Lee Windham TXU June 17-20, 2007 Charleston, SC

1. Final Design Authorization Comanche Peak Steam Electric Station Automated Design Change Control System Overview Lee Windham TXU June 17-20, 2007Charleston, SC

2. Why Go Automated Not Just Electronic ? • Direct tie to the corrective action program • Work product quality improvement • Tribal knowledge standard task assumed by the application • Regulatory requirements programmed into the application • Review requirements highlighted to the engineer • Elimination of Duplicated Work • In Engineering • In reviewing organizations • The Desire to Make a Large Leap Forward

3. The FDA Application • IS NOT simply an electronic form • IS NOT a work tracking process • IS an integrated design change application • Document Management System • CADD • Text Design Documents • Vendor Design Drawings (electronic and non electronic) • Work Order System (implementation documents) • Employee Training and Qualification records • IS a semi-automated process

4. Assignment / Qualification • Required Disciplines are determined from Affected Documents and Components listed on the FDA • All Documents at CPSES have been assigned to a discipline • All Components at CPSES have been assigned to a discipline • Additional disciplines can be manually added by the Responsible Engineer • Assignments made by Discipline Design Qualification • Each engineer is qualified by the CPSES training program specifically in one or more disciplines • Assignments are populated to the work tracking system

5. Electronic Form • Electronic Form Captures Scope and Justifications • Work Scope • Design Inputs • Design Details • Testing Requirements • Engineering Basis • Calculation Impact Log • 50.59 Review • Design Verification

6. Automated Reviews • Impact Reviews for Internal and External Organizations are Automatically Determined • 55 Established site programs / organizations that could be affected by a design change • Screening questions identified by the affected program owner • The application queries data entered onto the form and determines the answers to these questions and thus which reviews are required • The specialist for each review either completes the review or is notified that another person is completing the review • Identified Impacts can be tied to various completion status of the design change

7. Electronic Document Mark-Ups • The application creates an electronic version of the drawing or text file for the engineer to mark up • The file is marked-up in the native application and linked to the FDA • New drawings including vendor submittals are entered into the system • Non-Electronically stored documents can be converted to electronic format or have a scanned attachment

8. Electronic Signatures • Signature / Review process totally electronic • When it is time for individuals to sign they are notified via E-Mail • Once an Individual has signed, their ability to edit the document is restricted, If it is opened in edit mode their signature is removed. • When the final approval signature is applied the application updates all the required databases and computer files and restricts all further editing.

9. Automated Document Revision • Document revisions processed automatically when Field Work Orders are complete • The application verifies that the current document revision is the same as the affected revision • if so the next revision is automatically issued (95%) • The Document management system is updated electronically • The new revision of the document is created from the version file electronically with no human intervention • If not the responsible document group is notified (5%) • The revision conflict is resolved • The electronic issue process is restarted • Non-Electronic documents are statused in the appropriate databases

10. Automated Database Updates • The Master Equipment List is updated • Setpoint design document • Pipeline design information • Configuration control references for component modifications • Work Tracking Data updated

11. Mobility • Access available across a secure connection • TXU engineers can access the system from their home computers • Engineering Firms contracted to do work at CPSES can access the system from their home office to issue change documents in our system.