Menu
Search
Filters
Close
Menu

51316-7023-Methodology For The Evaluation Of Cleaning Pigs On Sludge Deposits From Corrosion Pits

Picture for Methodology For The Evaluation Of Cleaning Pigs On Sludge Deposits From Corrosion Pits
Available for download

In an effort to increase the knowledge of the cleaning efficiency of typical pig designs at removing sludge and debris from pre-existing corrosion pits, a novel test setup and method has been devised.

Product Number: 51316-7023-SG
ISBN: 7023 2016 CP
Author: Winston Mosher
Publication Date: 2016
Industry: Pipelines, Tanks, and Underground Systems
$0.00
$20.00
$20.00

 For decades pipelines have been operated in remote and environmentally sensitive areas as well as within populated locations. Proper maintenance of pipelines can prevent internal corrosion to a remarkable degree. The methods employed are primarily mechanical cleaning (pigging) and chemical treatment (corrosion inhibitors, biocides), often used in combination. Corrosion issues arise in areas of the pipeline typically under localized areas containing sediments that tend to be an agglomeration of solids, waxes and water. The resulting corrosion defects can then become ideal locations for sediment and water to continue to gather and create deep, dirt filled localized pitting that cannot be protected through chemical treatment without the aid of mechanical cleaning (pigging).

In an effort to increase the knowledge of the cleaning efficiency of typical pig designs at removing sludge and debris from pre-existing corrosion pits, a novel test setup and method has been devised.

A recirculating flow loop was constructed with the capabilities of launching a 102 mm (4") diameter cleaning pig using either crude oil or water as the pumped fluid. During the test, a pig would be passed through a test apparatus which housed flush mounted coupons with variously sized pits, packed with manufactured sediment (sludge). Following the pigging operation, the coupons were removed and analyzed via laser scanning techniques to measure sludge volume removal and maximum depth of cleaning. The pigs’ cleaning abilities were compared based on both metrics and information was gathered based on the profile of the sludge’s surfaces post pigging, as well as images of the pigs with adhered sludge.

Key words: downloadable, Pigging, under deposit corrosion, pipeline integrity, pipeline maintenance, crude oil

 

 For decades pipelines have been operated in remote and environmentally sensitive areas as well as within populated locations. Proper maintenance of pipelines can prevent internal corrosion to a remarkable degree. The methods employed are primarily mechanical cleaning (pigging) and chemical treatment (corrosion inhibitors, biocides), often used in combination. Corrosion issues arise in areas of the pipeline typically under localized areas containing sediments that tend to be an agglomeration of solids, waxes and water. The resulting corrosion defects can then become ideal locations for sediment and water to continue to gather and create deep, dirt filled localized pitting that cannot be protected through chemical treatment without the aid of mechanical cleaning (pigging).

In an effort to increase the knowledge of the cleaning efficiency of typical pig designs at removing sludge and debris from pre-existing corrosion pits, a novel test setup and method has been devised.

A recirculating flow loop was constructed with the capabilities of launching a 102 mm (4") diameter cleaning pig using either crude oil or water as the pumped fluid. During the test, a pig would be passed through a test apparatus which housed flush mounted coupons with variously sized pits, packed with manufactured sediment (sludge). Following the pigging operation, the coupons were removed and analyzed via laser scanning techniques to measure sludge volume removal and maximum depth of cleaning. The pigs’ cleaning abilities were compared based on both metrics and information was gathered based on the profile of the sludge’s surfaces post pigging, as well as images of the pigs with adhered sludge.

Key words: downloadable, Pigging, under deposit corrosion, pipeline integrity, pipeline maintenance, crude oil

 

Product tags
Also Purchased
Picture for BENEFICIAL EFFECTS OF CHEMICAL TREATMENT AND MAINTENANCE PIGGING PROGRAMS IN RETURNING PIPELINE TO P
Available for download

51312-01098-BENEFICIAL EFFECTS OF CHEMICAL TREATMENT AND MAINTENANCE PIGGING PROGRAMS IN RETURNING PIPELINE TO P

Product Number: 51312-01098-SG
ISBN: 01098 2012 CP
Author: Daniel E. Powell
Publication Date: 2012
$20.00
Picture for 96048 SOLID GEL PIGS FOR CLEANING PRODUCTION
Available for download

96048 SOLID GEL PIGS FOR CLEANING PRODUCTION PIPELINES

Product Number: 51300-96048-SG
ISBN: 96048 1996 CP
Author: Daniel E. Powell, W. Mark Bohon, Gary R. Chesnut
$20.00
Picture for 96034 A PCIRTABLE PIG LAUNCHER AND
Available for download

96034 A PORTABLE PIG LAUNCHER AND RECEIVER TO ENABLE MAINTENANCE AND SMART PIGGING OF PRODUCTION PIPELINES

Product Number: 51300-96034-SG
ISBN: 96034 1996 CP
Author: Michael A. Watts, Clay Borden, Stan Pavlas, Daniel E.Powell, Louis Kozisek
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support