NDT Simulator and Hands-On Practical Training in Green Bay

Green Bay sits at the mouth of the Fox River, at the northern end of what Wisconsin calls the Paper Valley. Along the lower Fox, from Green Bay down toward Appleton and Oshkosh, pulp, paper, tissue and packaging mills have operated since the nineteenth century, and Wisconsin has more paper mills than any other state. A paper mill is, from an inspector's point of view, a plant full of pressure equipment: steam-heated dryer cans and Yankee dryers, digesters, recovery and power boilers, heat exchangers, process piping and tanks. Just up and across the bay, Great Lakes shipyards in Marinette and Sturgeon Bay build naval and commercial vessels, and Green Bay itself hosts fabrication for them. Atlantis built the first-ever online practical NDT simulation portal for practice and hands-on experience, and Practical NDT is that portal: an immersive, 3D, game-like environment where a technician logs in from a browser or app and works realistic inspection jobs with instant scored feedback. It serves every skill level, from a new trainee to a Level III building scenario sets for a crew. If you are looking for an NDT simulator in Green Bay, NDT practice between mill outages, or hands-on NDT training in northeast Wisconsin, this page explains how the platform fits the region's work.

Why Hands-On NDT Practice Matters in Green Bay's Paper Mill and Shipbuilding Sectors

Paper mill inspection is outage-driven. Mills run around the clock for months, then shut down for a short, intense maintenance window in which boilers, dryers, digesters and piping all need to be inspected, repaired and cleared to restart. During that window, inspection crews have little room for hesitation. A technician doing ultrasonic thickness readings on a dryer can, or running an internal rotary scan down a boiler tube bundle, has to know what the data should look like before they start, because there is no time to learn it during the shutdown. The trouble is that between outages many of those same technicians spend weeks on routine work, and the rarer findings they will be expected to recognise, such as localised thinning, pitting under deposits, cracking at attachment welds or tube wall loss near baffles, may not have appeared in front of them for a year.

Shipbuilding has the opposite rhythm but the same underlying problem. Hull and structural welds are produced continuously, and weld inspectors must interpret UT, PAUT and sometimes TOFD data quickly and consistently across shifts. New inspectors join yards regularly, and experienced Level IIs have limited time to mentor them. Physical flawed weld specimens are expensive and scarce, and a shared lab can only hold so many people at once. Practical NDT gives both workforces somewhere to rehearse: mill crews can run corrosion and tube jobs before the outage starts, and shipyard inspectors can practise weld interpretation on demand. Practising in a virtual plant also means no confined-space entry, no work inside a hot vessel and no radiation exposure while learning.

Mapping Green Bay Work to the Five Practical NDT Environments

Practical NDT is built around five workplace environments. For Green Bay, the mapping is unusually clear. The Oil & Gas Site environment, with 73 jobs, is set in a process plant, and its weld, corrosion, tube and screening jobs are the closest match to paper mill work: IRIS on heat-exchanger and boiler tubes, UT thickness and corrosion mapping on vessels and piping, PMI alloy verification on replacement components, and guided-wave screening on long pipe runs. The process-plant context differs from a mill, but the inspection tasks carry over directly. The Welding Workshop, with 52 jobs on weld coupons and fabrication joints, is the natural home for shipyard and structural fabrication practice, and for mill repair welds that must be cleared before restart. The Storage Tank environment, with UT shell thickness surveys and MFL floor screening on a full-size tank, fits the chemical, water and liquid storage found at mills and along the port. The NDT Lab, with 52 jobs on bench specimens and reference blocks, is where new trainees learn calibration and fundamentals. The Aircraft Hangar, with 54 jobs, is available for technicians who want eddy current and airframe experience. A Green Bay mill inspection contractor would typically start with the Oil & Gas Site plus Storage Tank; a shipyard or fabrication shop would start with the Welding Workshop and NDT Lab.

