GB 19081-2025 PDF English
US$275.00 · In stock · Download in 9 secondsGB 19081-2025: Safety specification for dust explosion prevention in feed processing system Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB 19081: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 19081-2025 | English | 275 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Safety specification for dust explosion prevention in feed processing system
| Valid |
| GB 19081-2008 | English | 75 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Safety Regulations for Dust Explosion Prevention in Feed Processing System
| Valid |
| GB 19081-2003 | English | 439 |
Add to Cart
|
4 days
|
Safety regulations dust explosion for prevention and protection in the feed processing system
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB 19081-2025
GB 19081-2025: Safety specification for dust explosion prevention in feed processing system---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB19081-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.230
CCS C 67
Replacing GB 19081-2008
Safety Specification for Dust Explosion Prevention in Feed
Processing System
Issued on: JANUARY 24, 2025
Implemented on: FEBRUARY 1, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 6
4 Zoning and Scope of Feed Dust Explosion Hazardous Area... 8
5 General Requirements... 8
6 Building (structure) Requirements... 10
6.1 General Requirements... 10
6.2 Floors... 10
6.3 Walls... 10
7 Process System and Equipment Requirements... 10
7.1 General Requirements... 10
7.2 Bucket Elevators... 11
7.3 Chutes... 12
7.4 Screw Conveyors and Scraper Conveyors... 12
7.5 Bin Dischargers... 12
7.6 Magnetic Separation Equipment... 13
7.7 Grinders... 13
7.8 Batching Scales, Mixers and Buffer Buckets... 13
7.9 Heating Devices... 13
8 Electrical Requirements... 14
8.1 General Requirements... 14
8.2 Electrical Equipment... 14
8.3 Electrical Circuits... 15
9 Requirements for Dust Removal and Pneumatic Conveying Systems... 15
10 Requirements for Explosion Control Measures... 17
10.1 General Requirements... 17
10.2 Explosion Venting... 17
10.3 Inerting... 18
10.4 Explosion Isolation... 18
11 Requirements for Operation Safety Management... 18
12 Verification Methods... 20
Safety Specification for Dust Explosion Prevention in Feed
Processing System
1 Scope
This document specifies the zoning and scope of dust explosion hazardous area, overall
requirements, building (structure) requirements, process system and equipment requirements,
electrical requirements, dust removal and pneumatic conveying system requirements, explosion
control measures, and operation safety management requirements for the feed processing
system. It also describes the corresponding verification methods.
This document applies to the design, operation and safety management of the feed processing
system involving combustible dust explosion hazards.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB 12158 General Guideline for Preventing Electrostatic Accidents
GB 15577 Safety Regulations for Dust Explosion Preventing and Protection
GB/T 15604 Terminology for Dust Explosion Prevention
GB/T 15605 Guide for Pressure Venting of Dust Explosions
GB/T 26888 Grain and Oil Machinery - Magnetic Separator
GB/T 37241 Guide on Inerting for the Prevention of Explosions
GB 50016 Code of Design on Building Fire Protection and Prevention
GB 50057 Design Code for Protection of Structures against Lightning
GB 50058 Code for Design of Electrical Installations in Explosive Atmospheres
GB 55037 General Specification for Building Fire Protection
3 Terms and Definitions
The terms and definitions defined in GB/T 15604 and the following terms and definitions are
clouds may occur in the air.
[source. GB/T 3836.35-2021, 3.25.2]
3.9 Zone 22
During normal operation, a location where an explosive dust atmosphere in the form of dust
clouds is unlikely to occur in the air, or if it does occur, but it will only occur for a short period
of time.
NOTE. the possibility of explosive dust clouds arising from the dust layer also needs to be
considered.
[source. GB/T 3836.35-2021, 3.25.3]
4 Zoning and Scope of Feed Dust Explosion Hazardous Area
4.1 Based on the frequency and duration of the explosive dust atmosphere of feed dust, the dust
explosion hazardous area of the feed processing system shall be divided into Zone 20, Zone 21
and Zone 22.
4.2 Based on conditions such as the process, feed characteristics, location of feed dust release
sources, amount and possibility of dust release, explosion conditions, ventilation and dust
removal, and site structure and layout, the zoning and scope of feed dust explosion hazardous
area shall be determined. Examples of the zoning are provided in Appendix A.
4.3 Whenever changes occur in the process, feeds, equipment, site structure and layout, or work
organization mode, the scope and class of dust explosion hazardous area shall be re-assessed,
re-defined and re-zoned.
4.4 Throughout the entire operation, the zoning and instruction files shall be documented, and
regular dynamic assessments of the process hazards and zoning shall be conducted.
4.5 When the zoning and scope of the feed dust explosion hazardous area change, timely
technical and management measures shall be implemented to ensure that the equipment and
facilities within the changed area meet the requirements for dust explosion protection.
5 General Requirements
5.1 The design of the feed processing system shall adhere to the principle of holistic protection.
Design documents shall clearly describe the zoning of feed dust explosion hazardous area in
the design, and the dust explosion prevention measures implemented in terms of building
structure, process selection, equipment model selection and layout, dust control, electrical
engineering and management, etc.
5.2 Process pipeline and dust removal ductwork shall not pass through non-hazardous areas or
6 Building (structure) Requirements
6.1 General Requirements
6.1.1 Fire protection design for buildings shall comply with the provisions of GB 50016 and
GB 55037.
6.1.2 The location of the distribution room shall ensure that the system power supply can be
quickly shut off in the event of a dust explosion and meet the requirements for firefighting and
evacuation lighting.
6.1.3 Where there are dust release sources within 10 meters around the control room or
distribution room, dust-proof measures shall be implemented on doors, windows and openings,
and ventilation devices shall be equipped with dust filters.
