Cool Room Temperature Mapping
This year we have seen more extreme temperatures than ever before. Now is a great opportunity to ensure that your warehouse, fridges and freezers stay within the specified temperature range on these very hot days. As Good Manufacturing Processes (GMP) necessitate robust temperature control and compliance reporting, conducting temperature mapping of these areas on extremely hot or cold days will allow your storage facilities to be tested at their limits.
Why Do Temperature Mapping?
The simple fact is that temperatures within a three-dimensional space can vary. For example, temperatures near doorways or openings can be warmer, and temperatures in the corners of a cool room or at the top of a storage stack near the roof can vary by 3 or 4 degrees. Conducting temperature mapping will alert operators of ‘hot and cold spots’ or areas where there are variances in temperatures, so goods that are less temperature sensitive can be stored in those areas or those areas avoided.
Clause 3.19 of the PIC/S GMP guide states:
“Storage areas should be designed or adapted to ensure good storage conditions. In particular, they should be clean and dry and maintained within acceptable temperature limits. Where special storage conditions are required (e.g. temperature, humidity) these should be provided, checked and monitored.“
UK Guidance on Wholesale Distribution Practice, says:
“Large commercial refrigerators and walk-in cold rooms should be monitored with an electronic temperature-recording device that measures load temperature in one or more locations, depending on the size of the unit. Portable data-loggers that can be downloaded onto a computer may be used instead of a fixed device. Records should be checked daily. Internal air temperature distribution should be mapped on installation in the empty and full state and annually thereafter under conditions of normal use. Products should not be stored in areas shown by temperature mapping to present a risk (e.g. in the airflow from the refrigeration unit). Condensate from chillers should not be collected inside the unit.
All warehouses should be temperature mapped to determine the temperature distribution under extremes of external temperature. Mapping should be repeated every two to three years or after any significant modification to the premises, stock layout, or heating system.”
Conducting temperature mapping every few years will ensure your cool rooms and warehouses adhere to world best practice in terms of cold chain compliance and temperature control.
What’s the Difference Between Temperature Mapping and Temperature Calibration?
Calibration of temperature monitoring equipment is a task completed on a regular basis to ensure that the temperature loggers are accurately measuring the temperature. Temperature monitoring equipment calibration simply means ensuring that the temperature recording in the exact location of the monitors is accurate.
Temperature mapping, on the other hand, records the temperature in various locations over a set time period – e.g. 24 hours to 168 hours (a week). There are many more temperature recording locations in a temperature mapping exercise than there are for temperature recording equipment calibration.
The selected days and times and the number of temperature testing points as well as the location of those data loggers are all factors to consider when undertaking a temperature mapping exercise. This is where the expertise of temperature mapping specialists can be invaluable.
Costs of Temperature Mapping?
The costs vary according to the size of the warehouse and the number of temperature data loggers required but a cost-effective solution is to rent pre-calibrated temperature mapping kits. Temperature loggers are strategically placed where advised and the temperature data is collected. Data loggers are then returned to CoolPac for analysis and reporting.
For more information contact CoolPac on 1300 266 555.