Factory Acceptance Testing and Site Acceptance Testing

Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) are two crucial processes that ensure the quality and functionality of industrial equipment and systems. In this article, we will delve into the details of both FAT and SAT, exploring their purposes, procedures, and significance in ensuring successful project implementation.


Important Milestones in the Project Schedule


Explanation
Factory Acceptance Test
Testing of equipment and relevant documentation at the vendor‘s workshops against the requirements of an approved test protocol.

Site Acceptance Test
Testing of equipment and relevant documentation at the site of use of the
equipment against the requirements of an approved test protocol.


What is Factory Acceptance Testing (FAT)?
Factory Acceptance Testing (FAT) is a quality assurance process conducted by equipment manufacturers before the installation and delivery of equipment to the client's site. The primary objective of FAT is to verify that the equipment meets the specified design requirements and operates as intended within the controlled factory environment.

The FAT Process
  1. Test Plan Preparation: The equipment manufacturer prepares a detailed test plan outlining the specific tests to be performed during the FAT process. This plan serves as a roadmap for conducting comprehensive evaluations.
  2. Test Execution: The tests are conducted under simulated operating conditions in the factory premises. The equipment is thoroughly inspected, and various functional tests are performed to ensure its compliance with design specifications.
  3. Performance Evaluation: The equipment's performance is evaluated based on predetermined acceptance criteria. This includes verifying its functionality, reliability, safety features, and adherence to industry standards. Any deviations or issues are documented for further rectification.
  4. Documentation: A comprehensive report is generated, summarizing the test results, deviations (if any), and recommendations for improvement. This document serves as an essential reference for the client during the acceptance process.

Benefits of Factory Acceptance Testing
  1. Quality Assurance: FAT ensures that the equipment is thoroughly tested before delivery, minimizing the risk of malfunctions or deficiencies at the client's site.
  2. Cost and Time Savings: Identifying and resolving issues during the FAT stage reduces potential delays and costly modifications during the installation and commissioning phases.
  3. Compliance and Safety: FAT ensures that the equipment adheres to regulatory standards and safety requirements, ensuring a secure working environment for operators.


What is Site Acceptance Testing (SAT)?
Site Acceptance Testing (SAT) is performed at the client's location after the installation of the equipment. Its primary purpose is to validate that the equipment operates efficiently in its intended environment and meets the client's specific needs.

The SAT Process
  1. Test Plan Customization: A customized test plan is developed based on the client's requirements, taking into account the specific conditions and operational parameters of the site.
  2. Installation and Integration: The equipment is installed, integrated with the existing infrastructure, and configured to meet the site-specific requirements. Any necessary calibrations and adjustments are made during this phase.
  3. Operational Testing: The equipment undergoes a series of tests to evaluate its performance, functionality, and interaction with other systems. This includes load testing, stress testing, and verification of specific features relevant to the client's operations.
  4. Acceptance Criteria Assessment: The test results are compared against predetermined acceptance criteria to determine whether the equipment meets the client's expectations. Any identified issues or discrepancies are addressed and resolved.
  5. Final Documentation: A comprehensive report is generated, summarizing the SAT results, including the test outcomes, compliance with acceptance criteria, and recommendations for further optimization.


Benefits of Site Acceptance Testing
  1. Customization and Adaptation: SAT allows for the customization and fine-tuning of equipment to ensure optimal performance within the client's unique operational environment.
  2. Verification of Specifications: SAT verifies that the equipment fulfills the specifications outlined in the contract, meeting the client's specific needs and requirements.
  3. Seamless Integration: SAT ensures that the equipment integrates smoothly with existing systems, minimizing disruptions and potential compatibility issues.

Regulatory Requirements (EU-GMP-Guide Annex 15)
Factory acceptance testing (FAT) / Site acceptance testing (SAT)
3.4 Equipment, especially if incorporating novel or complex technology, may be evaluated, if applicable, at the vendor prior to delivery.
3.5 Prior to installation, equipment should be confirmed to comply with the URS/ functional specification at the vendor site, if applicable.

What does this mean?
FAT is not a general requirement, not required for
  • small, standard equipment
  • equipment that cannot be readily installed at the vendor’s site (e.g. HVAC-Systems

When should FATs be done?
  • for complex equipment
  • equipment with new technology
  • If transportation is important, e.g. from Europe to Asia!
  • when installation on site is complicated and equipment has to go back to the vendor when it fails

3.6 Where appropriate and justified, documentation review and some tests could be performed at the FAT or other stages without the need to repeat on site at IQ/OQ if it can be shown that the functionality is not affected by the transport and installation.
3.7 FAT may be supplemented by the execution of a SAT following the receipt of equipment at the manufacturing site.

What does this mean?
When an FAT is performed, tests do not have to be repeated for IQ and OQ, if
  • transport and installation did not have a negative impact
  • tests are performed and documented in a GMP-compliant manner
  • supervision by the qualification team

SAT should be done after installation on site

Remark: This is normally when the supplier gets paid, however, the contract should include that final payment is done after successful OQ (PQ) testing.

General scope of Work
Testing equipment for compliance with URS / FDS and GMP requirements by checking:
  • Completeness of installation
  • Dimensions and correct design
  • Materials and surfaces
  • Functional tests, performance tests and safety functions
  • Completeness of documentation
  • Testing according to approved test protocols.
  • Test protocols approved by all involved parties (user, manufacturer, engineering partner - if applicable)
  • SAT may include tests from FAT under „real“ conditions. Not all conditions can be simulated in manufacturers workshop!
  • Reporting of results and deficiencies
  • Target of FAT: Approval for shipping to installation site
  • Targets of SAT: Final acceptance, proof of process guarantees, hand-over from manufacturer to user.


