One of the strictest levels of environmental control is needed to produce sterile pharmaceuticals in a manufacturing facility. The following types of products need to be made in an area where there is limited risk of contamination: injection drugs, medications intended for the eyes and sterile powder products. If any product has even a very small amount of particles or bacteria in it, it can affect the quality of the product and/or result in an unsafe product for the patient.
To provide consistent assurances that sterile manufacturing will meet required regulatory standards, sterile manufacturing cleanrooms must be qualified. The qualification of the sterile area provides proof to the regulating authorities that the cleanroom and its supporting systems are operating as they should, as defined in their specifications. Cleanroom qualification is considered a key component of the Good Manufacturing Practices by regulatory authorities.
1. Grade A
2. Grade B
3. Grade C
4. Grade D
Grade A areas are the highest level of cleanliness in a cleanroom environment (i.e., is an aseptic area).
The basis for classifying a specific manufacturing environment into one of these four classifications is determined by:
- Airborne Particulate (Contamination) Levels
- Microbial Limits
The sterile area can be qualified by applying following tests.
- Measure airflow in supply and returned duct
- Air volume to meet the designed required
- Measure air velocity at the filter face using a calibrated anemometer.
- Measure at numerous sites to provide one measurement for every 0.37 m2 filter area.
- For LAF air flows uniformity to be 0.45 m/sec ± 20%.
- For other filters, airflow will be checked and ensure that airflow shall not exceed filter rating and uniformity shall not exceed designed specification.
In the microbiological area in QC department, a minimum 20-air changes will be maintained with 15 Pascal pressure differentials to the adjacent area.
- Visualize the air patterns at numerous points in the room using smock generate or Titanium Tetrachloride sticks.
- Smock should flow from “clean” area to “ less clean” area quickly and smoothly.
- To check the interference due to turbulence eddies in unidirectional airflow area, like sampling booth, dispensing booth and under laminar airflow in the microbiological area.
- This test is used to check that there is no the dead space in the critical area.
- Sample stream challenge with a photometer and set the instrument for this challenge:
Linear readout : 100% deflection
Logarithmic readout: 1 x 104
- To check the filter surface and seals with photometer for leak test to
Linear ; < 0.01%
Logarithmic: One division
Alternatively
- Measure the “normal” upstream particulate challenge to HEPA filter using particle counter.
- Scan the filter face and seals with particle counter for the leak test.
- >10-4 of upstream
- Not more than 3% area of the filter should not be repaired by the sealant.
In general, relative pressurization shall be set up to reduce airborne particulates and vapors from passing from an open Level 3 Protection processing space to another incompatible Level 3 Protection space. Conversely, pressurization should be set up to reduce airborne particulates from passing from the outdoors, above ceilings, mechanical or similar spaces and from Level 1 Protection spaces to Level 3 Protection processing spaces. Airlocks or buffer zones are used to separate production areas from adjacent common corridor/staging areas, non- classified areas.
To provide protection, when the doors are closed, room pressure shall be demonstrably positive or negative. Airlocks or buffer zones will provide additional protection if only one door is open at a time. Pressured airlocks may have either positive or negative relative pressure, depending on what is best for the particular situation.
Airflow variations from dust collecting, vacuum or process systems and their effect on space pressurization shall be demonstrated for in the operation of the HVAC system.
Prior to air balancing, rooms shall be inspected for obvious leakage and for architectural integrity. Leakage may have a significant effect on the room air balance and/or upon the ability for particulates to enter or leave the space.
- Operate the HVAC system of the sterile area and release smoke into the unidirectional air stream at selected sites.
- Measure the deviation of smoke stream from vertical or horizontal over 90 cm from the flow path.
- To demonstrate that deviation in parallelism airflow shall not greater than 14º.
Cross-contamination can originate from both the internal environment and outside the OSD facility. In all air handling systems, the filtration should be evaluated for the adequate assistance of outdoor particulates.
