Oregon Revised Statutes Food and Other Commodities: Purity, Sanitation, Grades, Standards, Labels, Weights and Measures § 628.300

(1) The refrigeration system of a refrigerated locker plant shall be equipped with accurate controls for the maintenance of uniform temperatures as required in this section in the various refrigerated rooms of such plant and shall be of adequate capacity to provide under extreme conditions of outside temperatures and under peak load conditions in the normal operation of such plant, the following temperatures in the following rooms respectively:

(2) The temperatures required by subsection (1) of this section shall not be construed as prohibiting variations therefrom due to defrosting, power failure or any emergency breakdown.

(3) An accurate direct reading thermometer shall be maintained in the chill room. An accurate self-registering or self-recording thermometer shall be maintained in each locker room or in each series of rooms through which the same air circulates. The discs or other temperature records made by such instruments shall be signed by the person in charge of the plant and shall be preserved at such plant for at least one year from the date of recording. Such temperature-recording equipment and the recordings thereby made, are subject to inspection and testing by the State Department of Agriculture to determine their accuracy.