One of the main areas of Green Line Offshore & Marine is the design, service and delivery of both fully assembled units and the supply of components and parts for repairs and replacement of previously worn ones.
Sales markets
Design, manufacture and supply of remote mooring device
- Production and supply of VPU
- Main components
- Rent of VPU
- Stages of project management
- Supply of components
Production and supply of VPU
We are committed to providing innovative solutions that solve the complex challenges associated with offshore oil transfer operations. We recognize that the maritime industry is constantly evolving and strive to stay ahead of the curve by using the latest technology and best practices to develop new and innovative solutions.
We partner with our clients to identify their unique needs and challenges, and then develop customized solutions to meet their specific requirements. Our commitment to quality is unparalleled in the industry. We prioritize safety, reliability and performance at every stage of design, manufacturing and installation.
Our team of experienced engineers and technical experts maintain strict quality controls to ensure our products and services meet the highest standards. With Green Line, customers can be confident they are receiving the highest quality products and services in the industry.
As a leading engineering company in the offshore industry, Green Line specializes in the design, manufacture and installation of buoy terminals that meet the highest standards of quality, safety and efficiency.
We are committed to continuous improvement in all aspects of our business, from design and production to installation and ongoing maintenance. Using the latest technology and industry best practices, we strive to achieve superior results that maximize the value of our clients offshore assets.
Since its founding, Green Line has been cooperating with many reputable international companies, implementing many projects in the interests of large national companies, and therefore, over the years, many partnerships have emerged with leading manufacturers of such equipment in the world.
Green Line provides comprehensive supply services that cover a wide range of TPU units and parts, as well as their piping. With in-depth knowledge and extensive experience, Green Line is committed to providing the highest quality materials and services at the most competitive price. Thanks to our experience, we can help the customer choose equipment at the best price and quality. The Green Line procurement service is focused not only on saving the customer’s money, but also on ensuring maximum returns for the company in the field of project optimization. This takes into account factors such as quality, reliability, delivery speed and supplier reputation.
Green Line is committed to becoming a leading provider of terminal solutions for offshore oil transfer operations. We are committed to helping our clients achieve their business goals through our experience, innovation and commitment to excellence.
Buoy with rotating part and equipment
The buoy body is a circular, fully welded steel structure, divided into a minimum of seven (minimum six radial and one central) parts, separated by radial bulkheads. The bottom is equipped with a skirt and accommodates 6 (six) anchor chain stoppers. On the upper deck, a machined support structure for the main roller bearing is built into the center well housing structure.
The welded plate turntable has a box-shaped structure and is mounted above the buoy body using a main roller bearing. In general, a turntable includes the following elements: a mooring platform, a pipeline platform, a ballast platform and a central turntable.
Mooring ropes and anchor system (piles and chains)
Six anchor chain stopper legs connect in the outrigger hull skirt to provide operation of the chain stopper. To attach an external point mooring, six anchor supports without spacers are installed in the anchor chain stoppers. The anchor system includes 6 piles.
Media transfer system including subsea and floating hoses
Components: Floating hose system (floating hose, break couplings, cam couplings, ball valves, etc.), Buoy body piping system (pipeline, swivel, valves, pipe compensator, etc.), Subsea hose system (subsea hoses, floats, etc.), Terminal manifold system (pipelines, remote controlled ball valves, etc.)
Tanker mooring line system
The length of the mooring line, including the rope and the chain in the wrap, is determined so as to maintain the distance between the CALM mooring buoy and the bow of the tanker. During unloading operations, the mooring line will be constantly tensioned by the assistance of a single tug attached to the stern of the tanker and pulling the tanker away.
When idle (without unloading), the cable remains attached to the CALM mooring buoy. Provision should be made to protect the cable from snagging/damage when it rubs against the CALM buoy and other devices. You also need to ensure that the ends of the disconnected anchor cable do not submerge in the water.
Terminal Manifold
The terminal manifold provides a connection between the mooring buoy and the pipelines via subsea hoses. It is a network of pipelines located on a metal structure. Terminal manifold components: piping, support structure, cage.
Control system for remote point berths VPU
The control system for remote point berths of the SPM is developed in strict accordance with international and local norms and standards. Solar panel system, Navigation equipment including signal light, fog horn, radar reflector, Wireless system, RTUa/RTUB control unit
Pressure sensor, temperature sensor, scraper sensor, etc., Mooring rope tension test system, PTU control unit, MTU control unit, Hydraulic power unit, Control cable
Rent of VPU
Engineering
We carry out any engineering design or calculations related to marine mooring systems. Our design team will work closely with the customer to provide solutions that meet each customers needs.
Assembly
Our team consists of highly qualified and motivated personnel who are able to carry out all work related to the manufacture and design of buoy systems.
