Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

98709 CORROSION FAILURES OF COPPER/COPPER ALLOY PIPING IN BUILDING PIPING SYSTEMS

Picture for 98709 CORROSION FAILURES OF COPPER/COPPER
Available for download
Product Number: 51300-98709-SG
ISBN: 98709 1998 CP
Author: Richard A. Hoffmann
$0.00
$20.00
$20.00
The focus of this paper is on copper and copper alloys. Next to steel, copper pipe and tubing are the most widely used materials in building water systems. Its usage in these applications is based on its excellent corrosion resistance, high conductivity and excellent formability. This paper presents three separate case histories that deal with copper/copper alloy piping failures in buildings. Two represent failures in which the pipe or tube product was the primary containment boundary, and the third occurred in copper tubes which were part of an evaporator section in a freon chiller. In every case, an unexpected external influence caused the failure. The first case is a copper tube failure from a high-rise hotel in which the tubes acted as expansion loops in the hot water portion of HVAC equipment at the individual guest room. The piping was 2 1/2-inch (6.35 cm) copper tubing which split axially and leaked. These failures took place before the facility was in service. The second case involves externally finned and internally enhanced copper tubes used in the evaporator section of a chiller; the tubes failed through extensive corrosion after a winter lay-up following the first season of chiller operation. In the tfiird case, a brass pipe failed through stress corrosion cracking. This pipe was in hot water service, which was an inappropriate usage of this pipe product. The pipe experienced external damage from pipe hangers attached to support other pipes running beneath this hot water pipe. Keywords: copper, copper alloys, stress corrosion cracking, failures, corrosion, copper tubes
The focus of this paper is on copper and copper alloys. Next to steel, copper pipe and tubing are the most widely used materials in building water systems. Its usage in these applications is based on its excellent corrosion resistance, high conductivity and excellent formability. This paper presents three separate case histories that deal with copper/copper alloy piping failures in buildings. Two represent failures in which the pipe or tube product was the primary containment boundary, and the third occurred in copper tubes which were part of an evaporator section in a freon chiller. In every case, an unexpected external influence caused the failure. The first case is a copper tube failure from a high-rise hotel in which the tubes acted as expansion loops in the hot water portion of HVAC equipment at the individual guest room. The piping was 2 1/2-inch (6.35 cm) copper tubing which split axially and leaked. These failures took place before the facility was in service. The second case involves externally finned and internally enhanced copper tubes used in the evaporator section of a chiller; the tubes failed through extensive corrosion after a winter lay-up following the first season of chiller operation. In the tfiird case, a brass pipe failed through stress corrosion cracking. This pipe was in hot water service, which was an inappropriate usage of this pipe product. The pipe experienced external damage from pipe hangers attached to support other pipes running beneath this hot water pipe. Keywords: copper, copper alloys, stress corrosion cracking, failures, corrosion, copper tubes
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 01486 FAILURES OF COPPER POTABLE WATER PIPING
Available for download

01486 FAILURES OF COPPER POTABLE WATER PIPING DUE TO DESIGN, MATERIALS AND POOR WORKMANSHIP

Product Number: 51300-01486-SG
ISBN: 01486 2001 CP
Author: R.S. Charlton
$20.00
Picture for 00652 PITTING CORROSION IN DOMESTIC COPPER
Available for download

00652 PITTING CORROSION IN DOMESTIC COPPER PLUMBING THE RISE AND FALL OF THE "PITTING WATER" THEORY

Product Number: 51300-00652-SG
ISBN: 00652 2000 CP
Author: Peter F. Ellis II
$20.00
Picture for 96294 THE INFLUENCE OF POTABLE WATER
Available for download

96294 THE INFLUENCE OF POTABLE WATER BIOFILMS ON COPPER CORROSION

Product Number: 51300-96294-SG
ISBN: 96294 1996 CP
Author: BJ Webster, DB Wells, PJ Bremer
$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