Nyrstar Tank and Pit remediation

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Project Brief

RMK Civil was engaged by Nyrstar to address two critical areas at their Port Pirie site:

1. Contaminated Pit: The concrete wall faces and steel reinforcements had been contaminated, posing a risk to structural integrity.
2. Tank Remediation: A tank required hydroblasting to remove waste and debris, followed by relining to restore functionality and durability.

The scope of work included hydroblasting, steel reinforcement, concreting, and applying protective coatings to ensure the structures' longevity.

Solution

To tackle the challenges, RMK Civil deployed a systematic and efficient approach:

• Hydroblasting: High-pressure hydroblasting was used to remove all contaminated waste and debris from the pit and tank, providing a clean surface for further remediation.
• Steel Reinforcement: The contaminated steel in the pit was replaced and reinforced to restore its structural stability.
• Shotcrete Application: The pit walls were thickened using shotcrete, improving durability and enhancing the structure’s resilience against future wear.
• Protective Coating: A high-performance protective coating was applied to the pit walls and tank interior to prevent future contamination and extend the lifespan of the structures.

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“Our key priority for the remediations work was first to ensure the safety of the site and everyone working on it, and secondly to deliver the project on time and on budget”

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Outcome

Both remediation projects were completed within the tight 30-day timeline, ensuring minimal disruption to operations at the Port Pirie site. The contaminated pit was restored to full structural integrity, and the tank was relined and coated for long-term durability. These solutions provided Nyrstar with improved operational reliability and a more secure working environment.