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Module 1 2012 paper. Q1 attempt
#8
(21-08-2017, 10:13 AM)Jerry1237 Wrote: Sections B and C are better but would be more so with a greater safety focus. I would add, soak is not the same as testing.

The first section, A, is far too long. It does not compare and contrast (that is what is asks you to do). Read the question carefully, use the planning time to your advantage and ensure the answer you write is to what the examiners are asking for.

For example:
A single closure means a single set of design whereas stageworks requires many layers of design. This means errors or deferred works can affect design rework potentially meaning changes don't get incorporated or on-site changes are not captured leading to errors or further cancelled work on site.

Stages are not always small, "big bang" not always big. Quoted risks need to be apt for the subject. Arc welding may be an occupational risk but not really appropriate for this question in Mod 1.

Jerry

Talking from (very) recent experience, if you are going to replace part of a large complex RRI interlocking by putting a new RRI in an adjacent REB and therefore need to test routes, point calling and locking and approach locking lookback from the one to the other, do make sure that you have arranged an adequate possession to enable this to be achieved.
   
Also if expecting the testers to cope with doing the task piecemeal in white periods of a few hours each night, do plan it well ahead and produce the design that enables this and clearly shows what is to be booked back into service having been changed and fully tested so that trains can be run safely the next day.  If it is all too complicated to have sorted it out well prior, how is it reasonable to expect those working nights at the coal face to  do it against the deadline of the next day's service..........

Where a circuit is spread over many sheets from fuse to relay coil, do provide all of the relevant sheets even if they are unaffected so that those on site can actually know what any particular cut-in is likely to affect.

Do design the changeover in the old relay room so as to minimise the number of changes, rather than design it with the focus that it is so important that the contacts of relays are arranged in alphabetical order of routes.

..and do fully correlate the job before you start if you want to prevent getting one train into the side of another!
PJW
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Messages In This Thread
Module 1 2012 paper. Q1 attempt - by tfly86 - 15-08-2017, 03:56 PM
RE: Module 1 2012 paper. Q1 attempt - by tfly86 - 17-08-2017, 11:16 AM
RE: Module 1 2012 paper. Q1 attempt - by tfly86 - 18-08-2017, 12:14 PM
RE: Module 1 2012 paper. Q1 attempt - by PJW - 28-08-2017, 08:46 AM
RE: Module 1 2012 paper. Q1 attempt - by PJW - 28-08-2017, 08:46 AM

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