative)
Type testing.20 Annex B (normative)
Batch testing.29 Annex C (normative)
Method for determination of smouldering rate of cigarette.33 Annex D (informative)
A-Deviations.34
EN 14035-38:2006 (E) 3 Foreword This European Standard (EN 14035-38:2006) has been prepared by Technical Committee CEN/TC 212 “Fireworks”, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. This standard is one of a series of standards as listed below. EN 14035-1, Fireworks - Part 1: Terminology EN 14035-2, Fireworks - Part 2: Categorisation EN 14035-3, Fireworks - Part 3: Aerial wheels - Specification and test methods EN 14035-4, Fireworks - Part 4: Bangers and banger batteries - Specification and test methods EN 14035-5, Fireworks - Part 5: Batteries and combinations - Specification and test methods EN 14035-6, Fireworks - Part 6: Bengal flames - Specification and test methods EN 14035-7, Fireworks - Part 7: Bengal matches - Specification and test methods EN 14035-8, Fireworks - Part 8: Bengal sticks - Specification and test methods EN 14035-9, Fireworks - Part 9: Crackling granules - Specification and test methods EN 14035-10, Fireworks - Part 10: Double bangers - Specification and test methods EN 14035-12, Fireworks - Part 12: Flash bangers and flash banger batteries - Specification and test methods EN 14035-13, Fireworks - Part 13: Flash pellets - Specification and test methods EN 14035-15, Fireworks - Part 15: Fountains - Specification and test methods EN 14035-17, Fireworks - Part 17: Ground spinners - Specification and test methods EN 14035-18, Fireworks - Part 18: Hand-held fountains - Specification and test methods EN 14035-19, Fireworks - Part 19: Hand-held sparklers - Specification and test methods EN 14035-20, Fireworks - Part 20: Jumping crackers - Specification and test methods EN 14035-21, Fireworks - Part 21: Jumping ground spinners - Specification and test methods EN 14035-22, Fireworks - Part 22: Mines - Specification and test methods EN 14035-23, Fireworks - Part 23: Non-hand-held sparklers - Specification and test methods EN 14035-24, Fireworks - Part 24: Novelty matches - Specification and test methods
EN 14035-38:2006 (E) 4 EN 14035-25, Fireworks - Part 25: Party poppers - Specification and test methods EN 14035-27, Fireworks - Part 27: Rockets - Specification and test methods EN 14035-28, Fireworks - Part 28: Roman candles - Specification and test methods EN 14035-29, Fireworks - Part 29: Serpents - Specification and test methods EN 14035-31, Fireworks - Part 31: Shell–in-mortars - Specification and test methods EN 14035-33, Fireworks - Part 33: Spinners - Specification and test methods EN 14035-34, Fireworks - Part 34: Table bombs - Specification and test methods EN 14035-35, Fireworks - Part 35: Throwdowns - Specification and test methods EN 14035-36, Fireworks - Part 36: Wheels - Specification and test methods EN 14035-38, Fireworks - Part 38: Shot tubes - Specification and test methods According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 14035-38:2006 (E) 5 1 Scope This European Standard specifies requirements for the construction, performance, primary packaging and labelling of shot tubes and the corresponding test methods. It is applicable to fireworks which are classified as shot tubes in categories 2 and 3 in EN 14035-2. It is not applicable to shot tubes containing pyrotechnic composition which includes any of the following substances: — arsenic or arsenic compounds; — mixtures containing a mass fraction of chlorates greater than 80 %; — mixtures of chlorates with metals; — mixtures of chlorates with red phosphorus; — mixtures of chlorates with potassium hexacyanoferrate(II); — mixtures of chlorates with sulfur; — mixtures of chlorates with sulfides; — lead or lead compounds; — mercury compounds; — white phosphorus; — picrates or picric acid; — potassium chlorate with a mass fraction of bromates greater than 0,15 %; — sulfur with an acidity, expressed as mass fraction of sulfuric acid, greater than 0,002 %; — zirconium with a particle size of less than 40 µm. NOTE In EN 14035-2, shot tubes are classified as follows: — brief description: tube containing propellant charge and a pyrotechnic unit, with or without a transmitting fuse; — principal effects: ejection of the pyrotechnic unit, producing a visual and/or aural effect in the air. Schemes for type testing of shot tubes and batch testing of shot tubes are specified in Annex A and Annex B respectively. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14035-1:2003, Fireworks — Part 1: Terminology EN 14035-2, Fireworks — Part 2: Categorisation
