Recent Blog Posts

Fundamentals of Refrigeration: Absolute Pressure and Gauge Pressure

December 23rd, 2025

While the pressure that the air exerts over the surface of the earth is approximately 14.7 pounds per square inch, most pressure gauges will read ‘0’ psi when open to the atmosphere. This is because pressure gauges measure a “relative pressure” compared to the surrounding atmospheric pressure. When a gauge is put on a tire […]

Ammonia Week in Review | December 19, 2025

December 19th, 2025

Ammonia HAZMAT Training In Focus in this week’s edition of the Ammonia Week in Review… Winnipeg Hazmat Crews Contain Ammonia Leak at PepsiCo Facility – The response was led by the Winnipeg Fire Paramedic Service (WFPS), which deployed its specialized Hazardous Materials (Hazmat) team to the scene. […keep reading] BFD Trained and Ready for Most Disasters – […]

Fundamentals of Refrigeration: Atmospheric Pressure

December 16th, 2025

Because the air that fills our atmosphere has a weight, it also exerts pressure over the surface of the Earth. This pressure is referred to as “atmospheric pressure”, “air pressure”, or “barometric pressure”. At sea level, experiments have proven that the atmospheric pressure is 14.696 psi. Since the density of air decreases as the elevation […]

Ammonia Week in Review | December 12, 2025

December 12th, 2025

Ammonia Disrupts Holiday Shopping in this week’s edition of the Ammonia Week in Review… Dozens Evacuated After Reported Ammonia Leak at Memorial City Mall – About 30 mall employees and an ice hockey team practicing on the ice rink were evacuated. […keep reading] Ammonia Leak Forces Evacuation at FreshCo Packaging Company – “Our hazmat crews were able to go […]

Fundamentals of Refrigeration: Pressure

December 9th, 2025

Pressure is the measurement of a force applied over an area. The equation to calculate pressure is Pressure equals Force divided by Area. Imagine that a 200-pound man stood on top of a table that has a 10 square foot area. Assuming the man’s weight could be evenly distributed across the table, the pressure exerted […]