PRESS RELEASE

American Efficiency Services, LLC
9025 Chevrolet Drive, Suite F
Ellicott City, Maryland 21042

Contact: Wally Scherer
Telephone: 877-816-9081
Fax: 443-774-9206
E-mail: information@AmericanEfficiency.com

American Efficiency Services Assists AEP – D.C. Cook Nuclear Station in Identifying Small Condenser Tube Leak

June 2007 – American Efficiency Services, LLC (AES), the world’s leading leak detection company, continues to help its customers become more efficient and save money, as demonstrated by the recent successful jobs for AEP – D.C. Cook Nuclear Station.

Unit 2 was experiencing increased concentration of sodium in the steam generator of 0.87 ppb over a two year period but there was no recordable contamination in the hotwell condensate. Since a reduction in power would need to be experienced in order to identify the source of leakage effectiveness of the inspection was paramount due to the short window of opportunity. AES personnel recommend a tube cleaning of the suspected tube bundle since plant personnel were concerned with ID tube fouling sealing off the small size leak. Plant personnel agreed that this would enhance the ability to identify the source of leakage.

Approximately 7,444 tubes were cleaned and inspected within the designated time frame with the source of leakage being identified and plugged. Once the tube bundle was returned to service and the unit reestablishing full load status the hotwell condensate contamination levels returned to normal operating levels (0.48 ppb).

About American Efficiency Services
Headquartered in Ellicott City, Maryland, American Efficiency Services’ (AES) mission is to work for the success of the Power and other industries served by providing customers with efficient, responsive and reliable inspection services that best satisfy their needs. AES works to provide customers with a competitive advantage by providing consulting services, comprehensive system testing and full reporting. All inspections are backed by a money-back guarantee. Additional information on helium leak detection services can be obtained at www.AmericanEfficiency.com or by calling 877-816-9081.