EJ/T 895-2016 in English
VALIDSubsampling of Uranium Hexafluoride
- Issued on:2016-12-14
- Implemented on:2017-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$190.00
$185.00
$185.00
Introduction
Background of Standard Technology Evolution
This standard replaces the 1994 version of EJ/T 895. The main technical upgrades are reflected in:
- Container type expansion: 4 new types of sampling container specifications
- Safety enhancement: A new chapter on occupational health hazard prevention and control
- Process optimization: Add key steps such as valve cavity flushing
Technical requirements for core equipment
| Equipment type | Material requirements | Temperature range | Typical use |
|---|---|---|---|
| Large sample container | Monel alloy | 95±5℃ | Original sample storage |
| U-type sampler | 00Cr17Ni14Mo2 stainless steel | Liquid nitrogen freezing | Uranium isotope analysis |
| P10 sampling tube | Polychlorotrifluoroethylene | 75±10℃ | Purity/impurity detection |
Sampling Scheme Selection Guide
Typical application scenarios:
Uranium isotope analysis: Using Gas uranium isotope sampler, sampling volume ≥3g, the system needs to be pre-passivated for 12 hours
Fission product detection: Use polytrifluorochloroethylene condensation cup, sampling volume ≥50g, and liquid nitrogen freezing for 15 minutes
Key points for safe operation
- Ventilation system air volume must be＞10000m³/h
- All contact surfaces must be kept dry and free of residue
- Pressure test needs to be stepped up according to a 0.07MPa gradient
- Vacuum system leakage rate ≤1.3×10⁻⁷Pa·m³/s
Implementation Suggestions
It is recommended to establish a two-person review system for sample splitting operations, with key monitoring:
- System passivation time (≥12h)
- Boiling water bath heating cycle (30min×3 times)
- Liquid nitrogen freezing time (6-15min)
Sample only — not a preview of EJ/T 895-2016
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
EJ/T 808-1994 in English
Design Guidelines for Uranium Fuel Element Plants
1994-07-18
