A few years ago, I sat across from a plant manager at a refinery outside Houston, watching him tap his pen on a printed network diagram dotted with little red Xs. “We need wireless here,” he said, not looking up, “but if one of those regular APs blows up? We’re talking $20 million in downtime, plus OSHA fines that’ll make your eyes water.” I didn’t interrupt that day, but I’ve thought about that conversation a hundred times since—especially when clients ask the question that’s the title of this post: Can an Explosion Proof Wireless AP Be Used in a Large-Scale Network? Explosion Proof Wireless AP
For too long, the answer’s been a messy, half-truth: “Only if you scale it wrong.” But I’ve spent the last eight years designing and manufacturing explosion proof wireless APs (and fixing the ones that didn’t play nice with big networks) and I’m here to tell you that not only is it possible—it’s often the only reliable, compliant option for large-scale networks operating in hazardous locations. Let’s break this down, no jargon, no sales fluff, just what I’ve learned working with refineries, chemical plants, and offshore rigs across North America, Europe, and the Middle East.
First, let’s get one basic fact straight: what makes an AP “explosion proof” isn’t just a metal casing. It’s the certification. UL 913 for Class I Divisions 1 and 2, ATEX/IECEx for zones 0, 1, and 2—these standards don’t just test a box. They test that the AP can contain an internal spark or arc, and that it won’t ignite flammable gases, dust, or fibers in the surrounding atmosphere. That’s non-negotiable for any space where gasoline, propane, or volatile organic compounds (VOCs) are present, which is why large-scale hazardous location networks aren’t just nice-to-have—they’re mandatory for things like remote monitoring of pipeline valves, automated material handling, and employee safety check-ins.
Now, the myth that stops most people from deploying these at scale: “They’re too expensive and too limited to use beyond a few APs.” Ten years ago, that was sort of true. Early explosion proof APs had only 2.4 GHz radio, maxed out at 10 clients, and couldn’t roam more than 50 feet without dropping a connection. But today’s models? Dual-band (2.4 GHz for coverage, 5 GHz for throughput), 4×4 MIMO antennas that can push 1.2 Gbps of data, and seamless roaming that works even across 10+ APs spaced 100+ feet apart. We’ve deployed networks with 120 explosion proof APs across a 2-square-mile refinery, and the roaming latency clocks in at under 50 milliseconds—same as any enterprise-grade AP you’d buy for an office. That’s not small-network tech anymore.
But scaling isn’t just about the hardware. It’s about how you design the network, and that’s where a lot of people (even some explosion proof AP suppliers) mess up. Let’s walk through three common pitfalls we’ve helped clients avoid when building large-scale explosion proof networks.
First pitfall: Underestimating interference in hazardous locations. Regular APs in an office might only deal with a few microwaves or cordless phones, but refineries have steel pipe that absorbs radio signals, high-voltage equipment that bleeds RF noise, and multiple other wireless systems (SCADA, RFID, worker wearables) all operating in the same spectrum. We learned this the hard way early on: a client in the Gulf tried to deploy 20 APs on a single 2.4 GHz channel, and every time a vacuum truck drove past, the whole network dropped out. Now, for large networks, we design for channel planning that accounts for both RF interference and explosion proof AP output power. Unlike regular APs, explosion proof models can’t just crank up power to reach farther—higher power means more heat, and more heat could ignite flammable materials (even if the casing is explosion proof, the internal components have heat limits). So we adjust placement: instead of placing one AP every 200 feet, we place them every 350 feet, split across non-overlapping channels, and use directional antennas for long stretches of pipe racks, instead of omnidirectional ones that bleed signal into high-noise areas. The result? Zero dropped connections, even in the noisiest parts of a plant.
Second pitfall: Treating explosion proof APs like they’re regular APs when it comes to network management. Most IT teams are used to logging into a central controller to configure 100 APs, push firmware, and monitor for issues. But early explosion proof APs required local configuration at each unit—a nightmare for a network spread across a 2-mile site. Today, our APs support centralized management, same as any enterprise AP, but with a critical add-on: isolated security. Hazardous location networks hold some of the most sensitive data in any industrial setting—pipeline pressures, chemical levels, safety protocols—so you can’t just plug them into a generic corporate network and hope for the best. We build in role-based access control that lets plant floor engineers monitor real-time data, while IT teams only get access to firmware updates and network diagnostics, and no one can alter safety settings. We also do automatic firmware updates that don’t require a site visit—push it to the central controller, and every AP installs it overnight, when the plant is idle. That’s a game-changer for large sites where sending a tech to climb a pipe rack is a 4-hour job, plus overtime.
