Module 4: Naphthenic Acid Corrosion

[FILL: Summarize the naphthenic acid corrosion risks and learning outcomes for this module.]

Module Overview

[FILL: Training brand]
Crude Corrosivity
4
Topic
Naphthenic acid corrosion
Duration
[FILL: Estimated duration]
Format
Interactive module
Assessment
Knowledge check
Updated: [FILL: Updated date]
Module progress 0%

Complete the module quiz to record progress.

Authoring guide

Edit the [FILL: ...] values in this page's front matter. Add topics by copying an item under params.training.topics; add subtopics by copying an item under that topic's subtopics. Use unique lowercase IDs with hyphens.

Set params.moduleId to a unique ID beginning with params.topicId. Add it to the parent course's moduleList; also add it to videoModuleList and set params.hasVideo: true if it has a video. Set a module weight for its order and use training.previous_url / training.next_url (for example, ../module-2/) to connect sibling modules.

Operational Scenario

[FILL: Crude blend and TAN scenario]

[FILL: Present a crude blend or operating change involving TAN, temperature, or flow. Ask the learner to assess where naphthenic acid corrosion could increase.]

Topics and Subtopics

Select a topic to explore its main ideas, practical considerations, and subtopics.

Crude chemistry

Naphthenic acid chemistry and TAN

[FILL: Explain the relevant naphthenic acid chemistry and how TAN is used in context.]

Key point: [FILL: Explain why TAN alone does not fully determine corrosion severity.]

Chemistry and data to assess

  • [FILL: Describe useful crude assay and acid-composition information.]
  • [FILL: Explain how blend history and operating data inform the assessment.]

Interpretation considerations

  • [FILL: Explain limitations of TAN as a standalone indicator.]
  • [FILL: Identify interactions with sulfur species or other operating factors.]

Subtopics

TAN, acid composition, and crude blending
[FILL: Explain what the learner should know about TAN, acid composition, and blend changes.]
Temperature and flow effects
[FILL: Describe the temperature and flow conditions relevant to the selected process.]

Interactive Challenge

Interactive diagnostic case study

[FILL: Naphthenic acid corrosion case]

[FILL: Case status]

[FILL: Present crude assay, operating conditions, and inspection results. Ask learners to assess susceptibility and recommend the next check.]

[FILL: TAN, operating conditions, and inspection trend]

Diagnostic clues

Review the crude assay
[FILL: Add a clue about TAN, acid composition, or blending.]
Locate the susceptible conditions
[FILL: Add a clue about temperature, velocity, material, or circuit location.]
Reveal the explanation

[FILL: Naphthenic acid corrosion diagnosis]

[FILL: Explain the evidence and reasoning.]

Recommended action: [FILL: Recommended action or reference]

Field Checklist

Naphthenic acid corrosion assessment

[FILL: Explain when to use this crude assay, process, and inspection checklist.]

0 of 5 completed

Knowledge Check

Naphthenic acid corrosion knowledge check

[FILL: Instructions for the learner] Pass mark: 70%.

Not yet passed.

Score: 0 / 2
1. [FILL: Ask how TAN and crude chemistry should be interpreted.]
2. [FILL: Ask which circuit or operating condition needs follow-up.]

Next Steps

Continue the course

Monitoring and Inspection

Continue to Module 5 to review monitoring methods, inspection evidence, and how to interpret trends.

Previous module Next: Module 5