Final answer:
The primary safety measure for Alain's job at the winery should be ventilation of the fermentation tanks to remove harmful CO2 vapors, followed by testing air quality for safety before cleaning the tanks.
Step-by-step explanation:
During the fermentation process of grape juice into wine, carbon dioxide (CO2) is produced as a byproduct. For safety, it's crucial to ensure that fermentation tanks are properly ventilated. Tanks are typically fitted with valves to release the pressure built up from the produced CO2, as seen in Figure 7.15 and Figure 7.16. Alain's job at the winery includes cleaning these tanks, and the first safety measure should always be to vent the tank to remove any hazardous vapors remaining inside. Testing the air quality after venting is essential to confirm that all vapors, particularly CO2, have been sufficiently cleared from the space before entering.
Ignoring this crucial step can lead to serious dangers, such as oxygen deficiency for anyone entering the tank, given that CO2 is denser than air and may accumulate at the bottom. This aligns with general safety procedures for using equipment or products that may release pollutants, stressing the importance of ventilation, as shared above. Additionally, handling fermentation tanks require an understanding of anaerobic cellular respiration and the physical behavior of gases, as CO2 escaping through the tank's valve is similar in principle to removing a flask from heat to prevent liquid from escaping as mentioned in the process outlined for determining a gaseous sample's mass