Introduction to Photoluminescent Signs

Photoluminescent signs are essential safety elements that provide visibility during power outages and emergency situations. These signs absorb ambient light and emit a visible glow in darkness, guiding occupants to safety exits and emergency equipment.

Expected Lifespan

General Lifespan: 7-10 Years

Quality photoluminescent signs typically last between 7 and 10 years when properly maintained. Several factors influence actual lifespan:

Quality of photoluminescent materials used
Environmental conditions (humidity, temperature)
Exposure to UV light and direct sunlight
Cleaning practices and frequency
Physical wear and handling

Important: Signs exposed to harsh conditions may require earlier replacement to maintain safety standards.

Signs of Aging

Watch for these indicators that replacement may be needed:

Reduced glow intensity in darkness
Visible yellowing or discoloration
Surface scratches or damage
Peeling or delamination
Fading of printed information

Regular Maintenance Requirements

Cleaning Procedures

Proper cleaning maintains optimal luminescent performance:

Use soft, lint-free cloths
Apply mild, non-abrasive cleaning solutions
Avoid harsh chemicals and solvents
Clean in circular motions to prevent scratching
Allow complete drying before reinstallation

Recommended Cleaning Frequency

High-traffic areas: Monthly cleaning
Standard locations: Quarterly cleaning
Protected areas: Semi-annual cleaning

Note: Dust and dirt accumulation significantly reduces light absorption and emission capabilities.

Visual Inspections

Monthly Inspections

Conduct brief visual checks monthly:

Verify signs are properly positioned
Check for physical damage
Ensure mounting is secure
Confirm visibility from appropriate distances

Quarterly Inspections

More detailed quarterly assessments should include:

Darkness testing to verify glow intensity
Measurement of luminescence levels if equipment available
Documentation of any deterioration
Comparison with new reference signs

Annual Professional Inspections

Schedule comprehensive annual reviews:

Professional luminescence measurements
Compliance verification against standards
Replacement recommendations
Updated documentation and certifications

UNE 23035 Compliance

Standard Overview

UNE 23035 establishes requirements for photoluminescent safety signs in Spain. Compliance ensures:

Minimum luminescence levels at specified times
Proper sizing and positioning
Appropriate symbols and messaging
Quality material specifications

Key Compliance Points

Part 1: Conditions for Luminescent Materials

Afterglow requirements at 10 and 60 minutes
Color coordinates specifications
Resistance to environmental factors

Part 2: Measurement Methods

Standardized testing procedures
Equipment calibration requirements
Documentation protocols

Part 3: Signage Requirements

Sign dimensions based on viewing distance
Placement height and spacing
Symbol standardization

Part 4: Conditions for Installation

Minimum ambient lighting for charging
Escape route marking requirements
Emergency equipment identification

Maintaining Compliance

To ensure ongoing compliance:

Keep purchase and installation records
Document all inspections and maintenance
Retain manufacturer certifications
Schedule regular compliance audits

Replacement Planning

Proactive Replacement

Plan sign replacements before failure:

Track installation dates for all signs
Budget for replacements at 7-year intervals
Stock commonly used sign types
Establish relationships with certified suppliers

Emergency Replacement Protocol

Have procedures ready for urgent replacements:

Maintain emergency stock of critical signs
Know your supplier’s lead times
Document temporary measures if needed
Prioritize high-traffic escape routes

Conclusion

Proper maintenance of photoluminescent signs is essential for safety and compliance. Regular cleaning, systematic inspections, and timely replacements ensure these critical safety devices perform when needed most.