Appendix A is solely intended to enable the principal elements of the Work to be identified and must be read in conjunction with all the Appendices, documents and enclosures within this Contract.Appendix A does not present exhaustive details of each activity required to complete the WorkCompany shall have access to updated information from Contractor’s systems, plans and reports upon Company request.The contract relates to two projects of offshore wind farms i.e. . They are developed - respectively - by project) and project). Both companies are JVs, owned by (50% of shares) and (50% of shares).MW). The offshore wind farms will be located in Polish exclusive economic zone of Baltic Sea and are subject to Polish regulatory regime.The electricity generated in the wind farms will be exported to the Polish transmission grid, operated by Polskie Sieci Elektroenergetyczne S.A. (Polish TSO). Each wind farm has obtained separate grid connection conditions and is covered by one Grid Connection Agreement with TSO, concluded by - respectively -Each has obtained or will obtain separate set of Permits required by Applicable Law for development, construction and operation of the offshore wind farm in Polish exclusive economic zone of Baltic Sea.Both have obtained the decisions of the Polish Energy Regulatory Authority on granting support (state aid) for each project, in accordance with the Act of 17 December 2020 on the promotion of electricity generation in offshore wind farms.- t --- and vessels substation 220kV->400kV substation 400 kV ourThe two High Voltage AC Offshore Substations are in approx. 30 meters of water depth. During the FEED studies the two topsides were treated as they were identical, whereas the design for the substructures/jackets have been treated separately.For the detailed design however, it can be expected minor differences in topside design that must be considered. These are mainly related, but not limited to cables, hang offs and routing of cables.Both substructures are a four-legged jacket type with two piles in each corner. Ten (10)- Jubes for IAC and two (2) J-tubes for EC are installed on each substructure and one cable deck. The J-tubes shall be protected against sea ice.2.3.4 Contract Object The Contract Object shall comprise the following Units:• A complete Offshore Substation Substructure (incl. piles and scour protection)2. High value - Optimize regularity - Reduce CAPEX - Accelerate schedule - Secure certification and avoid delays in Building Permit process3. Low carbon - Energy efficient solutions - Energy efficient executionA set of KPIs shall be established to measure achievement of the objectives. Company may define some of the KPIs and the total KPI set shall be agreed with Company. The KPIs shall be continuously monitored during different stages of execution.Company and Contractor shall establish common targets for all KPIs. The targets shall support achievement of the ObjectivesContractor shall in cooperation with Company identify, specify, and incorporate digital solutions related to project execution and facility operations/maintenance.Contractor shall drive and/or contribute to digitalisation initiatives when agreed with Company.• Use all digital tools stated in Contract in cooperation with Contractor’s digital tools to ensure effective execution and collaboration.• Ensure that the technical design supports remote operation and maintenance in accordance with Company operation philosophy.To achieve Company's objectives, Contractor shall manage the work and deliver according to requirements further described in Appendix D.Contractor shall cooperate with Company to secure efficient work processes further described in this section.Contractor shall the develop the execution schedule in accordance with requirements and frame conditions in Appendix D.3D model shall be basis for layout related design reviews for all disciplines.Contractor shall secure integration of resources from critical /complex equipment Subcontractors in the early detail engineering phases to utilize Subcontractor’s knowledge and to achieve the right mutual and aligned understanding of the design parameters and specifications.Contractor shall establish and maintain engineering site organisations for handling of all engineering activities and participation in quality assurance throughout the Contract period. Size and location(s) of site engineering team shall be agreed with Company.Contractor shall ensure internal multidiscipline cooperation and involvement in all deliveries. Construction and commissioning personnel shall be involved in detail engineering to promote solutions for efficient construction and commissioning phases.4.1.1 Technical queries Queries shall clarify technical issues:4.1.5 Certification Body approval All Work shall as a minimum comply with the Certification requirements. Information of Certification Body (CB) will be announced later.Contractor shall issue a plan for approval of documents and an inspection and test plan that fully reflects CB involvement.Company shall be given access to all correspondence and be invited to technical meetings between CB and Contractor.Contractor shall obtain all Permits, licenses and authorizations related to CB, including being fully responsible for the timely issuance of such approvals.Digital initiatives will be applicable for the OSS and interface with ESI system provider are expected.Contractor shall perform design, verification, fabrication, testing, commissioning and complete the certification of all lifting appliances prior to use. A Third Party shall be involved during all phases of the certification and CE marking process.Contractor shall engage Third Party for design verifications, fabrication follow up, testing, commissioning, certification, and CE marking on all relevant loose or fixed equipment and4.1.7.2 Deliverables These deliverables are in addition to deliveries listed in TR2381:• Documentation and verification reports as required by Laws, regulations, and Contract shall be included in the delivery.