Dear Andrew,

Perhaps I couldn't communicate you correctly; from the 400 NB welded body strainer assembly drawing, I had taken only the strainer element weight of 25 kg as the weight of the whole strainer assembly. So, the error was not that small! Moreover, this is a real event of 1986,
Occurring very near to our Holy Shrine of Kashi Viswanath in India!

Anyway I admire your straightforward approach.
Please don't believe what others tell - ask, when in doubt.

But, my point in the message was that we all make errors in work; sometimes we get caught, sometimes not; if we correct the same, when detected even by self, we don't become cheap or small, at least in our own conscience.

regards,
sam