EN 14035-38:2006 (E) 6 EN 61672-1, Electroacoustics — Sound level meters — Part 1:
Specifications (IEC 61672-1:2002) EN 61672-2, Electroacoustics — Sound level meters — Part 2: Pattern evaluation tests (IEC 61672-2:2003) EN ISO 845, Cellular plastics and rubbers — Determination of apparent (bulk) density (ISO 845:1988) EN ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:2003) EN ISO 2439, Flexible cellular polymeric materials — Determination of hardness (indentation technique) (ISO 2439:1997, including Technical Corrigendum 1:1998) ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 3599, Vernier callipers reading to 0,1 and 0,05 mm 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 14035-1:2003 apply. 4 Construction 4.1 Means of ignition The means of ignition shall be identified by a protruding fuse. Conformity to this requirement shall be verified by visual examination. 4.2 Attachment of initial fuse The attachment of the protruding fuse to the shot tube shall be secure when tested in accordance with 8.1. 4.3 Protection of initial fuse 4.3.1 General The initial fuse shall be protected in one of the ways specified in 4.3.2, 4.3.3 or 4.3.4. 4.3.2 Initial fuse protected by fuse cover An orange fuse cover shall be in place over the initial fuse. Conformity to this requirement shall be verified by visual examination. 4.3.3 Initial fuse protected by primary pack or selection pack The shot tube shall be contained in a primary pack or selection pack conforming to Clause 6. Conformity to this requirement shall be verified by visual examination. 4.3.4 Protruding fuse designed to resist side ignition When tested in accordance with 8.6, the protruding fuse shall not ignite.
EN 14035-38:2006 (E) 7 4.4 Materials 4.4.1 Firework case The tube shall be made of paper, cardboard or plastics. If the end closures are separate components, they shall be made of clay or similar material, paper,cardboard or cellular plastics. The base and/or means of fixing shall be made of non-metallic material. Conformity to these requirements shall be verified by visual examination. 4.4.2 Pyrotechnic unit The case of the pyrotechnic unit, if any, shall be made of paper, cardboard or plastics. If the end closure(s), if any, is a (are) separate component(s), it (they) shall be made of clay or similar material, or of paper, cardboard or cellular plastics. Conformity to these requirements shall be verified by visual examination. 4.5 Integrity There shall be no holes, splits, dents or bulges in the tube. There shall be no holes or splits in the end closure(s). If the end closure(s) is a (are) separate component(s), it (they) shall be securely in place. If the base and/or means of fixing is a separate component, it shall be securely in place. Conformity to these requirements shall be verified by visual examination. 4.6 Net explosive content When determined in accordance with 8.5, a category 2 shot tube shall have a net explosive content of not more than 20,0 g. When determined in accordance with 8.5, a category 3 shot tube shall have a net explosive content of not more than 50,0 g. 4.7 Mass of report and/or bursting charge (if any) When determined in accordance with 8.5, the mass of the report and/or bursting charge in the pyrotechnic unit of a category 2 shot tube shall be not more than 5,0 g of black powder or 4,0 g of nitrate/metal-based report composition or 2,0 g of perchlorate/metal-based report composition. When determined in accordance with 8.5, the mass of the report and/or bursting charge in the pyrotechnic unit of a category 3 shot tube shall be not more than 10,0 g of black powder or 8,0 g of nitrate/metal-based report composition or 4,0 g of perchlorate/metal-based report composition. 4.8 Internal diameter When measured in accordance with 8.4, the inside diameter of a category 2 shot tube shall not exceed 20 mm. When measured in accordance with 8.4, the inside diameter of a category 3 shot tube shall not exceed 32 mm. 4.9 Vertical stability For shot tubes designed to be placed on the ground, the shot tube shall not fall over when tested in accordance with 8.2.
