Remedial Burial Services NL

This qualification system shall cover the provision of remedial burial services in the Dutch North Sea. TenneT reserves the right to extend this scope of work to cover its assets in Belgian, British, German Norwegian and Danish waters in the future for cables which fall in the major responsibility of TenneT. For each requirement of remedial burial services of offshore or nearshore HV power cables the client will issue an invitation to tender/request for quotation (ITT) based on the contractual conditions which are published with this Qualification System. The technical requirements can vary in its nature, depending on the region, permit requirements, soil conditions, etc.

Qualification System for the Provision of Jack-Up Barges

This qualification system shall cover the provision of Jack-Up Barges in the German or Dutch North Sea.  The Clients understanding of a Jack-up Barge (JuB) is defined as any non-propelled or self-propelled marine vessel that is fitted with legs and a jacking system that provides the vessel with the capability to elevate the hull above the surface of the sea. Other industry terms used to identify jack-ups are Mobile Offshore Units (MOUs), Self-elevating Platforms (SEPs) and Lift Boats. For each requirement of a Jack-Up Barge the client will issue an invitation to tender/request for quotation (ITT). The Jack up Barge shall support scheduled and unscheduled maintenance campaigns at TenneT's offshore assets. The technical requirements can vary in its nature, depending on the scope of work the Jack-up Barge shall fulfil. In general the Client intends to use such units for crane operations and accommodation of personnel. Beside those main tasks several side tasks may be requested. A non-disclosure agreement (NDA) is to be concluded to protect the confidentiality of the client's information. Once the NDA has been received and considered complete, you shall be added as participant to the prequalification system and granted access to all questions and documents accordingly.  Please carefully read the "procedure guidelines" and follow the given instructions. *** The application for participation must be submitted electronically (in a standardized data format, such as PDF and MS Office format) exclusively via the  e-tendering platform, including all required information and supporting documents. Please use the templates made available in the questionnaires. *** The client is entitled to transfer the rights and obligations of the subject matter of the contract to a special purpose vehicle (NewCo), irrespective of whether third parties have already participated as shareholders in this project company, or only after any transfer of this master agreement to such a project participate. *** The contract(s) will be concluded without guaranteed minimum purchase quantities. *** Authorized to call for this framework agreement are also companies affiliated with the client within the meaning of §§ 15 ff. AktG. *** TenneT will only place call-off orders w.r.t. to this contract as soon and as long TenneT is in the full responsibility to purchase those demands. In cases of joined projects for which TenneT is not in full charge of provision of such vessels, the Contractor is not entitled to claim for providing such vessel services to TenneT.

Qualification System Marine Surveys

This qualification system shall cover the provision of marine geophysical, geotechnical and UXO surveys as well as IRM in the German North Sea and Wadden Sea (German EEZ and German territorial waters): • Lot 1 – Marine Geophysical Surveys Offshore • Lot 2 – Marine Geophysical Surveys Nearshore • Lot 3 – Marine Geotechnical Surveys Offshore • Lot 4 – Marine Geotechnical Surveys Nearshore • Lot 5 – General Engineering Survey – integrated geophysical and geotechnical survey and cable tracking Offshore • Lot 6 – General Engineering Survey – integrated geophysical and geotechnical survey and cable tracking Nearshore • Lot 7 – IRM Structural Inspections • Lot 8 – UXO Survey and ID&C Offshore • Lot 9 – UXO Survey an ID&C Nearshore • Lot 10 – UXO Survey Offshore • Lot 11 – UXO Survey Nearshore • Lot 12 – UXO ID&C Offshore • Lot 13 – UXO ID&C Nearshore Applicants have to answer the questionnaire in Mercell https://s2c.mercell.com/today/77318. The questionnaires give you an overview of the information and documents we need for the first part of the application process. Questions 1. “General Questions” and 2. “Health, Safety & Environment” are mandatory for all applicants. It is not necessary to apply for all lots. With regard to the individual lots, you only need to answer the questionnaires from 3. to 15. that apply to you. Even if you leave questions from 3.-15. unanswered, you can continue through the application process and submit your application. *** TenneT reserves the right to extend this scope of work to cover its in operation assets in Dutch, British, Norwegian and Danish waters in the future for cables which fall in the major responsibility of TenneT. For each requirement of survey services of offshore or nearshore power cables or offshore platform the client will issue an invitation to tender/request for quotation (ITT) based on the general survey conditions which are published with this Qualification System. The technical requirements can vary in its nature, depending on the region, permit requirements, soil conditions, etc. A non-disclosure agreement (NDA) is to be concluded to protect the confidentiality of the client's information. Please download the attached NDA and send the completed, stamped and signed document to the following email address: Jana.Gerlach@tennet.eu Once the NDA has been received and considered complete, you shall be added as participant to the prequalification system and granted access to all questions and documents accordingly. As a participant you have to pass the prequalification requirements to qualify as a bidder for upcoming ITTs. Please note that there is no schedule and no deadline for the participation in this qualification system. In the event of a requirement for survey services we are going to issue individual invitations to tender (ITT) to prequalified companies only. Please carefully read the Scope of Services and Procedural Guide once you have been added as a participant to the qualification system. The questionnaires will guide you through our requirements with regards to information and documents to complete the first part of the application process. *** The application for participation must be submitted electronically (in a standardized data format, such as PDF and MS Office format) via the Mercell e-Tendering Platform, including all required information and supporting documents. *** All attachments have to be submitted exclusively via Mercell Source-to-Contract (T77318) only. Please use the templates made available. *** Authorized to call for this qualification system are also companies affiliated with the client within the meaning of §§ 15 ff. AktG. *** TenneT will only place orders with respect to these general terms and conditions as soon and as long TenneT is in the full responsibility to purchase those demands. In cases of joined projects for which TenneT is not in full charge of provision of survey services, the contractor is not entitled to claim for providing such services to TenneT. *** Technical questions regarding the use of Mercell Source-to-Contract can be asked directly to the Mercell ServiceDesk: E-Mail: support-nl@mercell.com Phone: +31 (0)85-001 4593

