EN 13341:2005+A1:2011

Static thermoplastic tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded and rotationally moulded polyethylene tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 - Requirements and test methods

This document specifies requirements for materials, physical properties and performance of single blow moulded and rotationally moulded polyethylene tanks and of rotationally moulded tanks made of anionically polymerized polyamide 6, with or without reinforcements, for above ground storage of domestic heating oil, kerosene and diesel fuels for the supply of building heating/cooling systems.
It is only applicable to static blow moulded and rotationally moulded polyethylene tanks and to rotationally moulded tanks made of anionically polymerized polyamide 6 that are subject to atmospheric pressure, but not subject to any external loading and have a capacity from 400 l up to 10 000 l.

Ortsfeste Tanks aus Thermoplasten für oberirdische Lagerung von Haushalts-Heizölen, Kerosin und Dieselkraftstoffen - Tanks, die aus blasgeformtem und rotationsgeformtem Polyethylen sowie aus rotationsgeformtem anionisch polymerisiertem Polyamid 6 hergestellt wurden - Anforderungen und Prüfverfahren

!Dieses Dokument legt Anforderungen an die Werkstoffe, die physikalischen Eigenschaften und die
Leistung von einzelnen Tanks aus blas- und rotationsgeformtem Polyethylen sowie aus rotationsgeformtem
anionisch polymerisiertem Polyamid 6 — mit oder ohne Verstärkungen — für die oberirdische Lagerung von
Haushalts-Heizöl, Kerosin und Dieselkraftstoffen für Heiz- und Kühlsysteme von Gebäuden fest.
Es gilt nur für aus blas- und rotationsgeformtem Polyethylen sowie aus rotationsgeformtem anionisch
polymerisiertem Polyamid 6 hergestellte ortsfeste Tanks, die dem atmosphärischen Druck aber keinen
äußeren Lasten ausgesetzt sind und ein Füllvolumen von 400 l bis 10 000 l aufweisen."
!gestrichener Text"

Réservoirs statiques en thermoplastiques destinés au stockage non enterré de fioul domestique de chauffage, de pétrole lampant et de gazole - Réservoirs en polyéthylène moulés par soufflage et par rotation et réservoirs moulés par rotation fabriqués en polyamide 6 polymérisé de manière anionique - Exigences et méthodes d'essai

Le présent document spécifie les exigences pour les matières, les propriétés physiques et la performance
obtenue par les réservoirs seuls en polyéthylène moulés par soufflage et par rotation et les réservoirs moulés par
rotation fabriqués en polyamide 6 polymérisé de manière anionique, avec ou sans renfort, destinés au stockage non
enterré de fioul domestique de chauffage, de pétrole lampant et de gazole pour l’alimentation des systèmes de
chauffage/refroidissement des bâtiments.
Il ne s’applique qu’aux réservoirs statiques en polyéthylène moulés par soufflage ou par rotation et aux réservoirs
moulés par rotation fabriqués en polyamide 6 polymérisé de manière anionique qui sont soumis à la pression
atmosphérique mais qui ne sont soumis à aucune charge extérieure et qui ont une capacité allant de 400 l
à 10 000 l.

Plastomerne stabilne posode za nadzemno skladiščenje kurilnega olja, kerozina in dizelskih pogonskih goriv - Posode iz pihanega polietilena, rotacijsko oblikovanega polietilena in iz poliamida 6, proizvedenega z anionsko polimerizacijo - Zahteve in preskusne metode

Ta dokument določa zahteve za materiale, fizične lastnosti in delovanje enojnih pihanih in rotacijsko oblikovanih polietilenskih posod in rotacijsko oblikovanih posod, proizvedenih z anionsko polimerizacijo poliamida 6, z utrditvijo ali brez nje, za nadzemno skladiščenje kurilnega olja, kerozina in dizelskih pogonskih goriv za napajanje grelnih/hladilnih sistemov zgradb.
Velja samo za fiksne pihane in rotacijsko oblikovane polietilenske tanke in za rotacijsko oblikovane posode, izdelane iz anionsko polimeriziranega poliamida 6, ki so pod atmosferskim pritiskom, vendar niso odvisni od drugih zunanjih obremenitev in imajo zmogljivost od 400 l do 10.000 l.

