1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operat
2、ing temperatures between 0 C and p165 C Part 4: Insulation componentsThe European Standard EN 14620-4:2006 has the status of a British StandardICS 23.020.10Design and manufacture of site built, vertical, BRITISH STANDARDBS EN 14620-4:2006BS EN 14620-4:2006This British Standard was published under th
3、e authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 49778 XAmendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application
4、.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of EN 14620-4:2006. This standard, together with BS EN 14620-3:2006, supersedes BS 7777-3:1993 which is withdrawn.The UK particip
5、ation in its preparation was entrusted to Technical Committee PVE/15, Storage tanks for the petroleum industry.A list of organizations represented on PVE/15 can be obtained on request to its secretary.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14620-4 September 2006 ICS 23.020.10 English V
6、ersion Design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between 0 C and -165 C - Part 4: Insulation components Conception et fabrication de rservoirs en acier fond plat, verticaux, cyli
7、ndriques, construits sur site, destins au stockage des gaz rfrigrs, liqufis, dont les tempratures de service sont comprises entre 0 C et -165 C - Partie 4: Constituants isolants Auslegung und Herstellung standortgefertigter, stehender, zylindrischer Flachboden-Stahltanks fr die Lagerung von tiefkalt
8、 verflssigten Gasen bei einer Betriebstemperatur zwischen 0 C und -165 C - Teil 4: Dmmung This European Standard was approved by CEN on 20 February 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
9、tus 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A
10、version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, E
11、stonia, 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 COMIT EUROPEN DE NORMALISATION E
12、UROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14620-4:2006: EEN 14620-4:2006 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references
13、 4 3 Terms and definitions .6 4 Design requirements, performance characteristics, testing and selection of insulating materials .6 4.1 General6 4.2 Analysis of design requirements .6 4.3 Assessment of the performance characteristics .7 4.4 Testing of materials and systems10 5 Protection of insulatio
14、n water vapour barrier11 5.1 General11 5.2 Protective structure formed by the outer tank .11 5.3 Protective cover for external insulation 11 6 Design of insulation system .12 6.1 General12 6.2 Thermal design 12 6.3 Structural design .13 6.4 Insulation for each tank component15 6.5 Design for differe
15、nt types of containment 19 7 Installation 19 7.1 Introduction19 7.2 General requirements19 7.3 Inspection and testing.20 Annex A (informative) Insulation materials 21 Table A.1 Single and double containment tanks 21 Table A.2 Full containment tanks.22 Table A.3 Membrane tanks23 Annex B (normative) T
16、est methods .24 Table B.1 Testing thermal resistance properties24 Table B.2 Testing mechanical properties 25 Table B.3 Testing temperature resistance.26 Table B.4 Testing permeability for/effects of water and water vapour properties 26 Table B.5 Testing of material behaviour in presence of product27
17、 Table B.6 Testing chemical properties 27 Table B.7 Testing fire resistance/reaction to fire28 Annex C (normative) Tank bottom insulation - Limit state theory .29 Bibliography 31 EN 14620-4:2006 (E) 3 Foreword This European Standard (EN 14620-4:2006) has been prepared by Technical Committee CEN/TC 2
18、65 “Site built metallic tanks for the storage of liquids”, the secretariat of which is held by BSI. 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 March 2007, and conflicting national standards s
19、hall be withdrawn at the latest by March 2007. EN 14620 Design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between 0 C and -165 C consists of the following parts: Part 1: General; Part 2:
20、 Metallic components; Part 3: Concrete components; Part 4: Insulation components; Part 5: Testing, drying, purging and cool-down. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
21、 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 14620-4:2006 (E) 4 1 Sco
22、pe This European Standard specifies the requirements for materials, design and installation of the insulation of refrigerated liquefied gas (RLG) storage tanks. RLG storage tanks store liquefied gas with a low boiling point, i.e. below normal ambient temperature. The concept of storing such products
23、 in liquid form and in non-pressurized tanks therefore depends on the combination of latent heat of vaporization and thermal insulation. Consequently thermal insulation for RLG storage tanks is not an ancillary part of the containment system (as for most ambient atmospheric hydrocarbon tanks) but it
24、 is an essential component and the storage tank cannot operate without a properly designed, installed and maintained insulation system. The main functions of the insulation in RLG storage tanks are: to maintain the boil off below the specific limits; to protect the non low temperature parts/material
25、s of the tank (mainly the outer tank) by maintaining these parts at their required ambient temperature; to limit the cool-down of the foundations/soil underneath the tank to prevent damage by frost heave; to prevent/minimize condensation and icing on the outer surfaces of the tank. A wide range of i
26、nsulation materials is available. However the material properties differ greatly amongst the various generically different materials and also within the same generic group of materials. Therefore within the scope of this European Standard, only general guidance on selection of materials is given. NO
27、TE For general guidance on selection of materials see Annex A. This European Standard deals with the design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between 0 C and 165 C. 2 Normative
28、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 826:1996, Thermal insulati
