User Assistance Center
- 9am to 5pm M-F
- help@nccs.gov
- (865) 241-6536
The center’s normal support hours are 9 a.m. until 5 p.m. (Eastern time) Monday through Friday, exclusive of holidays. Outside of normal business hours, calls are directed to the ORNL Computer Operations staff. If you require immediate assistance outside of normal business hours, you may contact them at the phone number listed above. If your request is not urgent, you may send an email to help@nccs.gov, where it will be answered by a NCCS User Assistance member the next business day.