EN 14035-38:2006 (E) 8 5 Performance 5.1 Initial fuse When tested in accordance with 8.3, the initial fuse of a shot tube shall ignite within 10 s and the ignition shall be visible. For category 2 shot tubes, the duration of the initial fuse burning shall be 3,0 s to 8,0 s, when tested in accordance with 8.3. For category 3 shot tubes, the duration of the initial fuse burning shall be 5,0 s to 13,0 s, when tested in accordance with 8.3. 5.2 Principal effects When tested in accordance with 8.3, the principal effects of the shot tube, as given in EN 14035-2, shall be the ejection of the pyrotechnic unit producing a visual and/or aural effect in the air. 5.3 Functioning When tested in accordance with 8.3, the pyrotechnic unit of the shot tube shall be ejected and shall produce a visual and/or aural effect in the air. 5.4 Sound pressure level When tested in accordance with 8.3, a category 2 shot tube shall produce a maximum A-weighted impulse sound pressure level (LAImax) of not higher than 120 dB(AI) at a horizontal distance of 8,0 m from the testing point and at a height of 1,0 m above the ground. When tested in accordance with 8.3, a category 3 shot tube shall produce a maximum A-weighted impulse sound pressure level (LAImax) of not higher than 120 dB(AI) at a horizontal distance of 15,0 m from the testing point and at a height of 1,0 m above the ground. 5.5 Height of explosion and bursting (if applicable) When tested in accordance with 8.3, the pyrotechnic unit of a category 2 shot tube shall not explode or burst below a height of 8 m. When tested in accordance with 8.3, the pyrotechnic unit of a category 3 shot tube shall not explode or burst below a height of 20 m. 5.6 Burning matter When tested in accordance with 8.3, no burning or incandescent matter from a category 2 shot tube shall fall to the ground more than 6,0 m from the testing point. When tested in accordance with 8.3, no burning or incandescent matter from a category 3 shot tube shall fall to the ground more than 15,0 m from the testing point. When tested in accordance with 8.3, any flames caused by the functioning of the shot tube shall be extinguished within 60,0 s of the shot tube ceasing to function. 5.7 Stability When tested in accordance with 8.3, the shot tube shall remain upright whilst functioning.
EN 14035-38:2006 (E) 9 5.8 Integrity of the firework case after functioning When tested in accordance with 8.3 there shall be no additional holes or splits in the firework case. 6 Primary pack or selection pack If a primary pack or selection pack is required to protect the initial fuse(s) of the shot tube(s) (see 4.3.3), the pack shall completely enclose the shot tube(s) and there shall be no holes or splits in the pack, except those which are intended to enable the packaging to be opened and those which are otherwise technically necessary. Conformity to these requirements shall be verified by visual examination. 7 Minimum labelling requirements 7.1 General Shot tubes and their primary packs, if any, shall be marked with the information specified in 7.2 to 7.5 and, if relevant, 7.7 and/or 7.8. The specified information shall be given in the language(s) of the country in which the shot tubes or primary packs are offered for retail sale. For each language, it shall be presented as a whole and shall not be interrupted by other text. Additional text given in another language shall not conflict with the specified information. Conformity to the requirements specified in 7.1 to 7.5, 7.6.1, 7.7.2 and 7.8 shall be verified by visual examination. NOTE Examples of typical labels for bangers, for which many of the marking requirements are similar to those specified for shot tubes in this European Standard, are given in EN 14035-4. 