Method and system for managing plant alarm systems

• US 9,875,640 B2
• Filed: 04/07/2016
• Issued: 01/23/2018
• Est. Priority Date: 04/08/2015
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Childs, Lester Dwine, Chatterji, Gautam, Fricaud, Benjamin Hubert, Pardee, George Francis
• Primary Examiner(s): Swarthout, Brent
• Application Number:
  US15/092,890
• Publication Number:
  US 20160300475A1
• Time in Patent Office: 656 Days
• Field of Search: None
• CPC Class Codes: G05B 23/0278 Qualitative, e.g. if-then rules; Fuzzy logic; Lookup tables; Symptomatic search; FMEA
• CPC Class Codes: G08B 25/00 Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems

Abstract

A system and method of managing notifications of a plurality of states of a plant of equipment are provided. The alarm system includes a memory device and one or more processors communicatively coupled to the memory device. The one or more processors are programmed to receive parameters relating to a potential alarm, receive an indication of a plant event from at least one of a plurality of field devices, compare the received indication to the received parameters, and display a notification of the potential alarm as at least one of an event, a diagnostic, an alert, and an alarm based on the comparison and in accordance with the received parameters.

Claims

1. A rationalized process plant alarm system comprising:

a memory device;

one or more processors communicatively coupled to said memory device, said one or more processors programmed to;

receive a set of design parameters relating to a potential alarm;

evaluate the set of design parameters of the potential alarm in a design phase of an alarm rationalization process;

categorize the potential alarm as an event or a diagnostic, which relates to maintenance and diagnosis of the plant, or as an alert or an alarms, which relates to normal or abnormal operations;

prioritize the potential alarm by determining an alarm class for the potential alarm which indicates the urgency of response based on a seriousness of consequences of inaction and an allowable response time;

receive an indication of a plant event from at least one of a plurality of field devices;

compare the received indication to the received set of design parameters; and

display a notification of the potential alarm using the determined alarm class as at least one of an event, a diagnostic, an alert, and an alarm based on the comparison and in accordance with the received set of design parameters.

2. The alarm system of claim 1, wherein the received set of design parameters include at least one of an active condition parameter, which indicates operating conditions for which the potential alarm is applicable, a triggering event parameter, which describes logic that triggers the potential alarm, and an alarm setpoint parameter, which indicates a threshold value that triggers an alarm when exceeded.

3. The alarm system of claim 1, wherein the received set of design parameters include a shelving parameter, which defines a shelving mechanism for the potential alarm, the shelving mechanism is initiated by an operator to temporarily suppress a generated alarm or alert, the shelving parameter includes a maximum duration of a shelve period, the maximum shelf time determined using an allowable response time and an urgency category.

4. The alarm system of claim 1, wherein said one or more processors are programmed to receive set of design parameters relating to a potential alarm during a design phase of an alarm rationalization process, the design phase including at least one of pre-checking of potential alarms in a system to determine if a potential alarm meets a criteria of being an alert or an alarm, defining the potential alarms, determining a relationship of potential alarms within a given system, and determining an operator guidance including a determination of a specific action to take in response to an alarm and an urgency with which an operator needs to act to avoid a consequence of inaction.

5. The alarm system of claim 1, wherein said one or more processors are programmed to categorize potential alarms as Events, Diagnostics, Alerts or Alarms by separating potential alarms into annunciation types based on common requirements.

6. The alarm system of claim 5, wherein the common requirements include at least one of an event annunciation type, a diagnostic annunciation type, an alert annunciation type, an alarm annunciation type, an allowable response time between an annunciation of the alarm and the time an operator must take corrective action to avoid a consequence of inaction, and whether the potential alarm is actionable.