The HVAC system was designed to demonstrate the Class - D requirement At Rest or As-Built level and it will demonstrate at time qualification activities of HVAC system. Select any suitable particle counter instrument and set it at an air flow rate of 1 cubic feet per minute, carry out the particle count at minimum 10 different locations in the room which are representative of the room for one minute at each location at 3 feet height from the floor. It must cover the central location of personal traffic. Note down the number of particles of size equal to 0.5 microns and larger and number of particles of size equal to 5 microns and larger at each designated location.
Personnel consideration in temperature consideration: The USP excursion limits for finished product storage are 59°F - 86°F (15°C - 30°C) with a customary CRT (Controlled Room Temperature) working environment of 68°F - 77°F (20°C - 25°C) and a maximum MRT (Mean Kinetic Temperature) of 77°F (25°C). Existing HVAC system had designed for 24 ± 2°C to all critical area in manufacturing, warehouse and Quality Control department.
Process related consideration in temperature specification: In some area due to the presence of heat generated equipment the temperature efficiency will be demonstrated in the compliances of the designed criteria at the time of the qualification exercise. In some product, in-processing temperature requirement shall be maintained and demonstrated 18°C ± 2°C. Actual product temperature monitoring (whenever required) will be performed instead of room temperature monitoring.
Exhaust Consideration in Temperature Specification: Wherever the exhaust of the large quantity of the air from the critical area requires a large volume of makeup air to be introduced into the in-process area to replace it. This replaces air shall be conditioned prior to introduction in the in-process area.
Air Flow Pattern Consideration in Temperature Specifications: In the mixed airflow critical area, a pocket of stagnant air may develop. Temperature gradients in excess of those specified can result, air inlet and outlet are not properly spaced. Proper mixing of conditioned air with re-circulated air and effective airflow pattern is required to demonstrate the specified zoning temperature.
- Measure the particle counts at room air return outlets and establish “At rest” level.
- Generate the smoke at air inlets to room until particle counts at outlet is high and constant and switch of the smoke generator.
- Record the particle counts each minute until counts return “At Rest” level.
- Recovery time should be approximately 15-20 minutes (EU GMP guide Annex-1)
Following the Standard Operating Procedure for microbiological evaluation of microbiology laboratory, and Procedure for microbiological evaluation of manufacturing area will do microbiological evaluation of the critical area of the facility.
Air Active Sampling: following the procedure described in the Validation Protocol for HVAC System in sterile area will do Active sampling. Defining the location of sampling in the protocol will do sampling and minimum 1 cubic litre air will be taken from each location. Average total viable count per cubic meter of air should comply with fallowing alert and action level to define in the validation protocol. Incubation of the media for bacteria and fungi evaluation will be done up to required time period and at defined temperatures. A positive and negative control test will be conducted to confirm that adequate test procedure has been fallowed.
Air Passive Sampling: following the procedure described in the Validation Protocol for HVAC System will do passive sampling. Exposure of 90 mm settle plates will be done for 4 hours by defined the location of sampling in the validation protocol will do sampling. Average total viable count per plate for 4 hours of air should comply with fallowing alert and action level to define in the validation protocol.
Surface Sampling: Surface sampling will be conducted by using the swab or contact plat, collecting the microbiological contamination from approximately 25 cm2 surface from at numerous defined locations in the Validation Protocol for HVAC System in sterile area. Average total viable count should comply with alert and action limits defined in the validation protocol for sterile area.
A cooling coil type of dehumidification will be applied for maintaining the humidity in the required area. Using drain tray and pipeline to make assure not to stagnant water in AHU will drain the condensed water out.
Relative humidity will be checked by using calibrated humidity meter from different location of Classified, Unclassified area as defined in the Validation Protocol for sterile area. Humidity should not more than defined alert and action limits in validation protocol for sterile area.
Noise level will be check by using calibrated Octave Band analyzer or any other similar equipment and measure the noise levels at defined location to confirm the that noise level is within limits as defined in the validation protocol for sterile area.
(a) The scope of the qualification
(b) The methods of testing
(c) The criteria for acceptance
(d) The assigned responsibility
- Airborne particles
- Microbial contamination
- Cleanliness of surfaces
Timely monitoring of environmental conditions and trending of data provides for the early identification of potential contamination issues and trends.
