Project management of a Safety Instrumented System (SIS) related project is very challenging as this kind of project needs to undergo requirements specified in IEC61511/ISA84.
As per IEC61511 – the requirement is to identify the management activities that are necessary to ensure the functional safety objectives are met.
This is the overall responsibility of the Project management team to fulfill the requirements.
Persons, departments, organizations, or other units which are responsible for carrying out and reviewing each of the SIS safety life-cycle phases shall be identified and be informed of the responsibilities assigned to them.
Persons, departments, or organizations involved in SIS safety life-cycle activities shall be competent to carry out the activities for which they are accountable.
The following items shall be addressed and documented:
The procedure shall be in place to manage the competence of all those involved in the SIS life cycle.
Periodic assessments are to be carried out to document the competence of individuals against the activities they are performing and on change of an individual within a role.
Safety planning shall take place to define the activities that are required to be carried out along with the persons, departments, organizations, or other units responsible to carry out these activities.
This planning shall be updated as necessary throughout the entire SIS safety life-cycle and carried out to a detailed activity level commensurate with the role the individual or organization is performing in the Safety Instrumented System (SIS) safety life-cycle.
The safety system will contribute to 1 ~ 2% of Total Installed Costs on any project, hence least attention will be provided. It’s the prime responsibility of Project management to handle this.
The safety system installation plan shall be embedded in the overall project schedule with proper care.
Safety instrumented system shall be thoughtfully tested and commissioned, hence it has to meet all the requirements specified in Safety Requirement Specification (SRS) and go through the different levels of approvals prior to installation and commissioning. All these timelines are to be integrated into the overall project plan.
Establishing the safety design requirements early in the project avoids modifications at the tail end of the project schedule. This may call for additional budget/technical & trained resources and time.
Some of the common safety PLC system mistakes that could lead to delays in meeting the project schedule:
It is the responsibility of the Project Management team to include key elements of the Safety Instrumented System plan is included in the Level 3 schedule.
Under the Level 2 schedule, very high-level activities and deliverables are to be listed.
Key elements of the Level 3 schedule are:
By following the best Project management principles project installation & commissioning will be done without hassle. It is the responsibility of every plant/project owner to include SIS Project Management from the beginning of the project for successful implementation.
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