Notice bibliographique du personnel « Airtightness measurement of display cases and other enclosures »
- Titre
- Airtightness measurement of display cases and other enclosures
- Auteur ou éditeur
- Hagan, Eric
- Tétreault, Jean
- Lieu de publication
- Ottawa
- Série
- Technical bulletin; no. 38
- Numéro de la source
- (2022)
- Résumé
- The purpose of this Technical Bulletin is to explain the advantages of airtight enclosures for the display and storage of heritage collections and to outline a methodology for assessing their performance. Well-sealed enclosures produce tighter environmental tolerances, which can often enhance the preservation of vulnerable objects at a moderate cost. They provide a very effective and sustainable solution for the improved control of agents of deterioration, such as relative humidity (RH) and dust infiltration. A high level of airtightness will reduce inward and outward air movement through leakage points and limit gas diffusion through the enclosure envelope. This performance characteristic is often measured as the rate of loss of a tracer gas, most commonly carbon dioxide (CO2), from an enclosure. Over the past decade, CO2 monitoring data-loggers have become more affordable and easier to use for this task. As a result, determining the airtightness of display cases and other enclosures has become increasingly accessible for the heritage community.
- Detailed protocols are provided in this Bulletin for evaluating airtightness and for detecting points of leakage. The guidelines are useful for assessing the performance of existing enclosures and for understanding what to ask for, or expect, during the procurement of products such as display cases. In addition, several case studies present valuable perspectives regarding the use of airtightness values and the justification of the described protocols as well as various limitations and precautions. For example, a high level of airtightness may not always be appropriate for the preservation of objects, especially when sources of agents of deterioration are present or generated within the enclosure.
- Notes
- Also published in French: Mesure de l'étanchéité des vitrines d'exposition et d'autres contenants de protection
- Aussi publié en français: Mesure de l'étanchéité des vitrines d'exposition et d'autres contenants de protection
- Langue
- English = Anglais
- Sujet
- Cultural property - Conservation and restoration - Canada
- Hermetic sealing
- ISBN/ISSN
- 9780660425146
- 2562-0282
- Lien au document en anglais
- https://publications.gc.ca/site/eng/9.909008/publication.html
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- PER
- Clé
- 2157
- Collection
- Staff Bibliography