Magnetek: New Case Applying the Daubert Standard

The decision of the United States Supreme Court in Daubert v. Merrell Dow Pharmaceuticals, Inc., 590 U.S. 579, 125 L. ED. 2d 469, 113 S. CT. 2786 (1993) forever changed the field of expert testimony in federal court cases. It has subsequently been adopted in a number of state court jurisdictions across the country as the basis for evaluating and admitting expert testimony. In the years since the Daubert decision, expert witnesses in virtually all fields have been subjected to a new level of scrutiny by trial judges acting as the “gatekeepers” of expert testimony in court proceedings. In fire litigation cases, the effect of this decision has fundamentally altered the process of proving the origin and cause of a fire in every type of case, from a product liability action to an arson defense.

A recent decision of the United States Court of Appeals for the Tenth Circuit has underscored the importance of properly evaluating and presenting expert testimony in fire litigation cases. Truck Insurance Exchange v. MagneTek, Inc., 2004 U.S. App. LEXIS 3557 (February 25, 2004) not only demonstrated the application of the Daubert standard for the admissibility of expert testimony, but effectively undermined a long-standing theory of fire science which has been used in a number of previous cases to prove the cause of a fire.

The MagneTek case involved a subrogation action filed by Truck Insurance Exchange against the manufacturer of a fluorescent light ballast alleged to have caused a fire which destroyed a restaurant in Lakewood, Colorado. When the fire department first responded to the alarm, they found heavy smoke in the restaurant but no open flames. The fire subsequently broke through the kitchen floor in the restaurant from the ceiling of a storage room in the basement. Before the fire could be controlled and extinguished, it destroyed the restaurant and caused damages in excess of $1.5 million.

The fire was investigated by the local Fire Protection District and a private fire investigation firm hired by the insurer. Following a thorough investigation of the fire scene, it was determined that the fire had started in a space between the basement storage room ceiling and the kitchen floor. In the basement, the investigators found the remains of a fluorescent light fixture that had been mounted to the ceiling of the storage room.

They determined the light fixture had been located in the area of origin of the fire and concluded that the fire had been caused by an apparent long-term failure of the ballast in the light fixture.

The remains of the fluorescent light fixture were examined by the investigators and an electrical engineer. They determined the ballast had been manufactured by MagneTek. They observed oxidation patterns on the light fixture indicating an internal failure, along with discoloration of the heating coils of the ballast suggesting it had shorted to cause overheating which resulted in the fire.

The ballast contained a thermal protector designed to shut off power to the fixture when the internal temperature exceeded 232 degrees Fahrenheit. The thermal protector in the ballast was tested and appeared to function properly even after the fire. However, the investigators remained convinced that the ballast had somehow failed, overheated and started the fire.

Tests were conducted with similar ballasts manufactured by MagneTek which showed that at least one of the exemplar ballasts when shorted would not cut off power to the fixture until the internal temperatures had reached at least 340 degrees Fahrenheit and would continue to provide power to the fixture even when the ballast maintained constant temperatures of 300 degrees or more. The investigators theorized that the heat from the ballast had caused pyrolysis to create “pyrophoric carbon” in the adjacent wood structure of the ceiling over a prolonged time, which would be capable of ignition at temperatures substantially below the normal range of 400 degrees Fahrenheit or more for the ignition of wood. The theory of pyrolysis and the formation of pyrophoric carbon has been the subject of a number of studies, reviews and articles by fire investigators and fire scientists. It has been cited as the cause of a number of fires having no other apparent explanation, often linked to overheated wires in structures within walls, ceilings and floor areas. As the MagneTek court would note, however, the validity of this theory has been discussed and debated by fire investigators and fire scientists for a number of years.

The investigators in this case acknowledged that electrical wiring ran through the ceiling area of the storage room near the fluorescent light fixture, but discounted the possibility of a failure in the electrical wiring. They reported finding no evidence of arcing or shorting in the electrical wiring, although the fire at the restaurant resulted in the destruction of most of the electrical wiring evidence in the area. Because they concluded the fire had originated in the immediate area of the light fixture, they concluded the only source of ignition for the fire was the light fixture and its ballast. The theory of the formation of pyrophoric carbon was the foundation of the plaintiff’s case against MagneTek. The ballast in the light fixture showed no signs of failure in the thermal protector, which would have limited the heat generated by the ballast to about 232 degrees Fahrenheit. Even with the exemplar ballast whose thermal protector failed to perform as it had been designed, the temperatures generated did not exceed 340 degrees Fahrenheit. The investigators admitted the ignition temperature of wood is typically at least 400 degrees Fahrenheit and the temperatures from the ballast alone would not have been sufficient to cause ignition. Their theory that the ballast had caused the fire depended upon the concept of pyrophoric carbon to allow ignition to occur at a lower temperature within the range of the temperatures generated by the ballast.

Following discovery in the case, MagneTek filed a “Daubert Motion” to exclude the testimony of the experts that the ballast had caused the fire. MagneTek asserted that the theory of pyrolysis was not sufficiently reliable and scientifically verifiable to be offered by the experts in support of their conclusion for the cause of the fire. It was a challenge to the “reliability” of the experts’ theory which required a consideration of whether the reasoning and methodology underlying the testimony was scientifically valid as mandated by Daubert and Rule 702 of the Federal Rules of Evidence.

