Instrumentation

In chemical production, startups and shutdowns are routine but critical operations. Short-term shutdowns generally have minimal impact on instruments, with limited adjustments needed by instrumentation personnel. However, this document focuses on large-scale shutdowns and startups, such as those due to major overhauls, extensive stoppages, or events requiring prolonged halts and subsequent restarts of operations. Note […]

Introduction Japanese Industrial Standards (JIS) define various thread types for different industrial applications. These threads are widely used in mechanical components, piping systems, and precision instruments. This article provides an overview of the most common JIS thread types, their characteristics, applications, and examples. 1. JIS Parallel Pipe Thread (JIS B 0202) Designation: PF (Equivalent to

1. Incident Overview In chemical production or other industrial scenarios involving instrument heat tracing and steam systems, errors during the welding of heat tracing pipes can lead to severe issues. For example, heat tracing pipes may be mistakenly connected to oil system pipelines in the steam system or accidentally linked to isolated oil systems during

The installation height of combustible and toxic gas detectors is a critical factor in ensuring the safety and effectiveness of gas detection systems. Proper installation height depends on the physical properties of the gas, the characteristics of the detection environment, and the location of potential gas release points. Below is a detailed guide on determining

Instrument verification and calibration reports are critical documents in the metrology industry. Companies often conduct testing and measurement to obtain these certificates, which serve two primary purposes: ensuring compliance with regulatory audits and maintaining cost control to support smooth production operations. However, are verification and calibration reports the same? What are the key differences between

Introduction In the modern manufacturing landscape, enterprises are under constant pressure to enhance efficiency, ensure compliance, and optimize resource utilization. This challenge is particularly pronounced in the chemical industry, where precision, safety, and regulatory compliance are paramount. One technological solution that has gained widespread attention is the Manufacturing Execution System (MES). An MES system acts

In many industrial projects, temperature measurement is essential, and the primary sensors used are thermocouples and resistance temperature detectors (RTDs). When selecting a temperature sensor for a specific location, the choice between a thermocouple and an RTD depends on several factors, including temperature range, accuracy, and installation conditions. This article explores the differences between these

1. Confirmation and Validation of Calibration Methods in Metrological Testing 1.1 Control and Management of Calibration Methods Laboratories must implement effective control and management over the metrological testing and calibration methods they employ. This includes establishing clear criteria for when a new method should be introduced and continuously monitoring the development of metrological testing and

1. Introduction 1.1 Concept and Importance of Predictive Maintenance Predictive Maintenance (PM) is an advanced maintenance strategy that leverages real-time monitoring and data analysis to predict potential equipment failures and anomalies. By addressing issues before they escalate into failures, PM minimizes downtime and reduces maintenance costs. In the refining and petrochemical industries, instrumentation and control

Introduction Coking flue gas is an important industrial by-product generated in factories where coal undergoes high-temperature pyrolysis. It is particularly common in industries such as steelmaking, coke production, fertilizer manufacturing, and energy production. The coking process involves heating coal in an oxygen-deficient environment, causing it to decompose thermally and release gases. These gases include valuable