>>6888181 PB Noteable
Iran nuclear deal: Enriched uranium limit 'breached'
After some digging it appears that the "Heavy water" Heavy water can be used in production reactors, used to produce plutonium from U-238.
WATCH THE WATER?
Nuclear Chief Says Iran Hid Information About Heavy Water Reactor
Iran's nuclear chief Ali Akbar Salehi has disclosed that in spite of pouring concrete in pipes within the core of the heavy water reactor in Arak and making it obsolete as a precondition for the 2015 nuclear deal, Iran procured additional pipes for replacement in case the West reneged on the deal.
Salehi said in a televised interview that was broadcast live on Iran's state TV on January 22, that only he and Iranian Supreme Leader Ayatollah Ali Khamenei knew that there were additional pipes but they did not tell anyone else about it.
https://en.radiofarda.com/a/salehi-says-iran-deceived-west-about-heavy-water-reactor/29730070.html