c. Repair leaks at faulty area 



1) Equipment entry - dragline, side boom, welding equip- 

 ment 



2) Dragline uncovers spot 



3) Coating removed 



4) Reweld area 



5) X-ray inspect rewelds 



6) Coat pipe 



7) Backfill 



8) Equipment exit 

 B. Operation of pipeline (5-30 yr) 



1. Pump station 



a. Daily vehicle movement with shift changes 



b. Normal maintenance and operation allow minor leaks drips 



c. Scraper, balls, pigs result in vaste which must be disposed 

 of 



d. Management of human sanitation -nd trash 



2. Pipeline 



a. Leaks detectable by pressure drops, gas sniffers from air- 

 planes, and large oily, wet areas seen from air 



b. Repair requires steps IV.A.3.C 



c. Periodic maintenance of cathode equipment 



1) Placement of new electrodes 



2) Periodic inspection of pipe - see steps IV.A.3.C 



438 



