What’s your process for monitoring equipment limits?

API RP 970 provides recommendations on developing, implementing, and maintaining corrosion control documents (CCDs); however, the recommendations generally remain at the owner’s discretion. Refineries, Petrochemical and Chemical Process facilities all benefit from implementing integrity operating windows (IOWs) and CCDs to prevent failures, optimize production, and extend an asset’s life span. 

E2G follows a streamlined process, using API 970 and API 584 as guidelines, to define site-specific IOWs and CCDs at industrial manufacturing facilities.

CCDs and IOWs are reliability tools that help move a plant organization from reactive to proactive.

Why do you need IOWs and CCDs?

Safe & Reliable Operations 

  • Proactive tools to manage damage rates, create operating limits, and establish monitoring programs 
  • Support turnaround planning and shutdown/start-up strategies 
  • Provide recommendations for equipment upgrades, replacements, and process changes 

CCDs and IOWs are instrumental to mechanical integrity and RBI programs as they outline the proper design, construction, operation, monitoring, inspection, and mechanical integrity improvements for your facility or equipment.


  • Establish limits for process equipment to maintain integrity and improve reliability 
  • Promote predictable damage rates 
  • Follow actionable steps if and when equipment exceeds set limits 
  • API RP 584 provides information needed to identify which equipment may require an IOW, and how to create and implement IOWs for that equipment 


  • Multi-disciplinary roadmap for specific damage-related information, impacts, and supporting data for a process unit 
  • Implement and integrate into plant processes and management  
  • Promote proper design, construction, monitoring, inspection, and mechanical integrity improvements 
  • Track corrosion & other damage mechanisms (creep, fatigue, brittle fracture, hydrogen embrittlement, and HTHA) 

Download the free CCD & IOW Implementation Guide

This guide explains how CCDs and IOWs are the reliability tools that help move plant organization from reactive to proactive.

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CCDs & IOWs Expertise

E2G follows a streamlined process to define IOWs and CCDs at an industrial manufacturing facility. We develop thorough CCDs and customized limits for each process unit by analyzing your equipment’s specific operation, stream chemistry and metallurgy to minimize the likelihood of damage. Our team follows a streamlined process that integrates API 970 and API 584 guidelines to develop your site-specific documentation. 

We’re focused on creating safe operating environments and controlling risk. 

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