Third pitfall: Forgetting that reliability matters more than speed at scale. When you’re deploying 50+ APs, every single one has to work 99.99% of the time. A regular AP that goes down for an hour in an office is an inconvenience. An explosion proof AP that goes down for an hour in a chemical plant can mean a whole section of the facility is blind to leaks, valves, and worker locations. Early on, we tried to save clients money by using lower-grade internal components in our APs to keep costs down, and we had a client in Germany lose $1.2 million when three APs failed during a heatwave, because the power regulators weren’t rated for high temperatures. That mistake taught us a core rule: for large-scale explosion proof networks, every component has to be rated not just for hazardous locations, but for the specific operating conditions of the site. We test every AP for extreme temperatures (-40°F to 185°F, standard for industrial sites), vibration (10G, same as offshore rigs), and even corrosion resistance (for coastal refineries that use saltwater for cooling). We also build in redundant power supplies for large networks—so if one power line fails, a backup kicks in automatically, no downtime. For our biggest clients, we even add a local server at their main control room that acts as a backup controller, so if our cloud management system goes down, the network keeps running.
Now, let’s talk numbers, because that’s what CFOs care about. A few years ago, a client asked us to price a 80-AP network for a refinery in Corpus Christi. They initially got a quote from a competitor that mixed regular APs with “limited-use” explosion proof APs, and the total cost was $450,000, with a projected downtime of 12 hours a year. Our quote? $420,000, with a projected downtime of less than 1 hour a year. The difference? We designed the network to use our enterprise-grade explosion proof APs, instead of trying to combine two different types of hardware, and we accounted for hidden costs: the competitor’s network required monthly site visits to fix roaming issues, plus $10,000 a year in fines from OSHA because their uncertified APs weren’t up to code. Over 5 years, our network saved that client over $2 million in downtime, fines, and maintenance.
But here’s the thing: explosion proof APs aren’t for every large network. If your “large-scale network” is a warehouse with no flammable materials, regular APs will work fine. But if you’re operating in a hazardous location, the question isn’t whether you can use explosion proof APs at scale—it’s whether you can afford not to. We’ve had clients switch from regular APs that kept needing replacements after dust or gas exposure, and their maintenance costs dropped by 70% within a year.
I know this stuff can sound complicated, especially if you’re an IT manager used to shopping for off-the-shelf hardware. That’s why our team doesn’t just sell APs—we do a site assessment first, for free. We walk your facility, map out high-risk areas, test RF signal levels, and build a custom design that works for your specific operations, whether you need 10 APs or 200. We also provide full training for your IT and plant teams, so you don’t have to learn a new system, and 24/7 support, because when a network goes down in a refinery, it’s not a 9-to-5 problem.
At the end of the day, the plant manager I sat with in Houston? Last year, I got an email from him. He’s now the VP of operations for that refinery, and they just deployed our 112-AP network across their entire site. The email said, “We haven’t had a single unplanned outage in 8 months. That’s the longest stretch we’ve had in 10 years.” That’s the answer to the question: yes, explosion proof wireless APs can absolutely be used in a large-scale network—when you design them right, choose the right hardware, and work with a supplier who knows both hazardous locations and enterprise networking.
If you’re building a network for a hazardous location, whether it’s a small facility or a multi-site operation, we can help you design, deploy, and maintain a reliable, compliant large-scale network that fits your needs. We’re here to answer your questions, walk through site requirements, and work with your team every step of the way.
X Series Wireless Bridge References
- National Fire Protection Association. (2021). NFPA 70: National Electrical Code, Article 500 – Hazardous (Classified) Locations.
- Underwriters Laboratories. (2022). UL 913: Standard for Safety for Intrinsically-Safe Apparatus for Use in Class I, II, and III Divisions 1 and 2 Hazardous (Classified) Locations.
- International Electrotechnical Commission. (2023). IECEx System – Certification of Equipment for Explosive Atmospheres, Parts 1–10.
- Industrial Automation Networking Association. (2022). Best Practices for Wireless Networks in Hazardous Industrial Environments.
- U.S. Occupational Safety and Health Administration. (2021). Control of Hazardous Energy and Electrical Safety for Petroleum Refineries, Directive CPL 03-00-008.
Jinan Bodaxun Communication Technology Co., Ltd.
With abundant experience, we are one of the most professional explosion proof wireless ap manufacturers and suppliers in China. Please rest assured to buy high quality explosion proof wireless ap for sale here from our factory. For price consultation, contact us.
Address: 4-501, Future Smart Manufacturing Center, China Computing Valley, Liandong U Valley, High-tech Zone, Jinan City, Shandong Province
E-mail: lmj@bodacomwlan.com
WebSite: https://www.bodacomwlan.com/