• WE and HF design reviews shall be performed for the offshore cranes. The WE/HF checklist for crane cabin/cabin chair shall be used.Cyber security shall be designed into the solution according to referenced standards and requirements documents defined in Appendix E, which gives a framework and guidance for how to apply the IEC62443 standard. As described in Appendix E, Contractor shall ensure that the self-assessment is performed and documented to cover all systems in Work. New requirements published but not necessarily enforced in IEC62443 and applicable cyber security laws and regulations shall be applied. All systems connected to Ethernet shall be assessed, designed and implemented according to the requirements and guidance in this framework.Contractor shall work closely with Company and other package vendors to exchange relevant information for the IT/OT infrastructure. The Contractor shall facilitate and agree on external interface and services with others, such as information management system (IMS), interfaces with other SCADA systems, remote access, patching, antivirus, backup, NTP, FTP etc. All interfaces shall be subject for Cyber security risk assessments.Contractor shall arrange the necessary workshops with Subcontractors to ensure the quality of the self-assessments from Subcontractors. Company shall be invited to participate in all such workshops.Contractor shall identify and develop the necessary documentation within the IT/OT infrastructure and cyber security discipline to complete the Work. The following assessments and documents should be submitted, but not limited to:• Network, Security Zones and Conduit drawings shall be made by Contractor. The template for the drawing shall be provided by Employer. The contractor shall do a detailed criticality assessment and zones & conduits partitioning for each procurement package.• The Zones and Conduit drawing shall contain Security Level-Targets substantively following the processes as set out by IEC62443-3-3:2019. The SL-Ts will be based on the Reference Architecture Model in IEC62443-3-3:2019 and the SL-Ts shownContractor shall have the total responsibility for the safety design of the Contract Object. The needs for external studies shall be evaluated at an early stage of the Work and agreed with Company.Contractor shall review the Contract Object to ensure that design accidental loads are kept on established levels. The timing for the review shall be agreed with Company.Contractor shall perform or update the necessary studies, analysis and reviews, e.g., HAZID, which are required to complete and document the work.Functional safety management work shall be limited as follows: When instrumented safety barriers are required to protect against severe safety, environment and /or business loss/asset consequence, components used in the instrumented barriers shall comply to predefined minimum performance level (SIL). The requirements are limited to the components, and not to the entire functions.The functional safety documentation for the components can be limited to documented use of certified equipment and/or by safety manual from equipment vendor. SIL verifications may only include acceptance of safety manuals, and certificates, when relevant.4.5.2 Technical working environment deliverables These deliverables are in addition to deliveries listed in TR2381:Update technical working environment strategy and activity plan. The activities shall be coordinated with the overall project’s milestones and agreed with Company. The strategy and plan shall include the follow-up of procurement packages.Project specific Working environment design checklist The Project specific working environment design checklist for Equipment Packages (issued in FEED) shall be part of equipment purchase and shall be used in follow-up of equipment design and construction.4.5.3 Noise and vibration control deliverables These deliverables are in addition to deliveries listed in TR2381.Noise and vibration strategy The noise and vibration strategy shall be updated. The noise and vibration strategy shall describe the Project’s approach on how to control noise and vibration to comply with requirements.Noise prediction model The noise prediction model shall be updated.The noise prediction model shall include all noise sources, piping, acoustic properties of the area, and reflection from adjacent equipment and structure as well as noise reducing measures.4.6.2 Deliverables These deliverables are in addition to deliveries listed in TR2381:Environmental aspects identification, assessment and reporting Contractor shall review and update the assessment of significant environmental aspects from the FEED phase, related to the remaining design options/solutions and equipment selections