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News Blog
April 6, 2020 08:37 PM

Cleanroom Cleaning & Disinfection Per Annex 1, rev 12

Written by Paola Lazzeri

The latest Annex 1 draft offers several updated expectations on cleanroom cleaning, decontamination and disinfection. Learn about these expectations and addressing them with a contamination control strategy (CCS)

Definitions

  • Cleaning (NEW)A process for removing contamination e.g. product residues and disinfectant residues from a cleanroom.
  • Decontamination The overall process of removal or reduction of any contaminants (chemical, waste, residue or microorganisms) from an area, object, or person. The method of decontamination (e.g. cleaning, disinfection, sterilization) should be chosen and validated to achieve a level of cleanliness appropriate to the intended use of the item decontaminated.
    (this definition was added in rev 2017; significant detail was added to rev 2020).
  • Disinfection The process by which the reduction of the number of microorganisms is achieved by the irreversible action of a product on their structure or metabolism, to a level judged to be appropriate for a defined purpose.
    •  Added in Annex1 rev.2017 – Glossary = Disinfection: the process by which surface bioburden is reduced to a safe level or eliminated. Some disinfection agents are effective only against vegetative microbes, while others possess additional capability to effectively kill bacterial and fungal spores
      – in Annex1_2008 = the word ‘Sanitation’ was used but it was not in the glossary

There are 3 main points to keep in mind from the latest Annex 1 on this subject:

1. Cleanroom Cleaning and Disinfection are a part of a CCS

As specified in the following sections: 2.5, 4.12, 8.46, cleaning and disinfection are clearly described as parts of the Contamination Control Strategy (CCS) with the following considerations:

  • There is a clear need for a specific cleanroom cleaning and disinfection program
  • A decontamination strategy should be based on appropriate risk assessment and mitigation measures.
  • The appropriate disinfectant for materials entering into sterile areas should be defined based on the QCP of the biocide.
  • Biocidal effectiveness and contact time should be carefully evaluated.
  • Alcohol is not the preferred disinfectant.

2. Clean before Disinfecting

Cleanroom cleaning per Annex 1 via a CCS

Sections 4.24 and 4.36 address this issue.

  • Cleaning is an important step of the decontamination process
  • Cleanroom cleaning procedures should be demonstrated to be effective.
  • Clear expectation that cleaning should be performed before disinfecting

3. Annex 1 focuses on validation of disinfection process

Section 4.37 starts with “The disinfection process should be validated.” This should include:

  • Exhaustive validation studies supporting disinfectants effectiveness.
  • Clear description of the intended purpose of the disinfection when designing a reliable validation of a disinfection process.

Particle Measuring Systems’ (PMS) Contamination Control Advisory Team supports Pharma Companies in defining effective contamination control strategies (CCS) including cleanroom cleaning and disinfection. PMS strongly emphasizes the importance of cleaning and recommends specific decontamination procedures based on QRM, depending on biocides’ intended purpose. Low residues disinfectants are recommended for lean and reliable cleaning and disinfection SOPs.

Note: see more about the specific sections and details regarding this topic by watching this video on Annex 1 updates regarding Cleaning & Disinfection.

Contact us now to get a quote for  PMS Advisory Services.

Other relevant blogs:

  • How to Achieve Quality by Design (QbD) in a new Pharmaceutical Fill Line: Intro and Regulatory (Series Part 1 of 6)
  • Quality Risk Management (QRM), Annex 1, Section 2

Filed Under: Particle Knowledge

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