29、ng products for building applications Determination of compression behaviour EN 1604, Thermal insulating products for building applications Determination of dimensional stability under specified temperature and humidity conditions EN 1606, Thermal insulating products for building applications Determ
30、ination of compressive creep EN 1607, Thermal insulating products for building applications Determination of tensile strength perpendicular to faces EN 1608, Thermal insulating products for building applications Determination of tensile strength parallel to faces EN 14620-4:2006 (E) 5 EN 1609, Therm
31、al insulating products for building applications Determination of short term water absorption by partial immersion EN 12066, Installations and equipment for liquefied natural gas Testing of insulating linings for liquefied natural gas impounding areas EN 12086, Thermal insulating products for buildi
32、ng applications Determination of water vapour transmission properties EN 12087, Thermal insulating products for building applications Determination of long term water absorption by immersion EN 12088, Thermal insulating products for building applications Determination of long term water absorption b
33、y diffusion EN 12090:1997, Thermal insulating products for building applications Determination of shear behaviour EN 12091, Thermal insulating products for building applications Determination of freeze-thaw resistance EN 12667, Thermal performance of building materials and products Determination of
34、thermal resistance by means of guarded hot plate and heat flow meter methods Products of high and medium thermal resistance EN 12939, Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot plate and heat flow meter methods Thick products of
35、 high and medium thermal resistance EN 13468, Thermal insulating products for building equipment and industrial installations Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH EN 13471, Thermal insulating products for building equipment and industria
36、l installations Determination of the coefficient of thermal expansion EN 14620-1:2006, Design and manufacture of site built, vertical, cylindrical, flat-bottomed steel tanks for the storage of refrigerated, liquefied gases with operating temperatures between 0C and 165 C Part 1: General EN ISO 62, P
37、lastics Determination of water absorption (ISO 62:1999) EN ISO 3582, Flexible cellular polymeric materials Laboratory assessment of horizontal burning characteristics of small specimens subjected to a small flame (ISO 3582:2000) EN ISO 4590, Rigid cellular plastics Determination of the volume percen
38、tage of open cells and closed cells (ISO 4590:2002) EN ISO 4624, Paints and varnishes Pull-off test for adhesion (ISO 4624:2002) ISO 844, Rigid cellular plastics Determination of compression properties ISO 4897, Cellular plastics Determination of the coefficient of linear thermal expansion of rigid
39、materials at sub-ambient temperatures ISO 8301, Thermal insulation Determination of steady-state thermal resistance and related properties Heat flow meter apparatus ISO 8302, Thermal insulation Determination of steady-state thermal resistance and related properties Guarded hot plate apparatus EN 146
40、20-4:2006 (E) 6 3 Terms and definitions For the purpose of this European Standard, the terms and definitions given in EN 14620-1:2006 apply. 4 Design requirements, performance characteristics, testing and selection of insulating materials 4.1 General The selection of the appropriate insulation syste
41、m and materials shall be based on the following: analysis of design requirements (see 4.2). assessment of the performance characteristics of the materials (see 4.3). For the insulation materials used, see Annex A. 4.2 Analysis of design requirements 4.2.1 General The thermal insulation system as a w
42、hole and each component of it separately, shall be designed taking into account the following design requirements. 4.2.2 Thermal resistance 4.2.2.1 Normal operation of the tank All factors contributing to heat in-leak through the insulation system shall be considered, such as: product temperature; e
43、xternal temperature and other climatic conditions (solar radiation, wind, humidity etc.); thermal conductivity; NOTE A safety margin to be built in for influences of degradation through ageing. thermal convection; heat in-leak through radiation; heat in-leak through cold bridges (from insulation sys
44、tem or tank design). 4.2.2.2 Accidental conditions In addition, accidental conditions shall be considered. These shall include: required thermal resistance, specified for each component of the insulation and the designed duration of the accidental condition; thermal resistance offered by the insulat
45、ion under these conditions. EN 14620-4:2006 (E) 7 4.2.3 Structural requirements The insulation system shall be designed for the following structural requirements: static and dynamic actions in all directions; liquid tightness (if required). 4.2.4 Specific design requirements In addition to the above
46、 thermal and structural requirements, the tank insulation design shall fulfil all the specific design requirements that are inherent with the selected specific insulation system, material, installation method and type of containment. These shall be specified on a case-by-case basis. 4.3 Assessment o
47、f the performance characteristics 4.3.1 General Based on the design requirements, the required performance characteristics of the insulation materials in the operating temperature range shall be determined. As a minimum the subjects described in 4.3.2 to 4.3.8 shall be considered. 4.3.2 Thermal resi
48、stance The following shall be considered: thermal conductivity: 1) over the required temperature range; 2) in the intended environment, external and internal (product vapour space, purged space, contact with liquid product); 3) taking into account ageing effects over the tank design lifetime; possib
49、le heat in-leak through radiation; possible heat in-leak through convection (permeability of the insulation material and of the complete insulation system); heat in-leak through cold bridges. For testing of thermal resistance, see Table B.1. 4.3.3 Mechanical properties The following shall be considered: compressive properties both at short- and at long-term (creep); tensile and shear