of the Contract Object.The impact assessment commitments register, shall be included in the review to verify that all design related commitments are implemented.Environmental budget The FEED Environmental Budget report shall be reviewed and updated, reflecting design developments and changes that could have an impact on the environmental performance of the system/technique/equipment.Best Available Technology BAT) The FEED BAT report shall be reviewed and updated, reflecting design developments and changes that could have an impact on the environmental performance, including energy optimisation, of the system/technique/equipment.Waste management plan A waste management plan shall be developed for the Contract Object• Updated Computerised Fluid Dynamics (CFD) analyses report to document optimal location of air intake/exhaust, to prevent contamination and minimize influence of variable weather conditions.• Updated CFD analyses report for mechanical ventilated areas where contamination, draught and/or temperature will be a challenge.o Updated CFD analyses report for naturally ventilated areas that document sufficient ventilation and temperatures in naturally ventilated rooms.4.8.3 Deliverables These deliverables are in addition to deliveries listed in TR2381.• Equipment Heat Emission must be issued monthly during detail phase to catch up changes in heat emission as vendor gets confirmed data. Calculation report documenting expected room temperature rise in all operational scenarios shall be included.• HVAC workmanship document that describes in detail the fabrication and installation of ductwork (including inspection doors and other relevant accessories) and in-line equipment.• Procedure detailing how ductwork is kept clean and free of dust/dirt during construction. Acceptance criteria according to ISO15138 table B.3. Cleaning class “high” shall be achieved, documented with test method gel tape type or similar.• Ductwork leakage test procedure. o Ductwork cleanliness test procedure. o Access design of Air handling Unit:• This document shall be issued before construction of AHUs are started and shall be basis for a review prior to start construction.• Description of general access and access to components requiring inspection, maintenance, replacement.• Location and sizes of hatches/doors for inspection and maintenance of components.• Description of necessary components, wall panels, cable trays etc needed to be dismantled to facilitate changeout or maintenance of components.• FAT procedures. Note: Procedure shall include leakage test and be reviewed and approved prior to FATContractor shall perform all activities necessary to design and engineer the complete auxiliary power system with battery limit at the low voltage side of the Earthing Auxiliary Transformers (EAT) delivered by ESON contractor.1. Testing of communication links including protocols between Equipment Package and ESI SCADA2. Testing of signals and relevant functions towards ESI SCADA HMI3. Testing between equipment packages, I.e., fire and emergency system, HVAC, Diesel system, PMSThese deliverables are in addition to deliveries listed in TR2381:• Plan for all Automation deliverables and testing• Functional Design Specification (FDS) for SAS node• SUS specification including description of interfaces and systems o Detailed network drawing o Detailed VLAN network drawing o Update/develop specifications to sub-suppliers in line with Company requirementsThe line numbers shall also be updated with the insulation code according to TR0052This applies to the P & IDs, line list, piping isometrics, the 3D model and all other databases or places in the documentation where line numbers are referred to.These deliverables are in addition to deliveries listed in TR2381:3D CAD model Contractor shall further develop/update the 3D model to fulfill requirements in TR2231.Contractor shall ensure all necessary detail information about equipment, interfaces and components from sub-suppliers and other contractors to complete the design and shall take the lead position and coordinate all Global 3D model interface activities. Contractor shall integrate 3D models from other contractors and subcontractors into the 3D Global model to ensure compatibility during all phases from engineering to construction and as-built.Contractor shall upon request provide reports from the 3D model. Contractor shall perform regular clash and constructability checks in the 3D modelThe model shall be used to extract construction and as built information. The final 3D model shall be clash free and shall present a true digital twin of the as-built Contract Object.4.14.2.2 Material handling Material handling shall be in accordance with TR2324Crane study report Contractor shall further develop the crane study report. The full content of the report is to be agreed in advance with Company.Contractor is responsible for delivery of Material handling report for all equipment that can be part of maintenance or repair in the operation period. Handling of the temporary equipment shall also be part of the document.Material Handling report and individual Material Handling Data Sheets Contractor shall do necessary updates of FEED design also relevant for Material handling.Contractor shall make a Material handling that secure a correct function, correct system engineering and correct material handling also for interfacing