Installation
Our marine engineers supervise the installation and commissioning stages of each project.
Manufactured in St. Petersburg, Remote Mooring Devices ordered by Green Line can be rented for a long period of operation complete with hose equipment; for more detailed information, please contact the Green Line Offshore & Marine Department.
Renting a VPU from the Green Line company eliminates customer problems associated with the servicing of the VPU, since the equipment is replaced with new equipment during each rental period. All supplied equipment is certified by RMRS. Green Line pays great attention to quality and reliability in all its services. This commitment ensures that projects are completed to the highest standards. The production time of the VPU after approval of the technical documentation is 8 months
The company Green Line is the first in the world to have reengineered the "classic" construction method for manufacturing FPSOs (Floating Production Storage and Offloading units) and can offer the customer delivery of the FPSO via road transport to any port where final assembly will take place. This solution will allow the customer to eliminate sea transportation and reduce a number of logistics costs. The transportation is carried out using standard shipping containers, eliminating the need to use specialized transport and avoiding damage to road surfaces.
Project management
Relying on the assistance of major partners, Green Line Company implements the project under a single consolidated contract, starting from the design and procurement stages to construction and commissioning of the facility.
An example of the main stages of the Green Line company work on projects for the development, manufacture and supply of VPU:
First stage: Receiving and placing an order
At the first stage, a legal review of contractual obligations is carried out, preliminary preparation and signing of primary contracts with subsuppliers takes place, as well as the approval of bank guarantees and the allocation of a budget for the implementation of the project.
Second stage: Selecting a separate team to work on the project
After signing the contract and transferring the project to the Project Implementation Department, each project for the production of VPU is assigned a separate number of employees who monitor the manufacturing process 24/7. By agreement with the customer, it is possible for Green Line employees to be located directly at the customer’s office to carry out more efficient work on the project.
The Project Manager has been managing offshore construction projects for over fifteen years. Team members have at least ten years of experience in similar projects. Integrated offshore construction project management system: quality management system, HSE system, planning management system, document management system, etc.
Stage three: Development of design documentation
Green Line employs engineers in designing VPU systems and has extensive experience in designing offshore facilities. To develop new VPU assemblies or piping, Green Line engages a partner company with a staff of over 200 designers who have extensive experience in similar projects.
Stage four: Coordination of documentation with the customer and RMRS
The design team has many years of experience in designing and coordinating working documentation for offshore facilities, in particular, remote berthing systems (SBUs). The team is highly qualified and includes specialists in all relevant SBU design disciplines, including mooring analysis, riser analysis, terminal manifold static analysis, pile foundation analysis, structural design, structural strength calculation, process piping, mechanical, electrical, hydraulic systems, etc.
Stage Five: Coordination of final working drawings
For the development of drawings and calculations, Green Line uses a range of software, such as: AUTOCAD, KOMPAS: Design drawings ANSYS and AQWA: Hydrodynamic analysis, motion analysis, mooring analysis Solidworks: Design drawings MSC Patran and Nastran: Calculation and analysis of structures Hammer V8i: Flow analysis in pipelines DNV Sesam: Stability analysis Solidworks Electrical: Design of the electrical part
Step Six: Quality Control Plan/ITP/PQR/WPS
With quality managers on staff, the company continuously follows the agreed production plan and is present at all stages of testing.
Step Seven: Purchasing Materials
For the production of VPU, Green Line purchases only high-quality materials; suppliers are audited on an annual basis.
Stage Eight: Making the Buoy Body, Turntable, and Chain Stoppers
In agreement with the customer, Green Line manufactures the main components both at its production facilities in St. Petersburg or Kaliningrad, and in Holland or the UAE at highly qualified workshops with extensive experience in manufacturing such structures.
Step Nine: Painting the Finished Parts
Green Line uses advanced paint and varnish components from Hempel or Luton. The thickness of the primer and paint coating is the same on all surfaces and corresponds to the agreed Technical Task.
Stage Ten: Delivery of main bearings, hinge joints, loose parts
Step Eleven: Assembly and Internal Testing
Stage Twelve: Final Acceptance Tests with the Customer
Step Thirteen: Packing and Shipping
Transportation of finished products is carried out both by the customer and by the Logistics Department of Green Line, which has many years of experience in shipping similar equipment all over the world.
Hose equipment
In our business, we take great pride in the quality and reliability of our industry-leading products and services from our partners, and we are confident that they exceed industry needs. Our commitment to exceeding customer expectations and delivering an unrivaled experience is key to ensuring that we deliver a high return on our customers’ investment, leading to more successful partnerships and complete customer satisfaction.
