Validating user

It is a process of establishing evidence that provides a high degree of assurance that a product, service, or system accomplishes its intended requirements.

It is a process that is used to evaluate whether a product, service, or system complies with regulations, specifications, or conditions imposed at the start of a development phase.

Verification of machinery and equipment usually consists of design qualification (DQ), installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ).

DQ may be performed by a vendor or by the user, by confirming through review and testing that the equipment meets the written acquisition specification.

It is entirely possible that a product passes when verified but fails when validated.

This can happen when, say, a product is built as per the specifications but the specifications themselves fail to address the user's needs.

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Qualification of machinery/equipment is venue dependent, in particular items that are shock sensitive and require balancing or calibration, and re-qualification needs to be conducted once the objects are relocated.

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