There was an accompanying editorial in the Oxford Times of 26 January 2019.
At the moment the details of the pipeline proposal are not published. Here are some of the things we’d be interested to know about:
- The OFAS scheme is designed to increase flood flow though Oxford by 38,000 litres per second. What is the volume of water the HOEG pump(s) will pump per second?
- What size of pump is assumed for this job? How many?
- Where would the pumps be located?
- Will the pumps be secure against flooding themselves, and how would they be accessed for maintenance in a flood?
- What provision is there for intrinsic pump failure?
- If the pumps are electrically powered, how is the risk of failure of the electricity supply during a flood addressed. Would there be generators raised above any flood level with nearby fuel stores accessible during a flood?
- What is the route, how would pipes be put underground, how would the many services in the ground be navigated?
- Construction and disposal of spoil.
- How is downstream risk to Kennington in particular, and possibly also Abingdon, addressed?
- How were the costings were arrived at – what do they include?
[The suggestion of a second (albeit smaller) pipeline to Farmoor would be a very large project in itself and is so speculative and far removed from the present issue that we are not asking further about that.]
We wrote to the group concerned recently, on 25 January, asking if we may see their engineer’s plans and any other details; we look forward to their reply so we can better understand their proposal.