# US 2014/0150228 A1 · Machining, examination, and welding integral device for nozzle

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- Number: US 2014/0150228 A1
- Document ID: US20140150228A1
- Status: Published application
- Kind: A1
- Application number: 13/832,871
- Filed: 2013-03-15
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Korea Plant Service & Engineering Co., Ltd.
- Inventors: Hong Seok Cho; Jang Wook Lee; Ki Huyn Cho; Sang Hoon Choi; Min Hwan Mo; Kyong Soon Jang
- Web page: https://patentgrep.com/patent/US20140150228A1

## CPC

- G21C 19/207: {Assembling, maintenance or repair of reactor components (G21C3/334 takes precedence)}
- B23K 26/0093: {combined with mechanical machining or metal-working covered by other subclasses than B23K}
- B23K 37/0276: {for working on or in tubes (B23K37/0211 takes precedence)}
- G21C 17/017: Inspection or maintenance of pipe-lines or tubes in nuclear installations
- G21C 19/14: characterised by their adaptation for use with horizontal channels in the reactor core
- F16L 55/18: Appliances for use in repairing pipes (F16L55/10 takes precedence)
- Y02E 30/30: Nuclear fission reactors
- Y10T 29/5143: and means to machine product
- Y10T 29/5176: including machining means
- Y10T 29/5199: Work on tubes
- G21C: NUCLEAR REACTORS (fusion reactors, hybrid fission-fusion reactors G21B; nuclear explosives G21J)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a machining, examination, and welding integral device for a nozzle, and more particularly, to a machining, examination, and welding integral device for a nozzle in which machining, examination, and welding can be made in the nozzle by one device. To this end, there is provided a machining, examination, and welding integral device for a nozzle including: a pair of caps provided to be separated from each other; a welding unit provided between the pair of caps to weld a junction part of the nozzle and a pipe; a examination unit coupled to one side of the welding unit to check whether the junction part is defective; and a machining unit coupled to the top of the welding unit to remove the surface of a welded portion of the junction part and/or process the welded portion of the junction part.

## Claims

### Claim 1

A machining, examination, and welding integral device for a nozzle, comprising:
a pair of caps provided to be separated from each other;
a welding unit provided between the pair of caps to weld a junction part of the nozzle and a pipe;
a examination unit coupled to one side of the welding unit to examine whether the junction part is defective; and
a machining unit coupled to the top of the welding unit to remove the surface of a welded portion of the junction part and/or process the welded portion of the junction part.

### Claim 2 (depends on 1)

The machining, examination, and welding integral device for a nozzle of claim 1, wherein:
foreign substance preventing layers are provided on surfaces of the pair of caps facing each other.

### Claim 3 (depends on 2)

The machining, examination, and welding integral device for a nozzle of claim 2, wherein:
a support member is provided between the welding unit and the foreign substance preventing layer.

### Claim 4 (depends on 1)

The machining, examination, and welding integral device for a nozzle of claim 1, further comprising:
a control unit controlling the welding unit, the machining unit, and the examination unit.

### Claim 5 (depends on 4)

The machining, examination, and welding integral device for a nozzle of claim 4, wherein:
the control unit includes,
a first control unit connected to the outside to control a machining condition, a welding route, and a welding condition through an embedded program; and
a second control unit connected with the first control unit and provided in the cap, and transmitting signals to the examination unit, the welding unit, and the machining unit.

### Claim 6 (depends on 1)

The machining, examination, and welding integral device for a nozzle of claim 1, wherein:
the welding unit, the machining unit, and the examination unit are rotatable along an inner wall of the nozzle at 360°.

### Claim 7 (depends on 1)

The machining, examination, and welding integral device for a nozzle of claim 1, wherein:
the machining, examination, and welding integral device for a nozzle is inserted into the nozzle by a conveyance positioner installed in a reactor vessel.

### Claim 8 (depends on 7)

The machining, examination, and welding integral device for a nozzle of claim 7, wherein:
the conveyance positioner includes,
a seating part on which the machining, examination, and welding integral device for a nozzle is seat for conveyance;
a vertical guide unit installed on the bottom of the seating part to vertically drive the seating part; and
a rotating plate rotating the seating part.

### Claim 9 (depends on 1)

The machining, examination, and welding integral device for a nozzle of claim 1, wherein:
the junction part is welded by using alloy 52/152 in order to prevent a crack by the PWSCC.