What is preservation


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An orientation to the key terms and concepts in the field of preservation

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What is preservation

  1. 1. Craig Fansler 2009
  2. 2. <ul><li>Preservation- prolong the existence of materials by protecting them. </li></ul><ul><li>Conservation- examination, documentation, treatment, and preventive care </li></ul><ul><li>Restoration- Hands-on treatment procedures </li></ul>
  3. 3. <ul><li>Brittle Books : Books printed from c. 1850-1900 were printed on very acidic wood pulp based paper. This paper is now deteriorating. </li></ul>
  4. 4. <ul><li>Arno River floods Florence-1966 </li></ul><ul><li>Hurricane Agnes-1972 </li></ul><ul><li>Water main break at Stanford University-1978 </li></ul><ul><li>These all helped develop best practices in recovery of library materials. </li></ul>
  5. 6. <ul><li>In the widest sense, preservation encompasses </li></ul><ul><li>activities that prevent damage to paper-based and media collections, such as proper housing, environmental control, and disaster planning </li></ul><ul><li>AND---activities such as treatment, replacement, or reformatting that address existing damage. </li></ul>
  6. 7. <ul><li>Environment – it is important to provide a moderate, stable temperature with low humidity. </li></ul><ul><li>Disaster Planning- having a plan to respond to water, fire or other disasters that might threaten your collection. </li></ul><ul><li>Security - Protecting your collection from theft or vandalism </li></ul><ul><li>Storage & Handling- use proper storage materials and materials handling measures </li></ul><ul><li>Reformatting & Digital Collections- Using digital imaging to create access copies of original materials for access. </li></ul>
  7. 8. <ul><li>Library Binding and In-House Repair- Damaged materials can be sent to a bindery for repair. Staff can be trained to perform basic repairs to books and paper materials. Special Collections materials should only be repaired by trained individuals and re-housing should be considered. </li></ul>
  8. 9. <ul><li>you cannot save everything </li></ul><ul><li>priorities must be set among collections (you must define your collection's strengths and concentrate on them) </li></ul><ul><li>every item may not need to be preserved (will a representative sample of certain materials be acceptable?). </li></ul><ul><li>Criteria for selection- condition/use; value or uniqueness; vulnerability due to deterioration or loss </li></ul>
  9. 10. <ul><li>Temperature and Relative Humidity- Fluctuations are damaging because of expansion and contraction which accelerates deterioration. Temperatures should not exceed 70 F. Relative humidity should be between 30-50% RH. </li></ul>
  10. 11. <ul><li>Soil pattern created from expansion and contraction </li></ul>
  11. 12. <ul><li>Light accelerates the deterioration of library materials. Light weakens paper and cloth by bleaching them and causing them to become brittle. </li></ul><ul><li>Storage: 1-5 foot candles </li></ul><ul><li>Display: 5-15 foot candles </li></ul><ul><li>OFTEN, we cannot control lighting conditions-so our job is to lessen the exposure of sensitive materials. </li></ul>
  12. 13. <ul><li>Most of us have little control over indoor air quality. The HVAC should remain on at all times to maintain stable conditions-this means the temperature should not be lowered on nights & weekends. Air filters should be changed regularly. </li></ul>Information source: Northeast Document Conservation Center