What are the international lighting standards for indoor ski resort lighting?

International lighting standards for indoor ski resorts primarily focus on the following aspects:

1. Illuminance levels: For alpine skiing, the recommended illuminance levels are:
• 100 lux for high-level competition
• 30 lux for medium-level competition
• 20 lux for training and recreational use 
• Standard compliance: The DIN 12193 standard "Light and lighting - Sports facility lighting" specifies requirements for ski slope floodlighting systems 
2. Additional factors to consider:
• Uniformity of lighting
• Color Rendering Index (CRI)
• Color Temperature (CCT)
• Glare reduction 
• LED lighting benefits: Long lifespan, low energy consumption, and minimal maintenance requirements make LED lighting a popular choice for ski resorts 
3. Indoor sports lighting: While not specific to ski resorts, general indoor sports lighting standards may also apply, ranging from 20 to 75 foot-candles depending on the level of competition 
4. It's important to note that specific standards may vary by country or region, and consulting local regulations is advised for precise requirements.