Experiment Hazard Class 6.7 – Explosive and Energetic Materials


All experiments involving the use of small quantities ( < 10 mg total) of explosive material for beamline analysis. Visiting scientists at the APS periodically perform beamline experiments involving small quantities of explosive material (ie, TATB, HMX, RDX, PETN, HNFX). The samples that are analyzed within the x-ray beam are typically encased within a Diamond Anvil Cell (DAC) that is designed to exert pressures of ~ 100 GPa as its routine function. Following a few hours of analysis within the x-ray flux, the samples degrade and must be replenished. For this purpose, up to ten 1 mg samples of the explosive material are shipped with the DAC to allow for a complete data set.

Explosive material must be transported to and from ANL through Bldg. 46, ANL Shipping/Receiving Department (Jeff McGhee, 630-252-5712 or Doreen Schoening, 630-252-2934) in compliance with DOT regulations or applicable DOT exemptions based on the type and quantities shipped. Upon arrival of the explosive material at Bldg. 46, the material may only be transported to the APS and back to Bldg. 46 via an ANL HazMat truck or a government vehicle operated by APS staff.

All explosive material that is brought to ANL/APS for experimental use must be returned to the users’ home institution upon completion of the experiment.

* Any special explosive material operations or quantities whose scope of work falls outside the “applicability” section of this hazard class will be reviewed by either the APS Chemical Hygiene Officer and/or a member of the APS Experiment Safety Review Board on an individual basis.

** This hazard class does not cover any detonation of small quantities of explosive material at any APS beamline or laboratory. Such proposals require a separate APS, ANL and DOE review.

Experiment Category

Experiments involving only experiment hazard class 6.7 qualify for medium risk. The addition of other hazard classes may require the experiment to be categorized as high risk and undergo additional reviews.

Experiment Hazard Control Verification Statements

Engineered Controls – The explosive material must be protected from excessive temperatures, electrical sparks, ignition sources, etc. In the case of lightning or an approaching storm, continued operations involving explosive material will be reviewed by the APS Experiment Safety Review Board on a case-by-case basis with respect to the type and quantities involved in the experiment.

Since the explosive material degrades significantly while in the APS x-ray beam, decontamination of the DAC is unlikely. If any questions exist about a possible need for decontamination, contact the APS Chemical Hygiene Officer or a member of the APS Experiment Safety Review Board.

Procedural Controls – APS Users who will be working within Experiment Hazard Class 6.7 should submit an ESAF at least 3 weeks prior to any beamline experiments involving explosive material in order to verify proper transport method and to ensure timely approval by both the host sector and the APS Experiment Safety Review Board. Lack of approval by either entity may result in forfeiture of your scheduled beamtime.

An inventory list of the explosive material will be sent by the APS Chemical Hygiene Officer (Paul Rossi, 630-252-4192) to ANL Security, ANL Fire Department, the ANL Explosive Safety Specialist (Frank Curran, 630-252-7293), FMS - Safety & Emergency Systems and APS Building Management (Rick Janik 630-252-6068). This list will include the type of explosive material, name of material, volume, weight or quantity, location, responsible party w/alternate, manufacturer of material, and lot numbers or serial numbers, if applicable. The above ANL groups will also be notified upon removal of the explosivematerial from ANL premises.

Design Reviews and Equipment Inspections – The responsible person for the explosive material must determine the toxicity, hazardous properties and transportation classification of the material using the manufacturer's MSDS or other information sources.

Any special components or equipment (other than DAC’s) to be used for containing explosive material during the experiment will be reviewed on an individual basis.

Training – Personnel involved with operations dealing with explosive material may be consulted by the ANL Explosive Safety Specialist (Frank Curran, 630-252-7293) at a level dependent upon the type of operations being conducted.

Storage and Labeling – When the explosive material arrives at the APS and is removed from its shipping packaging, sympathetic detonation must then be immediately precluded through the storage of the samples within a non-propagating array. This can be accomplished by segregating up to ten 1 mg quantities of the samples packaged within glass or plastic vials or tubes. The vials or tubes are then to be placed within a sturdy, lockable metal box (ie, a cash box) that is to be either kept within a cabinet or bolted to a benchtop. This box MUST remain locked whenever the samples are not in use. The area(s) where the explosive material is to be used and/or stored must also be posted with an NFPA 704 label and MSDS to warn of potential explosion hazards and also provide emergency information. An NFPA 704 label may be obtained from the APS Chemical Hygiene Officer.

Personal Protective Equipment – As specified in the MSDS for the explosive material. At a minimum, safety glasses and gloves appropriate for the material are to be worn during any handling of the explosive or energetic material.

Experiment Authorization

Unless otherwise noted in the approved experiment safety plan, the Director of the APS Experiment Support Division delegates the authority to authorize an experiment in this hazard class to a member of the APS Experiment Safety Review Board and resident beamline personnel appearing in the Director of the AES' list of personnel having the authority to authorize experiments. Approval by both the host sector and the APS Experiment Safety Review Board are mandatory prerequisites for experiment authorization.

Hazard Control Verification

The Director of the APS Experiment Support Division delegates responsibility for verifying that required controls are in place to the experiment On-site Spokesperson and Beamline Management.


ANL LMS-PROC-88 Safe Use of Explosives

Reviewed May 10, 2013