The Supreme Court in Daubert had outlined a number of factors that, while not an exclusive list of considerations for a trial court, should be examined in making the determination of reliability. Those factors include: (1) whether the opinion has been subjected to testing or is susceptible of such testing; (2) whether the opinion has been subjected to publication and peer review; (3) whether the methodology used has standards controlling its use and a known rate of error; and (4) whether the theory has been accepted in the scientific community. Daubert at 590.

In proving the scientific validity of an expert’s reasoning and methodology, the court noted that “the plaintiff need not prove that the expert is undisputably correct or that the expert’s theory is ‘generally accepted’ in the scientific community. Instead, the plaintiff must show that the method employed by the expert in reaching the conclusion is scientifically sound and that the opinion is based on facts which sufficiently satisfy Rule 702's reliability requirements”.

The Tenth Circuit applied the standard of appellate review for a trial court’s ruling on a Daubert issue: the showing of an “abuse of discretion” demonstrating that the appellate court has “a definite and firm conviction that the lower court made a clear error of judgment or exceeded the bounds of permissible choice in the circumstances.” United States v. Ortiz, 804 F.2d 1161 (10th Cir. 1986). The court then looked to the ruling of the trial judge finding that the testimony of the experts failed to satisfy the reliability standard under Rule 702 and the Daubert decision. The electrical engineer testifying on behalf of Truck Insurance Exchange was a highly credentialed expert with an advanced degree in physics from Oxford University and over twenty (20) years of experience in the study of fire and explosion incidents. Both the trial court and the appellate court observed that this expert was unquestionably qualified to testify as an expert witness under Rule 702. However, his hypothesis of pyrophoric carbon as the cause of ignition of the wood in the area surrounding the light fixture could not be considered a reliable basis for the admission of his expert testimony on the cause of the fire.

The reliability standard under Daubert applies to both the reliability of the theory itself and the reliability of its application to the facts of the case. The court focused upon the first component of this reliability criteria. In support of the theory of its experts, the insurer had introduced into evidence three (3) publications on the theory of pyrophoric carbon. Those articles were written by some of the most respected fire scientists in the world, but those articles and case studies acknowledged that the process of pyrophoric carbonization occurred over an undefined period of time described as “a period of years” or “a very long time” with no specific parameters for the timing and sequence of events. One of those articles acknowledged that there are “a number of things not known about the process” and that “it may be many decades before it will be solved by sufficiently improving theory.” The article concluded by stating that “the phenomenon of long-term, low-temperature ignition of wood has neither been proven nor successfully disproven at this time.” The plaintiff’s engineer had stated in his deposition that the process “depends on a lot of factors, as yet quantitatively unidentified.” He went on to testify that “you would have to have a good theory of pyrophoric carbon and formation and the chemical kinetics of that; and there isn’t one. . .” The other experts testifying for the plaintiff in this case based their theory of pyrophoric carbon on their experience in the investigation of fires without any reference to a specific scientific basis for that theory. The court noted that under NFPA 921 an investigator offering the hypothesis of an appliance fire must first determine the ignition temperature of the available fuel in the area and then must determine the ability of the appliance or device to generate temperatures at or above the ignition temperature of the fuel. In that regard, the experts failed on both counts. The ignition temperature of the fuel (wood) could not be scientifically proved to be below the 400 degrees Fahrenheit threshold for the ignition of most types of wood and the tests of the ballasts had shown that even with a failed thermal protector, a ballast could not generate temperatures anywhere near that range. Their hypothesis would have to be based upon either an unreliable theory (pyrophoric carbon) or unsubstantiated assumptions and speculation about the temperature of the ballast which contradicted their own test results. As such, their testimony could not be admitted.

The appellate court affirmed the ruling of the trial court that the testimony of all of the experts had been shown to be not sufficiently reliable to be admitted under the standards of the Daubert decision. Without the testimony of the experts, Truck Insurance Exchange could not make a prima facie case for establishing the cause of the fire. Accordingly, the trial court entered Summary Judgment in favor of MagneTek and the appellate court affirmed this decision, as well.

This decision has significant implications for the litigation of fire cases everywhere. It demonstrates the importance of developing sound and scientifically verifiable theories for proving the cause of a fire as required by the standards of the Daubert decision. Moreover, it provides a compelling example of how a theory which has not been validated and generally recognized by others in the scientific community will not withstand a Daubert challenge in court.

The lessons from this decision are many. First and foremost, experts must be prepared to prove the reliability of their investigative methodologies and theories to the satisfaction of the trial court. Experience alone is not sufficient. Even a theory which appears on the surface to be a reasonable and logical theory for the cause of a fire must be shown to be scientifically verifiable. Without a foundation in science, even the most experienced investigator will never be allowed to testify in court. For the parties hiring those investigators in their cases, there must be an awareness of the requirements for proving a case under investigative methodologies and theories which will meet the reliability standards of the Daubert decision, to guide them both in the selection of the expert used to investigate the fire and in the decision to litigate the case. For the attorneys handling those cases, there must be an awareness of those issues in order to successfully litigate that case at trial. The investigator, the client and the attorney each have a responsibility to ensure that cases are properly investigated and properly litigated. Without that awareness and recognition, the MagneTek case is a striking example of the consequences to be faced.