Type Certification vs. Project Certification

Transcription

1 ENERGY Type Certification vs. Project Certification Evaluating the Design Basis Michael Drunsic 17 June DNV GL June 2014 SAFER, SMARTER, GREENER

2 Agenda Introduction to certification Overview of type certification and project certification Interface between type and project certification Design basis CVA requirements 2

3 Certification IEC : Wind turbines Part 22: Conformity testing and certification Third party conformity evaluation of Wind turbine type Major component type Project (one or more wind turbines at a specific location) Covers design evaluation to monitoring of commissioning and operation Results in one of the following: a type certificate; a project certificate; a component certificate; or a prototype certificate. Issued by accredited certification body 3

4 Type Certification vs. Project Certification Type Certification A Wind Turbine Type Common design, materials and major components Common manufacturing process Selected design parameters and conditions Project Certification One or more specific Wind Turbines, including the Foundation Evaluated for the specific external conditions At a specific installation site 4

5 Type Certification Overview Confirm that the wind turbine type is designed, documented and manufactured In conformity with design assumptions, specific standards and other technical requirements Demonstrate that it is possible to install, operate and maintain the turbines in accordance with the design documentation 5

6 Project Certification Overview Evaluate whether type-certified wind turbines and particular support structure/foundation designs are in conformity with: the external conditions applicable construction and electrical codes other relevant site-specific requirements If there is no type certificate, the type certificate module shall be fulfilled as part of project certification Project certification can cover other installations including electric service platforms, met masts, and subsea cables. 6

7 The Interface 7

8 Design Basis Type Certification Purpose: Ensure that design basis is properly documented and sufficient for safe design of the turbine type The Design Basis shall identify all requirements, assumptions, and methodologies which are essential for the design and the design documentation including: Codes and standards Design parameters Assumptions Methodologies and principles Other requirements, e.g. for Manufacture Transportation Installation Commissioning Operation Maintenance 8

9 Design Basis Type Certification (cont d) Design basis should specifically document design aspects or parameters including choices, supplementary information and deviations related to: External design parameters; Design load cases; Load factors and load reduction factors; Partial safety factors applied on loads and materials; Duration of simulation as well as number of simulations; Methods for extreme and fatigue design loads/response analysis; Environmental conditions relevant for installation; Inspection scope and frequency; Target lifetime of components, systems and structures, and Requirements for condition monitoring systems. Design basis typically established by the turbine manufacturer 9

10 Design Basis - Project Certification Type Certificate Wind Turbine / RNA Manuf. Site Conditions Assessement Design Basis Evaluation Evaluate if the basis for design is properly developed, documented, and sufficient Integrated Load Analysis for achieving a safe design of the project Design basis is a Wind joint Turbine effort / RNA between Support Structure wind Design farm developer, Other Installations Design wind turbine Design Evaluation Evaluation Evaluation manufacturer and wind turbine foundation designer. Three parts: Support Structure Manuf. Commissioning Project Characteristics Measurements Other Installations Manuf. Part A (Developer): Site conditions and general requirements Transportation & Install. Part B (Turbine OEM): Wind turbine specific requirements, including definition of input for design loads cases, design wind parameters and loads factors Part C (Sub-structure designer): Support structure specific requirements For the turbine, the ultimate objective is to ensure that the site loads are within the load spectrum for the type certificate. Design Basis Design Commissioning Manufacturing Installation 10 Final Evaluation Project Certifi

11 Project Certification Site Conditions Assessment of the external conditions at the site as detailed in relevant standards (e.g. IEC , IEC or IEC ) adequately undertaken and documented Must consider the following: Wind conditions Wave conditions Earthquake conditions Electrical power network conditions Geotechnical conditions Ice conditions Marine conditions, current, marine growth Weather windows and weather downtime Other environmental conditions 11

12 Project Certification Design Basis Design parameters for the external conditions Design methodologies and principles Codes and standards Other relevant statutory requirements Wind turbine type Support structure concept Requirements for manufacturing, transportation, installation and commissioning Requirements for operation and maintenance Requirements for grid connection Other project requirements 12

13 Type Certificate CVA Process Overview Type Certificate Wind Turbine / RNA Design Evaluation Wind Turbine / RNA Manuf. Site Conditions Assessement Design Basis Evaluation Integrated Load Analysis Support Structure Design Evaluation Support Structure Manuf. Other Installations Design Evaluation Other Installations Manuf. Design Basis Design Manufacturing Design Fabrication IEC DNV-OS-J101 Mandatory Optional CVA program (project phases for review, assessment, and commenting according to Code of Federal Regulations (CFR)). Transportation & Install. Commissioning Installation Commissioning Installation Project Characteristics Measurements Final Evaluation Project Certificate Project Certificate Operations & Maintenance Inservice Modifications / repairs 13

14 Value of the CVA Design Process Site conditions CVA review ensures the inputs that are used in the design basis are appropriate. Enables cost effective design rather than resorting to conservative assumptions when accurate information is not available. Often conducted as pre-cva activity, before formal nomination/approval process. Design Basis Early review of design basis can minimize design review cycles and lead to a more efficient design process. Design standards and hierarcy of standards is critical and needs to be established as one of the early tasks requires extensive knowledge of US and international standards and US specific requirements 14

15 Questions? Michael W. Drunsic SAFER, SMARTER, GREENER 15