Contractors, include Operation phase of the OSS. If all- electric platform crane: Contractor to assess the use of the walk-to-work area NE at cellar deck as lay down area for a 10 feet container landing with total weight 5 T. That includes but not limited to space, structural capacity, bumpers, access for people and access to SOV gates.Pipe stressContractor shall perform stress calculations for piping systems in accordance with ASME B31.3 and TR1951The pipe stress analysis shall give due consideration to slugging and acoustic, and flow induced vibration where these are identified as being likely to be encountered.4.14.2.3 Pipe support Pipe support design shall be in accordance with TR2320.Field supporting of non-critical smallbore pipes is not acceptable unless with a written approval by companyPipe support detail standard Contractor shall provide a pipe support detail standard for the project. The standard shall be submitted to Company for review at start of detail engineeringPiping and valve material specification Contractor shall select pipe classes from TR2000 to achieve the most cost optimal pipe size, wall thickness and material combinations, and shall identify and advise Company in due time if additional pipe classes are required or if there is a need for changes to piping classes already established.Piping specification in mechanical packages or system modules shall be according to TR2000. However, for equipment where it is unreasonable to use this specification, the supplier may request a deviation. The deviation can only be implemented after acceptance. Deviation request shall include details enabling Company to evaluate if the alternative solution shall be included in TR2000.Piping classes for all piping shall be concluded at the start of the detail engineering. Contractor shall review and verify the need of adjustments and / or additional piping and tubing classes and valve data sheets to cover specific requirements within each system. Company’s TR2000, ref appendix E, shall be used for piping, tubing and valve datasheets.Any changes or additions to TR2000 Baltyk shall have a written approval from Company before proceeding.Due to new established TR2000 and change of pipe class sheet names, all line numbers shall be changed accordingly. The line numbers shall also be updated with the insulation code according to TR0052This applies to the P & IDs, line list, piping isometrics, the 3D model and all other databases or places in the documentation where line numbers are referred to.Piping special item list Contractor shall develop and make available a list that covers piping special items introduced as a result of the scope.Piping special item data sheets Contractor shall provide data sheets for listed piping special itemsPiping component calculations Contractor shall provide documentation of calculations (supplied by vendors) for components that, based upon experience, are not standardized e.g., weldolets, nipoflanges specific special items etc.The range of components that shall be subject to this requirement to be discussed and agreed with Company.Site run of smallbore pipes 2” or less is not acceptable unless with an written approval by company.4.14.2.5 Hoses and couplings Hoses and coupling design shall be in accordance with TR1803Contractor shall perform overall Mechanical system design, procurement and installation for the Contract Object. Contractor shall perform necessary reviews and establishment of specifications and equipment type selections. Contractor shall evaluate and review equipment selection impact on layout, operation/maintenance/service and material handling. Contractor shall secure correct interface handling so the Equipment can operate safe, with correct function and as a part of a system.The equipment specifications developed in the FEED study (by Rambøll) shall be used as information for the EPC Contract. But Contractor needs to clarify interfaces still not solved in FEED documentation, to secure that the equipment can be used as intended, as a part of a system.Note: An assessment shall be provided for selection of type of platform crane ref. “Offshore Crane Design and Functional requirements” chapter 3.1, and use of north east laydown/walk to work area at cellar deck for hook on/off a pendant wire if all-electric crane is selected. The selection shall be approved by Company.The mechanical design and equipment selection shall have focus on safety standard, high reliability and energy optimization.Input to piping/layout regarding material handling requirements for equipment shall be provided.The Scope of work for Contractor’s Mechanical discipline in the detailed engineering and Construction phase shall include, but not be limited to, the following activities and equipment deliverables:Specify, procure, permanent install, certify and test onshore following equipment:• Diesel System and Diesel Generator: o Diesel hose reel o Diesel storage tank skid o Diesel transfer skid o Diesel generator o Diesel day tank (part of Diesel Generator skid)4.16.1 Deliverables These deliverables are in addition to deliveries listed in TR2381:• The Materials Selection Report from FEED shall be updated. A final update of the Materials Selection Report to reflect as-built status shall be performed.• A detailed Positive Material Identification (PMI) procedure shall be established.