Nuclear Industry

Do you need a reliable vendor that understands the Nuclear culture, the urgency of getting things done safely, the right way, the first time? If the answer is yes, you are in good hands. Vo-Tech’s skilled team has served the needs of the power generation industry for over 20 years. Our experience has given us tremendous insight into solving problems and saving money for our customers. We efficiently find the best solutions – extremely valuable during the critical path activities, when your time is of essence.


Ask us about our MSIV Modification System, EDG FlyWheel Modification, and Shop Upgrades!

Download Vo-Tech's MSIV Tool Success Story

Our customer says:

“I can always depend on Vo-Tech to support my machining needs whether on site with machinists or at your facility with machining services. Vo-Tech also provides excellent product and service quality and we know we can rely on them for technical support as well as on time delivery. I would recommend this company to anyone who needs machining services.”

–  Project Sponsor at Duke Energy

Capabilities For All Your Needs

Field Machining + Onsite Shop Machining

Mechanical Design

Robotic Welding

Engineering + Reverse Engineering

Design + Fabrication of Custom Tools & Machines

3D Scanning + Data Processing

Shop Upgrades

InteractiveProcedures™

Wide Range of Critical Services

Field Services

Valve Machining

Pump Machining

Flange Machining

Stud Removal

Laser Scanning

Motor / Pump Base Machining

EDG Flywheel Mod

Field Support

Machining

Engineering

Roboting Welding

Consulting

Training

Project Management

Nuclear Products

Featured Machines and Tools

MSIV Modular Boring Bar System

This innovative device was developed specifically to automate the MSIV refurbishment / rebuilding process. Reduce your setup and total repair time with the MSIV Repair Tool. Our fully automated Main Steam Isolation Valve (MSIV) Repair Tool is the only system that has interchangeable process heads. The GoldTrack VI™ power supply and advanced FireView™ control technology provides co-ordinated motion while inspecting, welding, machining, milling, and grinding the repair area. This unique system is capable of performing all tasks necessary to refurbish a MSIV in a single setup. A common cage and plug assembly secures the robust boring bar for the tool post to travel axially. Once installed and aligned, the MSIV Repair Tool remains in a fixed position until the repair process is completed. The Fireview™ Control Console provides programming flexibility by allowing multiple screen configurations, specifically designed for each MSIV repair operation. Fully remote operation up to 50’ away reduces exposure and repair time! 

The MSIV Repair Tool incorporates five different operations: 

  • Laser CMM Inspection Head provides complete mapping and data acquisition of entire valve.
  • Milling Head Attachment – spot milling/repairs
  • Automatic Welding Head Attachment – GTAW Cladding
  • Single Point Machining – Dual attachments for line boring, flange and seat machining
  • Lapping – to obtained desired micro finish on valve seat

ABBS Automated Boring Bar System

This innovative device was developed specifically to automate the F-032 valves refurbishment / rebuilding process, also reduces exposure and repair time. 

This system performs the following three functions in one setup.  

  • Laser CMM Inspection Head provides complete mapping and data acquisition of entire valve. 
  • Single Point Machining Heads - Dual attachments for line boring, flange and seat machining 
  • Lapping  Head – to obtained desired micro finish on valve seat

EDG Flywheel Modification

The Governor Upgrade of the Emergency Diesel Generator involves machining of the Engine Flywheel. This modification requires the drilling of 360 equally spaced holes on the circumference of the flywheel.  

Vo-Tech has designed a custom precision fixture that ensures that the drilled holes will be in the specified locations. This modification has been performed in several Nuclear plants in USA with a 100% success rate.

Portable CNC MachineCompact Design Horizontal Boring Mill

  • Design custom scalable to virtually any size requirement 
  • Precision ground lead screw with zero backlash 
  • Precision Linear Guides and Roller Bearings (heavy duty) 
  • Existing design very rigid that can easily handle 2,000 lbs. table load 
  • Travel capability: 28” in X axis, 32” in Y axis, 12” in Z axis (on 36” X 36” table) 
  • User friendly Windows based Mach Motion CNC Controls with built in CAM feature & optional 4th axis capable 
  • Touch Screen Monitor with custom views and tool path features 
  • Jog handle control with track ball and keyboard inputs 
  • 6.6 HP Spindle with speeds up to 3,000/1,500 RPM’s with torque at 111/222 inch lbs. (depending on desired configuration) 
  • Common CAT 40 tool holder (unique for a horizontal mill) 
  • Small footprint of only 85” in length (Z) X 79” long (X)(L shaped design) and only 73” tall overall 
  • 4,500 lb. machine that is easily disassembled and transportable

Stud Hole Cleaning Machine

This machine is designed to clean the threaded holes located on the Reactor Vessel Head Flange. During the maintenance outage this machine is used to remove the dry anticize residue build up after reactor ran cycles.   
Build-in vacuum system attachment reduces contamination caused by loose debris.  
 
This rotating wire brush head design provides constant contact of the bristle with the thread. 

Flange Machine

This machine is designed for various machining applications on pipes and flanges with options of internal or external mounting. Max. machining capacity is 36″. Hydraulic power unit is required to operate this machine. 

