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TRANSCRIPT
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ENVIRONMENTS CONTROLLED MONITORING
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CONTROLLED AREA
• Manufacturing area where non-sterile product and in process material contact equipment surfaces or are exposed to the environment
• Viable and nonviable contaminants are controlled to specific levels
• Class 100,000 and Class 10,000
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CRITICAL AREA
• Aseptic processing area where sterile products/components are exposed to the environment and no further processing will occur
• Class 100
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ROOM CLASSIFICATION(CLASS NAMES)
ISO US FS 209E USP SI
3 1 M 1.5
4 10 M 2.5
5 100 M 3.5
6 1,000 M 4.5
7 10,000 M 5.6
8 100,000 M 6.5
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ROOM CLASSIFICATIONLIMITS IN PARTICLES > 0.5µm
ISO US FS 209E ISO (m3) FS 209E (ft3)
3 1 35.2 1
4 10 352 10
5 100 3,520 100
6 1,000 35,200 1,000
7 10,000 352,000 10,000
8 100,000 3,520,000 100,000
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BUILDING
• Sufficient space to allow – proper cleaning, maintenance, and manufacturing functions– orderly operations– contamination control
• Sealed windows, flush surfaces
• Changing rooms/washing facilities
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BUILDING (cont.)
• Clean utilities such as gasses, water
• HVAC system
• Filtration of air – HEPA’s
• Airflow from critical to less critical areas
• Air lock to maintain positive pressure
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ENVIRONMENT / HVAC SYSTEM VALIDATION
• HVAC air velocity, airflow patterns• HEPA filter integrity and efficiency• Air pressure differentials
– 0.04 to 0.06 inches of water gauge• Cleaning and sanitization/disinfection studies• Airborne non-viable particle counts• Airborne viable particle counts
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REGULATORY BASIS FOR ENVIRONMENTAL MONITORING
• CFR GMP regulations
• FDA Guidance Documents
• USP Informational Chapter <1116>
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ENVIRONMENTAL CONTROL21 CFR 820.70 (c)
• “Where environmental conditions could reasonable be expected to have an adverse effect on product quality, the manufacturer shall establish and maintain procedures to adequately control these environmental conditions”
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ENVIRONMENTAL MONITORING COMPONENTS
• Non-Viable Particles – Air
• Microbial Contamination– Air – Surface
• Pressure Differential• Water quality• Temperature and Humidity
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PRODUCT BIOBURDEN
• Does not have to be part of an environmental monitoring program
• Test performed on a non-sterile product to determine its microbial load
• Reflects the quality control of manufacturing process and raw materials
• Needed to verify adequacy of sterilization process
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ENVIRONMENTAL CONTROL21 CFR 820.70 (c)
• An uncontrolled environment may result in inconsistent bioburden levels
• Bioburden spikes may exceed the sterilization process capability to achieve the desired SAL
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MICROBIAL IDENTIFICATION
• USP <1116>– An environmental monitoring program should include identification
of the flora obtained from sampling.
