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The Sewerage Rehabilitation Manual 4th Edition (SRM) has for over 25 years been a key document for planning upgrading work on sewer systems both in the UK and worldwide. It was extensively revised, updated, extended and developed into the Sewerage Risk Management website http://srm.wrcplc.co.uk.
The SRM presents an iterative, comprehensive risk based approach to the management of sewer system assets compatible with EN752:2008 Drain and Sewer Systems Outside Buildings and the UKWIR Common Framework, and able to take account of strategic drivers such as climate change adaptation and integrated urban drainage management.
The approach consists of a logical, 11 Step procedure to develop a Sewerage Management Plan (SMP) based on spatial units which can vary in size but still retaining the drainage area as an important fundamental unit for analysis and system management.
Some improvements include:
- Easer navigation;
- Hydraulic investigation updated to take account of latest technologies and the need for Integrated Urban Drainage Management;
- Sewer condition grading updated to include the new codes in MSCC5.
The SRM website update includes:
- A new look, feel and structure offering ease of use and better navigation
- Updates reflecting new standards
- A New section on Surface Water Management
- Different access options to suit customer needs
- New price structure
The content has been revised, updated, extended and set in a new context- that of an integrated, risk based approach with the costs of planned interventions to sewer systems underpinned by economic justification.
The risk based approach considers the likelihood of service failure effects together with all the potential consequences in an economic framework (benefits and costs). Advice and methods are included to facilitate the assessment of the likelihood of asset failure leading to the service failure effects, and consequence models identified. CONTENTSSewerage Management Planning:
- Initialise the SMP
- Collate Information
- Risk Assessment
- Assessment Sufficient
- Information Priority List
- Information Gathering
- Risk Priority List
- Interventions Study
- Intervention Priority List
- Product and Update Plan
Surface Water Management:
- Introduction to Sewer Renovation
- Renovation Materials
- Renovation Techniques
- Repair Techniques
- Structural Design
- Specifications for Sewer Renovation
- Installation Issues
- Appendix A - Data Collection
- Appendix B - Design Examples
- Risk Assessment
- Implement and Review
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