General Information

• Status: Published
• Publication Date: 11-Jan-2011
• Withdrawal Date: 30-Jul-2011
• ICS: 23.020.10 - Stationary containers and tanks
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249/WG 25 - Static thermoplastic tanks for above ground storage of fuel
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Jun-2011
• Completion Date: 15-Jun-2011
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/131 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on pipes, tanks and ancillaries, not in contact with water intended for human consumption
• Ref Project: SIST EN 13341:2005+A1:2011 - Static thermoplastic tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded and rotationally moulded polyethylene tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 - Requirements and test methods

Relations

• Merged From: EN 13341:2005 - Thermoplastics static tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded polyethylene, rotationally moulded polyethylene and polyamide 6 by anionic polymerization tanks - Requirements and test methods
• Effective Date: 19-Jan-2023
• Merged From: EN 13341:2005/FprA1 - Static thermoplastic tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded and rotationally moulded polyethylene tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 - Requirements and test methods
• Effective Date: 19-Jan-2023
• Revised: prEN 13341 - Static thermoplastic tanks for above ground storage of fuel - Product characteristics and test methods
• Effective Date: 18-Oct-2017

Overview

EN 13341:2005+A1:2011 is a CEN European standard specifying requirements and test methods for static thermoplastic above-ground tanks used to store domestic heating oils, kerosene and diesel fuels. It applies to single blow‑moulded and rotationally moulded polyethylene (PE) tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 (PA6), with or without reinforcements. Applicable tanks are atmospheric, un‑loaded static tanks with capacities from 400 L to 10 000 L intended for building heating and cooling systems.

Key topics and technical requirements

• Materials and material tests: Raw material properties (density, melt flow/mass‑flow, tensile strength) and limits on regrind use (blow‑moulded PE ≤ 50% regrind; no regrind for rotationally moulded tanks).
• Tank performance tests: Mechanical properties, resistance to oil, weathering and UV protection for external installation. PA6 has specific tensile, oil resistance and colour‑bleed requirements.
• Design and fittings:
  • Filling aperture for direct fill: minimum 38 mm diameter with cap.
  • Venting: vent area at least equal to sum of smallest filling cross‑section (min. 38 mm).
  • Suction/outlet: safe, corrosion‑resistant fittings; provision for sludge drainage if outlet is below liquid level.
  • Provision for contents gauge or sighting where wall transparency is insufficient.
• Safety systems:
  • Provision for overfill prevention per EN 13616.
  • Leak detection options conforming to EN 13160 series.
  • Electrostatic behaviour guidance per CLC/TR 50404 (instructions for fuels with flash point ≤ 55 °C).
• Durability and marking: Requirements for weathering resistance, manufacturer’s instructions for supports, marking, transport, handling and installation.
• Conformity assessment: Initial type testing (ITT) and factory production control (FPC) to demonstrate compliance.

Applications and practical value

• Standard for specifying and testing above‑ground fuel storage tanks used by:
  • Tank manufacturers (design, production control, material selection)
  • Test laboratories (ITT, material and tank tests)
  • Installers and specifiers (selection of compliant tanks, installation guidance)
  • Facility managers and building owners (safe storage of heating oil, kerosene, diesel)
• Ensures safe, durable tanks that meet EU regulatory interfaces (e.g., Construction Products Directive where applicable) and integrates with leak detection, overfill prevention and fire classification regimes.

Who should use this standard

• Manufacturers of blow‑moulded and rotationally moulded PE and PA6 tanks
• Product certifiers, testing labs and notified bodies
• Mechanical engineers, heating system specifiers and compliance officers
• Installers, building owners and environmental/safety regulators

Related standards

• EN 13160 (leak detection systems)
• EN 13616 (overfill prevention)
• EN 13501‑1 (fire classification)
• CLC/TR 50404 (electrostatics)
• Relevant EN ISO test methods for plastics (referenced in EN 13341:2005+A1:2011)