• Develop all necessary specifications and procedures to perform all phases of construction in accordance with the relevant fabrication specifications and design details.• Establish a “coating friendly steel design” document that shall be according to ISO 12944-3:1988 Part 3: Design considerations.”• Develop Coating Selection Matrix in accordance with TR0042.• Further develop the Insulation Procedure Specification (IPS) as required throughout the project. Company provided generic IPS shall be used as basis for the development of project IPS.• Further develop piping and equipment insulation design specification as required. A section on insulation friendly design shall be included.Contractor shall perform all engineering of all structural elements included in the Contract Object.Contractor shall have the total responsibility for structural design and shall perform all necessary analyses including detailed design to document structural integrity of all4.17.2 Deliverables These deliverables are in addition to deliveries listed in TR2381:Structural design briefs Structural design briefs shall be developed and used as basis for design and documentation.These documents shall be issued to Company for review and acceptance before start of analyses and design work. Design brief documents shall be valid for both permanent and temporary phases.Drawing templates Prior to starting drawing production, Contractor shall develop design drawing templates for Company review and approval. The templates shall cover primary, secondary and special structures. How weld details will be presented shall be clearly shown.Weight budgets Contractor shall create weight budgets for structural design for all relevant design conditions. The weight budgets shall be issued to Company for review and acceptance before start of analyses and design work.No-go-areas Fatigue sensitive areas in primary structure shall be communicated to other disciplines. Attachments or penetrations in these areas shall be avoided as far as possible. Drawings presenting "no-go-areas" for attachment welds or penetrations shall be established to ensure compliance with prerequisites from designer.Structural analyses Fatigue Wave Load Calculation: Wave inundation, free surface effects and variable buoyancy effects can be important for shallow water jackets with bracing located in the splash zone. Due to this the following must be described:• potential wave inundation and free surface effects.The steepness of each individual wave is governed partly by wave period associated with the wave heights in the scatter diagram. Describe the sensitivity to the associated wave heights used for each wave height in the deterministic fatigue analyses.The structural analysis reports shall include but not be limited to the following, where relevant, for all structures:4.17.4 FEED HAZID Implement findings from the separate FEED HAZID – Sea Ise loading on substructure.Reference is made to MFW Certification Report – Concept Certification – Ice loading on Offshore Substation Substructure, CR-C-DNV-SE-0190-9866-0.Contractor shall review the Company provided geotechnical design basis and available soil data, ref. Appendix E, and produce an interpretation report with all parameters relevant for Substructure design.Contractor shall perform installation analysis of the Substructure and specify all Substructure requirements and procedures for successful installation of the Contract Object.Contractor shall design the Substructure piles based on installation contractor’s nominated piling equipment, including pile handling and drivability analysis.Contractor shall review FEED assessment of scour protection and perform all engineering related to scour protection of the Contract Object. J-tubes must be included in the engineering of the scour protection.Based on the scour evaluation, Contractor shall perform a scour protection analysis, and design and document the scour protection to ensure that the seabed level around the Substructure and its J-tubes is maintained over the project lifetime, taking into account interfaces at the seabed e.g., the subsea cables. Company will provide and install required scour protection.Contractor shall verify the scour protection design presented by FEED contractors.Contractor shall identify and develop all documentation within the geotechnical discipline to complete the Work, including all documentation required in Appendix E.• Geotechnical design brief with contractor understanding Company provided geotechnical design basis and available soil data, ref. Appendix E4.19.2 Deliverables These deliverables are in addition to deliveries listed in TR2381:• Architectural room layouts, sections and elevations of architectural areas showing furniture and equipment arrangements and with references to furniture and equipment list(s).• Architectural furniture and equipment list(s) for the architectural areas.• Room finishes schedule(s) containing all room surfaces and related material qualities.• Door schedule(s) presenting door types, fire rating and additional equipment like electrical or pneumatical opening device, fire alarm release hold open device, glazing/vision panels, threshold types/solutions etc.• Drawings of walls for weather, wind, explosion relief, acoustic & personnel protection, together with associated fittings etc.