Qualification System for "Consultancy Services"

Background and Objective of the Qualification System for Consultancy Services  Background TenneT TSO GmbH (TTG) is one of the top 5 transmission system operators (TSO) in Europe. TenneT is responsible for the operation, maintenance, and further development of the electricity transmission grid, in particular the 220kV and 380kV voltage levels in large parts of Germany. The grid extends from the Danish border to the Alps and, at around 140,000 square kilometres, covers around 40 percent of Germany's surface area. TenneT is accountable for the efficient transmission of electricity over long distances via around 13,500 kilometres of high-voltage lines. This requires continuous investments in maintenance and grid development projects to reduce interference and outage as far as possible and thereby ensure quality and stability. TenneT is hence responsible for several grid development and maintenance projects with national and international reach and notice. For TenneT, security and a stable and high network availability have the highest priority. To achieve this, the organisation must be managed in an efficient and targeted manner. Objective of the qualification system In the frame of extensive transformation processes, which are currently realised in TenneT, and which are planned to be continued, TenneT faces numerous strategic tasks and challenges in the foreseeable mid- and long-term future. For these purposes external consultancy support will be required. In front of this background, TenneT intends to set-up a Qualification system for non- technical “Consultancy Services”. Within this qualification system TenneT aims to proceed tender below and above the actual valid EU-tender threshold for services. Main focus point of the qualification system is the non-technical consulting that is needed for internal management functions that ensures the security of supply and further development of TenneT. In general, the qualification system shall cover all consultancy services for TenneT and its affiliated companies in the field of non-technical consultancy services. This includes all departments and its respective consultancy needs. The focus areas listed below provide examples of the use of consulting service providers but are not exhaustive. They merely provide an overview of the focus areas of consulting demand within TenneT. The specific demand is then tendered and communicated within the pre-qualified suppliers. TenneT aims to award consulting assignments only to pre-qualified partner but reserves the right to award consulting contracts outside the qualification system. Further details on the procedure and the scope can be found in the tender documents for the qualification system.

