Link a combined wastewater trend to named contributing streams and a traceable investigation record.
A monitor on combined refinery wastewater describes the mixture reaching that point. It does not identify which contributing stream changed. Build the investigation around a dated source map and known operating connections, then link the common trend to targeted upstream observations.
Use the TD-120 for an appropriate continuous monitoring point and review portable TD-550 or TD-560 analysis for collected samples. Model and channel selection depend on the target oil or lighter hydrocarbon; a fluorescence result is not identification of individual BTEX compounds.
The useful record distinguishes what was connected, what was actually sampled and what remains a possible explanation.
List the process and drainage streams feeding the common point during the investigation. Record available valve, diversion and maintenance-log references. Retain the map version so later route changes do not alter the meaning of the earlier record.
Name the process fluid or mixture being considered and the evidence for considering it. Separate an observed upstream change from a suspected source. Retain relevant process-event times without treating timing alone as proof of a connection.
Assign each sample an ID, location, collection time and handling record. Link it to the stream map and operating state. Describe how the selected points answer the investigation question; a single upstream sample need not represent the whole event.
Record confirmed findings, alternative explanations and gaps such as unsampled streams or uncertain mixing times. Name the next investigation action and its owner. Keep the original trend, route map and results together for handover.
A larger upstream reading does not by itself prove that stream caused the common-outlet event. Consider which streams were connected, whether the sampling windows overlap meaningfully and whether the measurements share a suitable basis. Missing route or timing evidence should remain visible in the conclusion.
Where the hydrocarbon mixture changes, review the optical response and calibration with PMA. Preserve the site’s required laboratory method for compound-specific or formal discharge reporting; an operational fluorescence reading does not automatically replace it.
Confirm the target fluid, water matrix and measurement purpose with PMA before specifying the model. Preserve the site’s sampling, analysis and operating procedures.
Continuous monitoring of a suitable hydrocarbon target at a defined process point.
Collected-sample analysis for suitable crude and heavier-oil targets, using the selected preparation and calibration.
A second optical channel supports review of lighter hydrocarbon targets alongside the TD-550 channel.
PMA connects the measurement, installation and operating team. We help you review the application, select suitable instrumentation and plan commissioning, training and ongoing service.
Send PMA the wastewater source map, normal and changing stream connections, suspected oil or fluid targets and proposed sampling locations. Include water-matrix information, available operating records and the investigation or reporting decision the measurements need to support.
Speak to the PMA team about your instruments, reagents or service requirements. Tell us what you need, and we’ll help you find the right next step.
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