Portwest PW3 Modaflame Knit HVO FR Long Sleeve T-Shirt

The Portwest PW3 Modaflame Knit HVO FR Long Sleeve T-Shirt delivers exceptional multi-hazard protection specifically designed for workers in rail industry and high-visibility environments. Part of the premium PW3 collection, this inherently flame resistant t-shirt combines advanced Modaflame Knit HVO technology with the comfort and flexibility demanded by modern workers. Certified to RIS 3279-TOM for trackside operations, it represents the ideal base layer for rail industry professionals.

Constructed from lightweight Modaflame Knit HVO fabric, this t-shirt offers outstanding freedom of movement through its innovative segmented tape design. The inherent flame resistant properties are woven into the fabric structure, meaning protection never diminishes regardless of how many times the garment is laundered. Unlike chemically treated alternatives, the flame resistance is permanent and reliable throughout the garment's entire working life.

The HVO (High Visibility Orange) designation indicates this t-shirt meets the stringent requirements of both EN ISO 20471 Class 3 for high visibility and RIS 3279-TOM for rail industry use. This dual certification makes it perfect for trackside workers, infrastructure maintenance teams, and anyone requiring maximum visibility combined with flame and arc flash protection. The heat-applied segmented reflective tape enhances visibility while maintaining the garment's flexibility.

Designed with wearer comfort as a priority, the PW3 Modaflame Knit HVO T-Shirt features ribbed cuffs, a crew neck, and a comfort fit that allows all-day wear without restriction. The carbon fibre content provides inherent anti-static protection, making it suitable for ATEX environments where electrostatic discharge poses a risk. With 40+ UPF rated fabric blocking 98% of UV rays, outdoor workers benefit from comprehensive protection against sun damage.

Key Features & Benefits

Inherent Flame Resistance

• Modaflame Knit HVO fabric with permanent FR properties
• Flame resistance woven into the fibre structure, never washes out
• Protection against radiant, convective and contact heat
• Modacrylic fibres are difficult to ignite and self-extinguishing
• Consistent protection throughout garment lifetime

Rail Industry Approved

• RIS 3279-TOM Issue 2 certified (Orange)
• Approved for Network Rail trackside operations
• Meets UK rail industry high-visibility requirements
• Suitable for infrastructure maintenance and signalling work
• Compliant with railway safety standards

High Visibility Performance

• EN ISO 20471 Class 3 certified for maximum visibility
• Heat applied segmented reflective tape
• Fluorescent orange fabric for daytime visibility
• Reflective tape for low-light and night-time visibility
• Ensures workers are seen in all lighting conditions

Arc Flash Protection

• IEC 61482-2 certified for arc flash hazards
• IEC 61482-1-1: ELIM rating for open arc testing
• IEC 61482-1-2: APC Class 1 for box test
• Protection against electrical arc incidents
• Essential for electrical and utility workers

Anti-Static Properties

• EN 1149-5 certified anti-static performance
• Carbon fibre content provides inherent static dissipation
• Suitable for ATEX Zone 1 and Zone 2 environments
• Prevents dangerous electrostatic discharge
• Safe for use around flammable atmospheres

Flame Resistant Multi-Norm Certification

• EN ISO 11612 A1, B1, C1, F1 flame protection
• A1: Limited flame spread
• B1: Convective heat resistance
• C1: Radiant heat resistance
• F1: Contact heat resistance

Superior Comfort

• Lightweight knit fabric construction
• Segmented tape design for unrestricted movement
• Ribbed cuffs for secure, comfortable fit
• Crew neck design
• Comfort fit for all-day wear
• High cotton content for breathability and moisture management

UV Protection

• 40+ UPF rated fabric
• Blocks 98% of harmful UV rays
• Essential protection for outdoor workers
• Reduces risk of sun damage during extended outdoor exposure

Quality Certifications

• CE-CAT III: Complex Design PPE
• CE certified for European compliance
• UKCA marked for UK market
• Tested to multiple international standards

Technical Specifications

Safety Standards & Certifications

The Portwest PW3 Modaflame Knit HVO FR Long Sleeve T-Shirt is certified to multiple international safety standards:

Flame Resistance:

• EN ISO 11612 A1, B1, C1, F1 – Protective clothing against heat and flame
• A1: Limited flame spread
• B1: Convective heat (thermal protection)
• C1: Radiant heat resistance
• F1: Contact heat resistance

Anti-Static:

• EN 1149-5 – Electrostatic properties (material performance)

Arc Flash Protection:

• IEC 61482-2 – Arc flash protection
• IEC 61482-1-1 – Open arc test (ELIM rating)
• IEC 61482-1-2 APC Class 1 – Box test arc protection class

High Visibility:

• EN ISO 20471 Class 3 – High-visibility warning clothing (maximum visibility)

Rail Industry:

• RIS 3279-TOM Issue 2 – Rail Industry Standard for high-visibility clothing (Orange only)

Additional:

• CE-CAT III – Complex Design Personal Protective Equipment
• UKCA Marked – UK Conformity Assessed
• 40+ UPF – Ultraviolet Protection Factor

Understanding Modaflame Knit HVO Technology

Modaflame Knit HVO represents Portwest's advanced fabric technology specifically developed for environments requiring both high-visibility and flame resistant protection:

Inherent Protection Unlike chemically treated fabrics where FR properties can wash out over time, Modaflame Knit HVO uses inherently flame resistant fibres. The modacrylic content is naturally difficult to ignite and self-extinguishing when the ignition source is removed. This means protection is permanent and consistent.