• Room name and numbering list. - Room program including room areas (m2)Contractor shall carry out all activities necessary for accurate estimate and control of the weight and the centre of gravity that reflect 100% of as-built weight for the OSS topsides and jackets, including any temporaries for all relevant load conditions.Contractor has the global responsibility to report weight and CoG for the complete OSS topsides and substructures, including weight report, Master Equipment List and weight database.Contractor’s method and premises for weight control shall be presented to Company before the weight control work starts.4.20.2 Deliverables These deliverables are in addition to deliveries listed in TR2381: Weight procedure and management plan Weight report (monthly basis)Weight database (monthly basis) All pieces in weight database shall be continuously updated with installed items. These drawing references shall be implemented no later than first issue of construction drawings.The weight control database shall be structured such that any combination of building blocks can be reported on Company’s request.Weighing prediction reports Weighing reports MEL in excel formatContractor shall produce EWPs for the Offshore Work. Company and Contractor shall agree on the detail level of the EWP’s.The EWPs are single discipline, but multidiscipline EWP’s can be used where it helps to simplify defining the scope Contractor shall hold preview meetings of EWPs to shorten review time.14 Days prior to performance of each FAT, Contractor shall notify Company of the equipment item, the time and the location of the FAT.Prior to start FAT Mechanical Completion Check Records (MCCR’s) shall be given a legal status code in ProCoSys and punch items shall be entered in ProCoSys.Life Cycle Information (LCI) is technical information developed during project planning and execution, required for procurement, fabrication, construction, mechanical completion, commissioning, preparation for operations, start-up, operation, maintenance, repair, modification and decommissioning of a Wind Farm.All engineering and equipment LCI that is not standard documentation, shall be numbered in accordance with TR0052 - Engineering Numbering System (ENS). LCI shall be delivered electronically in the original format and as PDF files in accordance with Company’s LCI requirements.Documentation for Standard Equipment (SEMI) shall be stored in Company’s database for standard equipment. The delivered equipment shall be unambiguously identifiable in the documentation by Supplier’s model and variant. Standard documentation shall not be customized and shall not contain tag or plant specific information, no cover sheets added or Company drawing borders shall be used.Contractor shall include the LCI requirements in Subcontracts and Equipment Purchase Orders. Contractor shall verify the LCI delivery as part of the Factory Acceptance Test (FAT), and shall be responsible for the quality, completeness, and handover to Company.Contractor shall ensure that redline markups are implemented in as-built documents and drawings.Contractor shall establish multidiscipline databases both for tags and documents in order to produce master tag and document registers. Documents and drawings shall continuously be cross-referenced to relevant tag number(s).All Company's projects shall be executed within Company’s global framework, performed in the asset's global 3D CAD model, and shall be delivered according to TR2231.6.7.1 At Contractor premises Contractor is the principal enterprise at Contractor premises.Contractor shall have a permit to work (PTW) system implemented at any construction Site relevant for Contract Object.Prior to starting any commissioning activity, Contractor shall provide and implement a work permit system capable of dealing with the inherent risks related to parallel execution of construction and Commissioning. The PTW system shall be jointly audited by Contractor and Company to ensure that its adequate to handle parallel construction and commissioning work at any of the Contractor’s Sites.Contractor shall implement the principles for clean, dry buildings during the construction and HUC period. This is to prevent pollution and humidity during construction having a negative effect on the indoor environment in the completed building or development of corrosion within the structure.Contractor shall develop procedures and detailed implementation plan in compliance with GL0573 Guideline for clean and dry building (ref. Appendix E), and NS-INSTA 800 for moisture measurement and moisture acceptance criteria. The procedures and10.1.4 Option 4: Pre install topside Export cable (EC option) Contractor shall pre-install 220 kV topside cables between 220 kV GIS and export cables.Contractor shall be responsible to terminate and test pre-installed 220 kV topside cables to GIS at OSS yard.Contractor shall be responsible to splice pre-installed 220 kV topside cables with export cables after OSS topside is installed offshore.10.1.5 Option 5: Temporary equipment for Dry clean building during load out and HUC Contractor shall provide HVAC system and temporary generator during load out and HUC. Contractor is responsible for installing and hook-up up all related equipment.10.1.6 Option 6: Lifetime extension Five (5) to ten (10) years lifetime extension for the structural design of the Contract Object.Contractor shall provide fan coil units and wall mounted heaters if required to regulate room temperatures in certain rooms.