 

From the user manual: 

The Flange Machine Model FM36 is a portable field machine used for resurfacing pipe, flanges, nozzles, valves, and additional piping components. This dual mounting machine has been designed for face cutting of both internal and external diameters and is also capable of bevel cutting when used with optional attachments. Machining capacity for all pipes will range between 8 and 36 inches in diameter 

 

General Information 

Description  Capability 
ID Mounting  8” min – 24” max 
OD Mounting  16″ min – 36″ max 
ID Boring  8″ min – 36″ max – 6″ deep 
OD Turning  12″ min – 36″ max – 6″ deep 
Face Turning:    8″ min – 40″ max 
Machine Functions  Face, Bore, Turn, Groove, Taper and Bevel  
Machinable Materials  All materials 
Tool RPM  0 – 30 rpm 
Axial Feed Rate  0.062 per revolution 
Feed Table  Two (2) possible 
Tooling  Any 0.5 to 1 inch square tool bit 
Drive  Hydraulic or air motor 
Air Requirements  100 cfm @ 95 psi 
Hydraulic Requirements  14 gpm @ 1500 psi 
Minimum Clearance  36 inch 
Weight  300 pounds 
Dimensions  40 inch width, 22 inch length, 22 inch high 
Controls  ON / Off, direction control and speed control 
Finish  Anodized, chrome and black oxide 

 

Lifting Trolley System

The Trolley Lifting System is a special-purpose lifting device that is permanently installed into the pump driver mount. It is used to move the seal cartridge into the pump driver mount, position the seal cartridge over the pump shaft, and install the seal cartridge by lowering it over the pump shaft and into the pump stuffing box. It also accomplishes the analogous steps associated with removal of a seal cartridge from a pump: remove the coupling spacer, pump hub, seal leakage cover, adaptor ring, and bearing assembly. The Trolley Lifting System contains two electric hoists that are required to operate separate or simultaneously during component lifting. 

The Trolley Lifting System has been designed, manufactured and tested by Vo-Tech Inc. in accordance with ASME NUM-1-2009.  

System parameters: 

  • Maximum rated load 630 pounds.  
  • Horizontal range of motion is 44 inches 
  • Vertical range of motion is 27 inches 
  • Operating temperature 32°F to 104°F 

Effect of radiation on the control box is not addressed. 

Nutrunner – Pneumatic

This pneumatic tool is used on dome studs during Reactor Head disassembly. After detention of studs, this tool is used to remove and capture bottom nut and washer, where accessibility to do this manually is difficult and not safe. Use in conjunction with our Stud Lifting Tool to lift studs once nuts have been removed to locking position.  

This tool saves time and exposure. 

Use in conjunction with our Stud Lifting Tool to lift studs once nuts have been removed to locking position. 

Nutrunner – Electric

This electric tool is used on dome studs during Reactor Head disassembly.  After detention of studs, this tool is used to remove and capture bottom nut and washer where accessibility to do this manually is difficult and not safe. This tool saves time and exposure. 

Use in conjunction with our Stud Lifting Tool to lift studs once nuts have been removed to locking position. 

RVHS Nut Runner

This electric tool is designed to speed up the removal and installation of Reactor Vessel Head Stud Nuts.  Additionally, this tool saves time and reduces employee exposure. 

Stud Lifting Wrench

During the Reactor Head disassembly, it is required that the Reactor Dome Studs will be lifted and lock in certain position to create a floor clearance for the dome staging. This tool was designed to lift the Reactor Dome Studs into locking position. It’s safer to use the tool than to lift the studs manually by hand. 

Motor Coupling Alignment Tool

This tool is used for precise and accurate alignment of vertical pump & motor couplings. This tool is designed to eliminate the necessity of rotating heavy motor couplings and simplifies the alignment process. The tool is built with precision ball bearings that allow the tool to rotate and take indicator measurements.  Vo-Tech Coupling Alignment Tool it’s safer and easier to align the vertical pump & motor couplings. 

EDG Crank Shaft Measuring Tool

Designed to fit into the cavity of an assembled engine in place of the bearing halves and measures ID & OD surfaces of crankshaft and bearing housing to spec. a replacement bearing. Eliminates the need of entire disassembly 

Scalable to measure shafts 12” to over 30” in diameter 

Measurement accuracy to within +/-.0005 to 1-degree increments across 5” in width (also scalable to wider dimensions) 

Working 14” model has 8 ID and 8 OD probes 

Collected data downloadable to PC w/proprietary software 

EDG Training Mockup

This Mockup is designed to train nuclear workers on critical steps required to maintenance the Emergency Diesel Generator. 

MSIV Training Mockup

MSIV LRT Plug

This Plug was design to isolate MSIV loop during LRT testing. It is easier to insert this plug, than assemble the valve. Saves time and radiation exposure. 

Accumulator Cart

Designed for BNP to install, remove, and transport accumulators in very tight areas. 

CRB Handling Tool

This tool was designed to allow nuclear workers to hook CRBS from the curb hanger, with the crane, and move them in the spent fuel pool. 

Terry Turbine Motor Testing Table

This custom table was designed and built to provide support, stability and safety during the Terry Turbine overspeed testing. Ensures that good test results were obtain. 

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