Sample Probes Sample Clauses

Sample Probes. Each sample probe is designed for a specific sample type. There are two types of samples, steam samples and water samples. At times, the steam and water samples are a single or two phases. Thus, the sample probes are designed and specified for the type and phase of the fluid to sample. The specification of the sample probes is found in Table 4 below. Table 4: Station Sample Extraction Points and Sampling Probe Requirements Location Conditions at Sample Extraction Point Sampling Probe Comments Expecte d Max. Temp Operating Pressure Range (MPa abs) Type No. req. (°C) Minimu m Maximu m 1 Condenser Hotwell3 55 > 0.1 > 0.1 Stub 2 or 4 On each hotwell – confirm number For condenser in-leakage. 2 Condensate Polishing Plant (CPP) Inlet (CCP-In) 55 0.2 0.7 Isokinetic Non-EPRI4 1 Replace W1-type probe. Face against direction of flow (i.e. into flow). Indicates corrosion product (CP) pickup & transport from LP steam and condenser. 3 CPP Individual Mixed Bed (MB) Outlets 55 0.5 2 W1 3 3 Service vessels, 1 probe on each. Retain or replace (with same type) after inspection. 3 Number of stubs dependent on condenser configuration and split thereof Location Conditions at Sample Extraction Point Sampling Probe Comments Expected Max. Temp Operating Pressure Range (MPa abs) Type No. req. (°C) Minimum Maximu m 7 Deaerator/Deaerator Inlet 120 - 1 Isokinetic Non-EPRI 1 Replace W1-type probe. Face against direction of flow (i.e. into flow). Mostly for O2 analysis to check deaerator efficiency, but can indicate CP pickup across LP feedtrain. 8 HP Heater Distillates 280 0.4 5.5 Isokinetic EPRI-Type 4 Replace W1-type probe. Face against direction of flow (i.e. into flow). Indicates CP pickup and transport via HP Heater Distillates – major CP source..