The Sherwood Dupont Nomex IIIA Flame Resistant Coverall FRC 150gm2 is engineered for workers who face intense thermal hazards in petrochemical, utility, and industrial settings. This coverall combines inherently flame-resistant Nomex IIIA fabric with a 150 grams per square meter weight, delivering reliable protection without sacrificing comfort during long shifts.
Designed to meet rigorous standards such as NFPA 2112, this coverall provides a critical layer of defense against flash fires and arc flash events. The following sections explore technical specifications, performance features, and practical guidance for selecting and using this FR garment.
Key Specifications at a Glance
| Specification | Details | Relevance |
|---|---|---|
| Material | Nomex IIIA (meta-aramid blend) | Inherent flame resistance, durable comfort |
| Weight | 150 gm² | Balanced protection and breathability |
| Standard | NFPA 2112, ASTM F1506 | Verified performance for flash fire |
| Coverage | Full-body coverall with attached hood | Sealed protection for head to toe |
| Certification | Third-party test reports included | Compliance documentation for safety audits |
Performance in Flash Fire Scenarios
How Nomex IIIA Fabric Works
Nomex IIIA fabric combines meta and para aramid fibers to create a fabric that resists ignition and self-extinguishes when exposed to flame. This behavior helps minimize burn injury by limiting heat transfer to the body during a flash fire event.
Design Features for Thermal Protection
The Sherwood Dupont coverall incorporates tight seam construction and reinforced stitching to reduce ignition sites and promote consistent performance. Elastic closures at cuffs and ankles help prevent ingression of flames or hot air, enhancing overall protection.
Arc Flash Protection Capabilities
Arc Rating and Incident Energy
While primarily designed for flash fire protection, this coverlay also offers arc-rated performance compliant with ASTM F1506. The fabric resists breakopen and maintains insulation properties when exposed to electric arc incidents.
Integration with Layered Systems
Workers can wear this coverall over an arc-rated base layer to build a comprehensive PPE system. Layering strategies should follow industry guidelines to ensure total arc energy management across all clothing layers.
Standards and Certification Details
Key Test Methods and Limits
Third-party laboratories evaluate this coverall using standardized tests for fabric flammability, tear resistance, and tensile strength. Certification to NFPA 2112 confirms that the garment meets minimum requirements for industrial flash fire protection.
| Standard | Test Method | Pass Criteria | Compliance Status |
|---|---|---|---|
| NFPA 2112 | Standard Time for Protective Clothing | Breakopen threshold and manikin test | Certified compliant |
| ASTM F1506 | Standard Performance Specification | Arc rating and fabric hole formation | Certified compliant |
| EN 11612 | Heat and Flame Protection | Heat transfer and afterflame times | Tested and reported |
Selection, Use, and Maintenance Guidelines
Fit, Sizing, and Donning Procedures
Proper fit is essential to ensure full coverage and avoid gaps that could allow flame or heat to reach skin. Training on correct donning procedures helps workers seal zippers, adjust cuffs, and verify hood integration before entering hazardous areas.
Care and Service Life Considerations
Industrial laundering and routine inspections help maintain fabric integrity and visibility. Operators should follow manufacturer guidance for washing cycles, repair limits, and retirement timelines to ensure ongoing compliance and performance.
Key Takeaways for Safety Managers and Workers
- Verify certification marks and third-party test reports before deployment
- Use proper layering strategies to address both arc flash and flash fire risks
- Implement regular inspection and cleaning protocols to preserve fabric performance
- Train personnel on correct donning procedures to maintain full coverage
- Plan for scheduled replacement based on wear patterns and manufacturer guidance
FAQ
Reader questions
Can this coverall be worn for both flash fire and arc flash hazards?
Yes, the Sherwood Dupont Nomex IIIA FR Coverall meets requirements for flash fire protection under NFPA 2112 and provides arc-rated performance per ASTM F1506, making it suitable for environments with both thermal hazards when used within specified limits.
What is the recommended replacement schedule for 150gm2 Nomex IIIA coveralls?
Service life depends on wear frequency, laundering conditions, and visible damage. Regular inspections for thinning, discoloration, and seam integrity help determine when replacement is necessary; many employers follow a scheduled change-out program aligned with task risk levels.
How does the 150gm2 weight affect comfort and mobility in hot environments?
The 150gm2 designation offers a middle ground between lightweight daily wear and heavy-duty industrial protection. The inherent breathability of Nomex IIIA and strategic paneling reduce heat stress while still providing consistent flame resistance during extended shifts.
Are accessories like hoods and gloves sold separately or included with the coverall?
Hoods and gloves are typically sold separately, but compatible options are available to match the coverall’s arc rating and flame-resistant properties. Selecting tested accessory components ensures consistent protection across the ensemble.