KA/T 16-2023 in English
VALIDExplosion-proof Iow power γ-γ combination logging instrument in coal mine
- Issued on:2023-10-26
- Implemented on:2024-01-31
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$190.00
$185.00
$185.00
| Standard No: | KA/T 16-2023 |
| Document status: | VALID |
| Title in English: | Explosion-proof Iow power γ-γ combination logging instrument in coal mine |
| Title in Chinese: | 煤矿用防爆低能γ-γ组合测井仪 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2023-10-26 |
| Implemented on: | 2024-01-31 |
| Superseding: |
MT 523-1995 Explosion Protective Low-energy r-r Combined Logging Tool
|
| ICS Classification: | 73.100.99-Other mining equipment |
| Chinese Classification: | D82-Geophysical search equipment |
| Professional Classification: | KA- |
| Related Keywords: | explosion-proof standard
explosion-proof iow power explosion-proof performance requirements explosion-proof certificate explosion-proof structural components |
| Related Topics: | Same coal high-quality mine
|
本文件规定了煤矿用防爆低能γ-γ组合测井仪的产品分类、技术要求、试验方法、检验规则、标志、包装、运输和贮存。
本文件适用于煤矿井下防爆低能γ-γ组合测井仪的设计、制造及检验。
Introduction
Background of Standard Revision and Technological Evolution
This document replaces the MT 523-1995 standard. The main technical upgrades are reflected in:
| Technical Field | Requirements of the 1995 version | Improvements of the 2023 version | Significance of the upgrade |
|---|---|---|---|
| Explosion-proof type | Unspecified explosion-proof level | Ex ib I Mb/Ex ia I Ma | In compliance with the latest explosion-proof standard of GB/T 3836 |
| Environmental adaptability | -20℃~40℃ | -40℃~60℃ (storage) | Expand the application range of extreme working conditions |
| Electrical safety | Creep distance is not specified | New GB/T 3836.4 requirements | Improve intrinsic safety performance |
Analysis of key technical requirements
1. Explosion-proof performance requirements
The synchronous machine and probe of the logging tool must meet the following requirements
- Intrinsically safe explosion-proof mark Ex ib I Mb or Ex ia I Ma
- Surface temperature ≤150℃ (under fault condition)
- Surface resistance of non-metallic shell ≤109Ω
- Electrical clearance and creepage distance comply with GB/T 3836.4-2021
Application case:
When a coal mine uses a γ-γ combined logging instrument in a high gas area, special attention should be paid to the following:
- Regularly test intrinsic safety parameters (output voltage/current)
- Perform annual in-use inspection (Article 7.3 of the standard)
- Keep the battery pack in a discharged state during storage
2. Environmental adaptability indicators
| Test items | Temperature range | Duration | Recovery requirements |
|---|---|---|---|
| Low temperature operation | -5℃ | 2h | Test immediately |
| High temperature storage | 60℃ | 16h | ≥2h recovery |
Implementation suggestions
1. Key points for procurement inspection
- Verify the explosion-proof certificate and mining product safety mark
- Check the wall thickness of the probe tube ≥3mm (Standard 5.7)
- Test insulation resistance ≥10MΩ (new machine)
2. Maintenance precautions
- Perform annual inspection of in-use products (Standard 7.3)
- Long-term storage should be charged regularly (Article 8.4 of the standard)
- Unauthorized modification of explosion-proof structural components is prohibited
Comparison of standard differences
Main changes compared with MT 523-1995:
- Added:Vibration/shock test (Articles 5.14-5.15)
- Reinforced:Enclosure protection level increased to IP54
- Detailed:Intrinsic safety parameter management requirements (Article 5.16)
Sample only — not a preview of KA/T 16-2023
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