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  • ASTM
    D4174-23 Standard Practice for Cleaning, Flushing, and Purification of Petroleum Fluid Hydraulic Systems
    Edition: 2023
    $86.11
    Unlimited Users per year

Description of ASTM-D4174 2023

ASTM D4174-23

Active Standard: Standard Practice for Cleaning, Flushing, and Purification of Petroleum Fluid Hydraulic Systems




ASTM D4174

Scope

1.1 This practice covers aid for the equipment manufacturer, the installer, the oil supplier and the operator in coordinating their efforts towards obtaining and maintaining clean petroleum fluid hydraulic systems. Of necessity, this practice is generalized due to variations in the type of equipment, builder's practices, and operating conditions. Constant vigilance is required throughout all phases of design, fabrication, installation, flushing, testing, and operation of hydraulic systems to minimize and reduce the presence of contaminants and to obtain optimum system reliability.

1.2 This practice is presented in the following sequence:

 

Section

Scope

1

Referenced Documents

2

Terminology

3

Significance and Use

4

Types of Contamination

5

General

5.1

Water

5.2

Soluble Contaminants

5.3

Insoluble Contaminants

5.4

Lodged Contamination

5.4.2.1

Suspended or Loose Contamination

5.4.2.2

Contamination Control

6

General

6.1

Initial Filling

6.1.1

In-Service Units

6.1.2

Connection of Contamination Control System

6.1.3

Piping or Tubing Contamination Control System

6.1.4

Contamination Control Procedures

6.2

Full Flow Contamination Control

6.2.1

Bypass Contamination Control

6.2.2

Batch Contamination Control

6.2.3

Contamination Control Processes

6.3

Gravity

6.3.1

Mechanical

6.3.2

Centrifuge

6.3.2.1

Filters

6.3.2.2

Supplementary Methods

6.3.3

Limitations of Contamination Control Devices

6.3.4

Storage

7

General

7.1

Inspection

8

General

8.1

System Components

8.2

Valves, Strainers, and Coolers

8.2.1

Sumps and Tanks

8.2.2

Control Devices

8.2.3

Pumps

8.2.4

Flushing Program

9

General

9.1

Preparation of System for Flushing

9.2

Fluid Heating Prior to Flushing

9.3

Selection of Flushing Oils

9.4

System Operation Fluid

9.4.1

Special Flushing Oil

9.4.2

Flushing Oil Selection Guide

9.4.3

Flushing Procedure for New Systems

9.5

Flushing Oil Charge

9.5.1

Cleaning of Filtration Devices

9.5.2

Cleaning of System Components

9.5.3

System Flushing and Flush Acceptance Criteria

9.5.4

Draining of Flushing Oil

9.5.5

Displacement Oil

9.5.6

Interim Corrosion Protection

9.5.7

New Fluid Charge

9.5.8

Flushing of Used Systems

9.6

General Guidelines

9.6.1

Procedure

9.6.2

System Maintenance

10

Preinstallation

10.2

In-Service Units

10.3

Decision to Flush In-Service Hydraulic Systems

10.4

Fluid Condition Monitoring

11

Fluid Sampling Techniques

11.2

Visual Inspection

11.3

Laboratory Analysis

11.4

Fluid Cleanliness Criteria

11.5

General Information

12

Centrifuge Ratings

12.2

Coalescence

12.3

Vacuum Dehydration

12.4

Adsorption

12.5

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


Keywords

contamination; filter/filtration; flushing;


ICS Code

ICS Number Code 23.100.01 (Fluid power systems in general)


DOI: 10.1520/D4174-23

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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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