The probable cause of the rupture was thermal expansion of the bottle's contents. This zero head space requirement may be inappropriate for these types of samples. Zero head space leaves no room for expansion of sampled media that have significant thermal expansion coefficients.
Thermal expansion needs to be considered when deciding sampling protocol.
Waste Generator Services work control procedures should cover all aspects of sampling including sample preparation for shipment. The rupture resulted in a release, which spilled onto a laboratory counter and floor and splashed the employee handling the sample jar. The samples were taken from a 30- gallon drum at CFA 637, which contained approximately 15 gallons of waste. The waste was primarily paint waste from punctured aerosol cans. It also contained waste solvent from the CFA paint shop.