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This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 7932-2003 Pneumatic Fluid Power — General Rules Relating to Systems.
In addition to a number of editorial changes, the following technical deviations have been made with respect to the GB/T 7932-2003 (the previous edition):
— The title is changed to Pneumatic Fluid Power — General Rules and Safety Requirements for Systems and Their Components;
— The contents of "Scope" are modified (see Clause 1; Clause 1 of Edition 2003);
— The contents of "Normative References" are modified (see Clause 2; Clause 2 of Edition 2003);
— Partial contents of "Terms and Definitions" are deleted (3.1, 3.3, 3.4, 3.8, 3.9, 3.10 and 3.13 of Edition 2003);
— The contents of "General Rules and Safety Requirements" are modified (see Clause 5; Clauses 4 to 11 of Edition 2003);
— Addition of "Verification of Safety Requirements and Acceptance Testing" (see Clause 6);
— The contents of "Information for Use" are modified (see Clause 7; 14.4 of Edition 2003);
— "Items Requiring Supplier/Purchaser Agreement" and "Example of Parts List" are deleted (Annexes A and C of Edition 2003);
— "List of Significant Hazards" and "Pneumatic System and Component Data" are modified (see Annexes A and B; Annexes B and D of Edition 2003);
— Additon of "Bibliography" (see Bibliography).
This standard is identical with International Standard ISO 4414:2010 Pneumatic Fluid Power — General Rules and Safety Requirements for Systems and Their Components.
The Chinese documents having corresponding consistency relationship with the normative international instruments referenced in this standard are given below:
— GB/T 786.1-2009 Fluid Power Systems and Components - Graphic Symbols and Circuit Diagrams — Part 1: Graphic Symbols for Conventional Use and Data-processing Applications (ISO 1219-1:2006, IDT);
— GB 4208-2008 Degrees of Protection Provided by Enclosure (IP Code) (IEC 60529:2001, IDT);
— GB 16754-2008 Safety of Machinery - Emergency Stop — Principles for Design (ISO 13850:2006, IDT);
— GB/T 17446-2012 Fluid Power Systems and Components — Vocabulary (ISO 5598:2008, IDT);
— GB/T 19670-2005 Safety of Machinery — Prevention of Unexpected Start-up (ISO 14118:2000, MOD);
— GB/T 19671-2005 Safety of Machinery —- Two-Hand Control Devices — Functional Aspects and Design Principles (ISO 13851:2002.IDT);
— GB/T 32215-2015 Pneumatic Fluid Power — Identification of Ports and Control Mechanisms of Control Valves and Other Components (ISO 11727:1999, IDT).
This standard was proposed by the China Machinery Industry Federation.
This standard was prepared by SAC/TC 3 (National Technical Committee 3 on Hydropneumatic of Standardization Administration of China).
The previous editions of this standard are as follows:
— GB/T 7932-1987, GB/T 7932-2003.
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Introduction
In pneumatic fluid power systems, power is transmitted and controlled through air or a neutral gas under pressure within a circuit. When the characteristics of compressed gases are represented by their pneumatic elements, equipment or systems, the application of pneumatic fluid power systems requires a thorough understanding and precise communication between the supplier and purchaser.
Pneumatic Fluid Power — General Rules and Safety Requirements for Systems and Their Components
1 Scope
This standard specifies general rules and safety requirements for pneumatic fluid power systems and components. It deals with all significant hazards associated with pneumatic fluid power systems and specifies principles to apply in order to avoid those hazards when the systems are put to their intended use.
Note 1: See Clause 4 and Annex A.
The significant hazard noise is incompletely dealt with in this standard.
Note 2: Noise emission depends especially on the installation of pneumatic components or systems into machinery.
This standard applies to the design, construction and modification of systems and their components, also taking into account the following aspects:
a) assembly;
b) installation;
c) adjustment;
d) uninterrupted system operation;
e) ease and economy of maintenance and cleaning;
f) reliable operation in all intended uses;
g) energy efficiency; and
h) environment.
This standard does not apply to air compressors and the systems associated with air distribution as typically installed in a factory, including gas bottles and receivers.
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 15706-2012 Safety of Machinery — General Principles for Design — Risk Assessment and Risk Reduction (ISO 12100:2010, IDT)
ISO 1219-1 Fluid Power Systems and Components — Graphic Symbols and Circuit Diagrams — Part 1: Graphic Symbols for Conventional Use and Data-processing Applications
ISO 1219-2 Fluid Power Systems and Components — Graphic Symbols and Circuit Diagrams — Part 2: Circuit Diagrams
ISO 5598 Fluid power Systems and Components — Vocabulary
ISO 11727 Pneumatic Fluid Power — Identification of Ports and Control Mechanisms of Control Valves and Other Components
ISO 13850 Safety of Machinery — Emergency Stop — Principles for Design
ISO 13851 Safety of Machinery — Two-hand Control Devices — Functional Aspects and Design Principles
ISO 14118 Safety of Machinery — Prevention of Unexpected Start-up
IEC 60529 Degrees of Protection Provided by Enclosures(IP Code)
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in ISO 5598 and GB/T 15706 and the following apply.
3.1
commissioning
procedure by which a system is formally accepted by the purchaser
3.2
emergency control
control function that brings a system to a safe condition
3.3
function plate
surface that contains information describing either the performance of a manually operated device (e.g. ON/OFF, forward/reverse, left/right, up/down) or the status of a function performed by the system (e.g. clamp, lift, advance)
3.4
neutral gas
non-combustible gas that has properties similar to air and does not react to the effects of pressure and/or temperature in a manner different from air
3.5
purchaser
party that stipulates the requirements of a machine, equipment, system or component and judges whether the product satisfies those requirements
3.6
supplier
party that contracts to provide the products to satisfy the purchaser's requirements
4 List of Significant Hazards
Table A.1 lists significant hazards associated with the use of pneumatic fluid power in a machine.
5 General Rules and Safety Requirements
5.1 General
5.1.1 When designing pneumatic systems for machinery, all intended operations and use of systems shall be considered. Risk assessment, e.g. in accordance with ISO 14121-1, shall be carried out to determine the foreseeable risks associated with systems when they are used as intended. Reasonably foreseeable misuse shall not cause hazards. The risks identified shall be eliminated by design and, where this is not practicable, safeguards (first preference) or warnings (second preference) against such risks shall be incorporated, in accordance with the hierarchy established in GB/T 15706.
Note: This International Standard provides requirements for components of fluid power systems; some of these requirements are dependent on the hazards associated with the machine in which the system is installed. Therefore, the final specification and construction of the pneumatic system could need to be based on risk assessment and agreement between purchaser and supplier.
5.1.2 The control systems shall be designed in accordance with the risk assessment. This requirement is met when ISO 13849-1 is used.
5.1.3 The prevention of damage to the machine, systems and the environment shall be considered.
5.1.4 Deviations from this International Standard shall be agreed to in writing between the purchaser and supplier. Attention should be drawn by the purchaser and/or the supplier to applicable national and local codes or laws.
Foreword II
Introduction IV
1 Scope
2 Normative References
3 Terms and Definitions
4 List of Significant Hazards
5 General Rules and Safety Requirements
6 Verification of Safety Requirements and Acceptance Testing
7 Information for Use
8 Identification Statement
Annex A (Informative) List of Significant Hazards
Annex B (Informative) Form for Collecting Pneumatic System and Component Data to Ensure Conformance with GB/T
Bibliography
