Paraffin Storage Tanks – Chemical Sector (Turin Province, Italy)

Sector: Chemical / Industrial Storage
Location: Turin Province, Italy
Years of Completion: 2021–2022
Client: Undisclosed (major player in the chemical and energy sector)

Project Objective

CITAL was commissioned to design, fabricate, deliver, and install six stainless steel storage tanks for paraffin, as part of a new tank farm at an industrial plant in Northern Italy. Each tank was equipped with a spiral-type bottom heating coil to maintain optimal product temperature and viscosity under all weather conditions.

Technical Specifications

Storage Tanks:

• Total units: 6
  • n.2 tanks of 1,617 m³
    • Dimensions: Ø13,100 mm × H 12,000 mm
    • Weight (empty): 46,000 kg
  • n.3 tanks of 2,290 m³
    • Dimensions: Ø13,100 mm × H 17,000 mm
    • Weight (empty): 64,000 kg
• Material: Stainless steel EN 10028-7 1.4301 (AISI 304)
• Design codes:
  • EN 14015:2004 – primary design
  • API 650 13th Ed. + Errata 2021 – anchoring calculations
  • EN 13445-3:2021 – heating coil design

Bottom Heating Coils (per tank):

• Material: AISI 316
• Type: Spiral coil installed at the tank bottom
• Total pipe length: ~362 meters per tank
• Pipe dimensions: Ø60.3 mm × 3 mm wall thickness
• PED Compliance: Category IV – Module G

Accessories and Ancillary Structures

• Full external insulation
• Access steelwork: vertical ladders, upper platforms, and handrails
• Flanged nozzles for instrumentation and line connections

Key Strengths

• Integrated design in accordance with European and international codes
• Certified components for handling viscous, temperature-sensitive fluids
• Full material traceability and quality assurance
• On-site installation with complete support structure supply
• Proven CITAL expertise in large-scale tank farms and thermal systems