Mapping of Temperature. Temperature mapping is used to assess whether a storage space—such as refrigerators, freezers, rooms, warehouses, and incubators—can maintain a temperature within predetermined ranges. To ensure that the unit or space operates within pre-established set points, sensors are positioned throughout in pre-designated locations.

Warehouse – Method

In the warehouse, a predetermined number of loggers are positioned at key mapping locations. Usually, the temperature mapping takes place over a minimum of 48 hours.

As an example, the method used for a warehouse validation should take the following points into consideration:

1. Important mapping points should include the surrounding unconditioned areas and the outside environment of the measured area.

2. Sample rates ought to be taken every thirty minutes.

3. It could be essential to split a vast region or space into sections and arrange the designated number of loggers/sensors in a ‘X’ layout.

4. One possible examination of the mapping activities’ data is a gap analysis or conformance evaluation.

5. Every movement and event, including those that are necessary for warehouse operations, needs to be documented.

6. Documentation of all test findings, observations, assessments, and suggestions is required.

At least once a year is the minimum frequency of temperature mapping. Further temperature mapping might be necessary for conditions like the ones listed below:

• Change of temperature settings
• Changes made to the storage capacity
• New monitoring system
• New equipment installed that may impact the temperature and relative humidity
• If the continuous temperature mapping activities are interrupted (e.g. due to power failures or any event that may impair the continuous data collection)
• Extreme weather changes
• Warehousing standards or quality management system changes
• Any other changes made that could affect temperature/humidity