This ammonia refrigeration system for the ice rink had been shut down, and the full ammonia charge (800 pounds) was being stored in the chiller, attached surge vessel, and the oil pot. Three (3) days before the incident, a contractor was doing maintenance on the brine system to install a pH sensor in the brine […]
The Chemical Facility Anti-Terrorism Standards (CFATS) program requires high-risk facilities to ensure security measures are in place to reduce the risk of more than 300 chemicals of interest (COI) being weaponized. High-risk facilities are assigned to one of four (4) risk-based tiers and must develop a security plan meeting the 18 Risk-Based Performance Standards (RBPS).
As stated in REGO’s Warning Document… Simply retesting pressure relief valves manufactured by RegO that have been in service for several years to confirm conformance with start-to-discharge and reseal ranges does NOT guarantee that the valve is suitable for continued service. Or that the valve will perform as designed at nominal pressures or in emergency
“Relief valves should be inspected each time the container is filled but no less than once a year. If there is any doubt about the condition of the relief valve, it must be replaced.” Major Factors to determine the “Life” of Relief Valves include: Water/Ice Accumulation Corrosion Dirt – Debris Damage Normal Aging Eye protection
At 3:10 p.m. on February 2, 2022, an employee, 26, was performing maintenance on a System Applicator. The employee began the ammonia bleeding procedure wearing safety glasses and rubber gloves. After approximately 20 to 30 minutes, the employee no longer heard a whistling sound and believed that the system was completely bled out. When the
On February 19, 2022, Employee #1 took apart an active heat exchanger. While doing this, 419 pounds of ammonia were released, causing upper body burns to the employee. The employee was hospitalized for treatment.
It seems the games may never end with HFO-1234yf and it’s designation as a Highly Hazardous Chemical (HHC) within the Process Safety Management Standard. A friend of a friend in the automobile manufacturing industry contacted me about their use of this new refrigerant. The friend/client shared all of my previous articles explaining how HFO-1234yf is
Employee #1 attempted to replace a leaking oil valve on a minus 30 degree freezer when a tank inside the freezer exploded. The company uses anhydrous ammonia to manufacture ice cream. The liquid ice cream mixture (at 50 degrees) is added to the tank. This freezer was down for seven days, and the tank’s oil
Employee #1 was working for a firm that, as a subcontractor, performed maintenance on commercial food service equipment. He was in the kitchen area of a single-story restaurant, attempting to locate the source of a refrigerant leak in an ice cream storage dipping cabinet. Employee #1 connected a cylinder containing pressurized nitrogen to the dipping
At approximately 9:50 a.m. Employees #1 and #2 worked as mechanical engineering technicians at a food cold storage facility. The two workers were troubleshooting an Auto-Purger. The Auto-Purger removed non-condensable material from the refrigeration system. It was mounted on a wall inside the facility’s anhydrous ammonia compressor room. At the time of the accident, the
Employees #1 and #2 were draining refrigerant oil from anhydrous ammonia refrigeration system oil traps in fruit cold storage warehouses. They were working approximately 24 feet above floor level on a mobile scissor lift personnel platform (Hyster, V24) using hand tools, including a wrench, a flashlight, and a bucket. The cause of the unexpected ammonia
At 2:30 p.m., Employee #1, Employee #2, and Employee #3 were tasked with dismantling a scaffolding level within a containment dome (identified as PMDI A-3600). During their dismantling work, at approximately 80 feet above the ground, alarms specific to phosgene gas were triggered. The process within this Dome was the manufacturing and using phosgene to
