W 402 Code of Practice 09/2010
Network and failure statistics - Collection and processing of data for the maintenance of water distribution systems
- Herausgeber/Verlag: DVGW
- Format: 19 pages
- Material: available as PDF only
- Ausgabe: 2nd edition 2010
- Hinweis: German version W 402
- Verkaufseinheit: 1
- Mindestabnahme: 1
- Artikel-Nr.: 508671
62,03 €*
This Code of Practice W 402 describes how to collect and process reliable inventory, condition and environmental data about water distribution systems. Condition data notably include data on damages especially failures. These data shall serve mainly as a basis for systematic maintenance in accordance with DVGW W 400‑3 (A) and DVGW W 403 (M). Reliable failure statistics are of particular significance in this context as they serve to predict failure and failure rates and, consequently, determine the residual service lives. This Code of Practice supersedes Instruction Bulletin W 395 dated July 1998.
Foreword
1 Scope
2 Normative references
2.1 Available in English as well
2.2 Available in German only
3 Terms and Definitions
3.1 General reference
3.2 Inventory data
3.3 Mains section
3.4 Failure
3.5 Type of failure
3.6 Failure data
3.7 Failure location
3.8 Failure rate
3.9 Point of failure
3.10 Cause of failure
3.11 Environmental data
3.12 Condition data
4 Principles and objectives
5 Maintenance-related data
5.1 General
5.2 Inventory data
5.3 Failure data
5.4 Further condition data
5.5 Environmental data
6 Data collection, data assignment and data storage
7 Inventory and condition data statistics (statistical processing)
7.1 Structured pipeline and failure grouping
7.2 Pipelines
7.3 Valves
7.4 Service pipes
7.5 Environment
7.6 Failure rates
8 Quality assurance in data collection and processing
9 DVGW Statistic Water
Annexes A ? F
1 Scope
2 Normative references
2.1 Available in English as well
2.2 Available in German only
3 Terms and Definitions
3.1 General reference
3.2 Inventory data
3.3 Mains section
3.4 Failure
3.5 Type of failure
3.6 Failure data
3.7 Failure location
3.8 Failure rate
3.9 Point of failure
3.10 Cause of failure
3.11 Environmental data
3.12 Condition data
4 Principles and objectives
5 Maintenance-related data
5.1 General
5.2 Inventory data
5.3 Failure data
5.4 Further condition data
5.5 Environmental data
6 Data collection, data assignment and data storage
7 Inventory and condition data statistics (statistical processing)
7.1 Structured pipeline and failure grouping
7.2 Pipelines
7.3 Valves
7.4 Service pipes
7.5 Environment
7.6 Failure rates
8 Quality assurance in data collection and processing
9 DVGW Statistic Water
Annexes A ? F