So on Wednesday, because I didn't walk away from a particular meeting, it emerged that they had not done a p&id diagram for the pst area.
I also identified a major problem in that we need to enlarge an orifice in the filter distribution chamber but this would require men to enter an unsafe confined space. The alternatives are
1) leave it as it is and put up with a bank of poorly performing filters continuing to perform badly
2) reconstruct the entire chamber ££££££ but this would be the best hydraulic solution.
3) supplement the orifice with an external pipe - well it would be two big ones that would need supporting piles in an area congested by pipework
4) extend the existing chamber- same problem with the piles.
Somits nice to know that it IS worth turning up for work occasionally.
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