Thanks for the replies L Brown and 2 piper.2 piper:
From what I understand, if 3 tons per sq. inch is equal to 740 bars (transducer) which is 10730 PSI then 3 1/2 tons per sq. inch must be greater than 10640 PSI (transducer). I believe that crusher pressures don't translate directly to transducer PSI and give much lower than true figures if the usual conversion formulae are used.
See L Brown above, viz: "So CIP didn't really increase proof or service pressure standards. All they did was express it in numbers derived from transducers rather than crushers. And the transducer numbers are higher (just as psi values are higher than LUP), which makes it look as if pressures were increased"
I am as usual probably wrong.
All the best
Skeeterbd
