Industry: Aerospace and military industry

Integrated solution for gas safety monitoring in aerospace and military industries

Industry Pain Points

Aerospace and military industry is an industry characterized by "high-density, high-reliability, and highly toxic propellants," presenting unique gas risks: ① **liquid hydrogen + liquid oxygen launch site**: leakage of liquid hydrogen tanks (boiling point -253℃) instantly vaporizes and diffuses, easily detonating when exposed to fire; ② **hydrazine/unsymmetrical dimethylhydrazine propellants**: highly toxic + carcinogenic (PC-TWA 0.04 mg/m³, 50 times stricter than phosgene) + spontaneous combustion; ③ **N2O4/nitric acid oxidizer**: strong irritation + spontaneous combustion when in contact with reducing agents; ④ **spacecraft assembly hall/factory building**: ultra-clean environment + no ppb-level VOCs allowed; ⑤ **final assembly test site/rocket engine test stand**: hundreds of tons of combustion products are emitted instantly during test runs; ⑥ **military ammunition/pyrotechnic factory**: nitric acid + nitrates + RDX/TNT vapor + strict anti-static requirements. Regulatory level: aerospace industry is subject to military confidentiality management + national confidentiality law + GJB standards (different from civilian GB), equipment requires military production license + qualification as a weapon equipment manufacturing unit, and ordinary commercial products cannot be directly purchased.

Solution Overview

The military version of the U-Rion solution strictly adheres to GJB standards and weapon equipment manufacturing qualifications for supply: ① **Launch site propellant area**: dedicated ppb-level electrochemical sensors for hydrazine/UDMH/N2O4 (measuring range 0-10 ppm, triggering at PC-TWA 0.04 mg/m³) + infrared camera + laser remote sensing, with redundant triple monitoring within enclosed warehouses; ② **Liquid hydrogen and liquid oxygen filling area**: liquid hydrogen vaporization cloud laser remote sensing + oxygen concentration (O2 > 23% for combustion risk) + low temperature detection + anti-static; ③ **Spacecraft assembly hall**: cleanliness ISO 5/7 + ppb-level VOC + particulate matter + AMC (gaseous molecular pollutants, greatly affecting chips/optics); ④ **Test bed/testing site**: high-speed combustion products + infrared thermal imaging + laser multi-component; ⑤ **Military ammunition warehouse/pyrotechnic factory**: HCN/nitric acid vapor + electrostatic monitoring + explosion-proof Ex d IIB T6 + GJB moisture, mold, and salt spray resistance certifications; ⑥ **Integrated into military SCADA/comprehensive support platform**: all data are transmitted securely on an internal network (not connected to the internet), encrypted with military-grade passwords on the local machine, meeting confidentiality requirements.

## Key Monitoring Nodes

### Propellant filling area
– **Hydrazine / Unsymmetrical dimethyl hydrazine (UDMH)**: electrochemical sensor with ppb sensitivity (PC-TWA 0.04 mg/m³ ≈ 30 ppb)
– **N2O4 / Red Fuming Nitric Acid**: Electrochemical NO2 sensor with a range of 0-50 ppm
– **Liquid Hydrogen Area**: Laser remote sensing for H2 (sensitive to 1 ppm, long-range scanning up to 100m) + oxygen content
– **Liquid Oxygen Zone**: O2 Concentration (21% normal, > 23% risk of combustion assistance, < 19.5% risk of hypoxia)

### Assembly Hall / Clean Room
– VOC ppb-level PID (calibrated in PPB units, targeting silicone, phthalates, formaldehyde, etc.)
– AMC (gaseous molecular contaminants): silicon / boron / sodium / chlorine / sulfur ion chromatography + laser scattering
– Particulate matter 0.1μm / 0.3μm / 0.5μm multi-range (ISO 14644 standard)
– Temperature and humidity ± 0.5℃ / ± 5%RH

### Rocket Engine Test Bench
– High-temperature products during test run: CO + CO2 + NOx + incomplete combustion VOC
– Infrared thermal imaging (temperature field inversion in the testing area)
– Multi-spectral laser (remote analysis of combustion products, distance 50-200m)

### Military Ammunition / Pyrotechnic Factory
– HCN / nitric acid / NO2 (by-products of ammunition manufacturing)
– Electrostatic monitoring (personnel wearing electrostatic discharge wristbands + anti-static clothing + grounding status of the floor)
– Explosion-proof grade Ex d IIB T6 (ammunition dust environment)

## Key Technical Specifications

– Explosion-proof: Ex d IIB T6 (explosive devices + ammunition) + Ex d IIC T6 (liquid hydrogen area)
– Protection: IP67 (outdoor emission site) + salt spray resistance / mold resistance / moisture resistance (GJB three-proofing)
– Range: Hydrazine / UDMH 0-10 ppm (ppb sensitivity)
– Response time: T90 < 10 seconds (highly toxic)
– Operating temperature: -55℃ ~ +85℃ (GJB military wide temperature range)
– Shock resistance: 200g (GJB 150A test)
– Communication: RS485 + military private network (not connected to the Internet)
– Encryption: National Cryptography SM4 / SM2

## Qualifications + Implementation Essentials

1. **Qualification of Weapon Equipment Manufacturing Unit**: This certificate is required to supply goods to the military industry system, covering both first-level and second-level manufacturing
2. **GJB 5000B Software Capability Maturity Certification**: The monitoring platform software is developed in accordance with military standards
3. **Confidentiality Qualification**: Personnel involved in the project must hold national confidentiality level 2/3, and all data must be physically isolated
4. **Lifecycle Support**: Aerospace military equipment has a lifespan of 10-15 years, significantly longer than civilian products, which typically last for 5 years. Therefore, it is necessary to provide long-term spare parts and calibration service commitments
5. **Test Run Data Archiving**: Each test run generates gigabyte-scale data, which is archived and stored for over 30 years in accordance with military requirements

## Regulatory Basis

– GJB 1804A-93 "Propellant Safety Regulations"
– GJB 5234A-2014 "Requirements for Qualification Review of Weapon Equipment Manufacturing Units"
– GJB 150A-2009 "Environmental Testing Methods for Military Equipment Laboratories"
– GB 50493-2019 Detection and Alarm Design (stricter requirements based on civil use)
– China's Confidentiality Law / National Military Standard Series
– ISO 14644 clean room standard (spacecraft assembly hall)

## Applicable Customers

China Aerospace Science and Technology Corporation (First Academy / Fifth Academy / Eighth Academy), China Aerospace Science and Industry Corporation (First Academy / Second Academy / Third Academy / Fourth Academy), various main engine factories / design institutes of China Aviation Industry Corporation; shipyards / ordnance equipment factories of China Shipbuilding Industry Corporation; General Armament Department of the People's Liberation Army / logistics systems of the Navy / Air Force; commercial aerospace companies (Blue Arrow / Xinghe Power / Galaxy Aerospace / Zhongke Aerospace, etc.); aerospace / ordnance engineering laboratories of universities.

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