Electronics, Cell Phones, Radios & Medical Devices Around Explosives: What Blasters Need to Know
At Petr Explosives Group’s Practical Explosives Training School (PETS), we often get questions about cell phones, two-way radios, vapes, and even medical devices like insulin pumps. Here’s clear, practical guidance based on regulations and real-world field experience.
Cell Phones and Radios Near Explosives
The ATF does not have a blanket rule banning cell phones or radios around explosives. ATF regulations (27 CFR Part 555) focus on licensing, magazine construction, recordkeeping, safe storage, and preventing theft — not on personal electronics.
The real concern is accidental initiation of electric detonators through Radio Frequency (RF) energy. This risk is highest with older electric blasting caps and much lower with modern non-electric (shock tube) or properly shielded electronic detonators.
Common Industry Practices:
- During loading, hookup, and tie-in of electric detonators, most sites limit or prohibit the use of transmitting radios and unnecessary cell phone use.
- For NONEL/shock tube systems, restrictions are usually less strict — but site-specific rules always apply.
- Many companies follow the simple rule: “If you don’t need the device for the blast operation — leave it in the truck.”
Modern cell phones generally pose lower RF risk than older high-power radios, but companies still restrict them to prevent distractions, photography, and maintain a strong safety culture.
Electronics Inside or Near Explosives Magazines
ATF rules do not explicitly prohibit cell phones or radios inside explosives magazines. However, responsible operators still minimize risks:
- Lithium batteries and charging ports can fail or spark (low probability, but not zero).
- Security and distraction concerns (no photos in secure areas).
- Stronger restrictions often apply to magazines storing electric blasting caps.
Standard field practice: No smoking, no vaping, and no unnecessary electronics inside magazines. Only authorized personnel and emergency-use devices are typically allowed.
Insulin Pumps and Other Medical Devices
There is no ATF regulation that prohibits licensed blasters from using an insulin pump or similar medical devices.
The focus is on fitness for duty rather than the device itself:
- Can the person safely perform the job?
- Is blood sugar well-controlled?
- Does the device create any site-specific issues?
Recommended Best Practices for Blasters Using Insulin Pumps:
1. Medical Clearance — Confirm with your doctor that you can handle long shifts, heavy physical work, extreme temperatures, and irregular meals.
2. Stable Glucose Levels — Never perform critical tasks (loading, wiring, driving explosive trucks, or firing shots) while experiencing hypo- or hyperglycemia symptoms.
3. Notify Supervisors (as needed) — Share emergency procedures and glucose supply locations without disclosing unnecessary personal medical details.
4. Secure the Device — Protect the pump from snagging, vibration, dust, water, and heavy equipment.
5. Wireless Features — Bluetooth-enabled pumps (e.g., Medtronic, Dexcom, Insulet) should be reviewed against site electronics policies near sensitive electric detonators.
6. Emergency Supplies — Keep glucose tablets, snacks, and backup insulin readily available in approved locations.
Simple teaching takeaway we use at PETS:
“Medical devices are not automatically disqualifying — unsafe impairment is.”
Key Takeaways for the Field
- ATF regulates storage, licensing, and overall possession of explosives.
- MSHA/OSHA focus on workplace safety and preventing accidents.
- Manufacturers (Orica, Dyno Nobel, Enaex, etc.) provide product-specific guidance for their detonators.
- Company SOPs & Insurers set the day-to-day rules on most blast sites.
Practical Lecture Phrase for Training:
ATF regulates the explosives. MSHA, manufacturers, and your company regulate how you behave around them.
At Petr Explosives Group, we prioritize building professional habits that protect lives, licenses, and reputations. Clear policies on electronics and medical fitness are part of a strong safety culture.
If you’re interested in our Practical Explosives Training School (PETYS) on June 8-9,2026 in Jackson Hole, Wyoming, or have questions about field best practices, feel free to contact us. We’re here to help you stay safe and compliant on every job.
NOTE: This is general information based on current regulations and industry standards. It is not legal or medical advice. Always consult the latest ATF rules, MSHA/OSHA guidance, your employer’s policies, and manufacturer instructions for your specific operations.
Stay safe — every shot should be a safe shot.
Petr Explosives Group
