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Blog posts of '2025' 'November'

Beverage CO₂ Safety for Waco Restaurants & Breweries: Storage, Monitoring, Compliance

Carbon dioxide (CO₂) is a crucial asset in beverage carbonation, draft systems, and production processes. Whether it’s served through kegs, craft taps, or fountain dispensers, CO₂ plays a key role in quality and consistency. But it also brings serious safety risks if not handled properly. In enclosed spaces like restaurants, bars, walk-in coolers, and breweries, even a minor leak can cause oxygen displacement and create an invisible—and deadly—hazard. At Dupuy Oxygen, we supply beverage-grade CO₂ throughout Central Texas and help local businesses stay compliant, protected, and CO₂-aware.

How CO₂ Behaves in the Workplace

CO₂ is an odorless, colorless gas that is heavier than air. When it leaks, it sinks and accumulates in low-lying spaces like basements, keg coolers, and storage rooms. At low concentrations, it can cause headaches, dizziness, or fatigue. At higher levels, it can lead to suffocation without warning. This makes CO₂ one of the most dangerous “silent hazards” in the food and beverage industry—and one that OSHA, TABC, TDSHS, and city inspectors take seriously.

Common Places CO₂ Leaks Occur

Leak points are often found in places where CO₂ is stored, distributed, or dispensed. These include:

  • Beverage gas cylinders and manifolds

  • Keg coolers and walk-ins

  • Soda fountain systems

  • Brewery fermentation tanks and brite tanks

  • Damaged or aging distribution lines

  • Improper fittings, valves, or regulators
    Leaks are especially dangerous when unnoticed—for example, overnight or in rarely accessed storage areas. Regular checks, inspections, and monitoring systems are necessary for safe operations.

OSHA & TABC CO₂ Safety Requirements in Texas

Businesses handling CO₂ must comply with OSHA’s permissible exposure limits (PEL), which cap workplace CO₂ levels at 5,000 ppm over an 8-hour period. Higher levels require corrective action, reporting, and mitigation systems. Additionally, food and beverage businesses must comply with rules governing high-pressure cylinder storage, ventilation, hazard communication, and employee training. Failure to comply can result in fines, shutdowns, or liability in case of injury.

CO₂ Monitoring Systems: Your First Line of Defense

Installing a fixed CO₂ monitoring system is no longer optional—it's a best practice and often a code requirement. These devices automatically measure ambient CO₂ levels and sound alarms when concentrations exceed safe limits. Alarms should trigger at:

  • 5,000 ppm: First alert—evacuate non-essential staff

  • 15,000 ppm: Emergency alarm—full evacuation required
    Modern monitors are wall-mounted and hardwired for accuracy, with sensor placement near floor level to detect CO₂ buildup early. When paired with automatic gas shutoff valves, they create an intelligent safety system that protects both staff and customers.

Best Practices for Beverage CO₂ Storage

Proper storage reduces risk and ensures regulatory compliance. Key requirements include:

  • Cylinders stored upright, chained, or cart-secured

  • No storage in unventilated basements, boiler rooms, or employee restrooms

  • Valve caps in place when not connected to a system

  • Nitrogen and CO₂ cylinders separated from flammable gases

  • Clear hazard signage posted in storage and fill areas
    Staff should never store cylinders near heat sources, ignition points, or tight spaces without ventilation. Dupuy Oxygen offers delivery, installation, and certified gas handling training to help businesses meet safety standards.

Delivery Options for Restaurants & Breweries in Waco

Dupuy Oxygen offers three delivery formats for beverage CO₂ customers in Central Texas:

  • Standard Cylinders: 20–50 lb cylinders for restaurants and taprooms

  • Microbulk Tanks: Small refillable vessels for high-volume CO₂ users

  • Bulk Systems: On-site CO₂ tanks with remote fill access—ideal for breweries, stadiums, or refineries
    Each format has unique safety needs and compliance requirements. We work with customers to size their system properly and prevent over-ordering, wasted gas, or unsafe storage conditions.