High Visibility Orange (HVO) The HVO designation indicates this fabric meets the specific colour requirements for orange high-visibility garments, including the more stringent requirements of the rail industry (RIS 3279-TOM). The fluorescent orange colour provides maximum daytime visibility.

Carbon Fibre Anti-Static The inclusion of carbon fibre in the fabric blend provides permanent anti-static properties. Unlike surface treatments that can wear away, the carbon fibre is woven throughout the fabric, ensuring consistent static dissipation for the life of the garment.

Comfort Through Technology The knit construction offers excellent stretch and recovery, providing comfort during physical work while the natural fibres in the blend help with moisture management and breathability.

Ideal Applications & Industries

The Portwest PW3 Modaflame Knit HVO FR Long Sleeve T-Shirt is ideal for professionals in:

• Rail Industry – Trackside maintenance, infrastructure work, signalling (RIS 3279-TOM certified)
• Electrical Utilities – Power generation, transmission, distribution
• Oil & Gas – Refineries, petrochemical plants, offshore platforms
• Welding & Hot Works – Fabrication shops, shipyards, construction sites
• Manufacturing – Steel mills, foundries, metal processing
• Chemical Processing – Chemical plants, pharmaceutical manufacturing
• Mining & Quarrying – Underground and surface mining operations
• Emergency Services – Fire and rescue support operations
• Highways & Roadworks – Traffic management, road construction
• Construction – Multi-hazard construction sites
• Utilities – Gas, water, telecommunications infrastructure

Why Choose HVO for Rail Industry Work?

The RIS 3279-TOM standard (Track Operator Marking) is the UK rail industry specification for high-visibility clothing. Key benefits of HVO certification include:

Regulatory Compliance Working trackside without RIS 3279-TOM certified clothing is not permitted. The HVO certification ensures you meet Network Rail and other rail operator requirements.

Maximum Visibility Orange high-visibility provides excellent contrast against typical railway environments, ensuring workers are visible to train drivers, vehicle operators, and colleagues.

Multi-Hazard Protection Rail environments present multiple hazards including flame, arc flash, and static discharge. HVO garments address all these risks in a single certified product.

Consistent Standards RIS 3279-TOM ensures all workers are equipped to a consistent, high standard across the UK rail network.

The PW3 Collection Advantage

PW3 represents Portwest's premium workwear collection, combining advanced technical features with contemporary styling:

• Premium Fabrics – Advanced materials engineered for performance
• Multi-Trade Flexibility – Suitable across diverse industries
• Exceptional Value – Professional quality at competitive pricing
• Modern Design – Contemporary styling workers want to wear
• Comprehensive Range – Full head-to-toe solutions available
• Proven Durability – Built to withstand demanding work environments

Layering System

The PW3 Modaflame Knit HVO FR T-Shirt functions as an excellent base or mid-layer in a comprehensive FR protection system:

As Base Layer: Wear directly against skin under heavier FR garments for maximum thermal protection and arc rating.

As Standalone: Suitable for standalone wear in warmer conditions where flame and arc protection is required.

Layering Partners:

• FR sweatshirts and hoodies for additional warmth
• FR jackets for weather protection
• FR coveralls for full body protection
• FR trousers for lower body protection

Important Note: When layering FR garments, all layers must be flame resistant. Never wear non-FR garments underneath FR clothing as they can contribute to injury in a thermal incident.

Care Instructions

To maintain optimal protection, visibility and longevity:

• Machine wash at maximum 40°C, mild process
• Use mild detergent – avoid fabric softeners and bleach
• Do not bleach
• Do not tumble dry
• Line dry in shade
• Iron at maximum 110°C if required
• Do not dry clean
• Inspect garment regularly for damage, wear or contamination
• Replace garment if reflective tape is damaged or visibility is compromised
• Replace garment if fabric shows signs of damage or contamination

Why Choose Portwest PW3 Modaflame Knit HVO?

Portwest has been manufacturing protective workwear since 1904, and the PW3 Modaflame range represents their commitment to innovation and quality. When you choose this t-shirt, you're investing in:

• Rail Industry Approval – RIS 3279-TOM certified for trackside work
• Maximum Visibility – EN ISO 20471 Class 3 for highest-risk environments
• Permanent FR Protection – Inherent flame resistance that never washes out
• Arc Flash Safety – IEC 61482-2 certified protection
• Anti-Static Properties – EN 1149-5 certified for explosive atmospheres
• All-Day Comfort – Lightweight, flexible knit construction
• UV Protection – 40+ UPF rating for outdoor workers
• Proven Quality – CE-CAT III and UKCA certified

Companion Products

For complete PW3 FR HVO protection, pair this t-shirt with:

• PW3 Modaflame Knit HVO FR Polo Shirt – Professional alternative with collar
• PW3 FR HVO Sweatshirt – Additional warmth for cooler conditions
• PW3 FR HVO Coverall – Full body protection for heavy-duty work
• PW3 FR HVO Trousers – Lower body flame and arc protection
• PW3 FR HVO Jacket – Weather protection with FR performance
• Modaflame Knit FR Base Layers – Enhanced thermal protection