Is it necessary to install a bypass at the end of the steam pipeline?
Thread Content
At the end of the steam pipeline on the user’s side, there is a meter; this meter has to be removed every year for calibration, which affects the user’s production. Question: Is it necessary to install a bypass pipeline? Are there any other methods? How does a bypass pipeline ensure steam metering?
There are two options: one is online calibration of the instrument, and the other is installing an additional gauge
During the table disassembly and maintenance period, the consumption should be calculated based on the previous average daily usage. Installing a secondary line will not affect the normal use by users.
For the master table and sub-tables, during verification, any remaining amount after subtracting the sum of all sub-tables from the value in the master table is considered damaged, and this amount is distributed among the respective sub-tables
For this purpose, a dual-loop flow meter would be the best choice; it’s fine as long as the owner agrees
Another approach seen is to use two flow meters in series, one for the gas supply side and one for the gas consumption side
It also depends on the owner’s opinion, but it’s better to include it anyway
Those who use gas throughout the year don’t really pay much attention to any deviations in flow rate during those verification days; they usually calculate based on the average value
Use two flow meters in series, belonging to two different companies. First, it increases costs; on the other hand, user consent is also required.
This method is practical and should be acceptable to both the steam supplier and the user. During the table disassembly for maintenance, the consumption is calculated based on the average usage over the previous 7 days.
A secondary line is installed on the user side and controlled by a valve; it should remain closed under normal conditions, with the secondary line being activated when measuring with the main pipeline meter. Question: How can we ensure that a secondary line in the off state remains closed?