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| The Project |
Milford Haven Dry Dock
Milford Haven Ship Repairers has become a name that is trusted and respected throughout the industry. An ongoing programme of investment has enabled the company to extend its dry dock facilities to a wider range of customers.
The project involved remedial work to the 19m beam Dry Dock which is situated within one of Europe’s top ports. The dry dock accommodates vessels up to 140 metres in length and 19 metres in beam. Facilities are also available for the dry docking of two vessels simultaneously. |
| The Challenge |
The dry dock was leaking sea water in through a side wall. WS Atkins of Cardiff contacted TAM to investigate the possibility of controlling an extensive water inflow through rock fissures at the base of the dry dock. Previous attempts to control this problem using conventional materials had failed due to the material's inability to cope with high levels of water flow. This had resulted in continuous loss of the grout at the face of the structure.
Considerable costs were continually incurred through the use of water management pumping systems to provide a suitable working environment / working practice. In addition, the extensive water inflow was causing other operational problems. |
| The Solution |
WS Atkins approached TAM to discuss the use of water reactive resins to manage the problem.
TAM responded and undertook an initial site investigation with WS Atkins consultants and the Port Authority to determine the correct material and procedure. An outline proposal based on the information provided was then compiled and submitted to WS Atkins for approval.
Considering the degree of water ingress into the base of the dry dock, a two component, fast reactive polyurethane was chosen as the most suitable resin. TamPur 125, a highly expansive, fast reacting resin was introduced into the rock fissure via a twin piston pneumatic pump capable of delivering high volumes of resin. Delivering the resin into the fissure at strategic locations enabled the resin to partially react and form, importantly, avoiding resin wash out at the face of the dry dock. In addition, wooden boards were bolted along the face of the dry dock wall and a filtration fabric used to seal the joints. Utilising the board and the fabric also assisted in reducing resin loss which resulted in a totally sealed section. |
| TAM Contributory Success Factors |
TAM’s contribution
- Expertise and experience
- Technically advanced materials
- Problem diagnostic and consulting input
- Application techniques to get successful results
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| Project Outcome |
Working in conjunction with our Specialist Contractor, we successfully managed the water ingress within hours of the grouting operation. The area was injected over the next few days to tighten up smaller areas of leakage that had appeared in other areas of the structure due to water transfer. At the end of the grouting works, WS Atkins and the Port Authority confirmed the complete success of the operation.
Milford Haven Ship Repairers now has a fully operational dry dock which supports a varied client base including some of the industry’s biggest names. |
| Client Comment |
“We relied on TAM's technical expertise and past experience to put together a working solution for our client. “We realised we had a problem and needed to call in the experts. We needed people who understood the issues and could deal with the growing problem. TAM delivered an excellent cost effective solution that delivered highly successful permanent results within hours of application”
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