SOP For Bowie Dick Test

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1.0 Objective:

To lay down a procedure for bowie dick test

2.0 Scope:

This SOP is applicable for Bowie Dick test in pharmaceutical plant.

3.0 Responsibility:

Production Officers /Executive shall be responsible for follow the procedure mentioned in this SOP.

4.0 Accountability:

Production Head shall be accountable for the compliance of SOP.

5.0 Abbreviations

SOP : Standard Operating Procedure

MMI : Man Machine Interface

PLC : Programmable Logic Controlle

6.0 Procedure

6.1 Switch ON the machine with the key.

6.2 Ensure that autoclave chamber is dry and temperature is ambient.

6.3 Check the cleaning of chamber and all around the machine.

6.4 Check the availability of soft water, pure steam, plant steam and compressed air.

6.5 Check the pressure of compressed air should not be less then 6.0 kg/cm².

6.6 Open the valve of plant steam supply line and ensure that the pressure of plant steam supplied to the autoclave in the pressure gauge is not less than 2 kg/cm².

6.7 Open the valve on pure steam supply line and ensure that the pressure of pure steam supplied to the autoclave in the pressure gauge is Not Less Than 2 kg/cm².

6.8 Load the bowie dick test kit in the Bung processor cum Steam Sterilizer (Keep the kit at 200mm from the bottom of chamber) as per validated loading pattern.

6.9 Press the “door close switch” to close the door.

6.10 Check the pressure of following mentioned below on front of the panel :-

  • Jacket Pressure : 0.0 Kg/cm²
  • Sterile side gasket : 3.0 Kg/cm²
  • Non sterile gasket : 3.0 Kg/cm²
  • Chamber pressure : 0.0 Kg/ cm²

6.11 Select the Cycle No.on the MMI of the Bung processor cum Steam Sterilizer. Check and verify the standard parameter of bowie dick test on man machine interface (MMI)  as per mentioned below:

6.11.1 Set Parameter:

Sr.No Parameters Set value of cycle
1 Pre Vacuum -0.500 Bar
2 Pre pressure 0.500 Bar
3 No of pre pulses 3 Nos
4 Heat up 1 110.0 °C
5 Heat up Hold 1 5 min
6 Heat up 2 115.0 °C
7 Heat up Hold 2 3 min
8 Heat up 3 118.0 °C
9 Heat up Hold 3 2 min
10 Heat up control Band 0.4 °C
11 Sterilization Hold temperature 122.0°C
12 Sterilization Hold time 1020 seconds
13 Temperature control Band 0.2 °C
14 Over shoot temperature 124.0 °C
15 Sterilization stop temperature 120.9 °C
16 Sterilization Reset temperature 120.8 °C
17 Process End pressure -0.050 Bar
18 Exhaust ON 5 sec
19 Exhaust OFF 55 sec

6.12 On completion of the sterilization according to the set parameter, indicator of “process end” will glow on sterile side door and the process will stop, displaying the message ‘Process End’ on MMI.

6.13 Check the cycle graph for Bowie Dick test load for temperature and time during the sterilization hold.

6.14 Check the uniform color of Bowie dick paper is dark brown after the cycle.

6.15 If the graph does not match the cycle will be considered invalid. Repeat the Bowie Dick test. Inform the deviation to the Quality Assurance Department. Carry out the further processing as per the suggestions from the quality assurance.

6.16 Record the cycle details of Operation in the Equipment Logbook as per SOP and get it checked by the Concerned Supervisor / Officer

7.0 Forms and Records (Annexures)

Not Applicable

8.0 Distribution

Master copy –  Quality Assurance

Controlled copies- Quality Assurance, Production, Quality Control

9.0 History

Date Revision Number
Reason for Revision
00 New SOP

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