The Canadian Conservation Institute has an excellent section on developing a preservation framework for your library (aussi disponible ici en français).
Nine major types of threat to collections are identified: Direct Physical Forces; Thieves, Vandals, Displacers; Fire; Water; Pests; Contaminants; Radiation; Incorrect temperature; Incorrect relative humidity (RH).
You can then construct a matrix detailing how you will avoid, block, detect, respond and recover or treat any incidence of each threat:
The CCI has the following subdivisions for each threat:
- Agents of deterioration
- Building features – storage
- Building features – display
- Building features – transit
- Portable fittings – storage
- Portable fittings – display
- Portable fittings – transit
On their site, you can click on any of the cells in the matrix and read them individually, or purchase the whole diagram as a poster.