9244

Jul 17, 2015, 00:40 AM
A STEAM GENERATOR SUBASSEMBLY FILLED WITH LOW DENSITY CONCRETE. THE STEAM GENERATOR SUBASSEMBLY CONSISTS OF THE STEAM GENERATOR SHELL, TUBE BUNDLE, AND PRIMARY CHANNEL HEAD. THE STEAM GENERATOR SUBASSEMBLY IS ESSENTIALLY CYLINDRICAL WITH AN OD OF 13' 9" ALONG THE TUBE BUNDLE REGION AND A MAXIMUM OD OF 16' 8-3/4" AT THE TRANSITION REGION. THE VESSEL WALLS ARE CONSTRUCTED OF A516 AND A533 CARBON STEEL. THE WALL THICKNESS VARIES FROM 4-3/8 IN THE SIDE WALL, AND 5-5/8" IN THE TRANSITION REGION, TO 7" IN THE CHANNEL HEAD. THE TUBE BUNDLE IS COMPOSED OF 8519 SQUARE-BEND TUBES, WHICH HAVE AN APPROXIMATE OD OF 0.75" AND WALL THICKNESS OF 0.048", AND WHICH ARE POSITIONED IN A 21" THICK TUBE SUPPORT PLATE. THE TOP OF THE STEAM GENERATOR SUBASSEMBLY IS CLOSED BY WAY OF A STEEL "TOP HAT" ASSEMBLY, WHICH IS WELDED TO THE STEAM GENERATOR SHELL. THE LENGTH OF THE STEAM GENERATOR SUBASSEMBLY PACKA GE IS APPROXIMATELY 41' 11-1/2". NOZZELS AND OTHER PENETRATIONS ARE COVERED WITH WELDED CLOSURES. THE STEAM GENERATOR SUBASSEMBLY IS FILLED WITH LOW DENSITY CONCRETE ON BOTH PRIMARY AND SECONDARY SIDES. THE WEIGHT OF THE PACKAGE IS APPROXIMATELY 420 TONS. MODEL MILLSTONE UNIT 2 STEAM GENERATOR SUBASSEMBLY.
Certificate no:
USA/9244/A
Package Type:
A
Historical Flag:
N
Doe Flag:
N



Office of Environmental Management

1000 Independence Ave. SW
Washington DC 20585
202-586-7709

Federal Government