1978-09-20 Regular Meeting - Laserfiche WebLink

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- ~ • r Honorable J. J. Meza, Mayor Page Three • CJ September 18, 1978 8. Prior to being coated, the pipe will undergo another extensive non-destructive inspection by the use of magnetic particle equipment to check for transverse and longitudinal defects along caith an additional ultrasonic inspection of the longitudinal seam. 9, The pipe along with any other component in the system which is to be buried will be provided with protection. against external corrosion. This protection encompasses the use of an external protective coating which conforms to the Department of Transportation Spec. Fart I95, sub- part E, Sec. 195.238. A closely moaitoried inspection is made by Dow inspectors of all coating application processes and the materials used. In addition, of ter the pipe is in place, a cathodic protection system will.be installed for all buried facilities to mitigate corrosion deterioration that might result in structural failure. This system will be regularly checked to insure that the protection is ade- quate at all times. 10. All girth welds made on the pipe in the coating m.%II or field will be x-rayed to detect any flaws in the pipe used in bayou crossings. 11. All construction work performed ~,r~.ll have a Dow inspector present to insure that all regulatiu~:~.~ and good pipeli.ning practices are enforced. l2. The pipe will be buried, throughout this area, w%th-a m3.nimum of four feet (4') of cover except on bayou crossings where a minimum of five feet (5') of cover will be used. Selective backfilling will be required. Road and Street crossings will be cased and will be buried to have a minimum cover of three feet (3') at the lowest point in borrow ditches. l3. The pipe at each railroad or highway crossing will be Cased and installed so as to adequately withstand the dynamic forces exerted by anticipated traffic loads. •