With summer here and hot days are upon us, it’s important for precast plants and employees to understand how to safely operate under high-temperature conditions. While staying hydrated and taking breaks is key to worker safety, it’s also essential to consider the impact heat has on the plant and concrete production itself.
After speaking with NPCA’s technical team and referencing OSHA guidelines, here are some key recommendations for keeping both your workforce and your operations safe this summer.
Plant Safety
Hot weather practices may need to be implemented earlier than expected — even under mild conditions. Stay alert to your local weather forecasts and be ready to act accordingly.
Maintain Temperature Control of the Concrete Mix
NPCA’s Quality Control Manual recommends keeping concrete mix temperatures below 90°F. Achieving this may require altering your usual processes. Many plants add ice to the water tank — no more than 75% of the total batch water — and the ice should be crushed, chipped or shaved. For maximum efficiency, the ice should not melt before entering the mixer but must be completely melted before mixing is complete. Some facilities go a step further and use liquid nitrogen to lower the temperature.
Employee Safety
According to OSHA, most heat-related illnesses occur during the first few days of hot weather as workers' bodies adjust. It’s critical to monitor employees closely during this time. Here are a few ways to help workers stay safe in the heat:
Hydration, Hydration, Hydration!
Frequent water breaks are essential. Many supervisors schedule regular hydration breaks to ensure no one forgets to stay hydrated.
Read more safety tips at https://precast.org/blog/