Pile condition Survey at Machaire Rabhartaigh, Ailt an Chorráin and Árainn Mhór Piers

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1. At a glance

2. Scope of Work

This procurement seeks experienced diving contractors to conduct pile condition surveys at three specific piers in County Donegal: Machaire Rabhartaigh (Magheroarty), Ailt an Chorráin (Burtonport), and Árainn Mhór (Arranmore Island). The primary objective is to assess the current condition of existing steel sheet piles, identify any deterioration, and determine necessary repairs.

The survey will cover the piles from the top of the capping beam down to seabed level. Diving operations are a mandatory component of the work. Key activities and requirements include:

• Pile Condition Assessment: Surveying all sheet piles within specified extents, marked in an appendix.
• Thickness Measurement: Using ultrasonic measurement equipment to determine the residual thickness of the piles.
• Measurement Intervals:
• Readings at each in-pan and out-pan from capping beam to seabed at maximum 1-meter spacings.
• Additional readings at the low water splash zone and 500mm above and below this zone for each pile.
• Defect Identification and Recording:
• Where holes or defects occur, or where thickness is less than 6mm, the defect or area should be recorded until the thickness exceeds 6mm.
• All identified defects must be referenced, photographed, and their dimensions recorded in the final report.
• Cleaning: The dive team must thoroughly clean away all marine growth to allow examination of all elements of the structure, both above and below water.
• Reporting: Three separate final reports are required, one for each pier. Each report must identify each pile, detail thickness readings as specified, and include all defects with supporting photographs.
• Project Supervisor (Construction Stage) Role: The successful contractor will be required to accept and carry out the role of Project Supervisor for the Construction Stage (PSCS).
• Compliance: All diving operations must comply with the Safety, Health and Welfare at Work (Diving) Regulations 2018.
• Volume Estimates:
• Machaire Rabhartaigh (Magheroarty): Approximately 564 piles (388 for in/out pans, 176 for out pans only).
• Ailt an Chorráin (Burtonport): Approximately 143 piles (out pans and in pans) plus 30 double piles supporting the main pier and supports.
• Árainn Mhór (Arranmore) Island: Approximately 170 piles (out pans and in pans).
• Completion Deadline: All survey works and final reports must be delivered in advance of October 2026 due to funding constraints.

3. Background & buyer context

Donegal County Council is procuring these pile condition surveys to assess the structural integrity of key maritime infrastructure. The project is driven by the need to identify deterioration and necessary repairs at Machaire Rabhartaigh, Ailt an Chorráin, and Árainn Mhór piers. The urgency is linked to funding constraints, necessitating completion before October 2026. The procurement is being conducted under a Request for Quotation (RFQ) process. Donegal County Council is the Contracting Authority, and it has self-appointed itself as the Project Supervisor for the Design Process (PSDP). The selection of the Project Supervisor for the Construction Stage (PSCS) will be based on prequalification and past experience, with the successful contractor expected to fulfil this role.

4. Eligibility & selection criteria

Bidders must meet the following minimum requirements to be considered:

• Turnover requirement: Not specified for this tender.
• Insurance:
• Employers Liability: €13,000,000.
• Public Liability: €6,500,000.
• Certifications:
• Compliance with Safety, Health and Welfare at Work (Diving) Regulations 2018 is mandatory.
• Evidence of carrying out the role of Project Supervisor Construction Stage is required.
• Past experience:
• At least two examples of projects with similar works carried out within the past 5 years. Details must include project extent and the bidder's specific role and responsibilities.
• Personnel: Not specified for this tender.
• Geographic / facility constraints: Not specified for this tender.

Additionally, bidders must confirm:

• Tax compliance.
• Not being bankrupt, guilty of corruption, fraud, money laundering, or membership of a criminal organisation.
• Not involved in child labour or human trafficking.
• Full compliance with all statutory obligations.

5. Award criteria & scoring

The evaluation process involves a two-stage assessment:

Criterion