The call comes in when the schedule is already tight. A superintendent is staring at a utility letter, an inspector is due, the concrete crew is waiting, and the building still isn't on gas. That's where outage prevention stops being a theoretical...
The Wobbe Index is the key check for whether one gas can replace another safely in the same equipment. For typical natural gas, a heating value of about 39 MJ/Nm³ and a specific gravity of 0.59 produce a Wobbe index of about 51 MJ/Nm³, which is why operators use it to...
