9256

Jul 17, 2015, 00:40 AM
MODEL YNPS STEAM GENERATOR. STEAM GENERATOR FILLED WITH LOW DENSITY CONCRETE, WITH SEAL WELDED NOZZLE COVERS, IMPACT LIMITERS, AND SHEAR KEYS. THE STEAM GENERATOR CONSISTS OF THE STEAM GENERATOR SHELL, INTERNAL U-TUBES, AND TUBE SUPPORTS. STEAM GENERATOR IS ESSENTIALLY CYLINDRICAL WITH AN OD OF APPROX. 8 FEET 6-1/4-INCHES IN THE STEAM DRUM REGION AND AN OD OF APPROXIMATELY 7 FEET 1 INCH IN THE TUBE BUNDLE REGION. THE SHELL WALL THICKNESS IS APPROX. 2-3/4-INCHES IN THE TUBE BUNDLE REGION AND 3-1/8-INCHES IN THE STEAM DRUM REGION. LENGTH OF THE STEAM GENERATOR PACKGE IS APPROX. 40 FT. 7-3/8 INCHES. TUBE BUNDLE IS COMPOSED OF 1620 U-TUBES, WHICH HAVE AN OD OF APPROX. 3/4 INCH, AND AN AVERAGE WALL THICKNESS OF 0.072 INCH. THE NOZZLES AND OTHER PENETRATIONS ARE COVERED WITH WELDED CLOSURES. STEAM GENERATOR IS FILLED WITH LOW DENSITY CONCRETE ON BOTH PRIMARY AND SECONDARY SIDES. THREE SHEA R KEYS ARE WELDED TO THE STEAM GENERATOR SHELL BOTTOM FOR AXIAL RESTRAINT. TOROIDAL IMPACT LIMITERS, WHICH ARE POLYURETHANE FOAM WITH A CARBON STEEL SHELL, ARE FIXED AT EACH END OF THE STEAM GENERATOR. STEEL PLATES ARE WLEDED ONTO THE STEAM GENREATOR SHELL FOR RADIATION SHIELDING, AS PLATES ARE WELDEDONTO THE STEAM GENERATOR SHELL FOR RADIATION SHIELDING, AS REQUIRED. MAXIMUM WEIGHT OF THE PACKAGE IS APPROX. 273,000 LBS.
Certificate no:
USA/9256/A
Package Type:
A
Historical Flag:
N
Doe Flag:
N



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