Temperature mapping report

PRE-REQUISTES PROGRAM:

Temperature-monitoring equipment, a monitoring device, a temperature data logger, or other such device that is suitable for its intended purpose should be available and used.

Document details:

The following documents should be verified and should be available before starting the temperature mapping.

Standard Operating Procedure of Temperature Mapping                               

Calibration Certificates of the measuring Instruments (Data logger) and NABL certificate

Training certificate of engineer of external agency                               

Training record of Person involve in temperature mapping study                              

Calibration details:

The details of the calibrated instruments should be recorded.

Calibration certificates should be attached with the report

VALIDATION/QUALIFICATION TEST PROGRAMME:

Identification of the area with rationale (Justification).

Storage area identification and justification

Selection of temperature mapping time and period:

The study should be long enough to show any possible daily trend, so it should not be less than 3 days (72 hours). Program the data loggers to acquire data every 10 minutes (Technical supplement to WHO TRS No. 961, 2011– Temperature mapping of storage areas) in three different seasons as given below:

Sr. No.           Season                      Consider Months

01                    Winter                        Nov- Feb. (with loaded condition)

02                    Summer                    Mar.-Jun. (with loaded condition)

03                    Rainy July-Oct.       (with loaded condition)

Establish Data Loggers/Sensor Selection Criteria:

Data Logger should be selected on the basis of following key features:  

Data Capacity: Data Capacity determines how much data it can store. More data storage capacity leads to store more data during its logging time.

Sample Rate: The frequency in which samples are taken. The loggers should be compatible to provide data on user selectable sample rates.

Monitoring Range and Accuracy: Data Loggers shall have NIST-traceable         3-point calibration certificate with a guaranteed error of not more than ±0.50C (for temperature) at each calibration point, so that all anticipated temperature extremes can be recorded.

Battery Life: Make sure the battery life is long enough to complete the mapping sessions.

Software: Make sure that the data logger & software is capable to provide the intended data.

Identification of number of Data Logger for Temperature Mapping with rationale (Justification):

Identify the location and number of Data Logger

To map the whole area.

Try to use the Data Logger as many as possible to ensure a good distribution.

Make sure, cover all storage areas and all storage levels, including top to bottom or bottom to top, right to left or left to right, front to rear or rear to front approach.

Considering the Locations near doors, walls and ceilings may be more sensitive to exterior conditions

Considering the area include rack, door, window, supply and return grill, sun facing wall with good distribution as well as obstruction of air.

Data logger should be located at every 5 - 10 meters (WHO TRS 961 Annexure-9).

If the ceiling height is 3.6 meters or less, position Data Logger directly above one another at high and low level (e.g. one Data Logger at floor level, 1.2 meters and one Data Logger at 3.0 meters) Or as per required.

If the ceiling height is greater than 3.6 meters, arrange Data Logger in vertical arrays at the bottom, middle and top of the space. For instance, for storage area six meters in height, three Data Loggers should be positioned in each grid location heights of 1.8    meters, 3.6 meters and 5.4 meters.

Number of required Data Logger for temperature mapping should be identified area wise.

Data Logger Location with sketch diagram:

As per the identified rationale Data Logger should be affixed according to the prepared sketch diagram.

Performance of the temperature mapping study:

Temperature mapping study should be performed by following performance test:

Temperature monitoring program for 72 Hours

Door opening study

Power failure study

Temperature Monitoring study:

Introduction:

Temperature mapping study is to evaluate the efficiency of area to maintain the temperature within the acceptable limit and identify the Hot Point.

Procedure:

The controlling unit of the respective area should be in running condition before one hour prior to execution of the study and ensure that the controlling unit should be in running condition up to the end of study. Controlling unit on time should be.

Set temperature in controlling unit, so as to get temperature 25±2°C in the area.

Configure the data-logger for recording frequency of every 10 minutes’ interval.

Place the calibrated data logger within the room as per the define location with proper label.

Start the Temperature mapping with 10-minute interval for the total 72 hours.

Mark the location in the area where data logger is to be placed (as per sketch diagram) for mapping purpose and mention the location number.

Affix the data logger at the locations identified for temperature mapping and review the start time & end time from data logger report.

After the programmed period, stop the Data Logger and remove the data logger from the affixed location and download the data. Take the print out of downloaded data.

Attach the downloaded printed data and graphical representation with report.

Collect the graphical representation from the data logger placed in the mapped area for verification of the uniformity of the temperature in the respective area and same shall attached with the report.

Acceptance criteria:

Limit: Temperature should not exceed beyond the limit i.e. 25±2°C.

No any excursion allowed beyond the limit i.e. temperature 25±2°C.

Identification of hot spot & Cold Spot:

Identification of hot & cold spot of the area and record the point.

Variation of temperature at a single point Location:

Variation of temperature at single point location should be identified.

Variation of temperature at different Location point:

Variation of temperature at different point location should be identified.

Length of time of any temperature excursions:

Length of time of any temperature excursion should be recorded.

Door open Study:

Introduction: This study is to evaluate the impact on temperature acceptance limit during opening of door in routine working.

Procedure:

Ensure that complete mapping has performed.

Open the door and wait for 1, 5, 10 & 15 minutes and record the observation i.e. door   opening and closing time.

The effect of the door opening on temperature shall be assessed and recorded after every 10sec. for 1, 5, 10 & 15 minutes.

Acceptance criteria: Temperature at all the selected locations should be 25±2°C.

Power Failure Study:

Introduction: Significance of power failure study is to evaluate the Intervention of the power failure on temperature of the room to maintain the temperature within the accepted limit once if power cut exists.

Procedure:

Power failure study to be carried out for 60 min.

Ensure that the completion of mapping time i.e. 72 hours.

Power failure challenge test should be performed by closing the controlling unit of the   area for 60 minutes.

Close the controlling unit and record the closing time.

Record the temperature at 10 min. interval for 60 min.

After 60 minutes start the controlling unit of the respective area and note    down the time.

After the programmed period, stop the Data Logger and remove the Data Logger from the affixed location and download / extract the data. Take the print out of the data extract / downloaded from the data-logger.

Acceptance criteria: Temperature at all the selected locations should 25±2°C.

REVALIDATION CRITERIA:

Revalidation shall be done in the following conditions

Change in the design / layout of the area.

Any change in the controlling unit, which can have an effect on the temperature of the area.

Any change in area configuration.