ISA Certified Automation Professional (CAP) program

CAP logo

Certified Automation Professionals (CAPs) are responsible for the direction, design, and deployment of systems and equipment for manufacturing and control systems.

CAP question

Which of the following procedures would NOT be included in an instrument commissioning testing matrix?

A. loop checks and loop tuning
B. calibration
C. receipt verification
D. justification analysis

CAP Answer

The correct answer is D, “justification analysis.” In an instrument commissioning testing matrix, activities are listed that are involved in the verification that the instrument installation is properly received and installed according to the specifications. First, a receipt verification is performed to verify that the instrument received is the correct item, including vendor, model number, size, and process connection type.

The item is then typically bench calibrated and installed in the process according to the piping and instrumentation drawings and installation drawings, including loop drawings. When construction is complete, loop checks are performed. During initial startup, loop tuning is performed, and all instrument readings are verified for consistency and reasonableness. Any deviating instruments may be recalibrated in the field.

Justification analysis was not included in the above discussion. Justification is typically performed during the feasibility phase of a project, or in the case of late scope additions, before purchase in the detailed design phase.

Reference: Trevathan, Vernon L., A Guide to the Automation Body of Knowledge, Second Edition, ISA, 2006.

 

More Certification Review

2018
Sept/Oct
CAP: Variable frequency speed controller
CCST: The Reynolds Number

July/Aug
CAP: Define AC induction motor
CCST: Analog multimeter

May/Jun
CAP: Identify three levels within the manufacturing computer systems hierarchy
CCST: P&ID Symbol

Mar/Apr
CAP: How are the maintainability and maintenance of automation systems related
CCST: Using the parity system to detect transmission errors

Jan/Feb
CAP: The purpose of an industrial control system alarm system audit
CCST: What standard that defines quality policy and procedures

2017
Nov/Dec
CAP: The mission of the Abnormal Situation Management® (ASM®) Consortium
CCST: What is the value of a resistor

Sep/Oct
CAP: Why ANSI/ISA-88.01-1995 (S88) treats control modules
CCST: Measuring current in a circuit

Jul/Aug
CAP: Output sinking configuration
CCST: Analog signal from a transmitter

May/Jun
CAP: The function of the rotor in an AC induction motor
CCST: Level measuring system

Mar/Apr
CAP: Processing of the PID algorithm
CCST: Providing a sample to extractive field analytical instruments

Jan/Feb
CAP: Definition of ALARM
CCST: Calibration instruments

See all Certification Review Articles

Reader Feedback

We want to hear from you! Please send us your comments and questions about this topic to InTechmagazine@isa.org.