Integrated head assembly for a nuclear reactor
AssigneeAdvent Engineering Services, Inc.
InventorsRavi Baliga, Key Y. Choi
Life of this patent
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Abstract
An integrated head assembly (100) is disclosed for a nuclear reactor. The preferred integrated head assembly includes a lift assembly (150) that supports the reactor vessel closure head (90) and integrated head assembly for removal, a separate support structure (202) supported by a ring beam (151) that sits atop the reactor vessel closure head, a shroud assembly (200), a seismic support system (300), a baffle assembly (500), a missile shield (400), and a CRDM cooling system. The CRDM cooling system draws cooling air into the baffle assembly, downwardly past the CRDMs (96), outwardly to upright air ducts (600), upwardly to an upper plenum (680), and out of the assembly through the air fans (190).
Claims14
An integrated reactor vessel closure head assembly comprising:
- a vessel closure head having a plurality of lifting lugs and a plurality of control rod drive mechanisms;
- a lift assembly having a plurality of lift rods that extend upwardly from the reactor vessel closure head, each lift rod engaging one of the lifting lugs;
- a support structure attached to the vessel closure head, the support structure having a ring beam disposed atop the reactor vessel closure head, the ring beam having a plurality of saddle members circumferentially spaced around the ring beam, the saddle members having a lower surface shaped to approximately conform to the vessel closure head;
- a shroud assembly encircling the control rod drive mechanisms, the shroud assembly attached to the support structure;
- a baffle structure disposed between the control rod drive mechanisms and the shroud assembly;
- at least one upwardly extending duct having a proximal end comprising an air inlet disposed near the reactor vessel closure head and a distal end comprising an air outlet;
- a seismic support system that engages the control rod drive mechanisms and is attached to the support structure;
- a missile shield attached to the support structure and disposed above the control rod drive mechanisms;
- and
- at least one fan disposed above the missile shield and fluidly connected to the air outlet of the at least one upwardly extending duct.
Dependencies are inferred from the claim text.