T/CI 020-2021 Active Group standards

T/CI 020-2021 Guidance for identifying and eliminating interference alarms in process industry alarm systems

Publish Date: 2021-12-09 Implement Date: 2021-12-09 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CI 020-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Fire alarm monitoring, alarming, and fire dispatching systems

ICS Name: Alarm and warning systems

Publish Date: 2021-12-09

Implement Date: 2021-12-09

Scope

Scope: This standard specifies the terms and definitions of alarm systems in process industries, as well as methods for identifying and eliminating interference alarms. It is particularly applicable to alarm systems in power, petrochemical, and chemical process industries, used to identify and eliminate numerous interference alarms such as jitter alarms, periodic alarms, and continuous alarms that commonly occur in industrial sites. Main technical content: 2.1 Alarm system: An alarm system is a core component of monitoring systems such as distributed control systems (DCS) and data acquisition and monitoring systems (SCADA) in modern process industries. When abnormal conditions occur in industrial production processes, the alarm system can generate corresponding alarm information and convey it to operators through audible, visual, or list formats, alerting them to promptly detect and handle the current abnormal conditions. At the same time, the alarm information is stored in the alarm system for subsequent review and analysis. 2.2 Process variable: A process variable is a main parameter that characterizes the interaction and conversion of substances and energy in industrial processes within production devices or equipment, including temperature, pressure, flow rate, liquid level, composition, concentration, etc. 2.3 Alarm variable: An alarm variable is a variable generated based on the alarm generation mechanism. When the process variable meets the alarm triggering conditions, the alarm variable typically takes the value '1'; otherwise, it takes the value '0'. 2.4 Alarm occurrence: When the process variable meets the alarm triggering conditions, the corresponding alarm variable takes the value from '0' to '1', triggering an alarm event, and the corresponding moment is the alarm occurrence time. 2.5 Alarm clearance: When the process variable meets the alarm clearance conditions, the corresponding alarm variable takes the value from '1' to '0', clearing the alarm even