Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!
How deep is too deep to run a successful indirect inspection of Horizontally Directionally Drilled (HDD) installed pipelines and still have valid results? Real world examples of indirection inspections at various depths. Alternate methods for inspection. Suggested indirect inspection criteria.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
Recent close-interval potential surveys have raised concerns about the accuracy of potential measurements on older, poorly-coated pipelines. Two sources of error were identified: metallic IR-drops and equalization currents.
Indirect assessment techniques (special over-the-line potential and soil corrosivity surveys) were applied on an electrically discontinuous effluent sewer land outfall. Critical areas were excavated and direct assessment performed. Mitigation methods were recommended.
Pipelines have been considered one of the safest methods of transporting energy from one place to another. This is achieved through a systematically planned, documented, and comprehensive pipeline integrity management (PIM) program. PIM covers areas such as engineering, operations, inspections and maintenance, health and safety, and environment protection.
Electrical potential surveys are typically required to be completed on a periodic basis on cathodically protected structures such as underground pipelines. However, proving that a cathodic protection system is providing the degree of corrosion protection required can often be a time-consuming and error prone endeavor. It is a typical practice, and often required, to interrupt the CP source(s) to carry out these surveys, the accuracy of which is affected by several factors, including the presence and inherent function of DC decouplers.