Keywords: EN 13341:2005+A1:2011, static thermoplastic tanks, blow moulded polyethylene, rotationally moulded polyethylene, anionic polyamide 6, above ground storage, domestic heating oil, kerosene, diesel, tank requirements, test methods.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LMVNRVNROrtsfeste Tanks aus Thermoplasten für oberirdische Lagerung von Haushalts-Heizölen, Kerosin und Dieselkraftstoffen - Tanks, die aus blasgeformtem und rotationsgeformtem Polyethylen sowie aus rotationsgeformtem anionisch polymerisiertem Polyamid 6 hergestellt wurden - Anforderungen und PrüfverfahrenRéservoirs statiques en thermoplastiques destinés au stockage non enterré de fioul domestique de chauffage, de pétrole lampant et de gazole - Réservoirs en polyéthylène moulés par soufflage et par rotation et réservoirs moulés par rotation fabriqués en polyamide 6 polymérisé de manière anionique - Exigences et méthodes d'essaiStatic thermoplastic tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded and rotationally moulded polyethylene tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 - Requirements and test methods23.020.10UH]HUYRDUMLStationary containers and tanksICS:Ta slovenski standard je istoveten z:EN 13341:2005+A1:2011SIST EN 13341:2005+A1:2011en,fr,de01-maj-2011SIST EN 13341:2005+A1:2011SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13341:2005+A1
January 2011 ICS 23.020.10 Supersedes EN 13341:2005English Version
Static thermoplastic tanks for above ground storage of domestic heating oils, kerosene and diesel fuels - Blow moulded and rotationally moulded polyethylene tanks and rotationally moulded tanks made of anionically polymerized polyamide 6 - Requirements and test methods
Réservoirs statiques en thermoplastiques destinés au stockage non enterré de fioul domestique de chauffage, de pétrole lampant et de gazole - Réservoirs en polyéthylène moulés par soufflage et par rotation et réservoirs moulés par rotation fabriqués en polyamide 6 polymérisé de manière anionique - Exigences et méthodes d'essai
Ortsfeste Tanks aus Thermoplasten für oberirdische Lagerung von Haushalts-Heizölen, Kerosin und Dieselkraftstoffen - Tanks, die aus blasgeformtem und rotationsgeformtem Polyethylen sowie aus rotationsgeformtem anionisch polymerisiertem Polyamid 6 hergestellt wurden - Anforderungen und Prüfverfahren This European Standard was approved by CEN on 3 February 2005 and includes Amendment 1 approved by CEN on 27 November 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13341:2005+A1:2011: ESIST EN 13341:2005+A1:2011

Test methods for determination of material characteristics . 19Annex B (normative)
Test methods for determination of tank characteristics . 23Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or other provisions of EU Directives. . 27Bibliography . 38 SIST EN 13341:2005+A1:2011

!". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with Construction Product Directive (89/106/EEC), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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. SIST EN 13341:2005+A1:2011

1 Scope !This document specifies requirements for materials, physical properties and performance of single blow moulded and rotationally moulded polyethylene tanks and of rotationally moulded tanks made of anionically polymerized polyamide 6, with or without reinforcements, for above ground storage of domestic heating oil, kerosene and diesel fuels for the supply of building heating/cooling systems. It is only applicable to static blow moulded and rotationally moulded polyethylene tanks and to rotationally moulded tanks made of anionically polymerized polyamide 6 that are subject to atmospheric pressure, but not subject to any external loading and have a capacity from 400 l up to 10 000 l." !deleted text" 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. EN 13160-1, Leak detection systems — Part 1: General principles EN 13160-2, Leak detection systems — Part 2: Pressure and vacuum systems EN 13160-3, Leak detection systems — Part 3: Liquid systems for tanks EN 13160-4, Leak detection systems — Part 4: Liquid and/or vapour sensor systems for use in leakage containments or interstitial spaces EN 13160-5, Leak detection systems — Part 5: Tank gauge leak detection systems EN 13160-6, Leak detection systems — Part 6: Sensors in monitoring wells EN 13160-7, Leak detection systems — Part 7: General requirements and test methods for interstitial spaces, leak protecting linings and leak protecting jackets EN 13501-1, Fire classification of construction products and building elements — Part 1. Classification using test data from reaction to fire tests EN 13616, Overfill prevention devices for static tanks for liquid petroleum fuels EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:1999) !EN ISO 293:2005, Plastics — Compression moulding of test specimens of thermoplastic materials (ISO 293:2004)" !EN ISO 527-2:1996, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994)" !deleted text" !EN ISO 1133:2005, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005)" SIST EN 13341:2005+A1:2011

