BS 7388:1991
Current
The latest, up-to-date edition.
Guide for prevention of leaks from hydraulic fluid power systems
Hardcopy , PDF
English
02-28-1991
Committees responsible
Foreword
Guide
0 Introduction
1 Scope
2 Specifications
2.1 General
2.2 Definition of leakage
2.3 Operating specification
2.4 Conditions applying to maintenance
2.5 Design specification
3 Design considerations
3.1 General
3.2 Number of pipe joints
3.3 Valve mounting methods
3.4 Pipe systems
4 Component choice
4.1 General
4.2 Tubing
4.3 Tube fittings
4.4 Welded fittings
4.5 Hoses and hose fittings
4.6 Adaptors
4.7 Coupling port threads and their sealing methods
4.8 Self-sealing couplings
4.9 Reservoirs
4.10 Cylinders
4.11 Pumps and motors
4.12 Valves
5 Design for maintenance
5.1 General
5.2 Accessibility
5.3 Removal of components for service
5.4 Isolating sections
5.5 Filters
5.6 Drip trays and drain tanks
5.7 System filling
5.8 System draining
5.9 System cleaning (flushing)
5.10 External cleaning after spillage or as routine
5.11 Remaking pipe joints
5.12 Self-sealing couplings
6 Pipework design
6.1 General
6.2 Installation and cleaning
6.3 Vibration
6.4 Pipe stresses
6.5 Location of pipe couplings
6.6 Hoses
7 Seals
7.1 Static seals
7.2 Dynamic seals
8 Installation
8.1 General
8.2 Off-site work (preliminary build and test)
8.3 On-site installation
8.4 Production line installation (where the system is
part of product)
9 Commissioning and testing
9.1 General
9.2 Commissioning
10 Maintenance
10.1 General
10.2 System evaluation
10.3 Preventive maintenance
10.4 Maintenance routines
11 Fluid spillage
11.1 General
11.2 Prevention of spillage
11.3 Precautions should spillage occur
12 Responsibilities
12.1 Designers' responsibilities
12.2 Customers' responsibilities
12.3 Suppliers' responsibilities
Appendices
A Leakage categories
B Cleaning methods and materials
Table
1 Guide to leakage categories
Figures
1 Example of a 24 degree bite type compression
coupling
2 Example of a 37 degree flare type compression
coupling
3 Example of an 'O'-ring type compression coupling
4 Example of welding steel pipe to welding nipple
5 Four-bolt split flange
6 Four-bolt square flange
7 Four-bolt square welded flange
8 Example of a re-usable hose fitting
9 Example of a swaged hose fitting
10 G thread (BSP) 60 degree cone fitting (with and
without 'O'-ring sealing)
11 JIC 74 degree cone fitting
12 Flat face 'O'-ring seal fitting
13 Staple fitting
14 Examples of coupling port thread sealing methods
15 Examples of good and bad pipe runs
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.