Method Functional Safety

Installation, Commissioning and Validation

This lifecycle stage is concerned with ensuring a client is following company procedures for Installation and Commissioning, confirming that the SIS as built meets the requirements of the SRS by way of Validation and preparing to hand over to Operations.

IEC 61511 provides a single page of guidance on Installation and Commissioning. The content of that single page describes activities that would be expected for any typical installation and commissioning project – be it for control or safety – such as checking earthing and bonding, calibrating instruments, checking serial links are communicating and making sure power supplies are operational. The standard does particularly highlight the need for these activities to be planned in advance.

SIS Validation is a critical step in the functional safety lifecycle as it confirms that the SIS has been designed and built so as to meet the original requirements (as expressed in the SRS). If the SIS does not meet the requirements of the SRS then (obviously) it is not fit for purpose. SIS Validation is typically called “Site Acceptance Testing” (SAT). Depending on the nature of the project, the SIS Logic Solver and field instrumentation may have been through an earlier validation step, which may be termed “Factory Acceptance Testing” (FAT). Both of these validation exercises need to be carefully planned and any changes that are required (because the SIS fails a validation test) need to be carefully managed.

SIS Installation and Commissioning, together with Validation activities, will be subject to an FSA 3. Since Installation, Commissioning and Validation (ICV) are normally under considerable time pressure, it is worth considering how the FSA 3 will be carried out. Since much of the FSA 3 will be looking at the planning of these activities, some parts of the FSA 3 could be carried out prior to the start of ICV. This may be a very effective way of reducing delay to handover to Operations.

What =Method can do for you

Most recent projects for Installation, Commissioning and Validation

Review of Installation, Commissioning and Validation of new SIS

Industry: Chemical
Topic: Installation, commissioning and validation

Verification of FAT for military / nuclear dockyard crane

Industry: Military / Aviation
Topic: Installation, commissioning and validation

Developing Site Acceptance Test workbooks for biofuel power station SIS

Industry: Power
Topic: Installation, commissioning and validation

Developing procedures for BPCS installation, commissioning and validation

Industry: Water + Waste
Topic: Installation, commissioning and validation

View all of our recent projects here

Functional Safety Consultancy

=Method's specialist, expert consultants support industries across the entire Functional Safety Lifecycle. If you need help please contact us.

Functional Safety Training

=Method delivers training in public venues, In-house and online. See more about how we deliver training here.

Functional Safety Lifecycle

Assessments at key Lifecycle Stages - Functional Safety Management

Planning throughout the Lifecycle - Functional Safety Management

Verification at every Lifecycle Stage - Functional Safety Management
Hazard & Risk Assessment Allocation of Safety Funct's to Protection Layers Safety Requirements Specification Design & Engineering Installation, Commissioning & Validation Operation & Maintenance Modification Decommission
Functional Safety Management
Functional Safety Audit
What is Functional Safety?What is functional safety?
I am new to this, how do i start?What is functional safety?

E: T: 44 (0)1462 713313. W:

LinkedinMethod Functional Safety member of InstMC
subscribe to course updates
Keep up-to-date
Receive our views on the latest industry developments and/or our latest training course dates.

Functional Safety + Process Safety + Cyber Security + Compliance Assessment + Competency Register + Software Solutions = Method Safety and Security

Address: Method Functional Safety Ltd. Method House, Davis Crescent, Hitchin, SG5 3RB
Phone: +44 (0)1462 713313 Email: Website:

Terms and Conditions | Privacy Policy. Registered In England 08453480. VAT No. GB 159 9080 70. Site © Copyright Method Functional Safety Ltd 2024