- Designed properly
- Qualified and monitored
- Maintained within a validated state
- Documented properly
Failure to maintain a qualified clean room may result in severe negative regulatory actions.
The qualification of sterile areas is one of the most important processes within Pharmaceutical Manufacturing as it evaluates the performance of cleanrooms to provide the correct environmental conditions for Aseptic Operations on a continual basis, while also minimizing contamination risks through systematic qualification, testing and monitoring, resulting in product sterility assurance.
Through following all regulatory requirements, employing the necessary level of qualification procedures and having ongoing monitoring of the sterile manufacturing process organizations can meet their compliance requirements, ensure product quality and guarantee patient safety. In sterile manufacturing, cleanroom qualification is considered not only to be an important regulatory requirement, but more significantly, an essential element of contamination control.
What is Sterile Area Qualification?
Sterile Area Qualification is the process of documenting the validation of the cleanroom environment so that it has shown that it works as intended and that the appropriate levels of cleanliness have been maintained throughout the manufacturing process. The SAQ process includes evaluating the following:- Air Quality
- Performance of the HVAC system
- Pressure differential between rooms
- Airflow patterns in the room
- Temperature and relative humidity in the cleanroom
- Microbial and particulate control/monitoring
Importance of Cleanroom Qualification
Cleanrooms are specifically designed to reduce contamination from physical or chemical sources. If a cleanroom is not properly qualified before starting a sterile manufacturing process, there is no proof to the manufacturer that the cleanroom will adequately support the sterilization of their products. Qualification can help:- Provide assurance regarding the sterility of the manufactured product
- Keep the cleanroom environment more reliably controlled
- Demonstrate compliance with applicable regulations
- Minimize contamination risks
- Provide ongoing support for successful aseptic processing
Cleanroom Classification
The cleanliness level required in aseptically manufactured product locations is how sterile manufacturing locations are defined and classified. The following are the most common classifications used to assign various manufacturing environments:1. Grade A
2. Grade B
3. Grade C
4. Grade D
Grade A areas are the highest level of cleanliness in a cleanroom environment (i.e., is an aseptic area).
The basis for classifying a specific manufacturing environment into one of these four classifications is determined by:
- Airborne Particulate (Contamination) Levels
- Microbial Limits
Components of a Sterile Area
The components of a sterile environment consist of various systems used to accomplish and maintain cleanroom conditions. The major components of a Sterile Manufacturing Facility include the following:- Integrated HVAC System
- High-Efficiency Particulate Air (HEPA) Filters
- Laminar Airflow System
- Cleanroom Walls and Ceilings
- Pass-Throughs and Airlocks
- Environmental Monitoring System
Stages of Cleanroom Qualification
The steps for qualifying a clean room are based on a total lifecycle approach.1. Design Qualification (DQ)
Design qualifications will ensure the cleanroom is designed to meet both user requirements and regulatory requirements. Review should include:- HVAC design
- Material Flow
- Personnel Flow
- Air Classification
- Pressure Cascade
2. Installation Qualifications (IQ)
Installation qualifications will ensure that all systems and equipment have been installed according to the approved specifications. installation qualification activities should include but are not limited to:- HEPA Filter install verification
- Equipment id verification
- Utility verification
- Instrument calibration checks
3. Operational Qualification (OQ)
Operational qualifications will verify that the cleanroom systems are operating as intended during defined operating conditions. OQ will include:- Testing airflow velocity
- Differential pressure
- Temperature and humidity
- Alarm system activation
- Air changes per hour
4. Performance Qualification (PQ)
Performance qualifications will demonstrate that the cleanroom is performing effectively during routine operations by testing both at-rest and operational conditions to verify that the cleanroom remains compliant during actual manufacturing activities.Tests Conducted During Cleanroom Qualification
Sterile area qualification and HVAC system qualification are two different things but most of the tests are same because HVAC system is qualified by its performance as the quality of the area. Qualification document of the HVAC system and the sterile area should be prepared separately.The sterile area can be qualified by applying following tests.
