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December 21, 2014
 
 
 
 
 

WEST Environmental Standards

Certain preservation standards for Archive Holders must be met to ensure the continued preservation and archiving of the WEST volumes.

There are essentially two types of locations amongst WEST members where collections may be archived: long-term storage facilities and full-service libraries. WEST assumes that the long-term storage facilities meet specific standards for environmental control and collections access while full-service libraries meet some standards for short-term preservation but rarely meet the standards for long term preservation.

In the WEST collections model, specific requirements for environmental conditions are defined for each Archive Type.

Archive Type Environmental condition requirements
BRONZE Storage in a Library or Storage Facility
Fire detection system
Ability to maintain environment within 30-70% relative humidity and less than 80°F
SILVER Storage facility preferred; Library open stacks acceptable but secured location preferred
Ability to maintain environment within 30-70% relative humidity and less than 80°F
Annual Time Weighted Preservation Index of 50-75
Fire detection and suppression systems
GOLD Storage Facility preferred, or fully-enclosed and access-controlled area of Library
Ability to maintain environment within 30-70% relative humidity and less than 75°F
Annual Time Weighted Preservation Index of 70 or better, 100 preferred
Fire detection and suppression systems, with notification to responders
Light exposure limited to work hours only
PLATINUM Storage Facility Required
Ability to maintain environment within 30-60% relative humidity and less than 70°F
Annual Time Weighted Preservation Index of 70 or better, 100 preferred
Fire detection and suppression systems, with notification to responders
Constant light control, with lighting localized through sensors or timers