Okla. Stat. tit. 63, § 63-1-1130

The refrigeration system for a locker plant or branch locker

plant shall be equipped with accurate and reliable controls for the

automatic maintenance of uniform temperatures as required in the

various refrigerated rooms and shall be of adequate capacity to

provide, under extreme conditions of outside temperatures and under

peak load conditions in the normal operations of the plant, the

following temperatures in the several rooms, respectively:

Chill room

(a) Temperature of thirty-four degrees degrees above zero

Fahrenheit (340F.) plus or minus two degrees (2 degrees) with a

tolerance of five degrees Fahrenheit (50F.) for a reasonable time

after fresh food is put in for chilling.

Oklahoma Statutes - Title 63. Public Health and Safety Page 589

Sharp freeze room. Sharp freezing compartments

(b) Temperature of ten degrees below zero Fahrenheit (-100F.) or

lower or temperature of zero degrees Fahrenheit or lower when forced

air circulation is employed with a tolerance of five degrees

Fahrenheit (50F.) for either type of installation for a reasonable

time after fresh food is put in for freezing.

Locker room

(c) Temperature of not to exceed zero degrees Fahrenheit (00F.)

with a tolerance of three degrees Fahrenheit (30F.) higher.

The foregoing temperatures shall not be construed as prohibiting

such variations therefrom as may occur during short periods of time

incidental to defrosting. For experimental purposes, the State

Commissioner of Health, upon application in writing, may authorize

for a limited and prescribed period the installation and use of

refrigeration systems or methods which in the opinion of the

Commissioner will result in improvement over present methods.

An accurate direct reading thermometer shall be provided in the

chill room and in the sharp freeze room or compartment. An accurate

self-registering or self-recording thermometer of a type approved by

the Commissioner shall be provided in the locker room. The discs or

other temperature records of such thermometer shall be kept at the

plant and shall be preserved for at least one (1) year from the date

of the recording. The thermometer in the locker room shall be

placed in a position where it is readily observable by patrons.