Employee Training & Hazard Communication

All staff working near CO₂ should understand:

  • How to identify CO₂ hazards

  • What to do in case of a leak or alarm

  • Where emergency shutoff valves are located

  • Why they should never enter a confined space with suspected CO₂ exposure
    Training is not only smart—it helps satisfy OSHA’s Hazard Communication Standard (29 CFR 1910.1200), which requires CO₂ to be treated as a hazardous substance.

Signs Your Business Needs a CO₂ Safety Assessment

You may be overdue for a safety check if:

  • You’ve expanded your draft system or added more kegs

  • Your cylinders are stored in a walk-in cooler

  • You don’t have CO₂ monitors installed

  • Employees have reported dizziness or odor complaints

  • You’ve never received CO₂ compliance training
    Dupuy Oxygen’s field specialists can perform on-site assessments to locate risks, recommend mitigation, and update your storage and monitoring systems.

Why Waco Businesses Trust Dupuy Oxygen

As the top beverage gas supplier in Central Texas, Dupuy Oxygen brings:

  • Beverage-grade, food-safe CO₂ delivery

  • Local route service and emergency dispatch

  • CO₂ monitoring equipment, installation, and training

  • Cylinder exchange and microbulk supply programs

  • Expertise serving breweries, bars, restaurants, cafeterias, and venues
    We’re not just a gas provider—we’re a safety partner for the food and beverage industry.

Keep Your Business CO₂ Safe with Dupuy Oxygen

Protect your employees, comply with OSHA standards, and ensure uninterrupted beverage service with professional CO₂ delivery and safety solutions.
Contact Dupuy Oxygen today for beverage CO₂, monitoring equipment, or a complete safety audit for your Waco-area restaurant or brewery.

Argon vs. CO₂ vs. Mix: Choosing the Best Shielding Gas for MIG in Central Texas

When it comes to MIG welding, your choice of shielding gas directly affects weld quality, spatter levels, penetration, arc stability, and ultimately—project cost. In Central Texas, where industries rely on reliable welding performance in manufacturing, production, repair, and energy sectors, selecting the right gas is a critical decision. At Dupuy Oxygen, we supply the full range of shielding gases—including pure argon, CO₂, and custom mixes—and guide welders and shop owners in choosing the best solution based on material, budget, and application.

Argon: The Inert Gas of Choice for Non-Ferrous Welding

Argon is a fully inert gas, meaning it does not react with molten metal. This makes it ideal for welding non-ferrous metals such as aluminum, magnesium, titanium, and copper alloys. For MIG welding aluminum, 100% argon is the industry standard, offering a stable arc, low spatter, and smooth bead appearance. Steel applications are limited with pure argon, as the gas does not promote adequate penetration. For stainless steel, argon can be used but is typically blended with CO₂ or O₂ for improved results. Argon’s low ionization potential also contributes to a smooth, controlled arc, making it suitable for precision welding, thinner materials, and high-detail work.

CO₂: High Penetration at a Low Cost

100% CO₂ is the most cost-effective shielding gas in MIG welding—and the only active gas commonly used alone. It offers deep penetration, making it ideal for structural steel, heavy plate, farm equipment repair, and applications requiring strong root fusion. However, the trade-off is higher spatter, a harsher arc, and more post-weld cleanup. Many Central Texas fabrication and agricultural shops choose CO₂ for its price point and penetration on mild steel, especially where appearance is less critical than durability. For semi-automatic applications, CO₂ requires additional cleanup time and can increase wear on consumables due to arc instability.

Argon/CO₂ Blends: The MIG Welding Workhorse

The most common MIG shielding gas is a blend of argon and CO₂—typically in ratios such as 75/25 (C25), 85/15, or 90/10. These blends combine the arc stability and low spatter of argon with the penetration benefits of CO₂. A 75/25 blend (75% argon, 25% CO₂) is widely used for carbon steel welding and provides smooth metal transfer, good bead appearance, and reduced cleanup. Higher-argon blends (90/10 or 95/5) are suited for robotic welding, spray transfer, and high-production environments, minimizing downtime and rework. Shops working with both thin and medium-gauge steel often standardize on C25 for versatility and predictable performance.

