Introduction of the Cost-Efficient Pennguard 88 Lining System

Project overview

W-Solutions supplied a specially developed Pennguard 88 lining solution for the new LP1 chimney constructed by our longstanding customer CRI of Milan.

The project required a durable corrosion-protection system suitable for a chimney operating downstream of a flue gas desulphurisation system. At the same time, strict budget limitations made the cost of the lining an important consideration.

After evaluating the anticipated operating conditions and commercial requirements, Pennguard 88 was developed and introduced as a cost-efficient lining system specifically designed for this FGD chimney application.

The lining was installed in 2026, providing the new chimney with durable protection while delivering substantial savings compared with more costly alternatives.

Project details

• Project: LP1
• Application: New industrial chimney
• Operating environment: FGD chimney
• Chimney contractor: CRI, Milan
• Lining system: Pennguard 88
• Installation year: 2026
• Project focus: Durable corrosion protection at a reduced total lining cost

The challenge

Chimneys operating downstream of an FGD system are exposed to a demanding internal environment. Although flue gas desulphurisation reduces atmospheric emissions, the process can create highly corrosive conditions within the chimney.

Low flue-gas temperatures can lead to condensation on the internal steel chimney flues. This condensate contains aggressive acidic components attacking the steel/concrete and shortening the service life of the chimney.

A suitable lining therefore had to provide reliable protection under the anticipated FGD operating conditions.

The technical solution also had to satisfy the project’s strict budget requirements. The challenge was not simply to identify a lining capable of resisting the operating environment, but to develop a solution that achieved the required durability without making the overall chimney construction uneconomical.

A solution developed around the application

W-Solutions assessed the operating environment, chimney design and commercial constraints as an integrated engineering challenge.

The industry standar, Pennguard 55 was over qualified for this application and could have increased the project cost without delivering proportional additional value. Conversely, selecting a lower-cost system without considering the actual exposure conditions could have introduced an unacceptable long-term corrosion risk.

The solution therefore had to balance:

• Chemical resistance
• Resistance to acidic condensate
• Compatibility with FGD chimney operation
• Long-term durability
• Installation practicality
• Chimney-design requirements
• Initial investment
• Lifecycle value

Based on these requirements, W-Solutions developed and introduced Pennguard 88.

Introduction of Pennguard 88

Pennguard 88 was designed as a durable and cost-efficient lining system for the specific operating conditions of the LP1 FGD chimney.

The system retained the essential corrosion-protection principles  of Pennguard 55 while optimizing the budget cost of this particular application.

This application-specific approach avoided unnecessary project costs and provided a more commercially efficient solution than simply specifying the most extensive available lining system.

Pennguard 88 offered the project an effective balance between:

• Performance under FGD operating conditions
• Long-term corrosion protection
• Efficient material use
• Practical installation
• Reduced capital cost
• Best lifecycle cost of all options

Its introduction allowed the chimney to receive a technically appropriate lining while remaining within the project’s restricted budget.

Cooperation with CRI

The LP1 chimney was constructed by CRI of Milan, a longstanding customer.

The established relationship between the companies supported efficient technical coordination throughout the project. Chimney design, lining requirements and installation considerations could be evaluated together, allowing the selected system to be incorporated into the new construction in a practical and coordinated manner.

This cooperation was particularly important because the lining was not treated as an isolated product. It formed part of the complete chimney design and had to be compatible with the construction sequence, substrate and anticipated operating conditions.

By involving lining expertise in the project, potential compatibility and constructability issues could be addressed before they affected installation.

Engineering for lifecycle value

The lowest initial-cost lining is not necessarily the most economical solution over the operating life of an industrial chimney. Premature lining deterioration can lead to inspections, repairs, unplanned shutdowns and damage to the underlying structure.

At the same time, a lining system should not be over-specified where a more efficient design can safely provide the required performance.

Pennguard 88 was developed to address both considerations with over 30 years of experience with the Pennguard 55 system. The system was engineered to provide dependable protection in the LP1 operating environment without adding unnecessary material and installation costs.

This resulted in substantial project savings while preserving the durability required for an FGD chimney application.

Installation in 2026

The Pennguard 88 lining was installed in the new LP1 chimney in 2026.

Because this was a new-build project, the lining activities could be coordinated with the chimney-construction program. This allowed installation requirements to be considered as part of the overall construction sequence rather than being addressed after completion of the chimney.

Correct coordination supported:

• Efficient access to the work areas
• Appropriate substrate preparation
• An organized installation sequence
• Quality control throughout the lining work
• Integration with the chimney-construction schedule
• Reduction of avoidable delays and additional costs

The completed lining provides the internal chimney surfaces with corrosion protection designed for the anticipated FGD operating environment.

Project result

The LP1 project demonstrates how application-specific engineering can provide both technical and commercial value.

By evaluating the actual operating conditions and budget restrictions, W-Solutions developed and introduced Pennguard 88 as a lining system tailored to this FGD chimney.

The resulting solution:

• Met the project’s corrosion-protection requirements
• Was designed around the anticipated FGD operating conditions
• Provided a durable lining for the new chimney
• Supported an efficient installation process
• Reduced the cost of the lining solution
• Helped keep the project within its commercial constraints
• Delivered improved lifecycle value without unnecessary over-specification

The lining was successfully installed in 2026 as part of the new chimney constructed by CRI.

Services provided by W-Solutions

• Review of the chimney operating conditions
• Assessment of the expected corrosive environment
• Application-specific lining engineering
• Development and introduction of Pennguard 88
• Technical coordination with CRI
• Lining-system specification
• Installation support
• Quality assurance and quality control
• Project coordination

Key project achievements

• New Pennguard 88 lining system introduced
• Solution specifically engineered for an FGD chimney
• Durable corrosion protection achieved
• Project budget restrictions successfully addressed
• Substantial lining-cost savings realized
• System integrated into a newly constructed chimney
• Successful cooperation with longstanding customer CRI
• Lining installed in 2026

Conclusion

The LP1 project shows that an industrial chimney lining should be selected on the basis of its real operating environment—not by automatically applying a standard specification to every project.

Through close cooperation with CRI, W-Solutions developed a lining solution that balanced corrosion resistance, durability, installation requirements and budget constraints.

The introduction of Pennguard 88 made it possible to protect the new LP1 FGD chimney with a purpose-designed system while substantially reducing project costs.

This combination of application-specific engineering and commercial awareness is central to the W-Solutions approach: providing the right level of long-term protection for each individual asset.

Application-specific lining solutions

W-Solutions develops corrosion-protection solutions for new and existing industrial chimneys, flues and ducts.

By considering operating temperature, flue-gas chemistry, condensation risk, substrate, construction method and budget, we help clients select a lining system that delivers dependable protection and competitive lifecycle value.

Contact W-Solutions to discuss the most appropriate lining system for your new chimney or rehabilitation project.