This completes the site, i.e., all 80K (LN2) pumps now have mechanical differential pressure gauges mounted beside the 80K vessels on the same stand used to mount the CDS pressure/electrical pump level and exhaust transducers. These will allow us to have an indication of the 80K pump levels in the event of a power outage or other CDS failure.  

As labeled, 38" H2O equates to 92% full which is the nominal level for the site LN2 (80K) pumps.