Network Control Systems – Human / Machine Interfaces (Standard)


Type of product being suggested:
Standard
Title of product being suggested:
Network control systems – human machine interfaces
Date of suggestion:
22/02/17
Reason for suggestion:
Lack of current standards in this area. Diversity of approaches by different vendors. Simplify and set a baseline for consultation with user groups
Sponsored by RISSB Standing Committee:
TCSSC
Scope:
  • Screen based display orientated
  • Driven by human factors considerations
  • Integration of operator’s desk
  • Excluding signal control specific functionality
  • Alarm colours, sounds and hierarchy
  • Scalable to include signalling, telecommunications, other control functions e.g. field screens
  • Density of screen elements and longitudinal scale
  • Project design development to include screen based equipment
  • Local control equipment in the field
  • Excludes legacy systems including lever frames and hard wired panels; traction power supply and
    other power distribution infrastructure.
Hazard identification:
1
 5.9.1.2 Network control error
2
 9.18.1.8 Ergonomics
3
 9.18.1.9 Interface with existing controls, interlockings and maintenance facilities
4
 9.37.1.3 Incorrect or misleading indications on control systems leading to reliability or safety incidents
5
 9.37.1.5 Indications to some control systems (especially Phoenix) may not be ‘real time’ – leading to incorrect decisions by operators leading to safety incidents
6
 9.44.1.2 Train positions not shown correctly to network controllers
7
 10.5.1.1.8 Inadequate human machine interface
8
 10.5.1.1.2 Incomplete or unclear data

Benefits:

Safety risk
Improve human factors risk of operator errors or omissions.
Manage alarm task prioritisation
Interoperability / harmonisation
Interoperability improved through common interface elements.
Financial
Reduced project time and budget costs due to enhanced operator acceptance