Choosing Based on Transfer Mode

Your shielding gas must match your transfer mode.

  • Short Circuit Transfer: Works with 100% CO₂ or 75/25 blends. Good for thin materials, out-of-position welding, and lower heat input.

  • Globular Transfer: Possible with pure CO₂, but not preferred due to high spatter and poor aesthetic.

  • Spray Transfer: Requires at least 80% argon, giving high deposition rates, low spatter, and deep penetration on thicker steel in flat or horizontal positions.

  • Pulsed MIG: Ideal for aluminum and stainless steel using high-argon blends. Offers low heat input without sacrificing weld quality.
    Knowing your transfer mode helps narrow down the right gas long before you buy.

Cost vs. Performance in Central Texas Shops

Shielding gas cost varies significantly—pure CO₂ is the most affordable, while argon-based blends cost more per cubic foot. However, the cheapest gas is not always the most cost-efficient. High-spatter CO₂ means more time spent grinding, cleaning, and reworking. In contrast, 75/25 or 85/15 blends reduce cleanup, improve bead quality, and shorten production time. For high-volume welding operations in Waco, Temple, Killeen, and surrounding areas, the labor savings often outweigh the slightly higher gas cost—especially when producing visible welds or working with automated equipment.

Material Matters

Your material type should always guide gas selection:

  • Mild Steel: 100% CO₂ or 75/25 argon mix

  • Stainless Steel: Argon/CO₂/O₂ blend (e.g., 90/7.5/2.5)

  • Aluminum: 100% argon (or Ar/He mix for thicker sections)

  • Galvanized Steel: 75/25 with anti-spatter techniques
    Dupuy Oxygen can provide custom blends if your application has unique wetting, penetration, or bead profile requirements.

Cylinder, Microbulk, or Bulk Supply Options

Whether you're running a single-shop setup or a multi-bay production line, we offer various supply configurations:

  • Individual Cylinders: Ideal for small welding operations or mobile work

  • Microbulk Tanks: Cost-effective for medium-volume shops using 750–3,000 cubic feet/month

  • Bulk Tanks: Designed for large manufacturers or ongoing high-volume MIG welding
    Central Texas welders can choose the right size, pressure, and delivery frequency for their business—without overpaying for unused capacity.

Weld Troubleshooting: Shielding Gas Issues

Common signs you’re using the wrong gas:

  • Excessive spatter

  • Porosity or wormholes in the bead

  • Poor penetration or cold lap

  • Unstable or sputtering arc

  • Burn-through on thin sheet metal
    Gas selection isn’t the only variable, but it’s one of the most common root causes of weld inconsistency. Dupuy Oxygen’s team can help diagnose issues and recommend the right gas adjustment.

Why Central Texas Welders Trust Dupuy Oxygen

Dupuy Oxygen has supplied welding gases, cylinders, and custom mixes across Central Texas for decades. We work directly with fabrication shops, metalworking businesses, manufacturers, trade schools, and pipeline contractors to deliver:

  • Top-grade gas purity

  • Fast cylinder swapouts and delivery routes

  • Competitive pricing for bulk and microbulk

  • Technical support from experienced welding gas specialists
    We’re not just a supplier—we’re a long-term industrial partner.

Ready to Select the Best Gas for Your MIG Setup?

Whether you're welding steel, aluminum, or stainless—and whether you run one torch or 50—Dupuy Oxygen has the right gas, supply format, and expertise for the job. Our team can help you compare cost, weld quality, and delivery options so you get the best long-term value.
Contact Dupuy Oxygen today for MIG gas pricing, shop evaluations, or on-site delivery anywhere in Central Texas.