Transcript Slide 1
Bridge Alarm Management Atle Bulukin - Det Norske Veritas MNBNA379 March 2009 Bridge Alarm Management Motivation: The lack of Alarm management Unimportant alarms ”blindness” Inconsistent and confusing Alarm Presentation and Handling © Det Norske Veritas AS. All rights reserved Safety risk Distractions and alarm 07 July 2015 Slide 2 Bridge Alarm Management Outline: Current International Standards Current DNV regulations Future International Standard Bridge Alarm Management Current IMO standards: IMO’s Code on alarm and indicators (Res. A.830(19)) IMO performance standard for Bridge Navigational Watch Alarm Systems –BNWAS (MSC 128(75)) IMO Guidelines on ergonomic criteria for bridge equipment and layout (MSC/Circ.982) © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 4 Bridge Alarm Management Current IMO standards (cont.): IMO performance standards for the presentation of navigation-related information on shipborne navigational displays (Res. MSC.191(79)): Purpose – harmonizing presentation on navigation displays - Specifies how alarms shall be presented on individual equipment - Visual indication – colours to be used and flashing/ non-flashing - Audible signals © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 5 Bridge Alarm Management DNV’s NAUT Notations – General: Objective – Reduce risk of failure in bridge operations by addressing the total bridge system - Technical system, Human operator, Man and Machine Interface, The Procedures Verification of compliance Voluntary Based on studies of numerous navigation-related casualties. Centralized handling of certain important navigation-related alarms was required in NAUT rules already 20 years ago. Relevant notations: NAUT-AW, NAUT-OC and NAUT-OSV © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 6 Bridge Alarm Management NAUT Notations Bridge Alarm Management DNV’s NAUT Notations – NAUT-AW and NAUT-OC: Central alarm panel - Workstations for Traffic Surveillance/ Manoeuvring and Workstation for Navigation. - May be integrated in Conning. - Indicate the source (equipment) of the alarm. Cancellation - Source (individual equipment) - Central alarm panel – i.e. single operator action. Connected to all major navigation systems © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 8 Bridge Alarm Management WS for Traffic Surveillance/Manouvering and WS for Nav Bridge Alarm Management DNV’s NAUT Notations – NAUT-OSV: Central alarm panel required for - Workstations for Navigation, Navigation support and workstation for Ship Handling. - May be integrated in Conning. Centralization of ALL audible alarm and warnings on the bridge. Equipment may be exempted: - Only alarm when continuously operated - Equipment or slave units is located at all workstations where central alarm panel is required. © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 10 Bridge Alarm Management Digital alarm interfaces: BAM is heavily dependant on interfacing Lack of appropriate alarm interfacing Individual equipment Central alarm panel Major obstacle Relay contacts most common interfacing - Limited possibilities - Insufficient for complex alarm interfacing. NAUT-OSV - Digital alarm interfaces according to IEC 61162-1 (serial interfaces) - Alarm (ALR) and Acknowledge (ACK © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 11 Bridge Alarm Management Digital alarm interfaces (cont.): The alarm and acknowledge sentences has existed for several years Few manufacturers are using them. - Lack of detailed instructions on the exchange of sentences - New IEC document IEC 80/520/INF (2008). Until recently – No requirement of use Now – Requirement from DNV (NAUT-OSV) and IMO (Radars, Galileo and lantern controllers) © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 12 Bridge Alarm Management Future IMO Standards: Currently - IMO developing Bridge ALERT Management standard - Latest draft - January 2009. Addresses all alerts presented on and transferred to the bridge = NAUT-OSV Two main parts: General part: CAM-HMI part: Engine bridge Engine bridge GPS alarm unit GMDSS GPS GMDSS CAM-HMI CAM-HMI © Det Norske Veritas AS. All rights reserved alarm unit 07 July 2015 Slide 13 Bridge Alarm Management Future IMO Standards – General part: Alerts are classified into the following “priorities”: - Emergency alarm - Immediate danger to life or ship. - Audible signal until acknowledged. - Example: fire alarm. - Alarm - Immediate attention needed to avoid hazard and maintain safe state of the ship. - Audible signal until acknowledged. - Example: collision/ ARPA alarm. - Warning - Not immediately hazardous, but may become so. - Single audible signal - Example: equipment failure. - Caution - Informative. Condition or situation that the officer should be aware of. - No audible signal - Example: Sailing on un-official charts (Non ENC’s) in ECDIS © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 14 Bridge Alarm Management Future IMO Standards – General part (cont.): The draft standard further defines 3 alert categories: - Category A - Alerts where a graphical/ situation display is needed to evaluate the risk. - Can be silenced on both Central Alert unit and equipment giving alert, but acknowledged only on equipment where the risk can be evaluated. - Examples: collision and grounding alarms. - Category B - Alerts where additional information is not needed to evaluate the risk. - Can be silenced and acknowledged on both Central Alert unit and on equipment giving alert. - Examples: failure alarms. - Category C - Alerts that cannot be acknowledged on the bridge. Normally alerts transferred to the bridge e.g. from engine or cargo control rooms. - Can be silenced on Central Alert unit, but cannot be acknowledged on bridge. - Example: certain alerts from the engine. © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 15 Bridge Alarm Management Future IMO Standards – CAM-HMI: Can be integrated into other equipment All alert should be displayed on the CAM-HMI. Duplicates the audible signal Alert messages should be complete, including aids for decision making. The CAM-HMI may handle aggregated alerts In case of failure, a CAM-HMI back-up or individual alert presentation/ handling is required. Advanced functionality network communication needed? © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 16 Bridge Alarm Management Q&A © Det Norske Veritas AS. All rights reserved 07 July 2015 Slide 18