INSPECTION SERVICES Buried Piping Symptoms Services Buried piping systems often emit telltale signs that are symptomatic of system problems. These symptoms, if left unchecked, can lead to physical deterioration and eventual failure of the system. These symptoms include: • Excessive demand for makeup water • Steaming vents and manholes • Dead grass or melted snow directly above the pipeline • Water running out of conduit drains • Significant increase in energy costs • Plugged heat traced lines Locating leaks accurately in buried thermal distribution sys- tems requires mere than the latest testing...

Sonic Leak Detection Survey is a detailed aboveground search to locate, pinpoint and classify leaks on buried [> water distribution systems. Test Method Testing is conducted using sonic amplification equipment designed to filter out all sounds except those generated by leaking water. Special ground contact microphones and direct contact microphones are used to conduct the survey over the buried piping. Leak locations are pinpointed by technicians trained to identify leak sound frequencies. Report Documentation Customer supplied piping drawings are marked showing leak locations. Sketches of each...

Ultrasonic Testing Survey Ultrasonic Testing Survey measures the remaining pipe wall h> thickness. Corrosion, erosion and general pitting can also Test Method Exposed pipe is tested using an ultrasonic test meter incor- porating a transducer probe. The probe is placed on the pipe, sound waves are transmitted through the pipe wall and re-flected back to the transducer from the back wall of the pipe. The time out and back is converted mathematically Report Documentation The report compares thicknesses recorded during the sur- vey to ANSI B31.1 Code for Pressure Piping at the operating temperature...

Buried Thermal Distribution Systems are readily susceptible to external corrosion because of direct exposure to low resistivity soil. If the system is not inspected and maintained on a regular schedule, physical deterioration and a steady decline in system per- formance will occur until total failure. Through the years, leaks in underground piping systems were often left unaddressed because there were no accurate, cost-effective methods to test and evaluate them. Buried thermal distribution systems must be maintained for maximum performance. PERMA-PIPE Inspection Services responds to customer...

ENERGY DISTRIBUTION INSULATED PIPING SYSTEMS 7720 North Lehigh Avenue The information contained in this document is subject to change without notice. PERMA-PIPE, Inc. believes the information contair to be reliable, but makes no representations as to its accuracy or completeness. O2000 PERMA-PIPE, Inc. All Rights Reserved Form No. PPIS (9/00 6M CG) ^S^'SDC K^' w'If" eX^e * 33 ***** in,*eriStandard Terms and C0"*0^ °< ^for these P™<J"0ts- ln ™ v ' PERMA-PIPE be liable for any direct, incidental or consequential damages.