Case Study Overview
The construction of the container terminal was supported by four of Red7Marine’s jack up barges; the Haven Seariser 1, Haven Seariser 2 and the Haven Seariser 3 and the Haven Seajack.
At a glance
- Location: Port of Liverpool, Liverpool
- Plant used: Haven Seariser 1, Haven Seariser 2, Haven Seariser 3, Haven Seajack
- What we did: Red7Marine was the Marine Partner of Choice for BAM Nuttall when they constructed the piled combi-wall as part of the Liverpool 2 Dock Expansion that began in 2014.
The Challenge
The port of Liverpool has one of the largest tidal ranges in the UK coupled with an uneven riverbed profile. With an exposed estuary entrance, the weather was carefully monitored during the project to minimise any potential delays in vessel movements.
The Solution
The original method chosen by the client was to install the piles using the pile top drilling process. Red7Marine designed and fabricated two large modular piling gates to facilitate the installation of the tubular steel piles. The modular piling gates were installed on two jack up barges to allow uninterrupted progress during the pile installation. Due to local ground conditions and adverse weather, the method was eventually changed to install the piles in rock sockets. Rotary drilling rigs were loaded onto the Haven Seariser 1 and Haven Seariser 3 jack up barges, drilling out the rock sockets within casings before the tubular piles were installed and grouted in position.
The Haven Seariser 2 and Haven Seajack followed behind the other jack up barges to install sheet piles between the steel tubes forming the combi-wall structure and provide over water lifting where required.
Red7Marine were able to quickly respond and adapt the marine plant to reflect the change of installation method. Working closely with BAM Nuttall on a daily basis throughout the construction works allowed for a fully integrated approach to co-ordinate vessel moves and maximise utilisation of the marine equipment. Engineers at the head office supported the site team supplying revised deck plans, site specific assessments and stability calculations as and when required by the client.
Managing Director at Red7Marine, Nick Offord comments “This project is an excellent example of Red7Marine’s integrated consultancy, project planning and marine expertise when working in harsh marine locations. The site team operated to the highest safety standards throughout the project to support our client with a challenging project.”
Fast response
Red7Marine responded quickly to the requirements the project presented and changed the methods of installation to ensure the safe completion of work.
Integrated approach
Red7Marine liaised with the client on a daily basis throughout the construction in a fully integrated approach to coordinate the operations and vessel movement.
Bespoke plant
Red7Marine designed two bespoke large modular piling gates to facilitate the installation of the tubular steel piles.
SEE RELATED CASE STUDIES
Westminster Pier Extension
The Westminster Pier Extension allows more frequent River Bus services between Woolwich and North Greenwich to Westminster. The extension is a key part of the River Action Plan to improve TfL’s piers and increase capacity for passengers before 2020. Red7Marine designed and built a custom pile gate for the project. The barge was reviewed to support a 180t crawler crane for piling operations and was then further reviewed with an additional RH28 drill rig on board.
Brighton Marina
Phase 2
In order to accommodate a new luxury apartment block in Brighton, part of the marina needed to be reclaimed using sheet piled cofferdams. This would enable the water to be kept out and foundations to be built for the stunning seafront properties. Red7Marine supported the installation of a sheet pile twin wall cofferdam.
Oldbury
Red7Marine installed replacement Active Effluent Discharge Lines at Oldbury power station as part of the on-going care and maintenance works. Red7Marine’s previous project experience on similar projects consisting of works on subsea pipeline and outfalls at Bradwell and Sizewell nuclear power stations, positioned the company as the ideal marine partner for client, Magnox.
Emirates Cable Car
The Emirates cable car was installed to provide a pedestrian link across the River Thames between the Royal Docks and the Greenwich peninsula. Red7Marine worked with Bachy Soletanche in a joint venture to install the foundations for the one-kilometre long cable car using marine rotary bored piling.
Battersea River Pier
Red7Marine secured a contract at Battersea in December 2016 to install new tubular driven steel mooring piles for the Battersea Power Station river bus pontoon installation which is planned to be operational in Autumn 2017. Transport for London (TFL) decided to extend the river bus service after the number of housing developments at Battersea began to increase.
Middleton Sands Navigation Marker
This fast turn-around marine construction project involved the installation of a new tubular steel navigation marker pile at Middleton Sands, Barrow-in-Furness in 2017. The navigation marker was required to identify the sub surface obstructions and enable other vessels in the area to operate safely.
Weston-Super-Mare
The Red7Marine team was chosen to provide specialist marine plant and personnel to aid the redevelopment of the Weston-super-Mare Grand Pier after it was destroyed in a fire in 2008. Red7Marine supplied the Haven Seajack 4 assisted in the pier construction works. Its previous experience in pier and marina construction works made it the ideal project partner for this development.
Bradwell Power Station Barrier Wall Removal
Red7Marine is a leading provider of equipment for marine demolition and is skilled in dismantling structures that are beyond the reach of ordinary demolition contractors. In 2012, Red7Marine removed approximately 800 tonnes of steel in the Blackwater Estuary from the Bradwell nuclear power station water intake structure.
Fingringhoe Firing Ranges
Red7Marine installed scour protection and provided remediation on damaged sections of the flood defences to preserve areas of the salt marsh at the Fingringhoe firing ranges in Essex. Scour protection and remediation techniques are used to control erosion in both estuarine and the offshore environments.
