NEN EN 1091 : 1997

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Description of the system
    4.1 Collection chamber and vacuum pipeline
    4.2 Vacuum station
5 Requirements
    5.1 General requirements
    5.2 Performance and quantitative requirements
    5.3 Design requirements
6 Installation
    6.1 Installation
    6.2 Tolerances
    6.3 Warning and location system
7 Testing and verification
    7.1 Testing of interface units
    7.2 Testing of pipelines
    7.3 Water tightness
    7.4 Commissioning tests
8 Commissioning
Annexes
A (normative) Testing of interface unit
B (normative) Testing of pipelines
C (normative) Collection chambers: internal water
    pressure test
D (normative) Commissioning tests
E (informative) Typical configurations
F (informative) Operational and maintenance information
G (informative) Sources of additional information
H (informative) Bibliography
I (informative) Application of vacuum sewerage

Defines performance requirements of negative pressure driven sewerage systems carrying domestic waste water independent of their material. Also describes additional performance characteristics of importance to the specifiers, designers, constructors and operators of vacuum sewerage systems. Does not include provision for the evaluating of system conformity.