COMPLIANCE INFO_2007-2008 - Laserfiche WebLink

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Enclosure II Visual Inspection of Thermoplastic Flexible Piping Systems Visible evidence that might indicate the integrity of thermoplastic flexible piping system is compromised includes: • Connections, riser pipes and flex connectors found within the sumps where the piping is terminated may be twisted, over -stressed or pushed out of normal alignment. • The piping may be over bent within the piping sump or folded over itself (kinked). • The outer jacket of double -walled (coaxial) piping may extend over the metallic ferrule of the pipe coupling. • The outer jacket of double -walled (coaxial) piping may split as it attempts to grow over the metallic coupling. • The piping may be swollen and appear to be bulging or "ballooned". • The piping may be wrinkling or it may be sticky/spongy and softer than it was originally. • The outer walls of the primary piping and/or the secondary containment may be cracking. • The rubber boots that are installed in the walls of the containment sumps may be stretched or torn. • The "donuts" that make up part of the boot of some piping systems may be dislodged or the clamps may not be in place. • The rubber "test" boots that are installed at piping terminations of some coaxial pipe systems may appear to be compressed or distorted. • The metallic connectors that are part of some piping system couplings may be cracked. NOTE: Photographs that illustrate these points are available at: www.dep.state.fl.us/waste/quick topics/publications/pss/tanks/FlexPipe/MSshow pdf UST owners or operators with site-specific concerns regarding their facility should contact their local agency. A comprehensive list of UST local agencies can be found at www.waterboards.ca.gov . Additionally, UST owners or operators may want to contact the piping manufacturer or the piping installation contractor to discuss specific piping concerns. A website directory of the Petroleum Equipment Institute's member companies can be found at www.pei.org.