Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

The following BSI references relate to the work on this standard: Committee reference GSE/33

Drafts for comment 06/30148066 DC, 12/30273388 DC

Publication history

First published June 2007

Foreword

Publishing information

This British Standard is published by BSI Standards Limited, under licence from The British Standards Institution.

This British Standard came into effect on 29 June 2007 and was prepared by Technical Committee GW/33, Gas supply. A list of organizations represented on the committee can be obtained on request to its secretary.

Supersession

BS 8487:2007+A1:2013 supersedes BS 8487:2007, which is withdrawn.

Information about this document

Text introduced or altered by Amendment No. 1 is indicated in the text by tags . Minor editorial changes are not tagged.

Use of this document

The provisions of this standard are presented in roman (i.e. upright) type. Its requirements are expressed in sentences in which the principal auxiliary verb is “shall”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

In particular, attention is drawn to the following statutory regulations:

Introduction

This British Standard has been produced to address the growing use of centrifugal boosters on gas-fired plant. The boosters normally supply gas at pressures up to about 150 mbar, but almost identical units may also be used for combustion air duties.

The standard has been produced to enhance the advice provided by manufacturers with respect to the need for maintenance on gas boosters by competent persons. The sections on maintenance and commissioning within this standard will be of relevance to existing units.

1 Scope

This British Standard specifies the construction and maintenance requirements of indirectly and directly driven single-stage centrifugal booster assemblies (hereafter referred to as machines), working on first, second or third family gas, having an outlet pressure of not greater than 150 mbar.

This standard is not applicable to positive displacement gas and slide vane type compressors.

This standard is also applicable to machines with outlet pressures not greater than 150 mbar used on landfill gases or biogases or gas/air mixtures, provided that any additional design and safety issues have been incorporated.

Though applicable to single-stage machines only, this standard can be used as a basis for multi-stage machines where, in general, pressures higher than 150 mbar are achieved.

NOTE All pressures are gauge pressures. All pressure tests are performed with air under ambient conditions.

2 Normative references

3 Materials and components

3.1 General

3.2 Design life

3.3 Mechanical strength

3.4 Gas soundness

4 Impeller and drive train

5 Shaft seals

6 Bearings

7 Temperature limitations

8 Guarding

9 Controls

10 Electrical circuit

11 Motor drive

12 Pipe connections and tappings

12.1 General

12.2 Torsion and bending

13 Marking and data plates

14 Installation instructions

15 Commissioning instructions

16 Servicing and maintenance

Bibliography

BS 8487:2007+A1:2013

The design and construction of gas boosters used in association with combustion equipment. Specification

Current

Published:

29 Jun 2007