Design, Fabrication and Installation of Piping for a Deaerator Pressure Vessel

Overview

Pructon was engaged by Rio Tinto to replace an existing 14-ton deaerator vessel that had failed. The deaerator plays a critical role in removing dissolved gases from boiler feedwater, protecting steam systems from corrosive damage.

Scope of Work

• Demolition: Removed the existing deaerator vessel, including all associated welded pipework and grating.
• Design and Engineering: Undertook the engineering and design of a new pipe network, which involved finite element analysis to ensure optimal performance and safety.
• Off-Site Fabrication: Fabricated the required pipework off-site, ensuring quality and efficiency before installation.
• Installation: Installed the new deaerator vessel along with the associated pipework, ensuring all components met the new design specifications.
• Welding and Cladding: Conducted pressure welding of stainless carbon piping and provided cladding to protect the pipework.
• Commissioning: Completed the commissioning of the new vessel, ensuring it operated effectively within the plant's steam systems.

Outcomes and Benefits

• Timely Completion: Successfully completed the project within a tight schedule during the Cogen Outage plant shutdown, minimising downtime.
• Quality Assurance: All welds were thoroughly inspected and met stringent quality requirements, ensuring the integrity of the installation.
• Client Satisfaction: Delivered the project according to the client's design specifications, reinforcing Pructon's commitment to meeting client expectations and industry standards.
• Enhanced System Performance: The new deaerator vessel effectively removes dissolved gases, improving the reliability and longevity of the steam systems.