GB/T 37170-2018 English PDF (GBT37170-2018)

This Standard specifies the safety requirements and protective measures for stationary gas engines and their auxiliary equipment. This Standard applies to stationary gas engines with power greater than or equal to 500 kW.

GB/T 37170-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.020
J 91
Technical code for safety of stationary gas engine
ISSUED ON. DECEMBER 28, 2018
IMPLEMENTED ON. JULY 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 A list of hazards ... 7
5 Safety requirements and/or measures ... 7
5.1 Starting system ... 7
5.2 Shutdown system ... 8
5.3 Control device ... 9
5.4 Monitoring instrument ... 10
5.5 Alarm device ... 10
5.6 Protective design ... 10
5.7 Protective measures ... 10
5.8 Lighting ... 11
5.9 Fire protection ... 11
5.10 Explosion proof ... 12
5.11 Static proof ... 12
5.12 Ignition system ... 13
5.13 Pressurization system ... 13
5.14 Hose and piping ... 13
5.15 Electrical equipment and electrical wiring ... 14
5.16 Cooling system... 14
5.17 Handling ... 14
6 Use and maintenance ... 15
6.1 General ... 15
6.2 Workplace ... 15
6.3 Use and maintenance instructions ... 15
6.4 Signs, symbols, text warnings ... 15
Annex A (Normative) A list of dangers ... 16
Technical code for safety of stationary gas engine
1 Scope
This Standard specifies the safety requirements and protective measures for stationary gas engines and their auxiliary equipment.
This Standard applies to stationary gas engines with power greater than or equal to 500 kW (hereinafter referred to as “the engine”).
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/T 1883.1 Reciprocating internal combustion engines - Vocabulary - Part 1. Terms for engine design and operation
GB/T 1883.2 Reciprocating internal combustion engines - Vocabulary - Part 2. Terms for engine maintenance
GB 3836.1-2010 Explosive atmospheres - Part 1. Equipment - General
requirements
GB/T 4025 Basic and safety principles for man-machine interface, marking and identification - Coding principles for indicators and actuators
GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility
GB/T 4556 Reciprocating internal combustion engines - Fire protection
GB/T 9239.1 Mechanical vibration - Balance quality requirements for rotors in a constant (rigid) state - Part 1. Specification and verification of balance tolerances
GB/T 10715 Belt drives - V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal belts - Electrical conductivity of antistatic belts. Characteristics and methods of test
GB/T 15706 Safety of machinery - General principles for design - Risk
assessment and risk reduction
GB/T 16754 Safety of machinery - Emergency stop - Principles for design GB/T 17300 Earth-moving machinery - Access systems
GB/T 17804 Reciprocating internal combustion engines - Graphical symbols GB/T 18209.1 Electrical safety of machinery - Indication, marking and
actuation - Part 1. Requirements for visual, acoustic and tactile signals GB/T 18209.2 Electrical safety of machinery - Indication, marking and
actuation - Part 2. Requirements for marking
GB/T 18717.2 Ergonomic design for the safety of machinery - Part 2.
Principles for determining the dimensions required for openings for access of parts of the body into machinery
GB/T 20651.1-2018 Reciprocating internal combustion engines - Safety -
Part 1. Compression ignition engines
GB 20800.1-2006 General rules of explosion-protect techniques of
reciprocating internal combustion engines for explosive atmospheres - Part 1. Group II engines for use in flammable gas and vapor atmospheres
GB 20800.2 General rules of explosion-protect techniques of reciprocating internal combustion engines for explosive atmospheres - Part 2. Group II engines for use in flammable dust atmospheres
GB 20800.3 General rules of explosion-protect techniques of reciprocating internal combustion engines for explosive atmospheres - Part 3. Group I engines for use in underground workings susceptible to firedamp and/or
combustible dust
GB/T 23821 Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs
GB 50058-2014 Code for design of electrical installations in explosive
atmospheres
AQ 3009-2007 Safety criterion for electrical apparatus in hazardous areas EN 983 Safety of machinery - Safety requirements for fluid power systems and their components - Pneumatics
3 Terms and definitions
For the purpose of this document, the terms and definitions defined in GB/T 1883.1, GB/T 1883.2 and GB/T 4365 and the following apply.
5.4 Monitoring instrument
5.4.1 The monitoring instrument shall be marked by a symbol or by text in accordance with the provisions of GB/T 17804.
5.4.2 The monitoring instrument shall be easily visible to the operator. Lighting equipment shall be provided when it requires to work at night or indoors. 5.4.3 The monitoring instrument shall indicate with colors in accordance with the provisions of GB/T 4025. It is recommended to indicate the failure or dangerous state in red and the normal working condition in green.