7.2 Type name and category The type name shall be marked, in upper case, as 'SHOT TUBE'. If a trade name is used in addition to the type name, it shall not conflict with the effect of a shot tube or with the name of another type of firework. The appropriate category shall be marked, in upper case, as 'CATEGORY 2' or 'CAT 2', for example. 7.3 Safety information 7.3.1 General Safety information shall be emphasized by use of a heading, or bold type, or similar. If necessary, instructions in addition to those specified in 7.3.2 to 7.3.4 may be given. 7.3.2 Category 2 shot tubes Labelling shall include at least the following safety information in the order as given: — 'For outdoor use only'; — 'Avoid overhead obstructions'; Specific placing instructions for different types of shot tubes, inserted as appropriate (see 7.3.4);
EN 14035-38:2006 (E) 10 — 'Remove orange fuse cover'1); — 'Standing sideways, light fuse at its outermost end and retire immediately at least 8 m'; 7.3.3 Category 3 shot tubes Labelling shall include at least the following safety information in the order as given: — 'For outdoor use only'; — 'Avoid overhead obstructions'; Specific placing instructions for different types of shot tubes, inserted as appropriate (see 7.3.4); — 'Remove orange fuse cover'1); — 'Standing sideways, light fuse at its outermost end and retire immediately; — 'Spectators must be at least 25 m away'; — 'Operator must retire at least 15 m'. 7.3.4 Placing instructions For shot tubes to be placed on flat ground: — 'Place shot tube upright on flat ground'. For shot tubes to be buried into soft ground: — 'Bury two-thirds of shot tube upright in ground'. For shot tubes to be inserted in soft ground: — 'Insert shot tube upright in soft ground or other non-flammable material, e.g. sand'; — 'Ensure shot tube will not fall over'. For shot tubes to be fixed to a post: — 'Fix shot tube firmly and upright to a solid post'; — 'Ensure top of shot tube clears post'. For shot tubes supplied with a special holding device, or for which particular instructions are necessary, the manufacturer, distributor or importer shall provide appropriate instructions.
1) If applicable.
EN 14035-38:2006 (E) 11
7.4 Name, address and telephone number of manufacturer or distributor or importer Labelling shall include: — name or trade mark, the address and the telephone number of the manufacturer; or — an abbreviation or a code allowing the identification of the manufacturer, and the name or trade mark, the address and the telephone number: — of his authorized distributor; or — if the manufacturer is not established in a CEN member country, of the importer in a CEN member country. The address shall comprise at least the town and the country. On the shot tube at least the abbreviations allowing the identification of — the manufacturer; or — the distributor or importer. An additional code or abbreviation for the manufacturer shall be marked. 7.5 Reference to this European Standard A shot tube shall be marked with ‘EN 14035-38'. A primary pack shall be marked with the words 'Contents conform to EN 14035-38'. 7.6 Printing 7.6.1 Labelling Labelling shall be clearly visible, easily legible, indelible and on a single-colour background. NOTE Printing errors which are not misleading should not be classified as faults. 7.6.2 Type size When measured in accordance with 8.7, the type sizes shall be such that the height of the capital letter “X” (in upper case) is at least 2,8 mm for the information specified in 7.2, 7.3 and 7.8 and at least 2,1 mm for the other information. 7.7 Marking of very small shot tubes 7.7.1 Reduced size If the shot tube does not provide enough space for the specified information using the types sizes specified in 7.6.2, for the information specified in 7.2 and 7.3 the type size shall be reduced to 2,1 mm. 7.7.2 Reduced information If the shot tube does not provide enough space to carry all the specified information even in reduced type size, at least the information specified in 7.4 shall be given on the shot tube, if at all possible.
