IEC 62381:2006

INTERNATIONAL IEC
STANDARD 62381
First edition
2006-11
Automation systems in the process industry –
Factory acceptance test (FAT), site acceptance
test (SAT), and site integration test (SIT)

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INTERNATIONAL IEC
STANDARD 62381
First edition
2006-11
Automation systems in the process industry –
Factory acceptance test (FAT), site acceptance
test (SAT), and site integration test (SIT)
© IEC 2006 ⎯ Copyright - all rights reserved
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– 2 – 62381 © IEC:2006(E)
CONTENTS
INTRODUCTION.5
FOREWORD.3

1 Scope.6
2 Terms and definitions.9
3 Abbreviations .10
4 General preparation before conducting the FAT .11
4.1 Documents typically prepared by owner/contractor .11
4.2 Documents typically prepared by vendor .11
5 Factory acceptance test .12
5.1 General .12
5.2 FAT test schedule .12
5.3 Test procedure .13
5.4 FAT rework .16
5.5 Documentation of FAT in accordance with Annex A.16
6 Site acceptance test .16
6.1 General .16
6.2 SAT test schedule .16
7 Site integration test .17
7.1 General .17
7.2 SIT test schedule .17

Annex A (informative) FAT checklists.18
Annex B (informative) SAT checklist .30
Annex C (informative) SIT checklist .31
Annex D (informative) FAT certificate .32
Annex E (informative) SAT certificate .33
Annex F (informative) SIT certificate .34
Annex G (informative) Automation system acceptance certificate.35
Annex H (informative) FAT punch list.36
Annex I (informative) SAT punch list .37
Annex J (informative) SIT punch list.38

Figure 1 – Diagram depicting typical sequence of events for FAT, SAT and SIT with
respect to the project milestones .7
Figure 2 – Diagram depicting the relationship for the SAT and SIT between the DCS
and subsystems.8
Figure 3 – Diagram depicting the relationship between the FAT, SAT and SIT with the

relevant plant levels.9

62381 © IEC:2006(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATION SYSTEMS IN THE PROCESS INDUSTRY –
FACTORY ACCEPTANCE TEST (FAT),
SITE ACCEPTANCE TEST (SAT), AND SITE INTEGRATION TEST (SIT)

FOREWORD
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International Standard IEC 62381 has been prepared by IEC technical committee 65:
Industrial-process measurement and control.
This standard cancels and replaces IEC/PAS 62381 published in 2004. This first edition
constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
65/385/FDIS 65/394/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 62381 © IEC:2006(E)
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

62381 © IEC:2006(E) – 5 –
INTRODUCTION
There is an increasing trend in the process industry to shorten the time period for project
execution. At the same time, the complexity of automation systems is being increased due to
the number of connected systems and the use of new technologies, for example, fieldbus
systems.
Experience has shown that the owner, the contractor and the vendor have long and extensive
discussions to unambiguously lay down the scope of activities and responsibilities in order to
achieve a timely delivery and acceptance of automation systems.
This standard should lead to an improvement and acceleration of the negotiation phase and to
a mutual understanding about the scope of activities of each party
The annexes of this standard contain forms which may be used in the test procedures. Buyers
of this standard may copy these forms for their own purposes only in the required amount.
For application in the pharmaceutical or other highly specialized industries, additional
guidelines (for example, Good Automated Manufacturing Practice (GAMP)), definitions and
stipulations should apply in accordance with existing standards, for example, for GMP
Compliance 21 CFR (FDA) and the Standard Operating Procedure of the European Medicines
Agency (SOP/INSP/2003).
– 6 – 62381 © IEC:2006(E)
AUTOMATION SYSTEMS IN THE PROCESS INDUSTRY –
FACTORY ACCEPTANCE TEST (FAT),
SITE ACCEPTANCE TEST (SAT), AND SITE INTEGRATION TEST (SIT)

1 Scope
This International Standard defines procedures and specifications for the Factory Acceptance
Test (FAT), the Site Acceptance Test (SAT), and the Site Integration Test (SIT). These tests
are carried out to prove that the automation system is in accordance with the specification.
Engineering and manufacturing activities prior to these tests are not covered by this standard.
The description of activities described in this standard can be taken as a guideline and
adapted to the specific requirements of the process/plant/equipment. A typical sequence of
activities and events is shown in Figure 1, their relationship in Figures 2 and 3.

62381 © IEC:2006(E)                  – 7 –

Construction Precommissioning  Commissioning

Mechanical Completion
Start up
Loop check * Cold commissioning Hot commissioning

Process control system completion

ESD ESD
ESD/DCS
DCS DCS
FAT SAT SIT
Prerequisite for FAT Prerequisite for SAT Prerequisite for SIT

- SW complete - Shipment of system to site - Systems properly connected
- System hooked up - SAT complete
- Proper installation
- Vendor in-house test completed
- System start-up
IEC  2059/06
*The loop check can actually be started during the construction phase once the require
...