BS EN 14620-4:2006 - 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. Insulation components – BSI British

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BS EN 14620-4:2006

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. Insulation components

Status : Current, Under review   Published : December 2006

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BS EN 14620-4:2006 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 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 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/materials 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 insulation 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.

Contents include:

  • Normative references

  • Terms and definitions

  • Design requirements, performance characteristics, testing and selection of insulating materials

  • Analysis of design requirements

  • Assessment of the performance characteristics

  • Testing of materials and systems

  • Protection of insulation – water vapour barrier

  • Protective structure formed by the outer tank

  • Protective cover for external insulation

  • Design of insulation system

  • Thermal design

  • Structural design

  • Insulation for each tank component

  • Design for different types of containment

  • Installation

  • Inspection and testing

  • Insulation materials

  • Single and double containment tanks

  • Full containment tanks

  • Membrane tanks

  • Test methods

  • Testing thermal resistance properties

  • Testing mechanical properties

  • Testing temperature resistance

  • Testing permeability for/effects of water and water vapour properties

  • Testing of material behaviour in presence of product

  • Testing chemical properties

  • Testing fire resistance/reaction to fire

  • Tank bottom insulation - Limit state theory

  • Bibliography


BS EN 14620-4:2006 replaces BS 7777-4:1993 which has been withdrawn.




Standard NumberBS EN 14620-4:2006
TitleDesign 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. Insulation components
StatusCurrent, Under review
Publication Date29 December 2006
Confirm Date15 November 2010
Cross ReferencesEN 826:1996, EN 1604, EN 1606, EN 1607, EN 1608, EN 1609, EN 12066, EN 12086, EN 12087, EN 12088, EN 12090:1997, EN 12091, EN 12667, EN 12939, EN 13468, EN 13471, EN 14620-1:2006, EN ISO 62, ISO 62:1999, EN ISO 3582, ISO 3582:2000, EN ISO 4590, ISO 4590:2002, EN ISO 4624, ISO 4624:2002, ISO 844, ISO 4897, ISO 8301, ISO 8302, EN 14620-2, EN 14620-3:2006, DIN 53428, EN 1991-1-1, EN 1991-1-2, EN 1991-1-3, EN 1991-1-4, EN 1991-1-5, EN 1991-1-6, EN 13501-2
ReplacesBS 7777-3:1993
International RelationshipsEN 14620-4:2006
Draft Superseded By03/105151 DC
DescriptorsDesign, Refrigeration, Tanks (containers), Vertical, Thermal insulation, Bulk storage containers, Inspection, Bottom, Pressure vessels, Mathematical calculations, Flat (shape), Steels, Thermal insulating materials, Thermal properties of materials, Liquefied gases, Installation, Low temperatures, Gas pressure vessels, Containers, Cylindrical shape, Structural design
ICS23.020.10
Title in FrenchConception et fabrication de reservoirs en acier a fond plat, verticaux, cylindriques, construits sur site, destines au stockage des gaz refrigeres, liquefies, dont les temperatures de service sont comprises entre 0°C et -165°C. Constituants isolants
Title in GermanAuslegung und Herstellung standortgefertigter, stehender, zylindrischer Flachboden-Stahltanks fuer die Lagerung von tiefkalt verfl uessigten Gasen bei einer Betriebstemperatur zwischen 0°C und -165°C. Daemmung
CommitteePVE/15
ISBN0 580 49778 X
PublisherBSI
FormatA4
DeliveryYes
Pages34
File Size357 KB
Price£214.00


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