A wedge-shaped pit on the outer side of the outer cladding (a) and intergranular corrosion with grain chipping on the inner side of the inner cladding (b) of irradiated fuel element 33 with U-Mo fuel (in a section of 400 mm from the bottom of the fuel element) after storage for 45–55 years.

 
 
  Part of: Ivanov SN, Porollo SI, Shulepin SV, Baranaev YuD, Timofeev VF, Kharizomenov YuV (2023) Examination of fuel elements irradiated in the reactor of the World’s First NPP after long-term storage. Nuclear Energy and Technology 9(1): 51-58. https://doi.org/10.3897/nucet.9.102492