Ann: Walyering gas field commences production, page-90

Hi twoUp2,

Generally, plant capacity is designed at a reliability of say 90-95%. This means is that the actual production capacity will be greater than 33 TJ/d (say 35 TJ/d) such that the production rates will average out to 33TJ/d annually, accounting for 5-10% of the year being shut down for maintenance, etc.
This is why you might see company's report production above nameplate capacity. For example,


The Parmelia gas pipeline should have a maximum allowable inert specification of approx. 5% (this is the case for the DBNGP). This will primarily be CO2 and N2. I am not sure of the exact specification for Walyering but a certain level of inerts are acceptable. Pipeline gas specifications is normally based on:
- higher heating value, HHV - the measure of how much energy is released when burnt, used to calculated TJ/d
- Max water specification
- Hydrocarbon dew point specification
- Max inerts concentration (CO2, N2, etc)
- Max H2S level