Generally, building codes are not otherwise retroactive except to correct an imminent hazard.

"None of these things presents an imminent hazard," she said.

Several groups have referred to the imminent hazard they believe clothianidin poses for bees.

Importantly, this point sits atop a formidable reef that is an imminent hazard to navigation.

Once the commission rules that a product is an "imminent hazard," it can be banned or recalled.

"The Hanford tanks present a serious situation, if not an imminent hazard," said the panel.

They also criticized the view, endorsed by the memo's author and officials at the Energy Department, that there was no "imminent hazard".

He did not provide any details, but said that none posed an "imminent hazard" to the students.

"We didn't think legally we had enough ammunition to say the products are an imminent hazard," he said.

Second question: which are the other nuclear stations that represent imminent hazards?