Api Rp 586 [exclusive]

Refinery tank farm (50 tanks, 200 valves, 50 flanges). Goal: Identify and quantify methane leaks >10 g/hr for internal reduction target. Using API RP 586 QOGI approach:

It explicitly pairs targeted electromagnetic and ultrasonic methods to the specific geometry of shell-and-tube or air-cooled units. api rp 586

The American Petroleum Institute (API) suite of fixed equipment standards—such as API 510 , API 570 , and API RP 571 —traditionally dictates what damage mechanisms look like and when to inspect them. However, plant inspectors frequently struggled to find standardized, granular guidance on how to execute Non-Destructive Evaluation (NDE) for those mechanisms. Refinery tank farm (50 tanks, 200 valves, 50 flanges)

| Technology | Principle | Application | |------------|-----------|--------------| | | Pulsed laser at two wavelengths (on/off VOC absorption peak) to create 3D concentration maps. | Large facility surveys, flux quantification from areas (tank farms, flares). | | OGI with quantification (QOGI) | Infrared camera visualizes gas plumes; software quantifies leak rate using plume velocity, path length, and atmospheric conditions. | Component-level leaks (valves, flanges, pumps) and small area surveys. | | TDLAS (open-path) | Fixed laser beam across a fence line or process unit; measures integrated concentration along the path. | Continuous fence-line monitoring, early warning. | The American Petroleum Institute (API) suite of fixed