Generally, if the fire protection prevents the temperature from rising above 100 degrees f. most materials would not be adversely affected. As temperatures exceed 150 degrees f., most photographic products would be susceptible to damage. Between 100 degrees and 150 degrees, results would vary by product and condition. The lower tolerance of photographic materials for such temperatures should be kept in mind when selecting or designing fire resistant storage facilities. Similarly, expectations for survival through a fire should bare these considerations in mind.
Prevention is still the best protection.
The vault should have enough insulation to provide satisfactory temperature control all year round, prevent moisture condensation on the walls, and provide significant resistance to internal temperature increases in the event of a fire. For smaller collections, a fire cabinet or safe will provide increased protection in the event of fire. Examine any safe carefully before using it. Before storing any films or prints in this type of safe, seal them in moisture proof and photographically inert storage envelopes. One can also place film in cans and seal the cans with several layers of moisture-proof tape, such as vinyl electrical tape.