Industrial control systems (ICSs) and supervisory control and data acquisition (SCADA) are frequently used and are essential to the operation of vital infrastructure such as oil and gas pipelines, power plants, distribution grids, and airport control towers. However, these systems confront a number of obstacles and risks that can jeopardize their safety and reliability, including communication failures, cyber-attacks, environmental hazards, and human errors. How can ensure that SCADA systems are both effective and secure? The oil and gas industry literature needs to include an analysis of the underpinning design process. Available research fails to offer appropriate direction for a methodical technique or modeling language that enables trust-based study of ICS and SCADA systems. The most pressing challenges include attaining trust by design in ICS and SCADA, as well as methodically implementing trust design into the development process from the beginning of the system s life cycle. This paper presents the design of a modern ICS and SCADA system for the oil and gas industries utilizing model-based systems engineering (MBSE) approaches. ICS and SCADA concepts and definitions are presented, and ICS and SCADA are examined using comprehensive architectural artifacts. By extending the SysML diagrams to trust ICS, SCADA, and UML diagrams, we showcase the usefulness of the MBSE method.