Section 10 Project characteristics measurements
Clasification Society 2024 - Version 9.40
Clasifications Register Guidance Information - Guidance Notes for Offshore Wind Farm Project Certification, October 2022 - Chapter 2 Project Certification Modules - Section 10 Project characteristics measurements

Section 10 Project characteristics measurements

10.1 Module requirements

10.1.1 This is an optional certification module in IEC 61400-22 Wind turbines – Part 22: Conformity testing and certification and IECRE OD-502 Project Certification Scheme; evaluation should be undertaken as directed by the applicant.

10.1.2 The purpose of this module is to establish site-specific performance-related characteristics of a WT project. These measurements are in addition to those taken as part of the WT’s type certification, and can comprise one or more of the following:
  • grid connection compatibility according to grid codes;
  • verification of power performance; and
  • verification of acoustic noise emissions.

10.2 Guidance on input requirements

10.2.1 The applicant is expected to provide the certification body with applicable test procedures, with reference to IEC 61400 standard series as applicable. If the test procedures do not follow appropriate IEC standards, they should be agreed with the certification body before the test(s).

10.2.2 Test reports should demonstrate compliance with the requirements of ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories, and that the procedure has been followed, and record all anomalies experienced during the testing. In addition, under the IECRE OD-502 Project Certification Scheme, the test reports should also be clearly marked by the RETL.

10.3 Evaluation methodology

10.3.1 LR’s evaluation for this module as certification body will normally be completed by reviewing test reports.

10.3.2 Under IEC 61400-22 Wind turbines – Part 22: Conformity testing and certification, provided that measurements have been carried out by a laboratory accredited to ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories, or that the party undertaking the measurements is accredited to ISO/IEC 17020 Conformity assessment. Requirements for the operation of various types of bodies performing inspection, LR does not need to witness the testing. If this is not the case, LR will confirm that the testing has been undertaken in accordance with the requirements of these standards. This can be achieved by review of the organisation’s facilities and quality system, review of the test procedure, witnessing the testing or reviewing the test report, or a combination thereof as considered relevant by LR and with the agreement of the client/applicant.

10.3.3 Under the IECRE OD-502 Project Certification Scheme for well-established project characteristic measurements, the party undertaking the measurements should be an IECRE accredited RETL or an RECTF for the subject test scope. If the project characteristic measurements are not well-established (i.e. there is no IECRE accredited RETL or an RECTF for the subject test scope), then the measurements can be carried out by an approved certification body for the subject test scope.

10.3.4 The conformity statement for this module simply confirms that the testing has been completed in accordance with the appropriate procedures, including IEC standards as applicable, and not that a particular level of performance has been achieved. For the acoustic noise emissions, the conformity statement will additionally confirm that the compliance criteria, as stated in the test procedure (whether as per the IEC 61400 standard series or some other agreed criteria), has been achieved.


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