Firefighters remain on the scene on Forties Road, at the Baldovie Industrial Estate, more than 16 hours after a huge blaze broke out at the site.
The fire-hit unit is believed to have once been owned by Wood Group.
Six fire and rescue appliances were sent to tackle the flames at about 8.15pm on Sunday.
The blaze sent a huge plume of smoke across Dundee, with locals told to seal their windows shut.
Police were also called to the scene.
Five fire and rescue vehicles, including a height appliance, were initially called to the incident. The service’s response was scaled back at about 1am.
A fire and rescue spokesman said: “We were alerted at 8.14pm on Sunday, June 7 to reports of a fire within an industrial estate at Forties Road in Dundee.
“At its height operations control mobilised six appliances to the scene, where firefighters worked overnight to fight the fire.
“Crews remain on scene this morning working to extinguish the fire, with two fire appliances and a height appliance still in attendance.