Recreating Chernobyl’s SKALA Display: Questions and Answers
In a recent project by the Chornobyl Family, a faithful replica of the SKALA status display was built for the 40-year memorial exhibition of the Chernobyl disaster. This panel was a critical element of the RBMK reactor control room, providing operators with an at-a-glance overview of the control system's health. Below, we answer common questions about the replica, its construction, and how you can build your own. For details on obtaining plans, see Where to find build plans.
What exactly is the SKALA status display, and why does it matter?
The SKALA status display was one of the original elements in the control room of the Chernobyl Nuclear Power Plant's RBMK reactors. It served as a central visual hub, showing the operational status of the entire SKALA control system at a glance—including its processors and peripheral devices. Originally built using electroluminescent mnemonic panels, the display allowed operators to quickly assess system health without scrolling through individual screens. Over time, the system underwent a modernization in the 1990s, but the original design remains iconic. For those recreating the control room, this panel is essential for authenticity.
Who built the replica, and for what occasion?
The replica was constructed by the Chornobyl Family, a creator collective known for their detailed RBMK control room recreations. It was unveiled at the 40-year memorial exhibition of the Chernobyl Nuclear Power Plant’s Reactor #4 accident. Alongside this display, the team also showcased a full RBMK control panel replica and a SKALA console, both built in earlier projects. The exhibition aimed to honor the past while educating visitors about the plant’s technology. You can see the build process in their recent video.
How does the replica match the original appearance?
The team prioritized visual accuracy, using a metal casing and copious LED lighting to mimic the glow of the original electroluminescent panels. The LED indicators are arranged to mirror the exact layout and colors of the source system. To ensure authenticity, former operators of the Chernobyl reactors reviewed the finished panel and gave it their stamp of approval. The large alarm speaker at the top right is also a faithful reproduction, adding both visual and auditory realism.
What components and materials were used in construction?
Most visible parts were custom-made or sourced to match the original. The metal case was cut from sheet metal and welded. Error indicators—too complex to buy—were 3D printed using files designed specifically for this project. The most labor-intensive part was the lighting: hundreds of addressable LEDs were wired to create the electroluminescent effect. A large speaker (top right) handles the alarm sounds. According to the build video, the wiring alone took many hours due to the volume of addressable LEDs. If you plan a similar build, expect a serious electronics project.
How was the replica verified for accuracy?
Beyond visual comparisons, the Chornobyl Family invited actual Chernobyl control room operators to inspect the panel. Their approval confirmed that the layout, color scheme, indicator behavior, and overall feel matched the original. This human validation is crucial because many old photographs are low resolution or black-and-white. The operators could also confirm details like the sequence of status lights and the exact size of the alarm speaker. Their feedback helped finalize the design before the exhibition.
Where can I find the build plans and instructions?
The full build plans—including 3D printing files, wiring diagrams, and case blueprints—are available through the Chornobyl Family’s Patreon page. By supporting their work, you gain access to step-by-step instructions and component lists. This makes it possible for hobbyists and enthusiasts to construct their own SKALA display. Whether you’re building a full control room or just a miniature replica, these plans are the most comprehensive resource available.
What else did the Chornobyl Family create for the exhibition?
In addition to the SKALA status display, the team also presented a replica of the RBMK reactor control panel and the SKALA console—both built in earlier projects. These pieces together form a near-complete control room setup. The console, which is the operator workstation from which commands are sent, was also meticulously reproduced. Combined with the status display and main control panel, the exhibition offered an immersive glimpse into the environment that operators worked in on April 26, 1986.