The intent of this document is to describe the major aspects of the sampling process, from specific sample identification, determination of analytical requirements, through sample point design, to sample collection. Consideration of these aspects is necessary for the development of robust and safe sampling programs, protocols, and procedures to facilitate indirect corrosion monitoring.

This document is to assist end users in the development of sampling programs. The guidance is structured to provide an awareness of the major aspects of program design, which if not addressed, may have a significant negative impact on the overall performance of these programs. While this document has been primarily developed with a focus on sampling for indirect internal corrosion monitoring; the basic concepts have a broader applicability and may be of benefit to those developing sampling programs in other areas or for other requirements.

At the project phase, the main responsibility of a corrosion engineer is to develop Corrosion Management Program (CMP) and establish a corrosion control strategy for specific individual units. A well-designed Corrosion Management Program is the most useful material not only to prepare a corrosion control strategy, create a reliable inspection plan but also to promote corrosion knowledge management, corrosion talent development and training, integration with other disciplines such as process, operation, inspection, maintenance.
The Hydroprocessing unit is the crucial process of the refinery as high temperature and high-pressure operation conditions are in which major catastrophic accident occurs. An understanding of variables influencing corrosion in hydroprocessing units is necessary for corrosion engineers to improve the reliability, safety and environment impact associated with them. This paper describes an example of how Corrosion Management Program (CMP) and Integrity Operating Windows (IOW) are used for developing specific corrosion control strategy, corrosion knowledge sharing and integration with other disciplines to prepare customized corrosion control strategy of hydroprocessing unit in JAZAN project. The development of corrosion management strategy of Hydroprocessing is focused on the Reactor Effluent Air Cooler system corrosion control using a water-washing method.

The refining industry has made significant strides in technology and materials science, resulting in increased efficiency and reliability of various refinery units. Despite these advancements, unexpected failures persist, leading to costly downtime and potential safety hazards. A recent instance of premature failure in a newly commissioned Naphtha Hydrotreating unit (NHT) highlights the challenges that still exist in maintaining the integrity of critical infrastructure.