GB/T 3766-2015Hydraulic fluid power -- General rules and safety requirements for systems and their components (English PDF)

Foreword

This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces GB/T 3766-2001 "Hydraulic Fluid Power - General

Rules Relating to Systems". As compared with GB/T 3766-2001, the main

technical changes are as follows.

- ADD reference standards GB/T 2878.1, GB/T 2878.2, GB/T 14048.14,

GB/T 15706, GB 16754, GB/T 19671, GB/T 25133, ISO 1219-2, ISO 6149-

3, ISO 16874, ISO 17165-1 (SEE Clause 2);

- DELETE reference standards GB/T 2514, GB/T 2877, GB 4208, GB/T

5226.1, GB/T 8098, GB/T 8010, GB/T 8101, JB/T 5244, JB/T 5963, ISO

4400, ISO 6149-1, ISO 6952, ISO 7790, ISO 8434-1, ISO 8434-2, ISO

8434-3, ISO 8434-4, ISO/TR 11688-1, ISO 12151-1, ISO 12151-2, ISO

12151-3, ISO 12151-4, ISO 12151-5 (SEE Clause 2 of the 2001 version);

- ADD the content which shall be considered for valve selection and the

requirements for "isolation valve" (SEE 5.4.4.1);

- ADJUST some of the requirements for valve mounting (SEE 5.4.4.2);

- ADD requirements for identification of "manifold" (SEE 5.4.4.3.5);

- ADD the requirements for "level of contamination of hydraulic fluid" (SEE

5.4.5.1.3);

- ADD the requirement of providing a "pan" for reservoir design (SEE

5.4.5.2.1);

- ADD the requirement for the "structural integrity" of reservoirs (SEE

5.4.5.2.2.6);

- ADD the "corrosion protection" requirement for reservoirs (SEE 5.4.5.2.2.7);

- ADD "grounding" requirements for reservoirs (SEE 5.4.5.2.2.8);

- ADD the requirement of "electromagnetic interference protection" for

controls (SEE 5.4.7.6.1);

- ADD the "contamination control" requirement for "diagnostics and

monitoring" (SEE 5.4.8.5);

- ADD the connection identification requirement for conductors (SEE 7.4.3.2).

This Standard uses redraft law to modify and adopt ISO 4413.2010 "Hydraulic

fluid power - General rules and safety requirements for systems and their

components" (English version).

The technical differences between this Standard and ISO 4413.2010 and their

reasons are as follows.

- About normative references, this Standard has made adjustments with

technical differences, to adapt to the technical conditions of China. The

adjustments are reflected in Clause 2 "Normative references", as follows.

lambda REPLACE ISO 1219-1 with GB/T 786.1 identical to the international

standard (SEE 7.4.1.1);

lambda REPLACE ISO 6149-1 with GB/T 2878.1 identical to the international

standard (SEE 5.3.2.5.2);

lambda REPLACE ISO 6149-2 with GB/T 2878.2 which uses the international

standard by modification (SEE 5.3.2.5.2);

lambda REPLACE ISO 4406 with GB/T 14039 which uses the international

standard by modification (SEE 5.4.5.1.3, 7.3.1.1);

lambda REPLACE IEC 60947-5-5 with GB/T 14048.14 identical to the

international standard (SEE 5.4.7.7.2);

lambda REPLACE ISO 12100 with GB/T 15706 identical to the international

standard (SEE Clause 1, Clause 3, 5.1.1, 7.1, Table A.1);

lambda REPLACE ISO 13850 with GB/T 16754 identical to the international

standard (SEE 5.4.7.7.2);

lambda REPLACE ISO 5598 with GB/T 17446 identical to the international

standard (SEE Clause 3);

lambda REPLACE ISO 4021 with GB/T 17489 identical to the international

standard (SEE 5.4.8.3);

lambda REPLACE ISO 13851 with GB/T 19671 which uses the international

standard by modification (SEE 5.4.7.3.6);

lambda REPLACE ISO 23309 with GB/T 25133 identical to the international

standard (SEE 5.4.7.4.4);

- 5.4.1.7, ADD e), to cover more products for application;

- 5.4.2.1, DELETE ISO/TS 13725.This document has been abolished;

- b) of 5.4.5.1.2, CHANGE "fire-resistant hydraulic fluid" to "hydraulic fluid";

- g) of 5.4.5.2.1, ADD a narrative, to make the requirements more

comprehensive;

- g) of 5.4.5.2.2.4, ADD a narrative, to reflect the actual application

requirements;

- O) of 7.3.1.1, ADD "SEE 5.4.3".

This Standard also makes the following editorial changes.

- 5.2.7f), after "energy isolation", ADD "(e.g., disconnection of power,

hydraulic sources)", for easy understanding;

- REORGANIZE the sub-clauses of 5.3.2, to make them consistent with the

heading narrative order; SIMPLIFY the "Notes" of 5.3.2.3.2;

- MODIFY the "Notes" of 5.4.2.12;

- DELETE the statement "expressed in accordance with ISO 4406" in

5.4.5.3.1;

- ADD 5.4.6.5.3.3, to incorporate and supplement the same statements in

1 Scope

This Standard specifies general rules and safety requirements for hydraulic

systems and their components used on machinery as defined by 3.1 in GB/T

15706-2012.This Standard deals with all significant hazards associated with

hydraulic systems and specifies the principles to avoid those hazards when the

systems are put to their intended use.

2 Normative references

The following documents are indispensable for the application of this document.

For the dated references, only the versions with the dates indicated are

applicable to this document. For the undated references, the latest version

(including all the amendments) are applicable to this document.

3 Terms and definitions

The terms and definitions given in GB/T 17446 and GB/T 15706-2012 and the

following apply to this document.

4 List of significant hazards

Table A.1 lists the significant hazards associated with the use of hydraulic fluid

power in a machine.

5 General rules and safety requirements

If leakage (internal or external) occurs, it shall not cause a hazard.

All components, assemblies or piping having a mass greater than 15 kg shall

have provision(s) for lifting by means of lifting devices.

6 Verification of safety requirements and acceptance testing

The hydraulic system shall be subjected to a combination of inspection and

testing to verify that

7 Information for use

For service or replacement of components in safety-related parts of control

systems, information shall be provided relating to service life and mission time.

If the wrong direction of rotation can cause a hazard, the correct direction of

rotation of the pump and motor shall be clearly and distinctly identified.

8 Identification statement

It is recommended to manufacturers who have chosen to conform to this

Standard that the following statement be used in test reports, catalogues and

sales literature. "Hydraulic systems and their components are in accordance

with GB/T 3766-2015, Hydraulic fluid power - General rules and safety

requirements for systems and their components".

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