BS EN 764-7:2002 Pressure equipment. Safety systems for unfired pressure vessels

BS EN 764-7 is a European Standard which specifies the requirements for safety systems which protect a vessel, a system of vessels, piping, accessories or assemblies from exceeding operating conditions.

It is also applicable to safety related indicators and alarms, signals and warning devices when used in safety systems.

The scope of BS EN 764-7 and its relationship to the safety accessories and other protective devices described in the Pressure Equipment Directive are shown in annex E.

Contents of BS EN 764-7:

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Risk consideration

4.1 General

4.2 Identification of hazards

4.3 Solutions

5 Limiting devices and systems

5.1 General

5.2 Design

6 Pressure limitation

6.1 General

6.2 Safety valves, direct loaded and pilot operated

6.3 Bursting disc safety devices

6.4 Safety Valves & bursting disc safety devices in series or parallel

6.5 Controlled safety pressure relief systems (CSPRS)

6.6 Safety related measuring, control & regulation systems (SRMCR)

7 Hazard protection

7.1 Internal

7.2 External

7.3 Static electricity

8 Installation of pressure relieving devices

8.1 General

8.2 Safety valves or the main valve of a CSPRS

8.3 Installation of bursting disc safety devices

8.4 Safety valve and bursting disc safety devices in combination

8.5 Isolation of relieving safety systems

9 Indicators and alarms

9.1 General

9.2 Pressure indicators

9.3 Temperature indicators

9.5 Signals and warning devices

10 Inspection and maintenance

Annex A (informative) Sizing of multiple safety valves

Annex B (normative) Requirements for level limiters

Annex C (informative) Selection of safety accessories for pressure limitation

Annex D (normative) Bursting disc safety devices downstream of safety valves

Annex E (informative) Scope of the standard

Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives

Bibliography

BS EN 764-7:2002

Pressure equipment - Safety systems for unfired pressure vessels

Current, Under Review

Published:

13 Jun 2002