Nuclear Testing and Engineering

Unparalleled Excellence in Nuclear Testing and Engineering

Perhaps no other company is richer in nuclear experience, knowledge and dedication than NTS. As members of (and direct participants) in industry task groups, NTS maintains a clear edge in the industry. We are involved in developing standards, guidelines and resolution of key NRC questions about critical characteristics verification, sampling, traceability, surveys and like-for-like replacements.

NTS is the primary supplier of safety-related testing services and equipment, engineering, research and consulting services to utilities and power plant equipment manufacturers throughout the world. We are the nation’s leading safety relief valve re-certification service organization, the premier source of on-site Snubber inspection, testing and repair services and one of the largest suppliers of safety-related spare parts.

Our credentials as a nuclear qualification testing laboratory are simply unmatched. In more than four decades of nuclear testing and qualification experience, NTS has qualified more equipment than any other company in the industry. Our nuclear staff meets ANSI N45.2.6 Level II Inspector requirements, and our nuclear dedication programs are tailored to each application and nuclear safety related product. NTS also provides technical evaluations, critical characteristics and safety class determinations.

Nuclear utilities and suppliers around the world rely on NTS for proactive customer service and a full range of engineered services. Under our NUPIC and NIAC audited 10CFR50 Appendix B and NQA-1 quality program, NTS offers:

  • Safety Relief Valve Testing: ASME Code verification, set pressure, seat leakage and operability and steam/water/air
  • Valve Qualification: QME1, hot and cold cycle testing, flow interruption testing, steam/hot water and modal testing
  • Equipment Qualification Testing: Functional testing, thermal aging, cycle aging, seismic event simulation and accident (LOCA) simulation
  • Third-party Qualification/Commercial Grade Dedication: Dedicated parts inventory
  • Custom Fluid Components Testing: Heat exchangers, pumps, strainers/debris and jet impingement
  • Equipment Qualification Services: Failure analysis, thermal and radiation analysis, and qualification plan development
  • Snubber Testing: Snubber removal and re-installation, visual inspection, on-site and in-house functional testing, plus on-site and in-hour repair
  • Strain Gage Installation: Strain gage electrical preparation and strain gage installation to monitor vibration for power-up rate activities

Extremely Qualified: Huntsville, AL Nuclear Center of Excellence

In square footage, capabilities, testing equipment and proven skills and sheer experience, the NTS Nuclear Center of Excellence is tough to beat. In accordance with 10 CFR 50 Appendix B and ANSI N45.2 under our NUPIC-, NIAC- and NRC-audited quality program, the following services are available at our 220,000 square-foot facility:

  • Field services testing
  • Equipment qualification
  • Commercial grade dedication
  • Engineering
  • Component supply
  • Field services

Qualification, Test and Outage Equipment Includes:

  • Four Seismic Simulators
  • Six Accident Test Autoclaves
  • One 150 psi, 3,000 lbs. per hour boiler
  • 300KW  Steam Super Heater System
  • One Boron Chemical Spray Injection System
  • Five EMI Test Rooms
  • Eight Wyle-Designed Small Bore Snubber Test Machines
  • Three Large Bore Snubber Test Machines
  • Nine Mobile Field Snubber Trailers
  • Eight Strain Gage Welding Machines
  • One Mobile Field Strain Gage Trailer

Safety Relief Valve Testing Equipment Includes:

  • Three Safety Relief Valve Test Cells for Steam, Water and Air
  • Full Flow Steam Test System to 2,000,000 lbs. per Hour Max and 1400 PSI Max
  • Full Flow Hot Water Test System 2200 PSI
  • Hot Water Closed Loop Flow System 30,000 Gallons
  • Cold Water Closed Flow Loop System 60,000 Gallons
  • Two 3,000 PSI, 6,000 lb. per Hour Boilers
  • One 1,500 PSI, 12,000 lb. per Hour Boiler

NTS a Utilities Services Alliance (USA) Supplier-Partner Member:

The Utilities Services Alliance (USA), is a not-for-profit cooperative designed to facilitate business and economic benefits to independent nuclear utility providers. The USA Supplier-Partner Membership connects NTS to a unique community of independent utility providers dedicated to delivering world-class products and services at an outstanding value to their customers. USA members receive best-in-class pricing and service models normally only available to large fleet utility operators.

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