In the UK there is no locking with crank handle; indeed the days of "release from signalling panel" are long over and it has been just under a padlock security local to the points (for at least the last 25 years I think).
However other practices vary and I certainly have heard previously that this is the practice in Indian Railways, so if those are the practicees you are adopting for your control tables then do show the interlocking. If using the standard IRSE control Table blank, then you'll need to consider the best way of depicting on it or decide better to apply some general note.
However other practices vary and I certainly have heard previously that this is the practice in Indian Railways, so if those are the practicees you are adopting for your control tables then do show the interlocking. If using the standard IRSE control Table blank, then you'll need to consider the best way of depicting on it or decide better to apply some general note.
(25-04-2013, 08:21 AM)NJK Wrote: Dear Members,
I am studying UK control table for Module 3 IRSE examination. In this I didn't find any locking related to Points crank handle.
I have working experience in Indian railway control table. There we mention for "Signal Control" concern point crank handle key should be in and locked in EKT and also we write the safe condition for crank handle release also. These condition we will implement in logic also. Apart from we are ensuring the safe condition to release the crank handle in degrade mode also (SSI failure)
I enquired few friends who are very familiar in UK signalling but I didn't get clear idea. Kindly clarify to me.
Thanks in advance !!!
Regards,
NJK
PJW