Common use of Degreening Clause in Contracts

Degreening. For many hardware technologies, a brief period of use (degreening) is needed to achieve a stable emissions reduction that allows representative testing. The degreening time period required varies for different technologies but is on the order of 25 to 125 hours. In all cases, the technology applicant must propose and justify the extent of the degreening process in the ETV application. The APCTVC office will review and comment on this proposal, advise regarding the documentation requirements, and append the degreening process description to the technology test/QA plan. When complete, the actual process used must be documented. A description of the degreening process will be included in the ETV report. For purposes of this protocol, the degreening time requirement will be specified by the technology applicant as indicated by either previous testing or the requirements of the data user. To allow flexibility for the applicant, degreening is not required to be conducted at the testing organization. It may be performed and documented by the applicant or conducted by the testing organization by arrangement with the applicant. In either case, the applicant will ensure that degreening activity documentation such as start and stop date and time, engine and fuel description, and operating conditions are available and signed by the person responsible for the activity. Engine Type Minimum Durability Demonstration Period Highway 50,000 miles or 1,000 hours Nonroad (mobile and some stationary engines) 1,000 hours Stationary Emergency Generator 500 hours engine, or another engine of the same size which utilizes the same engine Table 2. Minimum Durability Demonstration Periods technology (and thus falls within the range of the technology’s stated applicability).