1. Air Supply Capacity
The purpose of this test to demonstrate that the air system is balanced and capable of delivering sufficient air volumes (as per design) to maintain required air change (NLT 20) in the defined area. The air capacity will be demonstrated by following the procedure of:- Measure airflow in supply and returned duct
- Air volume to meet the designed required
2. Air Velocity/Uniformity
The purpose of this test to demonstrate that the air system is balanced and capable of delivering sufficient air volumes to maintained a minimum cross-section velocity under HEPA terminal filter modules. This test also meant to verify air velocities before the air encounters an obstruction as well as to verify horizontal/vertical air velocity components at the point the air reaches an obstacle or a surface one-meter above the floor. The air velocity/Uniformity will be demonstrated by following the procedure of:- Measure air velocity at the filter face using a calibrated anemometer.
- Measure at numerous sites to provide one measurement for every 0.37 m2 filter area.
- For LAF air flows uniformity to be 0.45 m/sec ± 20%.
- For other filters, airflow will be checked and ensure that airflow shall not exceed filter rating and uniformity shall not exceed designed specification.
3. Air Change
There is no minimum GMP requirement for air changes per hour. Airflow into and out of a space should be based on providing the required cooling, heating, relative humidity, pressurization, particulate control, dilution ventilation, recovery time from an upset (spill or dust emission) condition. These factors generally result in air change rates of between 4 and 20. However, higher rates have also been used successfully. An adequate number of fresh air quantity (as per designed) will demonstrate at the time qualification of the HVAC facility.In the microbiological area in QC department, a minimum 20-air changes will be maintained with 15 Pascal pressure differentials to the adjacent area.
4. Air Flow Pattern
To determine the airflow interaction with machinery and equipment, in the critical area protected by a unidirectional flow the clean air system in the sterile area. This test determines the airflow pattern at the Rest Test Phase to check the airflow pattern from clean area to less clean area. This test shall be demonstrated by:- Visualize the air patterns at numerous points in the room using smock generate or Titanium Tetrachloride sticks.
- Smock should flow from “clean” area to “ less clean” area quickly and smoothly.
- To check the interference due to turbulence eddies in unidirectional airflow area, like sampling booth, dispensing booth and under laminar airflow in the microbiological area.
- This test is used to check that there is no the dead space in the critical area.
5. HEPA Filter Integrity Test
All HEPA filter installed in the facility will test for filter integrity test and filter leak test at the At-Rest Phase by using PAO (Poly-alpha-olefin) aerosol into supply duct to the HEPA filter. The following test will be allowed to demonstrate the filter integrity and leak test.- Sample stream challenge with a photometer and set the instrument for this challenge:
Linear readout : 100% deflection
Logarithmic readout: 1 x 104
- To check the filter surface and seals with photometer for leak test to
Linear ; < 0.01%
Logarithmic: One division
Alternatively
- Measure the “normal” upstream particulate challenge to HEPA filter using particle counter.
- Scan the filter face and seals with particle counter for the leak test.
- >10-4 of upstream
- Not more than 3% area of the filter should not be repaired by the sealant.
6. Pressurization Test
There is no quantified (numerical) requirement for relative pressurization (accept microbiological lab in QC area). The velocity and direction of airflow between spaces should be adequate to reduce the counter flow of airborne particulates or vapor contaminants for spaces where airborne cross-contamination is a concern.In general, relative pressurization shall be set up to reduce airborne particulates and vapors from passing from an open Level 3 Protection processing space to another incompatible Level 3 Protection space. Conversely, pressurization should be set up to reduce airborne particulates from passing from the outdoors, above ceilings, mechanical or similar spaces and from Level 1 Protection spaces to Level 3 Protection processing spaces. Airlocks or buffer zones are used to separate production areas from adjacent common corridor/staging areas, non- classified areas.
To provide protection, when the doors are closed, room pressure shall be demonstrably positive or negative. Airlocks or buffer zones will provide additional protection if only one door is open at a time. Pressured airlocks may have either positive or negative relative pressure, depending on what is best for the particular situation.
