Reports
What are the three key parts of a corrosion project report?
Summary, field observations/data, and recommendations
What is a JSA used for?
To identify job steps, hazards, and safety precautions
Calculate Ireq: E_native = -600, E_off = -790, I_test = 2.0 A
Ireq = [(-850 - (-600)) × 2.0] / (-790 - (-600)) = (250×2) / -190 = -500 / -190 = 2.63 A
What is a Gantt chart used for?
To visualize project scheduling and task dependencies
What does a rectifier do?
Converts AC power to DC for CP current
Why is it important to include site photos in a field report?
Provides visual evidence and context for reported findings
Name one common jobsite hazard.
Tripping hazards, energized equipment, confined spaces, etc.
Estimate cost: 100 hrs @ $40/hr + $3,100 materials
$4,000 + $3,100 = $7,100
How do you estimate labor cost?
Multiply hours worked by hourly wage rate
Define a coating holiday.
A gap or defect in a protective coating exposing the metal
What section summarizes environmental conditions?
Field observations or environmental overview
Why is PPE necessary during CP testing?
Protects against shock, arc flash, environmental exposure
What does E_off mean in CP testing?
It's the instant-off potential measured when current is interrupted, used to assess polarization
Define budget overrun. Define budget overrun.
When project costs exceed the planned budget
What does a reference electrode measure?
Structure-to-electrolyte potential
Which report section includes voltage readings?
Data or measurement section
Who is responsible for identifying hazards?
Everyone on the job site (including the technician)
What tool is used to record voltage?
Multimeter or high impedance voltmeter
Why is time tracking important?
Ensures accurate billing, cost control, and deadline monitoring
What is a test station used for?
To monitor CP system voltage and currents
How do report errors affect project outcomes?
They can lead to safety issues, incorrect decisions, budget impacts, or regulatory noncompliance
What is one benefit of daily field documentation?
Helps track safety, technical issues, and protects against liability
Explain the formula: Ireq = ΔE × I_test / ΔV
It calculates the required CP current based on target potential shift and measured polarization
What data helps forecast project delays?
Task durations, resource availability, and progress metrics (e.g., Gantt updates)
Name one type of CP system.
Impressed current system or galvanic/anode-based system