• ANSI/AAMI/ISO TIR 15843:2000– Characterization of bioburden is required to reduce the frequency
of dose audits
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ENVIRONMENTAL MONITORING PROGRAM
• Documented in SOP• Details procedures used for monitoring• Includes sampling sites• Specifies sampling frequency• Describe investigation when Alert or Action levels are exceeded• Describes methods for trend analysis• Training
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AIRBORNE PARTICULATE COUNT
• AKA total particulate count
• Detection of particles > 0.5 µm (outside of US particles > 5.0 µm are counted)
• Monitoring is recommended during operations
• Optical particle counting equipment is commonly used
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MICROBIAL MONITORING
• Assess the effectiveness of sanitization practices and of personnel
• Provides sufficient information to ascertain that the environment is controlled
• Is conducted during normal operations
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MICROBIAL MONITORING
• Room air• Compressor air• Surfaces
– Equipment– Sanitization containers– Floors– Walls– Personnel garments
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Airborne Viable Particulate Count- Methods
• Passive monitoring– Settling plates– Not generally recommended in US
• Active monitoring– Solid culture medium impaction– Testing of known volumes of air that allow quantification by unit of
volume air
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AIRBORNE VIABLE PARTICULATE COUNT - EQUIPMENT
• Passive air monitoring– Petri dish with agar
• Active air monitoring– Slit-to-Agar (STA)– Sieve Impactors– Centrifugal Impactors– Filtration– Liquid Impingement– Gelatin Filter Sampler
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SURFACE MICROBIAL MONITORING METHODS
• Contact Plates
• Flexible Films
• Swabs
• Surface Rinse Methods
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PERSONNEL MONITORING
• Garments– Chest – Sleeves– Other areas are sampled for qualification
• Gloves– Finger impressions
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EXAMPLE OF SAMPLING SITES
System Site
Environmental air (filling) Near open containers
Room air Proximal to work areas
Water Point of use
Surface (facility) Floor, door handles, walls
Surface (equipment) Filling line, control panels
Compressed air Farthest from compressor
Laminar air flow Near high activity areas
Operator Finger impressions
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SAMPLING FREQUENCY
Sampling Area Frequency
Class 100 or less Each shift
Class 10,000 Each shift
Some support areas Twice/week
Product/container contact areas Twice/week
Other support areas > Class 100,000
Once/week
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TRAINING PROGRAM
• Personal hygiene/habits• Illness• Clothing/gowning practices• Introduction to microbiology• GMPs• Introduction to aseptic techniques• Participation in media fills to demonstrate aseptic skill level• Must be documented
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ALERT AND ACTION LEVELS
• Alert Level– A level than when exceeded indicates a process may have drifted
from its normal operating condition. Warning that does not warrant a corrective action
• Action Level– A level than when exceeded indicates a process has drifted from
its normal operating condition. Documented investigation and corrective action required
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AIR - ACTION LEVELS
Class CFU/m3 CFU/ft3
100 < 3 < 0.110,000 < 20 < 0.5100,000 < 100 < 2.5
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EQUIPMENT/FACILITIES SURFACE – ACTION LEVELS
Class CFU per Contact Plate
100 3 (including floor)10,000 510,000 10 (floor)
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PERSONNEL GEAR SURFACE – ACTION LEVELS
ClassGloves
(cfu/plate)Clothing (cfu/plate)
100 3 5
10,000 10 20
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ACTION LEVEL INVESTIGATIONS
• Review of:– Maintenance records– Sanitization documentation– Operational parameters
• Identification of microbial contaminants• Training of personnel
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CORRECTIVE ACTIONS
• Training of personnel• Additional sampling • Increased frequency of sampling• Additional sanitization• Additional product testing• Evaluation of the need to revise SOPs• Product impact/disposition documented
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WATER REQUIREMENTS
Test WFI Purified Potable
TOC 500 ppb 500 ppb NoneConductivity See USP See USP NoneMicrobial 10 CFU/100mL 100 CFU/mL 500 CFU/mLEndotoxin 0.25 EU/mL None None
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WATER SYSTEMMONITORING FREQUENCY
Test WFI System Purified Water
Endotoxin Daily * NoneMicrobial Daily * Weekly
TOC Weekly WeeklyConductivity Weekly Weekly
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ENVIRONMENTAL MONITORINGSURVEILLANCE SUPPORT
• Alert and Action Levels• Data Management
– Collection, trend analysis and interpretation• Isolates Characterization• Investigation/Corrective Actions• Documentation
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REFERENCES• “Fundamentals of Environmental Monitoring”, Supplement TR 13,
PDA J. Pharm. Sci. & Tech. 55(6), 2001.
• United Stated Pharmacopeia 30, <1116> Microbiological Evaluation of Clean Rooms and Other Controlled Environments. The United States Pharmacopeia Convention Inc., Rockville, MD. pp 589-596 (2007).
• United Stated Pharmacopeia 30, <797> Pharmaceutical Compunding-Sterile Preparations. The United States Pharmacopeia Convention Inc., Rockville, MD. pp 334-351 (2007).
• United States Food and Drug Administration “Medical Device Quality Systems Manual” (January 1997).
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THANK YOU