Potable and Irrigation Water Mains Method Statement

DOCUMENT NUMBER: CV-LIB-MS-CIV-034  
REVISION: 0  
DOCUMENT TYPE: Editable Microsoft Word Template  
LENGTH: 36 Pages  
CONTROLLED APPENDICES: 11

The CONSTRAVIO Potable and Irrigation Water Mains Method Statement, document number CV-LIB-MS-CIV-034, provides a comprehensive controlled methodology for installing, testing, disinfecting, commissioning and handing over buried potable and irrigation water-main systems.

This editable 36-page Method Statement covers the complete construction sequence—from approved material receipt and hygienic storage through trench preparation, pipe laying, jointing, restraint, hydrostatic pressure testing, flushing, disinfection, sampling, backfilling and final network handover.

It is intended for project managers, construction managers, civil engineers, utility coordinators, pipework supervisors, qualified jointers, QA/QC teams, HSE personnel, testing specialists and water-network subcontractors.

WHAT’S INCLUDED

• Document control, revision history, approval and distribution records  
• Project-adaptation protocol for converting the template into a project-specific method  
• Purpose, scope, boundaries and defined exclusions  
• Reference hierarchy and project-specific water-network particulars  
• Roles, responsibilities, release authority and competence requirements  
• Material, pipe, fitting, valve and restraint approval controls  
• Plant, tools, lifting equipment and testing-equipment requirements  
• Pre-construction planning, work permits and work-front readiness checks  
• Ten mandatory construction release gates  
• Design, authority, material and hygiene-release requirements  
• Material receipt, inspection, traceability and hygienic storage  
• Trench formation, bedding, pipe-invert and service-crossing controls  
• Pipe handling, lowering, laying, alignment and open-end protection  
• Mechanical, push-fit, fusion and welded jointing requirements  
• Valve, fitting, hydrant and chamber installation  
• Thrust restraint, anchors and temporary pressure-test ends  
• Hydrostatic pressure-test preparation, pressurisation, monitoring and acceptance  
• Controlled depressurisation, failure investigation, repair and retesting  
• Flushing, potable-water disinfection, sampling and residual monitoring  
• Surround, backfill, markers and as-built survey requirements  
• Commissioning, live-network interfaces, asset transfer and handover  
• HSE, environmental, water-quality and quality-control provisions  
• Records, defects, change control and restart authorisation

CONTROLLED APPENDICES

• Appendix A – Water-main work-front release checklist  
• Appendix B – Water-main installation and hygiene release card  
• Appendix C – Daily water-main installation inspection  
• Appendix D – Pipe, fittings, valves and restraint checklist  
• Appendix E – Pipe laying and jointing log  
• Appendix F – Hydrostatic pressure-test report  
• Appendix G – Flushing, disinfection and sampling record  
• Appendix H – Valve, fitting, restraint and asset register  
• Appendix I – Defect, leak, repair and change record  
• Appendix J – Water-main Inspection and Test Plan summary  
• Appendix K – Workforce briefing and acknowledgement

IMPORTANT

CV-LIB-MS-CIV-034 is a reusable controlled parent document and must be tailored to the particular project, route, pipe material, pipe diameter, network configuration, trench conditions, groundwater, existing services, testing criteria, disinfection requirements and utility-owner procedures.

The template does not replace approved drawings, utility permits, pipe-support or restraint calculations, specialist temporary-works designs, live-network isolation procedures, project-specific risk assessments or an approved Inspection and Test Plan.

All project fields, technical criteria, responsibilities, release gates, inspection points and acceptance requirements must be completed and reviewed by competent personnel before approval and construction.

LICENCE

Licensed for use by the purchasing organisation on its own projects. The document may be edited and reproduced internally but may not be resold, redistributed, sublicensed or published as a competing document product.