Applied Markets
Installed Gases
Project Details
Marine and Power Plant Facility — H₂, NH₃, and CH₄ Gas Leak Survey
This deployment brought GasTiger 2000 portable multi-gas detectors configured for H₂ (hydrogen), NH₃ (ammonia), and CH₄ (methane) to a marine plant facility in Dangjin, Chungcheongnam-do, to verify gas leakage from process piping and equipment. Marine and power generation plants frequently operate hydrogen fuel systems, ammonia-based SCR denitrification units, and LNG/natural gas (CH₄) piping in proximity, making simultaneous three-gas monitoring essential for a comprehensive leak survey in a single site visit.
Delivery Specifications
| Specification | Details |
|---|---|
| Model | GasTiger 2000 portable multi-gas detector |
| Sensor configuration | H₂ (hydrogen) + NH₃ (ammonia) + CH₄ (methane) |
| Measurement purpose | Leak point identification at pipe joints, valves, and fittings |
| Detection method | Internal pump sampling — targeted point measurement at suspected leak locations |
| Location | Dangjin, Chungcheongnam-do |
Hazard Characteristics of the Three Target Gases
- H₂ (Hydrogen) — LEL 4% (40,000 ppm). Colorless and odorless — undetectable by human senses. Fourteen times lighter than air; accumulates at ceiling level. Extremely low ignition energy (0.017 mJ) — ignites from static discharge
- NH₃ (Ammonia) — TWA 25 ppm, STEL 35 ppm. Pungent odor provides initial warning, but olfactory fatigue occurs at elevated concentrations. Used as a reducing agent in SCR denitrification systems aboard ships and at power plants
- CH₄ (Methane) — LEL 5% (50,000 ppm). Primary component of LNG and natural gas. Colorless and odorless. Explosive range: 4–15%. Mandatory leak monitoring for plant and marine vessel fuel systems
Using GasTiger 2000 Pump Sampling for Leak Surveys
- Position the probe hose at suspected leak points — pipe flanges, valve packing, fittings — and draw gas samples for targeted concentration measurement
- Mark and log points where concentration elevations are detected → use findings to plan repair and component replacement schedules
- Incorporate GasTiger 2000 leak surveys into routine planned maintenance to identify leaks before they escalate to incidents
Frequently Asked Questions
Can H₂, NH₃, and CH₄ be measured simultaneously from a single GasTiger 2000?
Yes. GasTiger 2000 accommodates up to four sensors simultaneously, allowing H₂, NH₃, and CH₄ sensors to be installed in a single unit. A single walkthrough inspection covers all three gases at each measurement point, significantly improving the efficiency of leak survey operations.
Are there special precautions for hydrogen leak detection?
Hydrogen is approximately fourteen times lighter than air and rapidly accumulates at ceiling level. Leak survey points should prioritize upper pipe sections and areas near the ceiling. The extremely low minimum ignition energy of hydrogen (0.017 mJ) means that even static discharge during measurement operations poses an ignition risk — anti-static protocols should be observed.
Why is NH₃ leakage particularly hazardous in power plant and marine SCR systems?
Ammonia has a low occupational exposure limit (TWA 25 ppm) and causes pulmonary edema at high concentrations. SCR denitrification systems use large volumes of ammonia or urea solution; a leak exposes workers to toxic concentrations and can cause secondary damage through pipe corrosion and environmental contamination.
Should an LEL sensor or a dedicated CH₄ sensor be used for methane detection?
A catalytic bead LEL sensor detects CH₄ and other combustible gases in % LEL units, making it suitable for explosion risk assessment. A dedicated NDIR (infrared) CH₄ sensor provides accurate ppm or % vol concentration measurement, making it the better choice for leak source tracing and concentration quantification. The two approaches can also be combined within the GasTiger 2000's four-slot configuration.
Does the high humidity and salinity of a marine environment affect detector performance?
Marine environments can accelerate electrochemical sensor degradation through moisture ingress and salt contamination. Storing the detector in a dry environment after use, maintaining a regular calibration schedule, and adding a moisture/particulate pretreatment module where conditions are severe are the recommended practices for maintaining measurement reliability in marine applications.
#MarinePlantGasLeak #H2NH3CH4Detector #GasTiger2000 #HydrogenAmmoniaMethaneSurvey #LeakSurvey #PowerPlantSafety #DangjinDelivery #PortableMultiGasDetector #WANDIKorea #VPEKorea
