EN 14015:2004/prA1

Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above

An annex giving the requirements for self-supporting aluminium roofs for fixed roof tanks.

Auslegung und Herstellung standortgefertigter, oberirdischer, stehender, zylindrischer, geschweißter Flachboden-Stahltanks für die Lagerung von Flüssigkeiten bei Umgebungstemperatur und höheren Temperaturen

Conception et fabrication de réservoirs en acier, soudés, aériens, à fond plat, cylindriques, verticaux, construits sur site destinés au stockage des liquides à la température ambiante ou supérieure

Specifikacija za načrtovanje in proizvodnjo na mestu postavitve grajenih navpičnih, valjastih, varjenih, jeklenih nadzemnih posod z ravnim dnom za shranjevanje tekočin pri temperaturi okolja ali višji temperaturi

General Information

• Status: Not Published
• Technical Committee: CEN/TC 265 - Site built metallic tanks for the storage of liquids
• Drafting Committee: CEN/TC 265 - Site built metallic tanks for the storage of liquids
• Current Stage: 4598 - Decision to abandon - Finalization for Vote
• Start Date: 01-Feb-2007
• Completion Date: 01-Feb-2007
• Ref Project: SIST EN 14015:2005/oprA1:2005 - Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above

Relations

• Amends: EN 14015:2004 - Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above
• Effective Date: 22-Dec-2008

Overview

EN 14015:2004/prA1 is a CEN specification for the design and manufacture of site-built, vertical, cylindrical, flat-bottomed, above-ground welded steel storage tanks for liquids at ambient temperature and above. The prA1 amendment adds a normative Annex S that specifies requirements for self-supporting aluminium dome roofs for fixed‑roof tanks - covering materials, design, erection and testing of aluminium dome roof systems attached to steel tank shells.

Key topics and technical requirements

• Scope: Site-built welded steel tanks; Annex S focuses on self-supporting aluminium dome roofs.
• Design basis: Aluminium dome roofs shall be designed in accordance with ENV 1999 and account for roof loads, attachment forces and tank rim stiffening. Suppliers must provide load magnitudes and directions for tank design.
• Roof-to-shell connections: Two basic types - fixed and sliding (sliding roofs use an integral tension ring and mounted bearings to allow radial movement).
• Aluminium sheeting loads: Sheets must sustain 3 kN/m distributed load and two separate concentrated loads of 1.1 kN each over 0.1 m² (not simultaneously).
• Material requirements:
  • Structural and sheeting aluminium per EN 485, EN 754, EN 755.
  • High‑tensile fasteners; aluminium, steel or stainless depending on stress. Steel fasteners must be aluminized to reduce corrosion. Self‑tapping stainless screws for sheeting.
  • Gaskets from elastomeric materials compatible with product and service temperatures.
  • Corrosion barrier between aluminium roof and steel tank (PTFE, stainless, aluminized steel, etc.).
• Minimum dimensions: Aluminium sheeting ≥ 1.2 mm; aluminium gusset plates ≥ 10 mm.
• Earthing: Stainless steel earthing cables, nominal diameter ≥ 5 mm, arranged every third mounting or ~10 m.
• Testing: Water leakage spray test for general leakage; soapy water test for gas‑tight roofs. Test reports must reference EN 14015 and record water origin and any leakage.

Applications and users

• Practical for engineering, fabrication and installation of fixed‑roof storage tanks retrofitted or built with aluminium dome roofs.
• Primary users:
  • Tank designers and structural engineers
  • Tank manufacturers and aluminium roof suppliers
  • Site erection contractors and NDE specialists
  • Plant owners and asset managers evaluating retrofits or corrosion mitigation
• Typical sectors: petrochemical, fuel storage terminals, water/wastewater, industrial bulk liquids storage.

Related standards

• ENV 1999 (design of aluminium structures)
• EN 485, EN 754, EN 755 (aluminium material/product standards)
• EN 14015:2004 (base standard for site‑built tanks)

This standard helps ensure safe, corrosion‑aware design and practical guidance for integrating lightweight aluminium dome roofs with welded steel storage tanks.

Standards Content (Sample)

SLOVENSKI STANDARD
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QDYSLþQLKYDOMDVWLKYDUMHQLKMHNOHQLKQDG]HPQLKSRVRG]UDYQLPGQRP]D
VKUDQMHYDQMHWHNRþLQSULWHPSHUDWXULRNROMDDOLYLãMLWHPSHUDWXUL
Specification for the design and manufacture of site built, vertical, cylindrical, flat-
bottomed, above ground, welded, steel tanks for the storage of liquids at ambient
temperature and above
Auslegung und Herstellung standortgefertigter, oberirdischer, stehender, zylindrischer,
geschweißter Flachboden-Stahltanks für die Lagerung von Flüssigkeiten bei
Umgebungstemperatur und höheren Temperaturen
Conception et fabrication de réservoirs en acier, soudés, aériens, a fond plat,
cylindriques, verticaux, construits sur site destinés au stockage des liquides a la
température ambiante ou supérieure
Ta slovenski standard je istoveten z: EN 14015:2004/prA1
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
EN 14015:2004
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
December 2004
ICS
English version
Specification for the design and manufacture of site built,
vertical, cylindrical, flat-bottomed, above ground, welded, steel
tanks for the storage of liquids at ambient temperature and
above
Conception et fabrication de réservoirs en acier, soudés, Auslegung und Herstellung standortgefertigter,
aériens, à fond plat, cylindriques, verticaux, construits sur oberirdischer, stehender, zylindrischer, geschweißter
site destinés au stockage des liquides à la température Flachboden-Stahltanks für die Lagerung von Flüssigkeiten
ambiante ou supérieure bei Umgebungstemperatur und höheren Temperaturen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 265.
This draft amendment A1, if approved, will modify the European Standard EN 14015:2004. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 Management Centre has the same status
as the official versions.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14015:2004/prA1:2004: E
worldwide for CEN national Members.

Contents                                                   Page

Foreword. 3
Annex S (normative)  Self-supporting aluminium dome roofs for fixed
roof tanks. 4
Foreword
This document (EN 14015:2004/prA1:2004) has been prepared by Technical Committee CEN/TC 265 "Site
built metallic tanks for the storage of liquids", the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
Annex S
(normative)
Self-supporting aluminium dome roofs for fixed roof tanks
S.1 General
This annex specifies requirements for the materials, design, erection and testing of self-supporting
aluminium dome roofs for fixed roof tanks.
Self-supporting aluminium dome roofs are fabricated as three-dimensional spatially trussed
structures and consist of a supporting structure, which is composed of aluminium extruded sections,
jointed in the nodes by special high tensile bolted joints. The enclosed areas are covered with thin
aluminium sheets, held by a clamp fastening forming a very light self-supporting roof construction
with an individually designed load bearing capacity. The structure of the dome roof is attached to
and supported by the tank shell at equidistant mounting points around the perimeter of the tank
shell.
NOTE Self-supporting, aluminium dome roofs can be attached to new tanks and also to existing tanks.
Key
1 Air vent
2 Steel tank
3 Aluminium profile
4 Aluminium panel
5 Manhole
Figure S.1 — Typical aluminium dome roof on a steel tank
S.2 Design and construction requirements
S.2.1 General
When self-supporting aluminium dome roofs are specified for new tanks, the specific design of the
aluminium roof shall be taken into consideration in the design of the tank as follows. The
magnitude and direction of the forces acting on the tank as a result of the roof loads, together with
details of the roof-to-tank shell attachments shall be supplied. In addition, stiffening rings at the top
of the ta
...