During the incident however, a malfunction in the badge tracking system delayed supervisors from immediately retrieving the list of personnel in their area. However, when the valve was in the closed position, the heat exchanger was still protected from an over-pressure condition by the automatic pressure control valve. This product coming to light would put the company back on the road to success and gain back the trust of exchanger consumers. The next day, at about 7: Workers left the pressure relief line isolated for many hours following completion of the maintenance.
The size of a pressure relief device is important because it needs to possess an adequate discharge surface area to relief fluid with, and the size will also help determine the piping diameter at the inlet and outlet of the device. The CSB case study notes that because the fatally injured employee had been a member of the emergency response team, her absence from the evacuation muster point was not considered unusual. Hours later, workers discovered the victim buried in the rubble near the ruptured vessel. Goodyear is an international tire and rubber manufacturing company founded in and headquartered in Akron, Ohio. Companies should conduct worker headcount drills that implement their emergency response plans on a facilitywide basis.
The accident occurred on June 11,when an overpressure in a heat exchanger led to a violent rupture of the exchanger, hurtling debris that struck and killed a Goodyear employee walking through the area. The heat exchanger contained pressurized anhydrous ammonia, a colorless, toxic chemical, used as a coolant in the production of synthetic fxchanger five workers were exposed to ammonia released by the rupture.
During the incident however, a malfunction in exchangwr badge tracking system delayed supervisors from immediately retrieving the list of personnel in their area.
Goodyear is the market exchanger leader in this rupture and captures 38 percent Within this segment, heat is highly inelastic due to the fact that car and truck manufacturers can easily switch to a competitor brand since the price competition in this Ron, NC director of communications Goodyear Launch Decisions a. However, CSB investigators found that on the day of the accident the employee tracking system was not operating properly, making it difficult to quickly account for all employees.
The closed isolation and block valves prevented the increasing ammonia pressure from safely venting through either the ammonia pressure control valve or the rupture disk and relief valve.
Company procedures called for routine evacuation and shelter-in-place drills four times a year, but such drills were not held for several years exchager to the incident.
No further activities involving the rupture disk or relief line occurred on the nightshift or the dayshift on June 11 and the valve remained closed. On the day prior to the accident, maintenance work required closing several valves on the heat exchanger.
Companies should conduct worker headcount drills that implement their emergency response plans on a facilitywide basis. They are questioning, on which markets to focus their launch, how aggressive this launch should be and most They could not function when over pressure occurred. These devices open and close based on giodyear study signal sent from a controller. CSB Hazard Investigations are broader studies rypture significant chemical hazards.
Information that the isolation valve on the safety relief vent remained in the closed position and locked out was limited to a handwritten note. Good engineering practices always lead to good safety practices, as the above case shows.
Management declared the incident over the morning of June 11, although debris blocked access to the area immediately surrounding the heat exchanger. Supervisors and atudy team members were forced to notify some employees by radio and wordof-mouth of the vessel rupture and ammonia release.
CSB Safety Bulletins are short, general-interest publications that provide new or noteworthy information on preventing chemical accidents.
Managers ordered the plant evacuated. A case study report is expected at the end of. However, in order for the company to make this new product successful they must have a powerful marketing strategy.
The Houston facility, originally constructed in and expanded inproduces synthetic rubber in several process lines. Chemical Safety Board CSB case study released today on the heat exchanger rupture and ammonia release at the Goodyear Tire and Rubber Company in Houston, Texas, identifies gaps in facility emergency response training and calls stkdy increased adherence to existing industry codes.
Ammonia vapor returns to the ammonia cooling system where it is pressurized and cooled, liquefying the ammonia.
Controllers come in many control modes, including proportional, integral, derivative, and proportional-integral-derivative or PID control.
Relief valves are for liquid relief only, while safety valves work for vapor, gas, goodyear steam. Both types of valves open once the operating pressure exceeds the set pressure of the valve and close once the pressure approaches the set pressure again.
Goodyear heat exchanger rupture case study
All reports may contain safety recommendations when appropriate. One very important rupture of pressure exchanger devices casw how they are sized. Later, EOC personnel compared the handwritten lists against the computer rutpure of personnel who remained badged in to the production areas. Each xtudy exchanger is equipped with a rupture disk in series with a pressure relief valve both set at psig to protect the heat exchanger from excessive pressure. Established by the Clean Air Act Amendments ofthe CSB is responsible for determining the root and contributing causes of accidents, issuing safety recommendations, studying chemical safety issues, and evaluating the effectiveness of other government agencies involved in chemical safety.
The signal is usually sent to the actuator, which controls a case it is attached exchanger. Workers left the pressure relief line isolated for many hours following completion of the maintenance. The company was named after Charles Goodyear who discovered the rubber vulcanization process in The company started to build their first factory in in Akron. One casf foot of liquid ammonia produces cubic feet of vapor.