Water system validation (generation and distribution) should contain three phases: Phase I: investigation phase; Phase II: short-term control; and Phase III: long-term control.
The objective of pharmaceutical water system validation during these three phases should demonstrate that water system is under control and producing the specified quality of water over a long time period.
Commissioning of purified water system
Proper documentation of commissioning is an essential part of the successful validation of pharmaceutical water system. Commissioning includes the startup of the water system with documenting the performance of all system parameters.
Qualification
Purified water, water for pharmaceutical use, water for injection systems can directly affect the quality of our pharmaceutical products. Hence, it should be validated. Before starting the validation, water system qualification should be completed i.e. design qualification (DQ), installation qualification (IQ) and operational qualification (OQ).
Phase I:
Water sampling and testing should be done for 2 to 4 weeks to monitor the water system. During this phase, water system should operate continuously without failure. Following things should be considered during this phase.
• Sampling and testing of the raw water i.e. feed water should be done to monitor its quality.
• Sampling after each step should be done daily.
• Chemical and microbiological testing should be done as per the approved specification.
• Operating, cleaning, sanitizing and maintenance procedures should be finalized during this phase.
• Ensure the production of the required quantity of water.
• Alert and action limits should be verified after this phase.
Phase II:
A 2 to 4 week testing should be done again in phase II to monitor the water system intensively. Sampling frequency shall remain as per the previous phase. Water can be used for manufacturing during this phase of water validation.
The demonstration should be done that the water system is producing the required quality and quantity of water while operated according to the relevant SOP.
Phase III:
After the successful completion of phase II, phase III runs for one year. We can use water for manufacturing during this phase.
• The frequency of sampling and testing should be reduced in this phase after successful completion of phase I&II.
• Seasonal variations are observed in this phase of validation i.e. seasonal trending shall be done.
Also see: Pharmaceutical Water
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Before starting phase-I, you should perform Challenging test for Auto dump valves and hold time study. During the phase-I validation drain time study also to be done.
ReplyDeleteWhat is the minimum velocity required in return loop of Purified water system as per USP?
ReplyDeleteActions to be taken after changing EDI of previously qualified water station?
ReplyDeletehii can anyone suggest how we can outsource purifies water and what document we have to prepare for it
ReplyDeletehii can anyone suggest how we can outsource purifies water and what document we have to prepare for it
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