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NB/T 11449-2023 English PDF

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US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
NB/T 11449-2023: Test method of pipeline gas sensor for mine
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 11449-2023	259	Add to Cart	3 days	Test method of pipeline gas sensor for mine	Valid

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MT/T 1041.4 MT/T 1078 MT/T 1041.1 NB/T 11448 NB/T 11452 NB/T 11447

Basic data

Standard ID: NB/T 11449-2023 (NB/T11449-2023)
Description (Translated English): Test method of pipeline gas sensor for mine
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: D98
Word Count Estimation: 13,170
Date of Issue: 2023-12-28
Date of Implementation: 2024-06-28
Issuing agency(ies): National Energy Administration

NB/T 11449-2023: Test method of pipeline gas sensor for mine

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29.260.20 CCSD98 Energy Industry Standards of the People's Republic of China Test methods for gas sensors in mining pipelines Released on 2023-12-28 2024-06-28 implementation The National Energy Administration released

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test conditions 2 5 Main test instruments 2 6 Appearance and structure inspection 3 7 Stability and basic error of displayed value 3 8 Operating voltage range test 3 9 Transmission distance 3 10 Response time determination 4 11 Alarm function test 4 12 Insulation resistance test 4 13 Dielectric strength test 4 14 Pipeline pressure test 4 15 Determination of pipeline working stability 5 16 Dust concentration impact test 5 17 Wind speed effect test 5 18 Operating temperature test 5 19 Storage temperature test 5 20 Cyclic damp heat test 6 21 Vibration test 6 22 Impact test 6 23 Drop test 6 24 Anti-interference test 6 25 Explosion-proof test 6 Appendix A (Informative) Test equipment for pipelines 8

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Coal Industry Association. This document is under the jurisdiction of the Coal Industry Coal Mine Safety Standardization Technical Committee. This document was drafted by. Fushun China Coal Technology and Engineering Testing Center Co., Ltd., Liaoning Huake China Coal Equipment Co., Ltd., Changchun East Coal High-tech Co., Ltd., China Coal Technology and Engineering Group Shenyang Research Institute Co., Ltd., and National Safety Marking Center for Mining Products Co., Ltd. The main drafters of this document are. Zou Xiaoxu, Ma Long, Li Zhenxin, Zheng Yongde, Zhang Guoyu, Liu Yiping, Qian Xu, Li Zhe, Li Zhongqiang, Li Zhifu, Chang Lin, Guo Changna, Liu Lili, Zhang Qiulin, Qi Wenting, Wu Beiping, Pan Yanan. Test methods for gas sensors in mining pipelines

1 Scope

This document specifies the test conditions and test methods for mining pipeline gas sensors. This document is applicable to the test of mining pipeline gas sensors used in underground coal mines, open-pit coal mines and other workplaces.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in this document. For documents with no date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature GB/T 2423.4-2008 Environmental testing for electric and electronic products Part 2.Test methods Test Db. Cyclic damp heat (12h 12h cycle) GB/T 2423.5-2019 Environmental testing Part 2.Test method Test Ea and guidance. Impact GB/T 2423.7-2018 Environmental testing Part 2.Test methods Test Ec. Impact caused by rough operation (mainly used for Equipment type sample) GB/T 2423.10-2019 Environmental testing Part 2.Test methods Test Fc. Vibration (sinusoidal) GB/T 3836.1-2021 Explosive atmospheres Part 1.General requirements for equipment GB/T 3836.2-2021 Explosive atmospheres Part 2.Equipment protected by flameproof enclosure "d" GB/T 3836.3-2021 Explosive atmospheres Part 3.Equipment protected by increased safety "e" GB/T 3836.4-2021 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i" GB/T 4208-2017 Enclosure protection degree (IP code) GB/T 17626.3-2023 Electromagnetic compatibility test and measurement technology Part 3.Radio frequency electromagnetic field radiation immunity test GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test GB/T 17626.5-2019 Electromagnetic compatibility test and measurement technology surge (impact) immunity test MT/T 210-1990 Basic test methods for electrical and electronic products used for communication, detection and control in coal mines MT/T 772-1998 Main performance test methods of coal mine monitoring system

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Sensors that continuously monitor gas concentration in mine gas extraction pipelines. 3.2 A test device that can simulate gases such as methane, carbon monoxide, and environmental conditions such as pressure and wind speed in the gas extraction pipeline when it is working. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 11449-2023_English be delivered?

Answer: Upon your order, we will start to translate NB/T 11449-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of NB/T 11449-2023_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 11449-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.