12-08-2010, 10:54 AM
I will be taking a study gtroup session for the London Mod1 group on the evening of Wednesday 18th August 2010.
Itinery:
What is ERTMS - 15 mins
Case Study of Hazard Management Process for a new Cab Signalling System on an existing railway - 20 minutes.
Past Paper 2004 Q3 - Your answers and discussion.
Question 3
A railway has decided to introduce a new ATP system. Three systems are available for
selection:
The first has been developed as an overlay system with a Safety Integrity Level (SIL) of 3. The driver is expected to drive in accordance with the existing (proven) lineside signalling system and the ATP system provides no indications or warnings to the driver prior to brake intervention.
The second has been developed as a SIL 4 overlay system. The driver is expected to drive in accordance with the existing (proven) lineside signalling system, but the ATP system also provides indications of permitted speed and movement authority, along with warnings to the driver prior to brake intervention.
The third system has also been developed as a SIL 4 system, but is intended to operate without lineside signals. It provides indications of permitted speed and movement authority, along with warnings to the driver prior to brake intervention.
Compare and contrast the safety implications of each of these systems. In your answer note any significant implications that the systems may impose on operating rules.
Past Paper 2005 - Question 6
A two track standard gauge railway operates a freight service of up to 6 trains per hour, in each direction, between cities
Itinery:
What is ERTMS - 15 mins
Case Study of Hazard Management Process for a new Cab Signalling System on an existing railway - 20 minutes.
Past Paper 2004 Q3 - Your answers and discussion.
Question 3
A railway has decided to introduce a new ATP system. Three systems are available for
selection:
The first has been developed as an overlay system with a Safety Integrity Level (SIL) of 3. The driver is expected to drive in accordance with the existing (proven) lineside signalling system and the ATP system provides no indications or warnings to the driver prior to brake intervention.
The second has been developed as a SIL 4 overlay system. The driver is expected to drive in accordance with the existing (proven) lineside signalling system, but the ATP system also provides indications of permitted speed and movement authority, along with warnings to the driver prior to brake intervention.
The third system has also been developed as a SIL 4 system, but is intended to operate without lineside signals. It provides indications of permitted speed and movement authority, along with warnings to the driver prior to brake intervention.
Compare and contrast the safety implications of each of these systems. In your answer note any significant implications that the systems may impose on operating rules.
Past Paper 2005 - Question 6
A two track standard gauge railway operates a freight service of up to 6 trains per hour, in each direction, between cities