6.1.4 For silo clusters consisting of multiple silos, each silo shall be independently sealed, with
no connecting holes. Each silo shall be equipped with a manhole or cleanout opening, and dust
shall be prevented from escaping from the silo.
6.1.5 Wall and floor openings within the feed dust explosion hazardous area shall be sealed
after equipment installation is completed.
6.1.6 Explosion venting doors shall open outward.
6.2 Floors
6.2.1 The floors of warehouses and feed processing workshops shall be flat, smooth, and easy
to clean.
6.2.2 When insulating materials are used as the entire surface layer of the floor, anti-static
measures shall be implemented.
6.3 Walls
6.3.1 The fire resistance rating of the walls of the feed processing system shall comply with the
provisions of GB 50016.
6.3.2 The interior surfaces of the building and the surface of its components shall be smooth,
flat, and easy to clean.
7 Process System and Equipment Requirements
7.1 General Requirements
7.1.1 Explosion-proof measures shall be implemented for machinery and equipment used in the
feed dust explosion hazardous area.
7.1.2 Non-metallic materials and wear-resistant liners used inside silos, equipment, and
pipelines that come into contact with feed materials and dust shall be anti-static materials and
grounded in accordance with the requirements of GB 12158.
7.1.3 The interior walls of the equipment shall be flat and smooth, and the internal structural
components shall be impervious to dust accumulation and easy to clean.
7.1.4 The equipment enclosure shall be made of non-combustible materials.
7.1.5 The machine enclosure, outer cover, machine body, observation windows (doors),
overhaul windows (doors), chutes, and pipelines shall be tightly and firmly connected.
7.1.6 Effective dust control measures shall be implemented for open chutes (troughs) and
equipment.
7.1.7 The conveyor belts of conveying equipment shall be equipped with tensioning devices.
7.1.8 The moving components of the equipment shall smoothly operate, without scraping,
colliding, jamming or rubbing.
7.1.9 The equipment’s bearings and slideways shall be kept clear of the feeding flow and
prevent dust accumulation.
7.2 Bucket Elevators
7.2.1 Bucket elevators with a risk of dust explosion shall adopt one or more explosion control
measures, such as explosion venting, explosion suppression, inerting and explosion isolation,
etc. Explosion isolation measures shall not be used alone.
7.2.2 When explosion venting measures are used, explosion vents shall be installed at the
elevator head and base (or lower portion of the machine body). The effective pressure relief
area at the elevator head shall be no less than 0.05 m2/m3 of the elevator head volume. The
explosion vents shall not be located in basements.
7.2.3 When explosion vents are installed in vertical sections of the machine enclosure, they
shall be set in accordance with the height of the machine body and comply with the provisions
of GB/T 15605.
7.2.4 Bucket elevators shall be equipped with anti-slip and anti-skid safety protection devices.
In the event of a malfunction, they shall be able to provide an immediate alarm and interlock
shutdown.
7.2.5 An inspection opening shall be provided at the elevator head, and a feed removal opening
shall be provided at the elevator base.
7.2.6 The cylinder enclosure, elevator head and elevator base shall be reliably grounded.
7.2.7 Bearings of rotating parts shall be located externally of the elevator body.
7.2.8 Continuous bearing temperature monitoring devices shall be provided at the head and tail
of the bearings.
7.2.9 The bucket and bucket belt shall be firmly connected.
7.2.10 The bucket shall be made of non-metallic flame-retardant materials.
7.2.11 The rubber coating on the drive wheel and the bucket belt shall use flame-retardant and
anti-static materials.
7.3 Chutes
7.3.1 Connections of the chutes, pipe fittings and buffer buckets shall be fabricated, and all
joints shall be sealed.
7.3.2 The chutes for conveying feeds shall be equipped with buffer devices at bends and when
the vertical drop exceeds 6 m.
7.4 Screw Conveyors and Scraper Conveyors
7.4.1 The spiral shall not scrape, collide or jam. If the discharge port becomes blocked, the
conveyor shall automatically shut down and issue an alarm.
7.4.2 The scraper chain of the scraper conveyors shall correctly engage when entering the head
pulley, and shall not jam or jump.
7.4.3 The scraper conveyors shall be equipped with chain break or tail pulley stall protection
devices.
7.4.4 The scraper conveyors shall be equipped with anti-blocking monitoring devices that shall
be able to immediately issue an alarm and interlock shutdown in the event of a malfunction.
7.4.5 If the scraper conveyors use wear-resistant, anti-static ultra-high molecular weight plastic
guide plates, the guide plate interfaces shall be aligned and shall not scrape, collide or jam.
7.5 Bin Dischargers
7.5.1 The connection between the feed inlet of the bin dischargers and the silo shall be properly
sealed. The connecting flanges shall be lined with non-metallic sealing gaskets and securely
bolted. The plugboard gate shall be conveniently opened. The discharge port connection of the
bin dischargers and hose connections shall be sealed.
7.5.2 A start-up interlocking protection system shall be provided to ensure that the bin
dischargers (bin clearers) cannot operate unless the downstream conveying equipment is
activated and the center blanking gate is opened.
7.5.3 When electrical equipment is installed in the bin dischargers (bin clearers), it shall satisfy
the requirements of the explosion hazardous area in which it is located.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB 19081-2025 be delivered?Answer: The full copy PDF of English version of GB 19081-2025 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB 19081-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB 19081-2025_English will be deemed to be sold to your employer/organization who actually paid 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+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 19081-2025 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB 19081-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 19081-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB 19081-2025?A step-by-step guide to download PDF of GB 19081-2025_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB 19081-2025".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|