Radiation-Resistant LED Lighting for Hot Cells, Canyons, Caves, Repair and Maintenance Areas at Nuclear Facilities

The equipment is designed to ensure required lighting during mounting, dismantling, maintenance, and operation of process equipment in hot cells, canyons, boxes, repair and maintenance areas at nuclear facilities.

The lighting equipment includes 1 – 4 LED working lights fitted on a bracket and a control unit with the controls on the faceplate.

The lights can be replaced remotely with a power manipulator. There are unique electrical connections inside the bracket for remote switching on/off of the lights that prevent an accidental contact with current-conducting elements. The structure enables regulating the inclination angle of the light optical axis in the range from – 45 degrees (down) to + 15 degrees (up).





 LED Lighting Design


  Replacing LED lights with a power manipulator


The LED lights are resistant to gamma irradiation; the minimum allowable cumulative dose rate is 2·105 Gy.

The equipment allows decontamination with alkali and acid decontaminating solutions within a period of 1 hour at a solution temperature of 70 oС – 90 oС.



Maximum input power   90 W
Power voltage  DC, 33 V
Light flux   12 000 lm
Ripple factor  0 %
Color rendering index  83.95
Type of light intensity distribution curve  D
Supply voltage  230 V
Color temperature  4000 K
Protection mode to GOST 14254−2015, not worse than  IP65
Dimensions (W×H×D)  400×770×250 mm
Maximum weight without bracket   8 kg


The operation mode of the lights is continuous with regular maintenance activities. The climatic category is УХЛ4 to GOST 15150−69.

The lighting equipment complies with Technical Regulations CU TR 004/2011 on the safety of low-voltage equipment and Technical Regulations CU TR 020/2011 on the electromagnetic compatibility of low-voltage lighting equipment (up to 1000 V). The equipment satisfies electrical and fire safety requirements to GOST IEC 60598-1-2017.

The lights were granted Useful Model Patent 183915 by the Federal Service for Intellectual Property.

In 2019, the first batch of the lighting equipment was delivered to the Experimental Demonstration Center  at the Mining and Chemical Combine, Zheleznogorsk, Russia.



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