Methods You Can Practice: IRIS, Ultrasonic Testing Simulator, Phased Array and More

Practical NDT covers 12 methods. The surface methods are PT, MT and VT, which are the everyday tools for checking repair welds, dryer attachment welds and hull structure for surface-breaking cracks. The volumetric methods are UT contact, PAUT, TOFD and RT. The ultrasonic testing simulator lets a technician scan a part with a virtual transducer, read the A-scan and relate echoes to geometry, whether that is a wall-thickness reading on a corroded vessel or a shear-wave indication on a butt weld. The phased array simulator adds sectorial and linear scans for weld volumes and corrosion mapping, which is how many shipyard welds and mill vessels are now inspected. TOFD supports through-wall sizing on thicker welds. The electromagnetic methods are ET and MFL; eddy current is valuable for non-ferrous tubing and surface cracks, while MFL is the standard way to screen tank floors. The specialist techniques are where Green Bay's mill work really benefits: IRIS internal rotary UT for heat-exchanger and boiler tubes, which gives a full circumferential picture of wall loss; LRUT guided-wave screening for long piping runs and racks; and PMI for alloy verification, which matters whenever stainless or alloy components are replaced during a shutdown. The 33 guided lessons introduce each method before users move on to scored jobs.

Built for Every Skill Level

A Green Bay inspection team usually contains a mix of people, and Practical NDT serves each of them differently. New trainees get guided fundamentals: calibration on reference blocks, setting range and gain, understanding what a back-wall echo tells you, applying magnetic particle in two directions, and interpreting a penetrant indication. Each job is scored immediately, so the trainee knows what they missed and why. Working technicians use the platform for rare-defect refreshers between assignments. The technician who will run IRIS on a recovery boiler bundle in the spring outage can rehearse tube-wall-loss patterns in the weeks before, and a shipyard UT inspector can revisit lack of sidewall fusion or root cracking after a stretch of routine clears. Level IIIs and team leads get tools to build and assign scenario sets, benchmark crews objectively against the same jobs, and find coverage gaps before an outage rather than during one. The scenario library was designed by Anoop Rayavarapu, ASNT NDT Level III and founder of Atlantis NDT, who leads Atlantis training, so the jobs are grounded in how inspections are actually set up, performed and reported.

NDT Practical Exam Preparation: How It Complements Formal ASNT Training

Practical NDT is a practice and readiness tool, and it is important to say plainly what it does not do. It does not certify anyone. It does not replace the practical examination on real specimens that ASNT SNT-TC-1A and your employer's written practice require. Under SNT-TC-1A, the employer certifies its technicians based on documented training, documented experience, and written, specific and practical examinations, with the practical exam performed hands-on with real equipment and real test pieces. No simulator can substitute for that, and Atlantis does not position Practical NDT as one. What the platform does is give a candidate far more repetition before that exam than a shared lab ever could, so they arrive knowing how a scan should look and how a real indication differs from geometry or noise. It also gives certified technicians a way to stay sharp between jobs. That is why Practical NDT sits alongside Atlantis's formal NDT training and certification programs: the course and the real specimen teach and test; the simulator builds the practice hours in between. Some northeast Wisconsin employers, especially those supplying naval or specialised programs, may also work to additional customer or industry qualification requirements; those remain governed by the relevant specification and employer, and Practical NDT is simply a way to prepare for them.

Green Bay's Industrial Geography: The Paper Valley, the Bay Shipyards and Point Beach