Polyethylene (PE) moulding and extrusion materials — Part 2: Preparation of test specimens and determination of properties (ISO 1872-2:2007)" EN ISO 4892-1, Plastics — Method of exposure to laboratory light sources — Part 1: General guidance (ISO 4892-1:1999) EN ISO 4892-2, !Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps (ISO 4892-2:2006)" !EN ISO 15512, Plastics — Determination of water content (ISO 15512:2008)" CLC/TR 50404, Electrostatics — Code of practice for the avoidance of hazards due to static electricity 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 tank container for the storage of domestic heating, kerosene and diesel fuels at atmospheric pressure which retains its designed shape without any reinforcements when empty 3.2 brimful capacity (of a tank) volume of water held by the tank filled through the filling orifice to the point of overflowing 3.3 maximum filling capacity (of a tank) value of 95 % of the brimful capacity !!!!3.4 reinforcement constitutive element of a tank which contributes to its mechanical stability NOTE For example, one or several strapping(s), a secondary containment". 4 Requirements 4.1 Materials 4.1.1 General Raw materials and samples taken from tanks shall be tested and fulfil the requirements according to Table 1. The proportion of regrind from the same material shall not exceed 50 % for blow-moulded tanks. Regrind shall not be used for rotationally moulded tanks. SIST EN 13341:2005+A1:2011

NOTE This sub-clause does not cover resistance to fire issues." 4.1.3 Electrostatic behaviour Electrostatic behaviour is not a characteristic of the tank or tank material but a phenomenon resulting from some storage media and the filling procedure. Manufacturers shall provide durable notices on all sizes of tanks with appropriate wording drawing the users attention to filling procedures according to CLC/TR 50404 for flammable liquids with a flash point < 55 °C. ! 4.1.4 Content and/or release of dangerous substances Materials used for the tanks according to this standard shall not contain or release any dangerous substances." SIST EN 13341:2005+A1:2011

Density a A single polymer resin shall have a density not less than 934 kg/m3. A.2.1 Melt flow rate b Shall be 4,0 g/10 min ± 3,0 g/10 min at 190 ºC, 2,16 kg. Maximum variation of the melt flow rate of moulded tank shall not be greater than 20 % of the value determined on the raw material.
A.2.2 Tensile strength c
Tensile strength at yield shall not be less than 15 MPa. Elongation at yield shall not be more than 25 %. The elongation at break shall not be less than 200 %. A.2.3 Resistance to oil c Mass alteration shall be less than 10 %. Variation in tensile strength at yield shall not exceed 20 % of that measured in A.2.3. Change in elongation at break shall be less than 150 % of that measured in A.2.3. A.2.4 Polyamide 6 (by anionic polymerization) Tensile strength c Tensile strength shall not be less than 30 MPa at yield. Elongation shall be more than 20 % at break. A.3.1 Resistance to oil c Mass alteration shall be less than 0,4 %. Variation in tensile strength shall not exceed 5 % of that measured in A.3.1. Elongation at break shall be more than 20 %. A.3.2
Colour bleed c The bleed time of any sample shall not be less than 5,5 h. A.3.3 !Blow moulded polyethylene
Rotationally moulded polyethylene
Polyamide 6 (by anionic polymerisation) Resistance to weathering c For external installations after exposure to global radiant exposure of 34 GJ/m2 (corresponding to a radiant exposure of 2,3 GJ/m2 for the band from 300 nm to 400 nm) the elongation at break shall be greater than 50 % of the initial value. For internal installations the elongation at break after exposure to global radiant exposure of 3,4 GJ/m2 (corresponding to a radiant exposure of 0,23 GJ/m2 for the band from
300 nm to 400 nm) shall be greater than 50 % of the initial elongation at break. The manufacturer shall ensure that changing the additive package does not decrease weather resistance. A.1.3, A.1.5
A.2.3, A.2.5
A.3.1, A.3.4" a Test to be carried out on raw material. b Test to be carried out on raw material and on sample taken from a tank. c Test to be carried out on tank.
4.2 Design 4.2.1 Filling systems In the case of direct fill, the aperture for filling shall be a minimum 38 mm in diameter and shall be covered with a cap or lid. SIST EN 13341:2005+A1:2011

i) when the method of production is altered in such a way as to affect type test performance; ii) when the manufacturer changes the base polymer grade used; iii) when changes are made in the dimensions of wall thickness, height, diameter, length, width or configuration for any tank. Test methods, given in Annexes A and B, which shall be used for ITT, are specified in Table 2. 5.2.2 Sampling A sufficient number of tanks shall be randomly selected from the production batch to complete all the tests for ITT. SIST EN 13341:2005+A1:2011

