( Kaieteur News ) – Fresh concerns have surfaced over the quality of concrete used in the foundations of Guyana's multi-billion-dollar Gas-to-Energy (GTE) project, with allegations that critical structural elements at the Wales, West Bank Demerara site have failed to meet required engineering standards.
The concerns center on the concrete piles driven into the ground and the concrete poured for the foundations of the Natural Gas Liquids (NGL) plant and the 300-megawatt power plant, the two main components of the project the government says will reduce electricity costs by 50 per cent.
Under the terms of the lump-sum, US 22 million in public funds to serve as the "Owner's Engineer.
Information obtained by this publication from sources close to the multi-billion-dollar project, including project insiders and sub-contractors, points to potential structural integrity challenges. According to these sources, concerns have been raised regarding the concrete piles driven into the ground and the concrete poured for the foundation works at the site.
This publication understands that the concrete failure was flagged by specialised testing conducted on-site by Beston Consulting, an engineering firm involved in the project. Beston was reportedly hired to conduct rigorous, real-time concrete testing.
According to sources familiar with the site operations, tests conducted at this laboratory have flagged instances where concrete pours failed to meet the strict structural and compressive strength-requirements specified for the project.
Technical officers advised that in heavy industrial construction, foundation concrete must meet precise design strengths to support massive machinery, including heavy industrial gas turbines and high-pressure processing facilities. Any deviation from these standards risks uneven settlement, structural cracking, and long-term operational hazards.
The reported findings raise urgent questions about the extent of the concrete deviations identified by Beston's on-site lab and the reason for the lack of public disclosure or technical updates regarding these quality control challenges from the Office of the President, the Office of the Prime Minister, the Ministry of Natural Resources as well as the GTE Taskforce.
The alleged failure of these critical foundation elements is particularly significant given the history of the Wales site.
Guyana is already footing the bill for multiple delays and cost disputes with the contractor again raising questions about what the financial impact of this disaster is likely to be if indeed critical foundation elements are failing to meet strength specifications.
To understand the gravity of these reports, this publication consulted civil and mechanical engineering experts specialising in power plant construction. Their assessment of the technical risks paints a worrying picture of what happens when turbine foundations fail to meet strict specifications. According to sources, "Industrial gas and steam turbines are incredibly delicate, highly engineered machines. They operate at extreme temperatures and rotational speeds exceeding 3,000 RPM. For these units to run safely, the concrete foundations supporting them must remain perfectly level, rigid, and completely free from differential settlement, meaning one side of the foundation cannot sink even a fraction of a millimeter more than the other."
Experts warn that even a microscopic misalignment of a turbine shaft, measured in microns, can have catastrophic consequences. It can trigger severe rotational vibrations, rapid bearing wear, and shaft fatigue. In a worst-case scenario, misalignment causes "blade rub"—where rotating blades spin out of balance and impact the stationary casing, causing catastrophic mechanical failure and the total destruction of a turbine worth tens of millions of dollars.
Furthermore, this newspaper was warned, "If a foundation is discovered to be defective after concrete has cured, the remediation is an engineering nightmare. Unlike a standard commercial building, you cannot simply patch a turbine foundation. Correcting a failed pour typically requires complete demolition of the massive, heavily reinforced concrete foundation block; chipping away cured concrete and dense rebar cages without damaging the underlying piles; re-driving piles or performing complex underpinning, followed by a complete repouring of the concrete."
According to industry specialists, such a remediation process can easily delay a project by 6 to 18 months and cost tens of millions of US dollars in direct construction costs.
This newspaper was told that if structural concrete is failing to meet specifications, it points to potential vulnerabilities in the overall Quality Assurance and Quality Control (QA/QC) protocols and supply chain management of the main Engineering, Procurement, and Construction (EPC) contractor, Lindsayca Inc.
Under the terms of the lump-sum, US 22 million in public funds to serve as the "Owner's Engineer." EIL's contractual mandate is to review designs, supervise construction quality, and act as the government's primary oversight body on the ground, specifically to flag structural anomalies and verify compliance. It is unclear whether EIL formally documented and reported these concrete testing failures to the GoG.
To date, official government updates have not pointed to any concrete strength issues or foundation concerns at the Wales site, focusing instead on high-level promotional materials.
Vice President Bharrat Jagdeo and Project Head Winston Brassington are being called upon to address these reported concrete quality issues directly, clarify the contractual liability of the prime contractor, and confirm what financial guarantees are in place to protect public funds.
Brassington and the Prime minister did not respond to messages seeking clarity on the situation up to press time on Thursday.
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