PULUODY PLD-IGS-2025 Portable Inert Gas Sampling System

Overview

The PULUODY PLD-IGS-2025 Portable Inert Gas Sampling System is an engineered solution for the safe, contamination-free collection and transport of inert and radioinert gases—including xenon-133, krypton-85, and argon-41—in regulated industrial and nuclear environments. Based on a sealed, pressure-driven sampling principle, the system operates via active vacuum aspiration to achieve quantitative gas capture under controlled negative pressure, minimizing ambient air ingress and residual carryover. Its core architecture centers on a single-use–compatible, reusable 1 L high-integrity stainless steel pressure vessel rated to ≥1.3 MPa, enabling direct transfer to gamma spectrometry systems without intermediate transfer steps. The device is not a gas analyzer itself but functions as a metrologically traceable sampling interface—designed to preserve sample integrity from point-of-source acquisition through laboratory analysis—making it suitable for applications requiring chain-of-custody documentation and regulatory audit readiness.

Key Features

• Robust 316L stainless steel construction throughout—vessel, valves, and manifold—ensuring corrosion resistance against acidic, alkaline, and radiolytically active gas streams.
• Integrated intelligent vacuum pump with programmable shutoff at 1.3 MPa; includes dual-stage overpressure protection: automatic power cutoff plus mechanical pressure relief activation.
• One-touch cyclic evacuation mode minimizes dead-volume retention and cross-sample contamination—critical for sequential sampling in multi-point monitoring campaigns.
• Ergonomic portable form factor (net weight < 8.2 kg) with integrated carrying handle and shock-absorbing base, validated for field deployment in Class II hazardous locations per IEC 60079-0.
• Leak-tight isolation valve with metal-to-metal sealing (helium leak rate ≤1×10⁻⁹ mbar·L/s) compliant with ISO 15848-1 for fugitive emission control verification.

Sample Compatibility & Compliance

The PLD-IGS-2025 is validated for sampling helium (He), neon (Ne), argon (Ar), krypton (Kr), and xenon (Xe), including their radioactive isotopes, across temperature ranges of −20 °C to +50 °C. It meets material compatibility requirements outlined in ASTM D6159–22 for effluent gas sampling and supports compliance with IAEA SSG-24 Annex III (Sampling Protocols for Radioactive Noble Gases). When used in conjunction with certified gamma spectrometry systems (e.g., HPGe detectors), the system enables quantitative nuclide-specific activity determination per ISO/IEC 17025–2017 accredited methods. All wetted components are passivated per ASTM A967 and documented in the device’s Certificate of Conformance (CoC), available upon request.

Software & Data Management

While the PLD-IGS-2025 is hardware-only and does not include embedded firmware or onboard data logging, its operational sequence integrates seamlessly into laboratory information management systems (LIMS) via standardized barcode labeling of sample vessels. Each unit ships with a unique serial-numbered calibration log and pressure-test certificate traceable to NIM (National Institute of Metrology, China). For GLP/GMP environments, users may pair the system with external digital pressure recorders (e.g., Druck DPI 620) that support 21 CFR Part 11–compliant electronic signatures and audit trails. Full traceability—including operator ID, sampling timestamp, source location tag, and final pressure reading—is maintained through optional QR-coded sample tags compatible with common LIMS platforms.

Applications

• Nuclear Facilities: Routine stack monitoring of noble gas emissions from reactor coolant systems, spent fuel pool ventilation, and off-gas treatment lines—aligned with NRC Regulatory Guide 1.21 and EURATOM Basic Safety Standards Directive 2013/59.
• Petrochemical Process Monitoring: Integrity verification of closed-loop purge systems, detection of inert gas dilution during catalyst regeneration, and leak localization in cryogenic argon/xenon recovery units.
• Environmental Emergency Response: Rapid deployment for post-incident noble gas mapping following radiological dispersal events or containment breaches—supporting EPA Method IO-3.2 and IAEA TECDOC-1873 protocols.
• Research Laboratories: Controlled gas standard preparation for calibrating multi-channel analyzers (e.g., ORTEC Maestro, Canberra Genie 2000), especially where matrix-matched reference materials are required.

FAQ

Is the PLD-IGS-2025 certified for use in classified nuclear facilities?
Yes—its design complies with DOE Order 420.1C (Facility Safety) and EPRI TR-102325 requirements for non-intrusive sampling hardware. Formal site-specific authorization remains subject to facility safety review.
Can the vessel be reused after radiological exposure?
Yes—316L stainless steel allows decontamination via citric acid passivation and swab testing per ANSI N13.1; full radiological release documentation must accompany reuse.
Does the system support automated pressure ramping for graded sampling?
No—the pump operates in fixed-threshold mode only. Graded sampling requires external programmable vacuum controllers interfaced via the ¼″ NPT process port.
What is the maximum allowable moisture content in sampled gas streams?
For optimal long-term vessel integrity, inlet gas dew point should not exceed −40 °C (per ISO 8573-1 Class 2); optional inline desiccant cartridges are available as accessories.
Is third-party calibration available?
Yes—certified pressure calibration (up to 2.0 MPa) and helium leak testing services are offered by PULUODY’s ISO/IEC 17025-accredited service center in Xi’an, with NIST-traceable certificates issued.