Although maintenance workers had replaced the rupture disk by about 4: Operating procedures discussed plantwide, alarm operations and emergency muster points for partial and plant-wide evacuations; however, some employees had not been fully trained on these procedures. Good engineering practices always lead to good safety practices, as the above case shows. Heating ammonia inside a closed space was very dangerous operation and should be avoided without any over pressure protection. Copyright Chemical Engineering, Access Intelligence, LLC Relief Devices in case relief systems open at a preset pressure so that excess pressure and the contents causing that excess pressure can be relieved from a heat.
CSB investigators found that workers closed a valve that isolated the exchanger from a relief valve, to replace a burst rupture disk located below the relief valve. Later, EOC personnel compared the handwritten lists against the computer record of personnel who remained badged in to the production areas. He borrowed thirty five hundred dollars from his brother-in-law to start the company. Ammonia is detectable by its odor at 5 ppm. During the late s and early s cotton and rubber were considered the lifeblood of the industry Goodyear has historically sold direct through company-owned dealers and franchised hybrid of direct studies. During the incident however, a malfunction in the badge tracking system delayed supervisors from immediately retrieving the list of personnel in their area. As the ammonia absorbs heat from the process chemical flowing through tubes in the center of the heat exchanger, the ammonia boils in the heat exchanger shell Figure 2.
He borrowed thirty five hundred dollars from his brother-in-law to start the company. The CSB is a scientific investigative organization; it is not an enforcement or regulatory body.
Goodyear Tire and Rubber Accidental heat exchanger explosion Investigation report released by CSB
This product coming to light would put the company back on the road to success and gain back the trust of exchanger consumers. The tires case not being replaced with Goodyear ruptures because the customers at Rupfure wanted to replace their tires with the best possible tires that Sears offered, and the Goodyear tires were not in the offering.
Several hours later, after plant operations had resumed, a supervisor assessing damage in the immediate incident area discovered the body of a Goodyear employee located under debris in a dimly lit area Figure 1. Goodyear heat exchanger rupture case studyreview Rating: The rupture and release injured six employees.
It has a pungent odor and is hazardous when inhaled, ingested, or if it contacts the skin or eyes.
This isolated the ammonia side of the heat exchanger from all means of over-pressure protection. Valve bodies used for pressure control valves include: It is also important to have redundancies in a pressure relief system so that any individual equipment ruptures do not compromise the safety of a given process.
Goodyear uses pressurized anhydrous ammonia in the heat exchanger to cool the chemicals used to make synthetic rubber. Actuators can be pneumatic, meaning they use pressurized air to regulate valve opening xase closing, or electric, which goodyear electric power for regulation. The signal is usually sent to the actuator, which controls a case it is attached exchanger.
Goodyear heat exchanger rupture case study
Strategic action decisions define to whom we are going to sell and how 2. Supervisors and response team members were forced to notify some employees by radio and wordof-mouth of the vessel rupture and ammonia release.
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. Marketing mix decisions such as wxchanger, promotion, distribution, pricing, etc.
The catastrophic rupture threw debris that struck and killed a Goodyear employee walking through the area.
Copyright Chemical Engineering, Access Intelligence, LLC Relief Devices in case relief systems open at a preset pressure so that excess pressure and the contents causing that excess pressure can be relieved from a heat.
Chemical Safety and Hazard Investigation Board CSB is an independent Federal agency whose mission is to ensure the safety of workers, the public, and the environment by investigating and preventing chemical incidents. Company procedures called for routine evacuation and shelter-in-place drills four times a year, but such drills were not voodyear for several years prior to the incident.
The next day, when operators began a separate task to steam clean the process piping they closed a block valve between The ASME Code requires that when a pressure vessel relief device is temporarily blocked and there is a possibility of vessel pressurization above the design limit, a worker capable of releasing the pressure must continuously monitor the vessel. Piping carries product from the reactors to vase product finishing area. 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.
Goodyear heat exchanger rupture case study / paper writing help online
There are currently 30 different types of passenger car tires ranging in price, tread wear index’s, traction and temperature grades that Goodyear has to offer. The Houston facility, originally constructed in and expanded inproduces synthetic rubber in several process lines.
In fact, some of the employees responsible for accountability were unaware prior to the incident that their jobs could include this task in an emergency. Unaware that the isolation valve was also closed — thus leaving no means of relieving excess pressure in the exchanger, pressure continued to increase until the heat exchanger exploded violently.
The reason for this is according It had to decide whether to go ahead with the launch and if so, at what scale. Each heat 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. Since ammonia vapor is lighter than air, it tends to rise. Good engineering practices always lead to good safety practices, as the above case shows.
The pressure in the heat exchanger shell continued climbing until it violently ruptured at about 7: Many types of goodyear that have fully off and on configuration can be used as isolation valves, including: