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Seaward Divers Complete Final Stop-Log Seal Plate Replacement at Surry Power Station

Posted March 28, 2014
Written by Cecil C. Achord

Seaward Marine Services completed ongoing intake improvements to the Dominion Power Surry Power Station culminating in all eight intake structures to receive new stop-log seal plate assemblies.  For each intake structure over 18 mechanics and divers along with Dominion Power employees and supplemental staff in support participated in the removal of the old seal plate and trash-rack retaining channel.  The removal and replacement required 13 shifts totaling over 2800 man-hours to complete this process.

Seaward divers installed the new seal plate assembly by core drilling and installing approved inserts with underwater adhesive compound.  Divers then completed a foreign materials sweep by cleaning the trash racks and vacuuming away all debris from the intake structures.  With support of Seaward Marine personnel, Dominion employees then lowered the intake structure stop-logs into the new stop-log guides to ensure proper fit and a positive seal.


New seal plate assembly installation 



Diver checking fit of seal plate assembly 



Divers preparing to enter water start core drilling operations

 
 

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