Stoll Criteria and Skin Burn Injury Prediction
topic
The Stoll and Chianta burn injury criteria establish that pain threshold occurs at 44 degrees Celsius skin surface temperature and second-degree burn at 48 degrees Celsius, with the Henriques burn integral providing cumulative tissue damage calculation accounting for sub-threshold exposure history, forming the physiological basis for the copper calorimeter and skin simulant sensor measurements used in TPP testing that predict time to second-degree burn injury from measured heat flux transmission.
Role
Provides the physiological foundation for firefighter clothing performance standards by defining the skin temperature limits that protective clothing must maintain below for required exposure durations, with Stoll criteria being universally embedded in EN 469 and NFPA 1971 test methods that use these injury thresholds to calculate the TPP performance metric that quantifies and specifies minimum thermal protection for structural firefighting clothing.