Near the beginning, as Clark sneaks out of his office to change into Superman, he is neither wearing nor holding his hat. In the next shot, as we see him in the hallway, he's wearing his hat.
On the airplane, Lois Lane is wearing a wedding ring.
Superman says that the injured scientist is full of gamma rays; they travel at the speed of light and would leave the body immediately.
Superman is seen having difficulty in the room with the reactor when he is merely changing rod positions, but in a later episode he flies over an actual triggered nuclear blast of a real atomic test and he reverses the blast by just flying over it and waving his arms.
Superman has never been to the nuclear lab before, but knows about the decontamination room where he tells Professor Adams to take the gamma ray exposed scientist, which the Professor should already know to to anyway, and Superman doesn't think to go to the decontamination room himself instead of trying all of the other methods of decontamination.
Scientists as far away as Vienna are searching desperately for a means to decontaminate Superman, but no-one but Superman thinks lightning might work. (Which it wouldn't.)
When the two scientists enter the reactor room there is wind blowing on them from the reactor, but they are able to walk directly to the reactor. When Superman, with his superhuman strength enters the reactor room, he struggles and is blown back against the wall by the same wind that the normal humans were able to walk through with very little struggle.