NDT

MISTRAS SERVICES > CENTERS OF EXCELLENCE > FOSSIL POWER > FEEDWATER HEATERS

CENTERS of EXCELLENCECenter of Excellence
Above Ground Storage Tanks
Acoustic Emission
API Turnaround Planning
Asset Integrity Management
Automated Ultrasonics
Diving
Engineering Services
Fall Protection
Fossil Power
Infrastructure
Inspection IT
Mechanical Integrity
Nuclear Power
Pipeline Integrity
Predictive Maintenance
Refractory Inspection
Ropeworks® Rope Access
Substation Reliability
Transportation
Tube Inspection
Unmanned Systems
Feedwater Heater NDT
Related Publications  |  view all
Fossil Power Plant Services

FEEDWATER HEATERS INSPECTION

Tube failures in feedwater heaters are another major cause of forced outages in a fossil power plant. Inspection of HP feedwater Heaters produces one of the highest cost benefits of any NDT inspection in a power plant. The most common tube materials in feedwater heaters are carbon steel, stainless steel, brass and copper-nickel alloys. OD erosion is the most common type of damage in carbon steel tubes.

The tubing in the feedwater heaters should be periodically inspected to determine its condition. Depending on the rate of degradation, an inspection interval of 3 to 6 years is recommended. Selection of tubes for inspection is the key to an effective feedwater heater inspection. In addition to regular inspections, inspection after a tube failure is highly recommended. A tube failure is an indication of damage and impending tube failures.

Conventional eddy current is applied for non-ferromagnetic materials. Remote Field Eddy current is quite effective for inspection of carbon steel tubing. In addition to remote field, ultrasonic IRIS techniques can be applied for inspection. While the IRIS techniques are more accurate, it is slow compared to the remote field eddy current technique. In general Remote field is used for the normal inspection and IRIS is utilized for verification.
Heroes Wanted: At MISTRAS, we protect critical assets. Sound familiar? Current openings include: Technicians, Engineers, Programmers, Inspectors. Make our mission your next. Read more...
MISTRAS Careers
| More

NEED ASSISTANCE?
Call us at 1.609.716.4000
Engineering services are not being offered and will not be rendered where prohibited by law or where the company is not licensed to provide engineering services if a license is required.
Copyright © 1995-2016 MISTRAS Group, Inc. All Rights Reserved.  |  Privacy  |  Terms of Use  |  Search  |  Problems or Comments? Send Feedback Feedback