Cvn Nuclear Reactor Boundary Area Parts

End item NSN parts page 1 of 22
Part Number
NSN
NIIN
0.500-13UNC-2AX1.500 IN. Hexagon Head Cap Screw
013349656
000-3001-980 Film Fixed Resistor
004811110
000-90547-060 Tube Repair Plug
002890593
0000453578 Bearing Ball
001006158
000224EB O-ring
006413407
000226EE O-ring
004354726
00044 Plain Encased Seal
008087595
00068-447 O-ring
004219387
001-019 Voltage Sensitive Resistor
010204786
00119-19457 O-ring
001661074
002080 Tapered Roller Bearing Cup
001000295
00213-0571 Annular Ball Bearing
005543913
002389 O-ring
005992934
00290H O-ring
002500221
0030107 Round Plain Nut
001856461
0030107-7 Round Plain Nut
001856461
0032222 Round Plain Nut
001856389
003224EB O-ring
006413407
003224EE O-ring
006413407
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Cvn Nuclear Reactor Boundary Area

Picture of Cvn Nuclear Reactor Boundary Area

In the United States Navy, Refueling and Overhaul (ROH) refers to a lengthy process or procedure performed on nuclear-powered naval ships, which involves replacement of expended nuclear fuel with new fuel and a general maintenance fix-up, renovation, and often modernization of the entire ship. In theory, such a process could simply involve only refueling or only an overhaul, but nuclear refueling is usually combined with an overhaul. An ROH usually takes one to two years for submarines and up to almost three years for an aircraft carrier, performed at a naval shipyard. Time periods between ROHs on a ship have varied historically from about 5–20 years (for submarines) to up to 25 years (for Nimitz-class aircraft carriers). For modern submarines and aircraft carriers, ROHs are typically carried out about midway through their operating lifespan. There are also shorter maintenance fix-ups called availabilities for ships periodically at shipyards. A particularly lengthy refueling, maintenance, and modernization process for a nuclear aircraft carrier can last up to almost three years and be referred to as a Refueling Complex Overhaul (RCOH).

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