Advanced Photon Source

An Office of Science National User Facility

Experiment Hazard Class 1 – APS Baseline


All beamline experiments conducted at the APS qualify for the Class 1 designation. The designation addresses hazards inherent to the facility, hazards to which every experimenter working at the APS may be exposed. This hazard class includes the incidental use of small quantities of common cleaning solvents solvents (e.g., acetone, methanol, ethanol). The associated hazard control set is required for every experimenter performing hands-on work at the APS.

Experiment Category

Experiments involving only this hazard class are considered low risk.

Experiment Hazard Control Verification Statements

The hazard controls listed below must be incorporated into the experiment safety plan for each experiment conducted at the APS.

Engineered Controls – None beyond those already incorporated into the APS

Procedural Controls – Although there are no formal procedural controls required, procedures covering securing experiment enclosures and routine use of cryogens at the APS are covered in the sector orientation. Incidental use of common cleaning solvents is to be implemented according to requirements in the Argonne LMS Procedures. Follow the controls found in the MSDS, direct sprays away from the eyes, skin and body parts. Wear proper PPE (Safety glasses with sideshields) and gloves if stated in MSDS for use of common cleaning solvents. Eating or drinking is not allowed in areas where chemicals are being used. The solvents must be kept in proper, labelled containers and away from ignition sources. In case of emergency or spill dial 911.

Design Reviews and Equipment Inspections – None

Training –All core courses can be taken via the Remote Training web site.

  • APS101, APS User Orientation
  • ESH100U, ANL User Orienation
  • ESH738, General Employee Radiation Training (GERT)
  • ESH 223(U), Cyber Security
  • ESH 377, Electrical Safety Awareness (ANL Employees and Resident Users only)
  • APS2xx, Sector-Specific Training (where "xx" is the number of the host Beamline's sector). The orientation must include the requirements for routine cryogen procedures, such as filling dewars, if researcher will be working with cryogens.
  • Note: The requirement for ESH738 can be satisfied by completing GERT, Rad Worker 1, or Rad Worker 2 at another DOE facility offering training that complies with the DOE radiological worker core curriculum requirements. In this case, a GERT challenge exam must be taken at the APS.

Signs and Labeling – None beyond those already in place at the APS.

Personal Protective Equipment – Safety glasses and appropriate protective gloves for the incidental use of common cleaning solvents (see the solvent MSDS) when solvents are in use.

Experiment Authorization

Unless otherwise noted in the approved experiment safety plan, the PSC Deputy Associate Laboratory Director of Operations delegates the authority to authorize an experiment to any of the persons from the beamline that appear in the list of Beamline Personnel Authorized to Approve Experiments and to any member of the APS Experiment Review Board.

Hazard Control Verification

The PSC Deputy Associate Laboratory Director of Operations delegates responsibility for verifying that each experimenter is current on the six required training courses to the On-site Spokesperson (OS). To verify that the training is in place, the Experiment On-site Spokesperson and Beamline personnel must either find that the training has been recorded in the Argonne National Laboratory Training Management System or see other reliable evidence of training, e.g., training certificates or, in the case of GERT, a GERT or higher level radiation worker card. Reports showing training recorded in the Argonne National Laboratory Training Management System can be requested from the APS User Administration and Support Office.

Updated: March 14, 2017