EN 14035-38:2006 (E) 12 7.8 Additional information on the primary pack (if applicable) If the shot tube is not labelled completely with the information specified in 7.2 to 7.5, or if the primary pack acts as protection of the initial fuses according to 4.3.3, the shot tube shall be sold only in a primary pack. The primary pack shall be marked with the statement 'Must be sold as packaged'. This statement shall appear adjacent to the type name or category. For the printing 7.6 applies. 8 Test methods NOTE Verification of conformity to the requirements in 4.1, 4.3.2 or 4.3.3, 4.4, 4.5, Clause 6, 7.1 to 7.5, 7.6.1, 7.7.2 and 7.8 is by visual examination. 8.1 Attachment of protruding fuse (type test and batch test) 8.1.1 Apparatus 8.1.1.1 Means of clamping the shot tube. 8.1.1.2 Weight, of mass 100 g. 8.1.1.3 Timing device, capable of being read to the nearest 0,1 s. 8.1.2 Procedure Clamp the shot tube by means of the clamping device (8.1.1.1) in a position such that the protruding fuse is pointing vertically downwards. Securely attach the 100 g weight (8.1.1.2) to the protruding fuse. Using the timing device (8.1.1.3), determine and record whether the protruding fuse will support the weight for at least 10 s without becoming detached. If the protruding fuse becomes detached, do not proceed with further testing of that shot tube. 8.2 Vertical stability test (type test) 8.2.1 Apparatus 8.2.1.1 Wooden block, rectangular, with an upper surface inclined at 10° to the horizontal. 8.2.1.2 Timing device, capable of being read to the nearest 0,1 s. 8.2.2 Procedure 8.2.2.1 Place the base of the shot tube on the inclined surface of the wooden block (8.2.1.1). For polygonal (triangular etc.) bases, align one edge of the base with the top edge of the wooden block. 8.2.2.2 Using the timing device (8.2.1.2), observe and record whether the shot tube falls over within 5 s. If it falls over discontinue the test. 8.2.2.3 Rotate the shot tube clockwise through 90° and repeat the observation described in 8.2.2.2.
EN 14035-38:2006 (E) 13 8.2.2.4 Repeat the operations described in 8.2.2.3 twice more (unless the shot tube falls over). 8.3 Performance (type test and batch test) 8.3.1 Test environment 8.3.1.1 Test area for category 2 shot tubes. The test area shall be an outdoor site, on level ground, with a radius of at least 9 m and a smooth, hard, horizontal, sound-reflecting, non-flammable surface (for example, concrete). If applicable, provisions shall be made at the centre of the test area for partially burying the shot tube to be tested. A circle, radius 6,0 m, shall be marked around the centre of the test area. One position for monitoring the height of explosion or bursting of the pyrotechnic unit shall be provided, at a measured distance of at least 8 m from the testing point (in the centre of the test area). 8.3.1.2 Test area for category 3 shot tubes. The test area shall be an outdoor site, on level ground, with a radius of at least 16 m and a smooth, hard, horizontal, sound-reflecting, non-flammable surface (for example, concrete). If applicable, provisions shall be made at the centre of the test area for partially burying the shot tube to be tested. A circle, radius 15,0 m, shall be marked around the centre of the test area. One position for monitoring the height of explosion or bursting of the pyrotechnic unit shall be provided, at a measured distance of at least 15 m from the testing point (in the centre of the test area). 8.3.1.3 Wind speed. A means of measuring the wind speed at a height of 1,5 m above the ground shall be provided. No performance testing shall be carried out if the wind speed exceeds 5,0 m/s. 8.3.2 Apparatus 8.3.2.1 Timing device, capable of displaying at least one intermediate time, capable of being read to the nearest 0,1 s. 8.3.2.2 Ignition source, capable of producing a small flame or of smouldering. 8.3.2.3 Sound level meter (for type testing only), conforming to Type 1 of EN 61672-1 and EN 61672-2, with a free-field microphone. 8.3.2.4 Means of monitoring the height of explosion and bursting of the pyrotechnic unit, capable of indicating vertical heights of 8 m above the ground for category 2 shot tubes and 20 m above the ground for category 3 shot tubes. NOTE 1 A suitable viewing screen is shown in Figure 1 and the principle of its use is shown in Figure 2. The same device is also illustrated in EN 14035-27 for monitoring the flight of rockets. NOTE 2 A vertical height of 8 m can be indicated by 8 m poles around the perimeter of the test area. Distance x is given, in millimetres, by the equation:
Where y is the distance, in m, from the viewing point to the testing point (see Figure 2). The observer is positioned so that the bottom edge of the triangle on the front screen coincides with the top of the shot tube and the bottom edge of the tape on the back screen coincides with the bottom edge of the horizontal tape on the front screen.