+
1 Any one from the family Melt flow rate A.1.2 +
+
Tensile strength A.1.3 +
+
Resistance to oil A.1.4 +
+
Resistance to weathering A.1.5 +
+
Rotationally moulded polyethylene tanks Density A.2.1 +
+
1 Any one from the family Melt flow rate A.2.2 +
+
Tensile strength A.2.3 +
+
Resistance to oil A.2.4 +
+
Resistance to weathering A.2.5 +
+
Polyamide 6 tanks by anionic polymerization Tensile strength A.3.1 +
+
1 Any
one from the family Resistance to oil A.3.2 +
+
Colour bleed A.3.3 +
+
Resistance to weathering A.3.4 +
+
Water content B.9 +
+
All tanks Capacity B.1 +
+ Each
+
1 Any one from the family Visual appearance B.2 +
+ Each
+
1 Any one from the family Mass B.3 +
+ Each
+
1 Any one from the family Wall thickness B.4 +
+ Each
+
1 Any one from the family Impact resistance B.5 +
+ Each
+ +
1 The most critical tank c Deformation or elongation b B.6 +
+ Each
+ +
1 The most critical tank c Pressure resistance B.7 +
+ Each
+ +
1 The most critical tank c Leak tightness B.8 +
+ Each
+ +
1 The most critical tank c a I is initial type test in case of a new family
i), ii) and iii) are changes as mentioned in 5.2.1
+ means testing relevant for the characteristic
void means testing not relevant for the characteristic b see Tables 4 and 5 for the choice of the test method c the most critical tank of the family as defined during the Initial Type Test “I”.
If none, the largest tank will normally be selected assuming this size is considered as having the worst performance " SIST EN 13341:2005+A1:2011

Raw material
a Every new batch
Mass B.3 Tank Every tank Rotationally moulded polyethylene tanks Melt flow rate
A.2.2 Tank Once every working week on a programme that covers all machines
Raw material a
Every new batch
Mass B.3 Tank Every shot and one tank per shift Polyamide 6 tanks by anionic polymerization Colour bleed A.3.3 Tank At the beginning and the end of the working week
Mass B3 Tank Every tank All tanks Visual appearance B.2 Tank Every tank
Wall thickness B.4 Tank Every tank at its critical points as identified by the manufacturer and an overall test per shift
Leak tightness
B.8 Tank Every tank a This requirement may be waived if the raw material manufacturer supplies a certificate of conformity with each delivery, i.e. a document which certifies that the material supplied is in compliance with the melt flow rate as specified in an agreed supply specification.
An FPC system conforming to the requirements of EN ISO 9001, and made specific to the requirements of this document, is considered to satisfy the above requirements. The results of inspections, tests or assessments requiring action shall be recorded, as shall any action taken. The action to be taken when control values or criteria are not met shall be recorded and retained for the period specified in the manufacturer’s FPC procedures. SIST EN 13341:2005+A1:2011