5.5 Alarm device
5.5.1 The alarm device, signal, sign and color shall comply with the provisions of GB/T 18209.1. If there is an emergency alarm system, a red alarm light and/or audible alarm device capable of displaying its operation shall be provided.
5.5.2 The alarm device shall be provided with an inspection position to indicate whether its function is normal, and it shall be capable of being inspected when the engine is running or stopped.
5.6 Protective design
5.6.1 The moving parts of the engine shall have good balance performance. The unevenness of the crankshaft and flywheel components shall be in
accordance with the provisions of technical documentation or GB/T 9239.1. 5.6.2 There shall be sufficient space between the guard and the protected part to avoid friction.
5.6.3 The installation of the guard shall be firm and reliable, and shall be strong enough for guards that may be subjected to trampling or falling.
5.6.4 The guards used to contain the projectile parts shall be capable of preventing the passage of the corresponding size of the flying block.
5.7 Protective measures
5.7.1 Mechanical hazard protection
5.7.1.1 The operator shall be protected within the safety distance specified in GB/T 23821. The size of the safety distance depends on the installation of the engine.
5.7.1.2 When the engine is running, the exposed rotating parts and the
transmission mechanism that may cause danger to the operator shall be
square meter of floor space or ventilates at least 6 times within 1 h, it is considered to be a good ventilation place. This ventilation rate can be achieved by natural or mechanical ventilation.
5.9.2 The engine exhaust pipe shall be fitted with a spark arrester or other device with the function of a spark arrester. The corrosion resistance and wear resistance of the structural materials of the spark arrester shall be equivalent to or better than that of the 07Cr19Ni11Ti stainless steel.
5.10 Explosion proof
5.10.1 For engines where gaseous fuel enters the cylinder through the intake manifold, an explosion-proof safety valve or other explosion-proof measures shall be installed on the intake manifold unless there is evidence that the system is strong enough to withstand the worst-case explosion.
5.10.2 When the engine is used in a potentially explosive atmosphere, it shall comply with the provisions of GB 20800.1-2006, GB 20800.2 and GB 20800.3. 5.10.3 Safety valves shall be installed on the crankcase. The number and installation position shall comply with the relevant regulations.
5.10.4 If the crankshaft ventilation duct is connected to a hazardous area or has special requirements, its ventilation ducts shall have a fire-proof effect or be fitted with a flame arrester.
5.10.5 Explosion-proof lighting shall be used for crankcases with internal lighting and it shall not be routed within the crankcase.
5.11 Static proof
5.11.1 Plastic materials
To prevent electrostatic discharge ignition of plastic materials, it shall be carried out in accordance with the requirements of 4.13.1 of GB 20800.1-2006.
5.11.2 Potential balance
All externally accessible components shall be connected to the engine cylinder block by conductors to achieve potential balance. If these components are securely attached and in contact with the cylinder block or metal, a separate conductor connection is not required.
5.11.3 Flange electrostatic jumper
The gas pipeline of the engine and its accessories shall be electrostatically grounded. For gas pipelines with a nominal diameter greater than or equal to 5.14.4 The hose must not interfere with the accessibility of the service point. 5.14.5 Hose or piping assemblies that may leak flammable liquids or gases to hot surfaces shall be protected, to prevent fluid from contacting the hot surface or to ensure that it can withstand 2 times the working pressure when designing the section size.
5.15 Electrical equipment and electrical wiring
5.15.1 According to the application environment of the engine, the electrical equipment shall meet the requirements of Class I, Class II and Class III electrical equipment specified in GB 3836.1-2010 respectively.
5.15.2 The selection and installation of electrical equipment and electrical wiring shall comply with the requirements of Clauses 5 and 6 of AQ 3009-2007. 5.15.3 The voltage of the electrical equipment of the engine shall not exceed 24 V.
5.16 Cooling system
The warning sign shall be set in the eye-catching position of the engine. The operator must not open the radiator watering cover under the hot state of the engine to avoid being burnt by high temperature steam.
5.17 Handling
5.17.1 The engine shall be designed to ensure reliable stability during normal transportation, installation and use, without being tilted by vibration or other foreseeable external forces.
5.17.2 The engine shall be provided with connecting piece(s) for lifting, to lift the complete machine or other components as directed by the manufacturer. 5.17.3 The connecting piece shall be capable of withstanding at least 1.5 times the lifting mass divided equally by the number of lifting connecting pieces. 5.17.4 When the lifting support bar (beam) is not used, the lifting connecting piece shall be so as to ensure that the sling or chain is placed over the center of gravity of the engine when the engine is lifted.
5.17.5 When lifting the engine, it shall avoid the sling or chain contact with the engine to avoid permanent deformation of the engine components.