EN 14015

Overview

EN 14015 is the European standard for the design and construction of above-ground, flat-bottom, welded steel tanks used for storing liquids at ambient temperatures. It is widely considered the European equivalent of API 650.

Region: Europe

Tank Type: Vertical, flat-bottom

Pressure: Up to 500 mbar (7.25 psi)

Construction: Field-erected

Key Features

European equivalent to API 650
Designed for atmospheric and low-pressure storage
Applicable for large-diameter storage tanks
Supports various roof configurations
Focus on structural integrity and safety

Design Parameters

Tank diameter range: 1 m to 60 m
Operating pressure: up to 500 mbar
Vacuum design: up to −5 mbar for fixed roof tanks
Ambient temperature liquid storage
Wind load design per Eurocode EN 1991-1-4
Seismic design per EN 1998-4

Structural Considerations

Shell thickness design based on hydrostatic pressure
Roof design (fixed cone, dome)
Bottom plate requirements
Wind girder and stiffening rings

Installation & Tolerances

Settlement monitoring requirements
Out-of-plumb tolerance control
Foundation and base preparation
Field erection procedures

Applications

Petroleum and petrochemical storage
Water and chemical storage
Industrial liquid storage systems
Tank farms and terminals