Suggested contents of Test plans
  • Introduction incl. short process description
  • Scope of the test plan
  • Deficiency handling
  • Responsibilities
  • Identification of reference instruments and test personnel
  • Test description and test result summary sheet
  • Attachments (forms for test raw data, SOPs, etc. )

Explanation: Deviations vs. Deficiencies

Test Definition
  • Time schedule for the tests
  • What has to be tested and what are the acceptance criteria?
  • How shall the tests be executed? Test conditions?
  • According to which guidelines and standards?
  • Who is responsible for test preparations, delivery of test material and test execution?
  • What has to be done when a test fails?
  • How are the test results to be reported?

Execution of Tests according to Test plans
  • The equipment is generally operated by supplier’s personnel
  • Functional tests are witnessed / supervised by personnel of the user
  • Other tests/checks are executed by either manufacturer or user
  • Qualification staff of user shall be involved in testing to avoid double testing in subsequent IQ / OQ / PQ
  • Tests may have also the purpose of training for the users personnel (participation of operators, technical and maintenance staff is recommended).


Reporting and Deficiency Handling
  • All results form the tests have to be reported in the test protocol
  • When tests could not be carried out as planned: describe why and how it has been done instead.
  • If acceptance criteria are not met: write down in a deficiency form
  • Deficiency forms must have clear indication of deviation, actions to solve the deviation, time lines and responsibilities
  • Requirements for re-testing and final approval have to be stated in the deficiency form.

Object:                                                                                Date:

Deficiency number:

Description of deviation

 

 

 

Name / Signature ..........................................                    Date…………………………….

Consequence of deficiency

Proposed solution (vendor)

Representative (vendor)

 

 

Name / Signature…….....................................                   Date ..................................

Solution accepted                              Solution not accepted     

Comments

Representative (purchaser)

 

Name / Signature ..........................................                 Date ..................................

Implemented solution (vendor)

 

 

 

Name / Signature ............................................                    Date……………………………

Result accepted                                  Result not accepted         

Comments

Approval (Purchaser Representative)

 

 

Name / Signature .......................................... Date ..................................

Deficiency closed (Vendor Representative)

 

Name / Signature ........................................... Date..................................


Prerequisites for successful execution
  • Sufficient information flow between manufacturer and user during the engineering and manufacturing phase.
  • Clearly documented test conditions and acceptance criteria (Test plans).
  • Frequent inspections during manufacturing.
  • Well prepared equipment (readiness for tests!) and availability of necessary installations (e.g. media supply) and test material.
  • Clearly defined responsibilities and experienced personnel on all sides.


Common problems in FATs and how to avoid them

Problem

Solution

Equipment has not been completed by the vendor.

Necessary Pre-checks are not completed

Define proper time schedule, supervise progress + ensure sufficient communication

Testing material (ampoules, plastic films, granulate, etc ..) is not available for FAT

Specify quality, amount and delivery time as early as possible

Required utilities (steam, cooling water, air, etc..) are not available

Specify quality and number of necessary utilities and provide them for test

Equipment does not fit the spec, (misunderstandings? unqualified vendor?)

Thorough check of specifications à DQ Selection of adequately experienced vendor

Audit the vendor and qualify him

Specified tests cannot be executed due to “protocol error”

Sufficient checking and approval of test plan (by technical and validation dep.)

Test plans are too “complicated / awkward”, not practical

Ensure easy understandable test plan by cross check for suitability

The plant is not ready (building, rooms, utilities), no real product, missing approvals

Time scheduling and progress supervision in all areas. If necessary, delay delivery

Staff (operators, maintenance) not sufficiently trained or not enough personnel available to support trials

Early recruiting and planning in of resources

Test fails because site specific conditions were not considered in planning

Thorough check of URS with regard of site-specific conditions (e.g., media press.)

Equipment does not arrive on time due to failed FAT, rework or other reasons

Consider possible delays in planning. Prepare alternative activities

Equipment has been damaged during transport or parts are missing

Choose reliable freight forwarder, correct packing + protection

Check transport ways before start of delivery

Equipment has been installed incorrectly

Choose qualified installation company. Preferably involve vendor of equipment


Conclusion
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) play pivotal roles in ensuring the successful implementation of industrial projects. FAT validates equipment performance in the controlled factory environment, while SAT confirms its functionality and suitability within the client's site-specific conditions.


By conducting FAT, equipment manufacturers can guarantee that the delivered equipment meets design specifications and industry standards. This process reduces the risk of operational issues and ensures a high level of quality assurance. It also saves time and costs by addressing potential problems before the equipment reaches the client's site.

SAT, on the other hand, focuses on verifying the equipment's performance and integration at the client's location. It allows for customization and fine-tuning to meet the specific needs of the client's operational environment. Through operational testing and assessment, any deviations from acceptance criteria are identified and resolved, ensuring that the equipment functions optimally in its intended setting.

Both FAT and SAT contribute to compliance and safety by ensuring that equipment meets regulatory standards. They provide documented evidence of testing and acceptance, which is valuable during audits and inspections. Additionally, these acceptance tests facilitate effective communication between equipment manufacturers and clients, fostering collaboration and mutual understanding.

In summary, Factory Acceptance Testing and Site Acceptance Testing are vital steps in ensuring the successful implementation of industrial projects. By conducting thorough evaluations before and after equipment installation, manufacturers and clients can minimize risks, ensure equipment quality, and achieve project objectives efficiently. These acceptance tests contribute to the overall success of the project by addressing potential issues, improving equipment performance, and creating a strong foundation for long-term operational reliability.

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