General Lab Information


Thermoluminescent Dosimeters (TLDs)

TLDs are the primary method of monitoring personnel radiation exposure. They are issued in one of three colors.

RED - Issued to visitors and employees without training. Individuals wearing this badge must be escorted.

BLUE and YELLOW - Permanent TLDs issued to staff trained in C-A Access and Rad Worker I. TLDs can also be issued with General Employee Radiological Training (GERT) only with limited access. Badge color is dependent on the month (even vs. odd-numbered months).

Lost your TLD badge?

Temporary badges are issued to trained staff that may have misplaced their permanent badge or who have not yet completed all required training.

For New Hires who need a Permanent TLD

Required training includes C-A Access training and Rad Worker I. If Rad Worker I cannot be completed before the desired date the individual can take GERT and be escorted, but limited to areas not requiring Rad Worker I Training. Permanent TLD service can also be processed so the individual can get permanent service sooner, but they must still take CA Access Training and Rad Worker I.

During Limited Operations
For staff requesting permanent TLD service, please contact Ken Boland or any Health Physics (HP) Tech. New TLDs will reside in the HP Tech area. Sstaff will be directed to place their permanent TLD on their assigned board before leaving work every day.

During Regular Operations
All new or transferred TLDs will be provided by the Training Office, Rm. A-128. Staff will be told where TLDs should be placed at the end of each work day.

TLD Exchange Weekend

TLD exchange is usually done the first weekend of every month unless there is a holiday. If a TLD is not placed on its assigned board in its assigned slot number, Health Physics staff will not place the new monthly TLD on the board. Instead, it will be placed on a separate, temporary board next to or on the floor under the regular wall-mounted board. The temporary board will be available for one to two days after which is will be transferred either to the hallway floor next to the Training Office in Rm. A-128 or placed on the white board outside of the office. Locate the TLD you're looking for and replace it with the TLD that needs to be turned in for the month.

Misplaced a Permanent TLD?

Contact the C-AD Training Group, Ken Boland, or any of the HP Techs.

Returning a Red Visitor TLD or Temporary TLD

RED Visitor TLDs are normally used for one day. When the TLD is no longer needed the visitor or BNL escort should place the TLD in the yellow box on the wall outside of Training Office in Rm. A-128.

RHIC Access

Access Cards

Blue RHIC Access Cards

Contact the C-AD Training Group to request RHIC access card. Please note any special areas you will need access to and communicate this to the C-AD Training Group/Access Controls Group who will add it to your existing access list. The access card will be issued by Access Controls, Ext.7733, in Bldg. 911A, Rm 142.

Rad Worker I and CA Access Training is required. For Users that wish to access RHIC tunnels, GERT and Collider User Training may be sufficient. Please contact the Training Coordinator.

Pink RHIC Access Cards

PINK RHIC cards are usually for Experimental Users or for site employees who work in the same area as Users. Collider User Training and GERT are required. This applies to individuals who may need a BLUE RHIC card at times. STAR Users will also need to take STAR Low Hazard Trainer Trained Training and/or if they are going to be shift leaders.

Self-Reading Dosimeter (SRD)

During Limited Operations, anyone who needs an SRD should see Ken Boland or any HP Tech. If keeping the dosimeter long term, the SRD should be returned to Ken Boland or HP Techs in C-AD when they are due for calibration or if they are not working. Health Physics will then issue a new onw.

During Normal Operations, contact the C-AD Training Group who will issue SRDs as needed. Any SRDs that are due for calibration or are not working correctly should be returned to the Training Office, Room A-128, to be replaced with a new one (based on availability).

Oxygen Deficiency Hazard (ODH) Monitors

During Limited Operations: If an ODH monitor is needed, see Tony Curcio. If the Training Office (Room A-128) is open there is a sign out book on the file cabinet with ODH monitors next to it. Staff are requested to sign out the monitor they are taking by entering their life number, name, serial number of the monitor and calibration due date. Monitors that are out of calibration or not working should be returned to Tony Curcio or the Training Office.

Escape Packs

Contact Tracy Blydenburgh, Bldg. 911A , Rm. A-110 for details.