The lower Fox River has one of the densest concentrations of pulp and paper mills in the United States, running from Green Bay upstream through De Pere, Kaukauna, Appleton, Neenah and Menasha toward Oshkosh. Tissue, packaging, containerboard and specialty paper are all made in the corridor, and recycled-fibre mills have been built in the region in recent years. That concentration sustains a local ecosystem of mechanical contractors, boiler repair firms and inspection providers who move from mill to mill as outages are scheduled. Across the water, the Great Lakes shipyards at Marinette and Sturgeon Bay, both within about an hour of Green Bay, build and repair naval and commercial vessels, with fabrication work also carried out in Green Bay itself. That shipbuilding activity creates demand for weld inspectors trained in UT and PAUT. Southeast along the Lake Michigan shore, the Point Beach nuclear plant near Two Rivers adds power-generation inspection work to the regional mix, and the Port of Green Bay handles bulk commodities such as coal, cement, salt and petroleum products. On the regulatory side, Wisconsin is an NRC Agreement State, and the Wisconsin Department of Health Services Radiation Protection Section licenses users of radioactive materials, including industrial radiography. Real RT in the Green Bay area is performed under that program and under each employer's radiation safety procedures; Practical NDT only lets trainees rehearse technique and interpretation decisions virtually, with no exposure. Facilities and sectors named here are regional context only and are not Atlantis customers or partners.

Outage Readiness: Using Practice Time Before the Shutdown

The most practical way a Green Bay mill contractor can use Practical NDT is as outage preparation. Four to six weeks before a scheduled shutdown, a Level III can assign a scenario set that mirrors the planned scope: IRIS on exchanger bundles, UT thickness surveys on vessels and piping, MT on repair welds, PMI on replacement components. Technicians work through it on their own schedules, the scored results show who is ready for which task, and the lead can adjust crew assignments before anyone is inside a vessel. After the outage, the same scenario sets become onboarding material for new hires. Shipyard supervisors can do the equivalent with weld interpretation sets ahead of a new hull block or a change in joint design.

Bringing Practical NDT to Your Green Bay Team

Atlantis built the first-ever online practical NDT simulation portal for practice and hands-on experience, and bringing it to a Green Bay team starts with a conversation about your work. Request a Practical NDT demo for Green Bay and we will walk through the environments and methods that match your scope, whether that is mill outages, shipyard welding or both. A typical rollout begins with a Level III and a small group of technicians trying the most relevant jobs, then building a first scenario set and reviewing the scored results together. Once the team is comfortable, access extends to the wider crew: newer trainees on guided lessons and fundamentals, experienced technicians on refreshers and outage preparation. Everything runs in a browser or app, so there is nothing to install and no specimens to transport between sites. Practical NDT is affordable, accessible and fully customizable, and pricing is quote on request. To discuss options first, ask for a quote or write to info@atlantisndt.com.

Frequently Asked Questions

Does Practical NDT replace the practical certification exam?

No. It is a practice and readiness tool only. ASNT SNT-TC-1A and your employer's written practice require a practical exam on real specimens with real equipment, and the employer grants certification. Practical NDT helps technicians prepare; it does not certify them.

What experience level is it for?

Every level. New trainees follow 33 guided lessons and fundamentals jobs, working technicians use it for rare-defect refreshers between assignments, and Level IIIs build and assign scenario sets, benchmark crews and find coverage gaps.

Can it help with paper mill boiler and heat-exchanger inspection?

Yes, as practice. The Oil & Gas Site environment includes tube, corrosion and weld jobs, and the platform covers IRIS internal rotary UT for heat-exchanger and boiler tubes, UT thickness surveys, PMI and guided-wave screening. The setting is a process plant rather than a mill, but the inspection skills transfer directly.

Is it useful for shipyard weld inspectors near Green Bay?

Yes. The Welding Workshop environment has 52 jobs on weld coupons and fabrication joints, with UT, PAUT and TOFD available for volumetric weld interpretation practice. Your yard's procedures and acceptance criteria still govern real welds. Ask for a shipyard-focused demo.

Is this hands-on NDT training available online across Wisconsin?

Yes. Practical NDT is an online platform, so teams anywhere in Wisconsin can use it, from the Fox Valley to Milwaukee and the Lake Superior shore. For formal classroom training and certification support, see Atlantis NDT training.

Explore more: Practical NDT overview, NDT training and certification, consulting services, Atlantis ERP, Digital Twins, request a demo.