Airflow variations from dust collecting, vacuum or process systems and their effect on space pressurization shall be demonstrated for in the operation of the HVAC system.
Prior to air balancing, rooms shall be inspected for obvious leakage and for architectural integrity. Leakage may have a significant effect on the room air balance and/or upon the ability for particulates to enter or leave the space.
7. Unidirectional Airflow
A unidirectional air flow (wherever applicable) will be demonstrated to check the interference due to turbulence airflow in the area that laminarity of the system (like dispensing booth, sampling booth) not disturbed. The Unidirectional Air Flow will be demonstrated by the following test:- Operate the HVAC system of the sterile area and release smoke into the unidirectional air stream at selected sites.
- Measure the deviation of smoke stream from vertical or horizontal over 90 cm from the flow path.
- To demonstrate that deviation in parallelism airflow shall not greater than 14º.
8. Particle Count
There are no particulate classification requirements for OSD facilities such as those that exist for aseptic processing.Cross-contamination can originate from both the internal environment and outside the OSD facility. In all air handling systems, the filtration should be evaluated for the adequate assistance of outdoor particulates.
The HVAC system was designed to demonstrate the Class - D requirement At Rest or As-Built level and it will demonstrate at time qualification activities of HVAC system. Select any suitable particle counter instrument and set it at an air flow rate of 1 cubic feet per minute, carry out the particle count at minimum 10 different locations in the room which are representative of the room for one minute at each location at 3 feet height from the floor. It must cover the central location of personal traffic. Note down the number of particles of size equal to 0.5 microns and larger and number of particles of size equal to 5 microns and larger at each designated location.
9. Temperature
Room temperature may be a critical parameter for both open and closed operations. Most products, materials and processes can handle a wide range in temperature. However, the width of this range decreases as the exposure time increases. For example, the contents of a large processing vessel would typically not change temperature measurably during typical sampling activities. If product or material is stored or exposed for significant periods, however, (such as in a non-temperature controlled blender) then significant effects may occur.Personnel consideration in temperature consideration: The USP excursion limits for finished product storage are 59°F - 86°F (15°C - 30°C) with a customary CRT (Controlled Room Temperature) working environment of 68°F - 77°F (20°C - 25°C) and a maximum MRT (Mean Kinetic Temperature) of 77°F (25°C). Existing HVAC system had designed for 24 ± 2°C to all critical area in manufacturing, warehouse and Quality Control department.
Process related consideration in temperature specification: In some area due to the presence of heat generated equipment the temperature efficiency will be demonstrated in the compliances of the designed criteria at the time of the qualification exercise. In some product, in-processing temperature requirement shall be maintained and demonstrated 18°C ± 2°C. Actual product temperature monitoring (whenever required) will be performed instead of room temperature monitoring.
Exhaust Consideration in Temperature Specification: Wherever the exhaust of the large quantity of the air from the critical area requires a large volume of makeup air to be introduced into the in-process area to replace it. This replaces air shall be conditioned prior to introduction in the in-process area.
Air Flow Pattern Consideration in Temperature Specifications: In the mixed airflow critical area, a pocket of stagnant air may develop. Temperature gradients in excess of those specified can result, air inlet and outlet are not properly spaced. Proper mixing of conditioned air with re-circulated air and effective airflow pattern is required to demonstrate the specified zoning temperature.
10. Recovery Test
To determine the capabilities of the system to recover from internally generated from contamination within reasonable elapsed time period. Recovery test will be demonstrated by following the test of:- Measure the particle counts at room air return outlets and establish “At rest” level.
- Generate the smoke at air inlets to room until particle counts at outlet is high and constant and switch of the smoke generator.
- Record the particle counts each minute until counts return “At Rest” level.
