NEN EN 12889 : 2000

Foreword
1 Scope
2 Normative references
3 Definitions
4 General
5 Construction components and materials
    5.1 General
    5.2 Pipes and joints
    5.3 Manholes and inspection chambers
    5.4 Delivery, handling and transportation
          on site
    5.5 Storage
6 Techniques
    6.1 Unmanned techniques
    6.2 Manned techniques
7 Requirements
    7.1 Safeguarding design assumptions
    7.2 Special requirements
    7.3 Safeguarding design assumptions
    7.4 Information about ground conditions
    7.5 Data collection during installation
    7.6 Stability during construction
    7.7 Overcut
    7.8 Overbreak
    7.9 Settlement and heave
    7.10 Deviation in line and level
8 Inspection and/or testing of pipelines after
    installation
    8.1 Visual inspection
    8.2 Leaktightness
9 Procedures and requirements for testing gravity
    pipelines
    9.1 General
    9.2 Testing with air (Method "L")
    9.3 Testing with water (Method "W")
    9.4 Testing of each individual joint
10 Testing of pressure pipelines
11 Qualification
Annex A (informative) Abstract from Council Directive
        of 17 September 1990 on the procurement
        procedures of entities operating in the water,
        energy, transport and telecommunication sectors

Applies to trenchless construction and testing of new drains and sewers in the ground, operating as gravity pipelines, formed using prefabricated pipes and their joints. Trenchless construction and testing of drains and sewers operating under pressure is also covered together with prEN 805. Also applicable to trenchless replacement techniques, but does not apply to renovation techniques for existing drains and sewers.