Rock Dumping Services

1. Introduction The Scope of Work (SoW) defines the requirements, methodologies, and deliverables for the provision of Rock Dumping Services, including the design, supply, installation, and verification of rock berms for the protection and stabilization of subsea cables, CPS, Foundations, and related offshore infrastructure. The services are to be executed at the designated offshore wind farm locations in the German North Sea sector, Baltic Sea Sector or any other european offshore wind farm location. 2. Objectives Protection of Subsea Assets: To protect subsea cables, cable protection systems (CPS), and foundations from environmental and operational risks, such as scouring, freespan, and mechanical damage. Stabilization: To ensure long-term stability and integrity of subsea infrastructure by installing engineered rock berms. Compliance: To execute all works in accordance with applicable international standards, project specifications, and client requirements. 3. Scope of Work 3.1 General Description The Contractor shall provide a complete service package, including but not limited to: Project management and engineering Design of rock berms and stabilization measures Procurement and supply of rock material Mobilization and demobilization of specialized vessels and equipment Execution of rock installation works Pre- and post-installation surveys Quality assurance and as-built documentation. 3.2 Project Engineering & Management Project Planning: Develop detailed project schedules, installation plans, and risk assessments. Design Services: Prepare or review CPS berm designs, including cross-sections, material specifications, and installation tolerances. The Contractor may advise on optimal design solutions from an operational perspective. Quality Management: Implement a project-specific Quality Management System (QMS) in line with ISO 9001:2015, ensuring all works meet client and regulatory standards. HSE Management: Develop and enforce a Health, Safety, and Environmental (HSE) plan, including job hazard analysis, toolbox talks, and stop-work authority for all personnel. 3.3 Design Requirements Example (will be defined case by case by specific project): Berm Geometry: Typical berm dimensions may include heights of ~1.1 m, widths of ~0.3 m, and slopes of 1:3, subject to project-specific requirements. Material Specification: Use freshly crushed rock, grading CP 45/180 or as specified, with a specific density of ~2.65 t/m³ and bulk density of ~1.56 t/m³. All rock must comply with EN 13383-1,2 standards. Tolerances: Vertical tolerance: -0.00/+0.50 m; Horizontal tolerance: -0.00/+2.00 m either side. Tolerances are to be verified by survey. Losses and Settlement: Account for installation losses (e.g., soil penetration, settlement, wash-away, compaction) in the design and quantity calculations. Execution Accuracy: Capable of precise berm installation according to design profile; Vertical Installation Tolerance -0,00/+0,50m 3.4 Mobilization & Demobilization Mobilization: Prepare and mobilize the designated rock installation vessel(s) at the port of origin. Calibrate and test all positioning, survey, and installation equipment prior to departure. Demobilization: Upon completion, demobilize all equipment and personnel, ensuring the site is left in a safe and compliant condition. 3.5 Rock Installation Operations 3.5.1 Equipment Vessels: Use dynamically positioned fall pipe vessels (DPFPV) or equivalent. Fall Pipe Systems: Deploy central and/or inclined fall pipe systems, equipped with ROVs for precise placement and monitoring. Inclined systems are used for close proximity to structures. Survey Systems: Utilize DGNSS, USBL, multibeam echosounders (MBE), and online 3D visualization packages for real-time monitoring and documentation. Vessel Requirement: Minimum DP2 fall pipe vessel 3.5.2 Sequence of Work Procurement of Rock Material: Source and stockpile rock at the designated quarry, ensuring compliance with design specifications and timely supply. Loading Operations: Load rock onto the vessel using conveyor belts or harbor cranes, with quantities verified by draft survey. Transit to Site: Sail to the offshore site, maintaining communication with client representatives. Pre-Installation Survey: Conduct detailed bathymetric and positioning surveys to establish the as-found condition of the seabed and infrastructure. Rock Placement: Execute rock dumping using DPFPV in auto-track mode, adjusting vessel speed and feeder output to achieve the required berm profile. Use ROVs and real-time monitoring tools to ensure accuracy. Intermediate Surveys: Perform check surveys during installation to monitor progress and adjust methodology as needed. Post-Installation Survey: Conduct final surveys to verify that the installed berm meets design specifications. Demobilization: Recover all equipment and return to port. 3.5.3 Special Operations Close Proximity Works: For rock placement near structures, use inclined fall pipe or tremie pipe systems, with standoff distances and positioning monitored by echo sounders and sonar. Remedial Works: If required, perform additional passes or remedial installations based on survey results. 3.6 Survey and Documentation Survey Deliverables: Provide as-built charts (DWG, PDF), DTM ASCII files, and comprehensive as-built reports. All data must be corrected for tide and quality-checked before submission. Acceptance: Survey data and as-built documentation are to be reviewed and accepted by the client’s offshore representative before demobilization. The exact requirements will be specified by the specific case and project. ___ All companies affiliated with EnBW within the meaning of Sections 15 et seq. of the German Stock Corporation Act (AktG) shall be entitled to place orders.