Technical Services for Renewable Energy

ClassNK provides a variety of technical services not covered by certification or third-party verification as third party upon request.

In addition to the services listed below, we can also provide other services upon request to the extent possible.

  • (1) Acting for inspections on behalf of the Requester, etc.
  • (2) Third-party attestation or appraisal for testing and inspection of materials, structures, equipment, etc.
  • (3) Technical investigation of manufacturing factory / sites, and technical evaluation of manufacturing processes, etc.
  • (4) Evaluation of construction plans for offshore wind farm construction work.
  • (5) Third-party attestation or appraisal of the damage or current condition of structures and equipment, etc.
  • (6) Third-party attestation (including issuance of an Approval in Principle (AIP)) for design, etc.
  • (7) Other technical services deemed appropriate by ClassNK.
Related Pages

ClassNK provides a variety of technical services not covered by certification or third-party verification as third party upon request.

  • (1) Acting for inspections on behalf of the Requester, etc.
  • (2) Third-party attestation or appraisal for testing and inspection of materials, structures, equipment, etc.
  • (3) Technical investigation of manufacturing factory / sites, and technical evaluation of manufacturing processes, etc.
  • (4) Evaluation of construction plans for offshore wind farm construction work.
  • (5) Third-party attestation or appraisal of the damage or current condition of structures and equipment, etc.
  • (6) Third-party attestation (including issuance of an Approval in Principle (AIP)) for design, etc.
  • (7) Other technical services deemed appropriate by ClassNK.

Overview / Procedures

Overview Regulations on Structural Safety for Wind Turbines and
ClassNK Certification Services
NKRE-RD-2601
Revision 0
Guidelines Technical Services for Renewable Energy NKRE-SP-0008
Edition: April 2024

Quotation / Application

Request for Quotation Request for Quotation PDF Word  NKRE-0008-E1
Revision 0
Application Application PDF Word  NKRE-0008-E2
Revision 0
NK-PASS Service Application (Renewable Energy)  PDF Word  PASS-APP-E
Revision 0
User Manual (Renewable Energy)  PDF Revision 15

Address and Contact Details

NIPPON KAIJI KYOKAI Renewable Energy Department
Address: 4-7 Kioi-cho, Chiyoda-ku, Tokyo 102-8567, Japan
TEL: +81-3-5226-2032
FAX: +81-3-5226-2060
E-Mail: re@classnk.or.jp