- Recovery time should be approximately 15-20 minutes (EU GMP guide Annex-1)
11. Microbiological Counts
Testing will be performed for a period of one year routine production in accordance with the sampling plan. Sampling will be performed in accordance with the procedures detailed in Validation Protocol for sterile area. The testing regime for the Environmental Monitoring will be defined in Validation Protocol. Throughout the Performance Qualification period regular project team meetings will be held to discuss the testing results. Should any failures occur during the Operation Qualification stage additional samples will be taken to ascertain the cause and extent of the contamination. Corrective action will be instigated on a case-by-case basis.Following the Standard Operating Procedure for microbiological evaluation of microbiology laboratory, and Procedure for microbiological evaluation of manufacturing area will do microbiological evaluation of the critical area of the facility.
Air Active Sampling: following the procedure described in the Validation Protocol for HVAC System in sterile area will do Active sampling. Defining the location of sampling in the protocol will do sampling and minimum 1 cubic litre air will be taken from each location. Average total viable count per cubic meter of air should comply with fallowing alert and action level to define in the validation protocol. Incubation of the media for bacteria and fungi evaluation will be done up to required time period and at defined temperatures. A positive and negative control test will be conducted to confirm that adequate test procedure has been fallowed.
Air Passive Sampling: following the procedure described in the Validation Protocol for HVAC System will do passive sampling. Exposure of 90 mm settle plates will be done for 4 hours by defined the location of sampling in the validation protocol will do sampling. Average total viable count per plate for 4 hours of air should comply with fallowing alert and action level to define in the validation protocol.
Surface Sampling: Surface sampling will be conducted by using the swab or contact plat, collecting the microbiological contamination from approximately 25 cm2 surface from at numerous defined locations in the Validation Protocol for HVAC System in sterile area. Average total viable count should comply with alert and action limits defined in the validation protocol for sterile area.
12. Relative Humidity
Room relative humidity (RH) may affect exposed product or materials that are sensitive to air moisture. RH levels generally have negligible effect on aqueous product. However, liquid product can lose moisture to a low humidity room over an extended period. HVAC system in sterile area had designed to maintained the humidity Not more than 55% Humidity level will be maintained wherever product comes in the direct contact of the product.A cooling coil type of dehumidification will be applied for maintaining the humidity in the required area. Using drain tray and pipeline to make assure not to stagnant water in AHU will drain the condensed water out.
Relative humidity will be checked by using calibrated humidity meter from different location of Classified, Unclassified area as defined in the Validation Protocol for sterile area. Humidity should not more than defined alert and action limits in validation protocol for sterile area.
13. Noise Level
High level of noise may be present in the facility due to operation of the variety of equipment like high static exhaust fan, vacuum pump, centrifugal pump etc. OSHA requires hearing conversation program when personnel noise exposure exceed an eight hours time weighed average sound level of 85 dB. HVAC system has designed not to generate more than 70 dB noises in critical area during its normal operation.Noise level will be check by using calibrated Octave Band analyzer or any other similar equipment and measure the noise levels at defined location to confirm the that noise level is within limits as defined in the validation protocol for sterile area.
