One damaged variant can be found in Cambridge Polymer Labs, in the southwestern-most room (the room immediately left of room C4), on the first floor of the room where the player character first encounters the feral ghouls.

One damaged variant can be found on the reactor level of the Mass Fusion building in the open drawer of a blue console, which is directly in front of the windows to the decontamination airlock.

One in a broken display case on the second floor of Starport Nuka.

One can also be found inside the Fort Hagen hangar underneath the Fort Hagen satellite array, next to some shelved barrels of radioactive material.

May be sold by Becky Fallon in Diamond City.

One in a locker, located in the room with the glowing first mate, south entryway, on the Yangtze.

It can be found immediately upon entry, sitting on a shelf on the right.

One suit can be found in the backyard bunker in West Everett Estates.

One at Hugo's Hole, near Dunwich Borers.

One in the Cambridge polymer labs, sitting on a shelf in section C4.

Two suits can be found on a table in the room before the prototype in the Switchboard (aka Slocum Joe's basement) during the quest Tradecraft.

Two in the reactor level of the Mass Fusion building: one in the locker room, and one on top of a safe in a small office next to the decontamination airlock.

Two hazmat suits can be stolen from the Triggermen at the end of the quest The Big Dig.

Four suits can be found on chem lab workers in Marowski's chem lab above Four Leaf fishpacking plant.

The damaged suit has metal strips patching up the suit's helmet. However, it takes up every armor slot and provides no protection from ballistic or energy damage. While wearing the suit, the Sole Survivor will be nearly immune to all external radiation damage, including gamma guns. The suit provides 1,000 Radiation Resistance and an additional 98% radiation reduction, resulting in it providing more Radiation Resistance than a full suit of power armor.

Fallout 4 radiation overhaul