With our commitment to quality, our partners products not only meet but exceed the standards used in our industry, Green Line is proud to be a partner of API Q1, API 17K, ISO 9001:2015 certified hose manufacturers and PED 2014/68/EU accredited pressure equipment manufacturers.
API 17K Hoses
Specialized design and testing methods developed by qualified third party engineers complement our years of field experience. This enables us to design hoses for a specific service life in customer defined conditions. The API 17K line of marine unloading hoses is designed and manufactured to provide a solution for the most demanding service conditions, typically exceeding the industrys most advanced specifications.
Why Choose API 17K Hose?
• Solutions with a wide selection of bore diameters up to 30 inches
• Design life of up to 20 years
• Construction with smooth internal surfaces provides pumping cost savings (compared to traditional bonding-free solutions)
• Installation cost savings (compared to steel or carbon lines)
• Higher design pressure
Mooring ropes
Green Line is one of the few approved and certified suppliers of single point mooring ropes to a number of Russian facilities, the company connects the supply of ropes, shekels and shekels in one bundle for the largest oil and gas companies with midstream hubs.
Ball valves
Green Line supplies Subsea Ball Valves according to API 6DSS
• With one or two balls
• Side or top entry
• In sizes ranging from ½ to 64
• Pressure class from 150 to API 6A 15.000
Green Line is the only company in Russia that can manufacture API 6DSS ball valves in Russia. A special design is developed for each application, guaranteeing the required level of performance throughout the entire predicted service life of the valve.
A dedicated team designs, manufactures and tests custom-made valves for subsea applications (shallow or deep water). Rigorous quality control and testing, as well as advanced design tools (FEM, Fatigue Analysis, CFD, etc.) contribute to the improved performance of the valves. In-house testing facilities are available to perform hydrostatic and gas tests up to 1500 bar.
Swivel Block and Main Bearing
Based on proven technology, industry best practices and extensive design experience, Green Line’s custom design approach using modular components allows for a wide range of pipe configurations with one, two and three way swivels.
Using the latest sealing and bearing systems, the slewing buoy provides full rotation while handling a wide range of products including oil, LPG, water and other liquids and can be equipped with electrical and hydraulic lines. With the bearing and seal system integrated into the modular central slewing hub, the upper or lower slewing assembly or slewing hub can be easily removed and repaired during the design life or replaced as design requirements change.
This modular system also allows Green Line to perform static and dynamic factory acceptance testing of the bearing seal system while the remaining upper and lower assemblies are manufactured and machined, reducing lead times and risk. It also provides greater flexibility in the design of rotary interfaces, as Green Line offers single, dual, and triple channel designs with fluid channel diameters of 16 inches and larger.
Precision sealing systems allow for the transfer of a variety of fluids including oil, gas and water, and the VPU swivels can also be powered by electricity, fibre optics and hydraulics using electrical slip rings and/or multi-way hydraulic swivels. The swivel block is a critical component in the buoy design as it enables the transfer of fluids, electrical power and fibre optics between the stationary geostationary portion and the rotating vane portion of the system.
Pivot pipes can vary in complexity, and at Green Line we design and manufacture our own swivel pipes in our St. Petersburg facility using proprietary hydraulic, electric and fiber optic swivels. Our designs include crude oil, gas, pneumatic and high pressure toroidal hydraulic swivels for a variety of applications.
Chains and bridles
We strive to exceed our customers expectations by providing cost-effective and efficient mooring solutions through quality products and services.
Marine chain is a specially designed chain used for a variety of marine applications, particularly anchoring and mooring. These chains are designed to withstand the harsh conditions of the marine environment, including corrosion, abrasion and high loads.
Winches
Green Line is ready to supply various winch systems, both of its own production, made in St. Petersburg, and winches from leading global manufacturers. A rope winch is a type of drum winch, on which a rope is wound. The drum is designed for lowering, extracting and storing the rope. During operation of the winch, the drum rotates in such a way as to wind the rope in and out.
The resulting tension allows you to lift or pull a heavy load. Our winches come in a variety of designs, from electrically powered winches to hydraulically powered winches. We can also design and build a custom winch to meet your specific lifting and pulling requirements.
Breakaway coupling and sleeve valve
Green Line installs the best hose valves and breakaway couplings on its filling systems.
The following features can be highlighted among the supplied valves:
• The valve petals are equipped with nitrile sealing rings and feature an overlapping design that ensures minimal leakage.
• New titanium alloy bolts increase service life and provide consistent tensile strength.
• On-site reassembly after activation.
• 5-year maintenance intervals, as well as preventive maintenance and on-site testing.
Full bore – no obstructions in the flow path with zero pressure loss
• Central sleeve protects the valve petals from product contamination
• Innovative damping system
• Passive operation, no external power source required
• Equipped with flanges for direct bolting to the hose flange