14. Vibration
The HVAC system of the facility has design to generate a minimum vibration during it full-scale operation. Vibration level generate by HVAC system will be checked by using calibrated accelerometer or any other similar equipment and measure the vibration levels at defined location to confirm the that vibration level is within limits as defined in the validation protocol.Procedure for Sterile Area Qualification
The qualification process follows a systematic approach consisting of the following:Step 1: Create a Qualification Protocol
The qualification protocol sets out:(a) The scope of the qualification
(b) The methods of testing
(c) The criteria for acceptance
(d) The assigned responsibility
Step 2: Review Design Documents Before the Qualification
Before performing the qualification testing, review the engineering drawings of the facility and the HVAC designs.Step 3: Verify Proper Installation
Verify that all instruments, equipment and filters have been properly installed.Step 4: Perform Operational Testing
Test the HVAC and environmental control system under actual operational conditions.Step 5: Perform Performance Testing
Conduct performance testing by determining the number of particles and conducting microbial monitoring, smoke studies and recovery testing.Step 6: Compare Results with the Acceptance Criteria
All results should be compared to a predetermined limit so that discrepancies can be addressed.Step 7: Document and Report the Qualification
Document all activities and results of the qualification testing in a qualification report.Acceptance Criteria
Acceptance Standards are based on Clean Room Classifications as well as any regulatory body requirements. Here are some standards and classifications commonly used:- Particle Count Limitations
- Microbial Limitations
- Differential Pressure Range
- Air Flow Velocity Range
Requalification of Sterile Areas
Sterile areas must be requalified on a periodic basis to ensure continued compliance with regulations. Causes for requalifying may be:- Modification of HVAC system
- Change to HEPA filters
- Changes to the facility
- Repeated failure of environmental monitoring
Common Issues with Clean Room Qualification
Organizations may have difficulties qualifying a clean room due to many different reasons. Common issues include:- HEPA filter leaks
- Airflow turbulence
- Instability of pressure
- High particle counts
- Inconsistent microbial monitoring results
Sterile Area Qualification Best Practices
The following recommended best practices are suggested for sterile area qualification:- Utilize qualified personnel for testing
- Conduct ongoing environmental monitoring
- Maintain HVAC Equipment
- Conduct routine smoke studies
- Enforce appropriate gowning practices
Role of Environmental Monitoring
The function of environmental monitoring is to provide continuous assessment of the environmental conditions within the clean room and to support the qualification of the clean room. Environmental monitoring often includes the following elements:- Airborne particles
- Microbial contamination
- Cleanliness of surfaces
Timely monitoring of environmental conditions and trending of data provides for the early identification of potential contamination issues and trends.
Regulatory Expectations
Regulatory agencies expect that sterile manufacturing facilities will be:- Designed properly
- Qualified and monitored
- Maintained within a validated state
- Documented properly
Failure to maintain a qualified clean room may result in severe negative regulatory actions.
The qualification of sterile areas is one of the most important processes within Pharmaceutical Manufacturing as it evaluates the performance of cleanrooms to provide the correct environmental conditions for Aseptic Operations on a continual basis, while also minimizing contamination risks through systematic qualification, testing and monitoring, resulting in product sterility assurance.
Through following all regulatory requirements, employing the necessary level of qualification procedures and having ongoing monitoring of the sterile manufacturing process organizations can meet their compliance requirements, ensure product quality and guarantee patient safety. In sterile manufacturing, cleanroom qualification is considered not only to be an important regulatory requirement, but more significantly, an essential element of contamination control.
Frequently Asked Questions (FAQs) on Cleanroom Qualification
Q1. What is sterile area qualification?
Answer: The process that verifies how well the clean room meets the clean room standard for producing sterility in the product is referred to as sterile area qualification; essentially it confirms that the clean room has been properly designed, built and equipped and is capable of producing a sterile product.Q2. Why is cleanroom qualification important?
Answer: The purpose of qualifying clean rooms is to make sure that no contaminants are introduced into the area that will affect the sterility of the product; and that all applicable government regulations have been met for clean room facilities producing sterile products.Q3. What are the qualification stages?
Answer: The qualification process adheres to four distinct stages: (1) Design Qualification (DQ), (2) Installation Qualification (IQ), (3) Operational Qualification (OQ) and (4) Performance Qualification (PQ).Q4. What is a smoke study?
Answer: The airflow pattern/orientation in the clean room is visually monitored using an airflow analysis called the smoke study.Q5. What is HEPA filter integrity testing?
Answer: HEPA filter integrity testing detects leaks; confirms that the HEPA filter is working properly.Q6. How often should cleanrooms be requalified?
Answer: Clean rooms are typically requalified on an annual basis; however, clean rooms should also be requalified because of substantial alterations to the clean room or changes in the HVAC system.Q7. What parameters are monitored during qualification?
Answer: Clean rooms are qualified by monitoring the following parameters: particle count, airflow, differential pressure, temperature, relative humidity and microbial contamination.Q8. What do regulators expect in sterile area qualification?
Answer: Regulators expect to see proper qualification, monitoring, documentation and evidence of compliance with good manufacturing practices in qualified sterile areas.
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