Results 111 to 120 of about 177 (158)

Chemical Cleaning of Feedwater Heaters

CORROSION 1974, 1974
In a paper delivered before the 1960 meeting of the American Society of Mechanical Engineers(1), the need of preoperational cleaning of the preboiler system of utility boilers was brought into sharp focus for the first time. This viewpoint of the utility operator met with acceptance and today nearly every specification prepared for new boiler ...
openaire   +1 more source

Deaerators and Feedwater Heaters

2012
Deaerators and feedwater heaters are important components of any power utility boiler condensate and feedwater supply system. Deaerators are found in all industrial plants using fired boilers for process steam production. Feedwater heaters of the type described here are usually found only in power generating plants using steam turbines as they rely on ...
openaire   +1 more source

Post Mortem of a Feedwater Heater With Drains Cooler Failures

ASME 2015 Power Conference, 2015
The Paradise Generation Station Unit 3 is a supercritical fossil plant with a 1,078 MW rated capacity. The #3B feedwater heater (FWH) is a two-zone (condensing and subcooling) horizontal FWH and is the second of four high pressure (HP) FWHs after the boiler feed pump in the “B” string, one of two HP FWH strings (See Figure A2 at the end of this paper ...
Eric Svensson, D. Chad Halcomb
openaire   +1 more source

Limitations of 439 SS in HP Feedwater Heater Application

ASME 2010 Power Conference, 2010
This paper presents a case history of problems experienced with a replacement HP feedwater heater that was manufactured with Type 439 stainless steel tubing. The subject heater was installed after numerous problems during manufacturing and was commissioned for service in February 2007. The first failures were experienced after only 2 years of operation.
Silvia Khurrum, Michael Catapano
openaire   +1 more source

Prevention of corrosion-related failures in condensers and feedwater heaters

Journal of Materials for Energy Systems, 1982
The common alloys used for tubing in power plant feedwater heaters and condensers are identified and the major corrosion problems encountered in these components are described. The frequency of failure and failure modes in both components are shown to be alloy specific.
J. A. Beavers, A. K. Agrawal, W. E. Berry   +2 more
openaire   +1 more source

High Pressure Feedwater Heater Cup Forging Alteration

Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues, 2014
American Exchanger Services, Inc (AM-EX) performed a 2012 repair of a vertical head-up High Pressure (HP) Feedwater Heater breech lock channel during a shop based re-tube for the American Electric Power (AEP) Wilkes Power Plant, Unit 1. The 48 year old channel is a carbon steel cup-forging that had 1-1/2″ deep circumferential cracks extending radially ...
Thomas R. Muldoon, Bob Cashner, Sara Vestfals   +2 more
openaire   +1 more source

Accurate Measurement of Water in Feedwater Heaters

2002 International Joint Power Generation Conference, 2002
The accurate measurement of liquid levels in power plant operations is key to efficient operation. Although water is a liquid that can be easily measured by numerous measurement technologies, detection in applications like feedwater heaters, for example, takes on a range of complexity that stresses even the most robust devices.
openaire   +1 more source

On Some Performance Parameters for Closed Feedwater Heaters

Journal of Pressure Vessel Technology, 1987
This paper gives a brief synopsis of the thermo-dynamic imperative of the feedwater heater in the power cycle, followed by the development of two performance parameters. These two parameters, the “Flash Protection Index” (FPI) and the “Heater Time Constant,” are closely linked to the heater thermal/hydraulic performance, and can be used to avert ...
openaire   +1 more source

Corrosion of Feedwater Heater Tubing Alloys in Peaking Service

Journal of Engineering for Power, 1965
A pilot-sized heat exchanger, containing a variety of alloy tubes, has been operated under peaking conditions for almost three years in parallel with a feedwater heater in a generating station. This test had three objectives: (1) To produce “exfoliation” scaling on commercial 70-30 copper-nickel tubes such as had occurred in commercial feedwater ...
G. C. Wiedersum, E. A. Tice
openaire   +1 more source

Replacement Feedwater Heater Performance Modeling and Rating Calculations

ASME 2006 Power Conference, 2006
It is not uncommon to expect that feedwater heaters will require replacement over their Unit’s service life. In some cases, Unit upgrades, changes in the full range of operation, and the absence of root cause failure analysis can lead to unsuitable replacements.
Gerald Weber, Michael C. Catapano
openaire   +1 more source