Standard No.:	GA 1149-2014
English Name:	Water mist extinguishing equipment
Chinese Name:	细水雾灭火装置
Chinese Classification:	C84    Fire-fighting equipment and devices
Professional Classification:	GA    Professional Standard - Security
ICS Classification:	13.220.10 13.220.10    Fire-fighting 13.220.10
Source Content Issued by:	Ministry of Public Security
Issued on:	2014-05-21
Implemented on:	2014-5-21
Status:	superseded
Superseded by:	XF 1149-2014 Water mist extinguishing equipment
Superseded on:	2014-5-21
Superseding:	公告：应急管理部公告 2020年第5号
Target Language:	English
File Format:	PDF
Word Count:	30000 words
Translation Price(USD):	750.0
Delivery:	via email in 1 business day

1 Scope This standard specifies terms and definitions, classification and basic parameters, requirements, test methods, inspection rules and marking and instruction for use of the water mist extinguishing equipment. This standard is applicable to water mist extinguishing equipment. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 150.1 Pressure Vessels — Part 1: General Requirements GB 150.2 Pressure Vessels — Part 2: Materials GB 150.3 Pressure Vessels — Part 3: Design GB 150.4 Pressure Vessels — Part 4: Fabrication, Inspection and Testing, and Acceptance GB/T 1226 General Pressure Gauge GB/T 1227 Accurate Pressure Gauge GB 5099 Seamless Steel Gas Cylinders GB 5135.1-2003 Automatic Sprinkler System — Part 1: Sprinkler GB 5135.9-2006 Automatic Sprinkler System — Part 9: Early Suppression Fast Response (ESFR) Automatic Sprinklers GB/T 8979 Pure Nitrogen and High Purity Nitrogen and Ultra Pure Nitrogen GB/T 9969 General Principles for Preparation of Instructions for Use of Industrial Products GB/T 16172 Test Method for Heat Release Rate of Building Materials GB 25972-2010 Gas Fire Extinguishing Systems and Components GA 61-2010 General Technical Specifications of Actuating and Control Devices of Fixed Extinguishing Systems JB/T 9243 Glass Pipe Level Gauges JB/T 9273 Pressure Gauge with Electric Contact SY/T 0063-1999 Standard Test Methods for Holiday Detection in Pipeline Coatings TSG R0004-2009 Supervision Regulation on Safety Technology for Stationary Pressure Vessel 3 Terms and Definitions For the purposes of this standard, the following terms and definitions apply. 3.1 water mist under the minimum design operating pressure, a drop of water mist having a drop diameter Dv0.50 less than 200 μm and a drop diameter Dv0.99 less than 400 μm which is sprayed through the head and formed at a plane 1 m below the nozzle axis. 3.2 drop diameter Dv0.99 diameter under which the drop accounts for 99% of the total volume of spray mist. 3.3 drop diameter Dv0.50 diameter under which the drop accounts for 50% of the total volume of spray mist. 3.4 water mist nozzle nozzle that produces and releases water mist for fire extinguishing within the design operating pressure. 3.5 water mist extinguishing equipment automatic extinguishing equipment consisting of water supply equipment, filtering equipment, section valve, water mist nozzle and other components as well as water supply pipe, which can automatically and manually start and spray water mist to extinguish or control fire. 3.6 self-contained water mist extinguishing equipment water mist extinguishing equipment that uses a self-contained stored and pressurized gas for pressurized water supply.

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification and Types 5 Basic Parameters 6 Requirement 7 Test Methods 8 Inspection Rules 9 Marking and Specification Annex A (Normative) Test Procedures and Sample Size of Equipment Annex B (Normative) Test Procedures and Sample Size of Gas Cylinder Set Annex C (Normative) Test Procedures and Sample Size of Water Cylinder Set Annex D (Normative) Test Procedure and Sample Size of Safety Relief Equipment Annex E (Normative) Test Procedures and Sample Size of Pressure Reducing Equipment Annex F (Normative) Test Procedures and Sample Size of Section Valve Annex G (Normative) Test Procedures and Sample Size of Pump Unit Annex H (Normative) Test Procedures and Sample Size of Control Panel (Cabinet) Annex I (Normative) Test Procedures and Sample Size of Container Valve (Release Valve), Gas Check Valve, Drive Unit, and Connecting Tube Annex J (Normative) Test Procedures and Sample Size of Water Mist Nozzle Annex K (Normative) Tolerance