Durability requirements. 9.1. The applicant shall ensure that the dual-fuel engine retrofit system when used and maintained according to the manufacturer’s instructions will comply with the applicable provisions during normal operation over a useful life of 4,000 operating hours or a service life of 6 years, whichever occurs first. 9.2. The dual-fuel engine retrofit system submitted to the durability tests as specified in Regulation No. 67 or Regulation No. 110, as applicable, shall be used to demonstrate the exhaust emission requirements as specified in paragraph 5. of this annex.
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Sources: Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles