Cleaning validity(Cleaned equipment hold time)-CIP of Pipelines and equipments

Validation
1

How to establish Cleaning validity (Cleaned equipment hold time)-CIP of Pipelines and equipment’s - Sterile department.

  1. What frequency sample to be taken?
  2. from where samples to be taken?
  3. What samples to be taken?
  4. What should be the acceptance criteria for C class and B Class equipments? as equipment will further undergo SIP!!
  5. what are the types of samples shall be collected?

Reference guideline!!

Thanks