ConAgra Foods, doing business as Lamb Weston, signed the agreement to protect workers at five of its facilities from the release of anhydrous ammonia from refrigeration systems.
It requires the firm to implement controls to reduce hazards associated with release of ammonia from low pressures receivers (LPRs).
OSHA had cited ConAgra for failing to determine whether older LPRs were being operated safely.
ConAgra will implement controls at the covered LPRs for hazards associated with the release of ammonia, including building enclosures around equipment that is not already enclosed.
"This agreement ensures that ConAgra will protect workers from releases of ammonia by enclosing older LPRs that were not already enclosed, and by providing other controls such as normal and emergency ventilation to prevent exposure," said Dr David Michaels, assistant secretary of Labor for Occupational Safety and Health.