1、Lessons Learned Entry: 0618Lesson Info:a71 Lesson Number: 0618a71 Lesson Date: 1998-05-13a71 Submitting Organization: KSCa71 Submitted by: Lisa Grace KestelSubject: Ruptured Paint Drum Incident Description of Driving Event: A bulging 55-gallon drum of paint wastes from Cape Canaveral Air Station, wh
2、ich had been overpacked into an 85-gallon salvage drum, ruptured while in storage at an offsite hazardous waste storage facility in Emelle, Alabama. Pressure had built up inside the drum to the point where both the inside drum and recovery drum burst, propelling the drum 26 feet in the air, at which
3、 point it dented the roof and spilled hazardous waste into the containment area. The incident occurred late at night and no personnel were injured or exposed.Primary Cause: The waste stream contains a mixture of solvent-based paints and cleanup solvents. None of the vapor pressures of the waste comp
4、onents were great enough to cause failure of the drum. The pressure build-up was likely due to a chemical reaction producing a gaseous product. Polyurethane paint components of the waste stream contain isocyanate compounds, which react with water to produce carbon dioxide. Although there were no acc
5、ounts of water-based paints being added to the drum, the generator also uses latex paints, and some may have been accidentally added to the drum. The drum was routinely opened and closed during waste accumulation allowing release of the pressure. It was only when the drum was sealed for storage that
6、 pressure increased to deform and eventually rupture the drum.Contributing Factors: The bulging condition of the drum was first noticed at the onsite CCAS hazardous waste storage facility. The drum was overpacked into an 85-gallon recovery drum to correct the container condition deficiency, but the
7、facility operator was unaware that the drum was continuing to build pressure. The 85-gallon salvage drum then obscured the condition to the hazardous waste shipper, transporter, and offsite receiving facility.Lesson(s) Learned: Provided by IHSNot for ResaleNo reproduction or networking permitted wit
8、hout license from IHS-,-,-1. Paint waste generators need to be aware of the potential for reaction between polyurethane and latex-based paint compounds. Precautionary warnings will be added to the technical instructions for paint waste streams.2. The routine practice of overpacking paint waste drums
9、 into salvage drums will be discontinued at KSC. This will facilitate detection of pressure buildup within drums.3. Salvage drums for paint wastes will be scrutinized to determine defects to the inside packaging. The new Waste Management Handbook, KHB 8800.7B, includes a requirement for generators t
10、o annotate salvage drums to alert personnel of bulging containers. Any salvage drums that contain bulging drums will be monitored for pressure. The use of gauges and/or relief valves on suspect drums is being examined.Recommendation(s): See Lesson(s) Learned.Evidence of Recurrence Control Effectiven
11、ess: N/ADocuments Related to Lesson: N/AMission Directorate(s): N/AAdditional Key Phrase(s): a71 Hazardous/Toxic Waste/MaterialsAdditional Info: Approval Info: a71 Approval Date: 1999-04-12a71 Approval Name: Ronald Goodina71 Approval Organization: EC-H3a71 Approval Phone Number: 407-867-3183Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