EN 14035-38:2006 (E) 14 Dimensions in millimetres
Key 1 acrylic glass 2 black tape, 10 mm to 20 mm wide 3 solid base 4 stand Figure 1 – Viewing screen
EN 14035-38:2006 (E) 15
Key 1 top of shot tube 2 sighting device 3 position of observer Figure 2 – Use of a viewing screen to monitor a height of 20 m 8.3.2.5 Measuring device, capable of measuring a height of 1,0 m to the nearest 10 mm. 8.3.3 Procedure 8.3.3.1 Measure and record the wind speed (see 8.3.1.3). 8.3.3.2 If carrying out a type test of shot tubes, set up the microphone of the sound level meter (8.3.2.3) in the test area (8.3.1.1 or 8.3.1.2), at a height of 1,0 m above the ground, determined by the measuring device (8.3.2.5), and at a horizontal distance from the testing point of 8,0 m for category 2 shot tubes or 15,0 m for category 3 shot tubes. Direct the microphone horizontally towards the testing point and, if necessary, connect it to the sound level meter. 8.3.3.3 Position the shot tube, in accordance with the instructions on the label, in the centre of the test area. Remove the orange fuse cover, if any, and straighten the initial fuse, if necessary. Apply the ignition source (8.3.2.2) and, at the same instant, start the timing device (8.3.2.1). Observe the intermediate time at the moment the initial fuse ignites. If the initial fuse fails to ignite within 10 s, record the fact and do not proceed with further testing of that shot tube. Otherwise, stop the timing device when the shot tube starts to produce its principal effects. Record whether the initial fuse ignited within 10 s and whether the ignition of the initial fuse was visible. 8.3.3.4 Record the duration of the initial fuse burning. Observe and record whether the pyrotechnic unit is ejected and whether it functions. After the shot tube has ceased to function start the timing device (8.3.2.1) immediately and record whether any flames caused by the functioning of the shot tube are extinguished within 60,0 s after the shot tube has ceased to function.
EN 14035-38:2006 (E) 16 Using the monitoring apparatus (8.3.2.4), observe and record whether the pyrotechnic unit of the shot tube explodes or bursts at a height of less than 8 m above the ground for category 2 shot tubes or less than 20 m for category 3 shot tubes. Observe and record whether any burning or incandescent matter falls to the ground at a distance of more than
6,0 m, for a category 2 shot tube, or 15,0 m, for a category 3 shot tube, from the testing point. Observe and record whether the shot tube remains upright whilst functioning. 8.3.3.5 Record the maximum A-weighted impulse sound pressure level, as measured by the sound level meter (8.3.2.3). 8.3.3.6 After the shot tube has ceased to function examine the firework case and record whether it has any additional holes or splits. 8.4 Determination of internal diameter (type test) 8.4.1 Apparatus Vernier callipers, reading to 0,1 mm, complying with ISO 3599. 8.4.2 Procedure Using the callipers (8.4.1), measure the inside diameter of the shot tube to the nearest 1 mm. Record the diameter. 8.5 Determination of net explosive content (type test) 8.5.1 Apparatus Laboratory balance, capable of weighing to the nearest 0,1 g. 8.5.2 Procedure Carefully dismantle a shot tube. Separate the protruding fuse and retain this for the side ignition test (8.6). If the pyrotechnic unit contains report and/or
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