Table 4 — Requirements for blow moulded polyethylene thermoplastic tanks Property Requirement Test method Capacity
The brimful capacity shall be measured. The maximum filling capacity, declared by the manufacturer, shall be checked. B.1 Visual appearance There shall be no bubbles, blisters or other defects in the tank wall which could cause a hole or fracture. B.2 Mass The minimum mass shall be the mass of the lightest tank as determined by the initial type test. B.3 Wall thickness For tanks intended for storage of kerosene, the minimum wall thickness shall be 4,5 mm, or if the wall thickness is less than 4,5 mm, the tank manufacturer shall demonstrate by a test method that the oil permeation is equal or less than the permeation through a rotationally moulded tank sample with a thickness of 4,5 mm and made of a polyethylene with a density of 934 kg/m3. For tanks tested in accordance with B.6.1, the minimum wall thickness shall not be less than 2,5 mm and, for factory production control the minimum wall thickness shall be the wall thickness as determined by the initial type test. For tanks tested in accordance with B.6.2, the minimum wall thickness shall be as follows, except for each area which surface does not exceed 300 mm2, where a margin of 10 % shall be allowed regarding the minimum wall thickness. These areas shall be located a minimum of 50 mm from the bottom of the tank. The manufacturer shall declare in a document, that the margin has no effects on the physical properties of the tank. B.4
For maximum filling capacity Minimum wall thickness
!≥ 400 l,
< 1 000 l 3,0 mm"
≥ 1 000 l,
< 1 500 l 3,2 mm
≥ 1 500 l,
< 2 000 l 3,5 mm
≥ 2 000 l,
< 2 500 l 3,7 mm
≥ 2 500 l,
< 3 000 l 3,9 mm
≥ 3 000 l, < 3 500 l 4,0 mm
The minimum wall thickness of tanks with a maximum !filling" capacity ≥ 3 500 l shall be determined according to B 6.1.
Impact resistance The tank shall remain leak tight. B.5 Elongation The tank shall remain leak tight. Elongation at the surface shall no exceed 1,5 % after 1 000 h. B.6.1 Deformation The volumetric deformation is stabilized when the rate of volumetric expansion is not greater than 0,015 % volume, per day, for tanks with a maximum filling capacity of up to and including 3 800 l or 0,02 % volume, per day, for tanks with a maximum filling capacity of over 3 800 l. After stabilisation
the deformation shall conform to the following equations:
mmwwid100+≤
mmllid200+≤ where dl
is the length of the tank after deformation in mm; il
is the initial length of the tank in mm; dw
is the width of the tank after deformation in mm; iw
is the initial width of the tank in mm. B.6.2 Pressure resistance !The tank shall be leak tight." In the case of reinforced tanks the reinforcement shall retain its reinforcing function up to a hydrostatic pressure corresponding to twice the tank height. B.7 Leak tightness The tank shall be leak tight. B.8
Property Requirement Test method Capacity
The brimful capacity shall be measured. The maximum filling capacity, declared by the manufacturer, shall be checked. B.1 Visual appearance There shall be no bubbles, blisters or other defects in the tank wall which could cause a hole or fracture. B.2 Mass The minimum mass shall be the mass of the lightest tank as determined by the initial type test. B.3 Wall thickness For tanks intended for storage of kerosene, the minimum wall thickness shall be 4,5 mm. B.4
For tanks tested in accordance with B.6.1, the minimum wall thickness shall not be less than 2,5 mm and, for factory production control the minimum wall thickness shall be the wall thickness as determined by the initial type test. For tanks tested in accordance with B.6.2, the minimum wall thickness shall be as follows, except for each area which surface does not exceed 300 mm2, where a margin of 10 % shall be allowed regarding the minimum wall thickness. These areas shall be located a minimum of 50 mm from the bottom of the tank. The manufacturer shall declare in a document, that the margin has no effects on the physical properties of the tank.
For maximum filling capacity Minimum wall thickness
!≥ 400 l,
< 1 000 l 3,3 mm"
≥ 1 000 l,
< 1 500 l 3,5 mm
≥ 1 500 l,
< 2 000 l 3,9 mm
≥ 2 000 l,
< 2 500 l 4,1 mm
≥ 2 500 l,
< 3 000 l 4,3 mm
≥ 3 000 l,
< 3 500 l ≥ 3 500 l,
< 5 000 l ≥ 5 000 l,
< 7 500 l ≥ 7 500 l, ≤ 10 000 l 4,4 mm 4,8 mm 5,1 mm 5,4 mm
Impact resistance The tank shall remain leak tight B.5 Elongation The tank shall remain leak tight. Elongation at the surface shall not exceed 1,5 % after 1 000 h. B.6.1 Deformation The volumetric deformation is stabilized when the rate of volumetric expansion is not greater than 0,015 % volume, per day, for tanks with a maximum filling capacity of up to and including 3 800 l or 0,02 % volume, per day, for tanks with a maximum filling capacity of over 3 800 l. After stabilisation the deformation shall conform to the following equation: mmwwid100+≤ mmllid200+≤ where dl is the length of the tank after deformation in mm; il is the initial length of the tank in mm; dw
is the width of the tank after deformation in mm; iw
is the initial width of the tank in mm. B.6.2 Pressure resistance !The tank shall be leak tight." In the case of reinforced tanks the reinforcement shall retain its reinforcing function up to a hydrostatic pressure corresponding to twice the tank height. B.7 Leak tightness The tank shall be leak tight. B.8 SIST EN 13341:2005+A1:2011
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