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CCST Performance Domains with Tasks — Domain II

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The job analysis panel determined the knowledge and skills required to perform each task competently. These knowledge and skill statements are shown below.


Domain II: Loop Checking
Task 1: Obtain documents pertaining to the process loop in order to understand all devices and their intended functions.
  • Knowledge of:
    • ISA symbol and terminology as per ISA Standards 5.1
    • The function of each loop component
    • ISA loop diagrams as per ISA standards
    • Loop checking procedures
  • Skill in:
    • Interpreting P&ID symbols
    • Interpreting loop diagrams
    • Following all appropriate procedures

Task 2: Inspect the loop components through visual observation in order to ensure that the components are correctly installed.
  • Knowledge of:
    • Mechanical & electrical fundamentals
    • ISA loop diagrams as per ISA standards
    • Loop components and operations through review of data sheets
  • Skill in:
    • Interpreting loop diagrams
    • Interpreting P&IDs
    • Following all appropriate procedures
    • Interconnecting loop components

Task 3: Verify that appropriate utilities are available and operational through visual inspection in order to perform the loop check.
  • Knowledge of:
    • Physical sciences and mathematics
    • DC & AC circuits
    • Mechanical and electrical fundamentals
  • Skill in:
    • Interpreting mechanical and electrical drawings
    • Interpreting P&IDs
    • Using test/measurement equipment

Task 4: Isolate the process loop from the system by following established site procedures in order to perform the loop check in a safe manner.
  • Knowledge of:
    • Site safety procedures
    • Site loop check procedures
    • Loop diagrams
    • P&IDs
  • Skill in:
    • Following all appropriate procedures
    • Using loop diagrams
    • Interpreting P&IDs

Task 5: Simulate a change in the measured variable in order to verify proper loop performance.
  • Knowledge of:
    • Basic physical properties of matter
    • Fundamentals of electricity
    • Function of each loop component
    • Basic temperature, pressure, flow, and level properties
  • Skill in:
    • Using test equipment
    • Interpreting loop diagrams
    • Interpreting P&IDs
    • Using test equipment
    • Using hand tools

Task 6: Make necessary corrections in order to bring loop performance within specifications.
  • Knowledge of:
    • Basic physical properties of matter
    • Fundamentals of electricity
    • Function of each loop component
    • Basic temperature, pressure, flow, and level properties
  • Skill in:
    • Using test equipment
    • Interpreting specification sheets
    • Interpreting P&IDs
    • Using test equipment
    • Using hand tools
    • Interpreting loop diagrams

Task 7: Complete all documentation as required in order to update all loop records.
  • Knowledge of:
    • All appropriate site documentation
    • All appropriate site procedures
    • ISA loop diagrams and ISA loop standards
  • Skill in:
    • Using drafting standards
    • Technical writing