No Dig India Show 2024
14th International Conference & Exhibition on Trenchless Technology
Solutions for Water, Wastewater, Oil & Gas, Electricity & Telecommunication Utility Industry
18th & 19th November 2024
Panaji, Goa, INDIA
Why dig Trenches when there are better solutions
13. Summary of discussions
Session-wise summary of the discussions is as under:
Session 1: Introduction to Trenchless Technology |
|||
→ | Indian capacities in Trenchless technologies are less whereas their demands are high. |
||
→ | Due to explosive demand we will need to develop and enhance our trenchless capacities. |
||
→ | Experience and knowledge sharing in the sector is of extreme importance. |
||
→ | IndSTT provides a major platform for such exchange and knowledge sharing. |
||
→ | Utility system owners can help greatly in speeding the development and adoption of the technologies by developing their own capacities with the help of IndSTT. |
||
→ | Trenchless technologies offer an effective tool for subsurface construction activities. |
||
→ | Demand for utility services in urban areas is the primary driver of such constructions. |
||
→ | Due to explosive demand we will need to develop and enhance our trenchless capacities. |
||
→ | Trenchless capacity enhancement needs to address each type of stakeholders involved in the project delivery chain. | ||
→ | Technical Manpower, equipment, and materials need to match the specific project requirement. | ||
Session 2: Subsurface Utility Engineering and Geotechnical Techniques and Buried Pipeline Condition Assessment | |||
→ | Subsurface Utility Engineering is the need of the hour for Utility Data Management | ||
→ | Geophysical Techniques provide quick assessment of subsurface conditions in non-destructive manner | ||
→ | Geophysical Techniques provide detailed and continuous information as against drilling | ||
→ | Geophysical Techniques helps in eliminating surprises during project execution | ||
→ | Pipeline performance requirements are location and demand specific | ||
→ | These requirements can be categorized into four groups, hydraulic, structural, operational and environmental | ||
→ | Pipeline Condition assessment evaluates the pipeline performances | ||
→ | Composite Failures can have three stages | ||
→ | Reasons of failures need to be identified and appropriate remedial solutions need to be identified | ||
→ | Rehabilitation at the initial stages can be less expensive | ||
Session 3: Scope of Works for approved Trenchless Techniques | |||
→ | Contract planning needs to be initiated with the identification Scope of Works. | ||
→ | This would help in identifying gaps in the project execution strategy and plans. | ||
→ | This would also help in identifying the total impact of project, time as well as money wise. | ||
→ | Many untoward incidences get weeded out through this action. | ||
Session 4: Standard Operating Procedure for Trenchless Projects | |||
→ | Success of any Trenchless project is a direct function of the following: | ||
→ | Application of approved Trenchless Methods | ||
→ | Buried Utility location, mapping and data management | ||
→ | Selection of Appropriate Trenchless Technique | ||
→ | Critical Inputs for trenchless projects | ||
→ | Safe Working Practices near the buried Utilities | ||
→ | Remedial measures for surface restoration | ||
→ | Competent Project Supervision | ||
→ | Trenchless Technology is a State-of-Art construction process & quite different from conventional works. | ||
→ | Prior project planning for these projects is imperative as once project is started it would be too late to alter the parameters. | ||
→ | If unplanned works are executed many contractual claims will be generated. | ||
→ | It would be helpful to pre-qualify and enlist consultants and contractors for specific types and sizes works so as to reduce time and cost expenses later. | ||
→ | A central database at the apex level is proposed. | ||
Session 5: Trenchless Technology Technique Selection Process | |||
→ | A choice between Trenchless and Open Cuts will depend upon the following: | ||
→ | Application requirements; | ||
→ | Competing Construction costs of each method | ||
→ | Hard costs versus social or indirect costs | ||
→ | Land/Lane Rental/Easement costs | ||
→ | Cost versus depth relationship | ||
→ | Savings in specialized design features like | ||
→ | Energy savings | ||
→ | Maintenance costs | ||
→ | Replacement costs | ||
→ | Factors favoring Trenchless | ||
→ | A higher Land/Lane Rental/Easement cost | ||
→ | Deeper Installation | ||
→ | Reduced Social cost impact | ||
→ | Increasing density of Underground Utilities | ||
→ | Demands of Interference with future large scale underground structures | ||
→ | Changes of utility system to accommodate new methods or demands | ||
→ | Trenchless Technique selection is one of the critical link in the trenchless project delivery chain. | ||
→ | Any error in this activity has far reaching consequences that can be negative for the project | ||
→ | Once a project is approved through one construction method it may be too late to alter the process. | ||
Session 6: Risk Mitigation Measures for Trenchless Projects | |||
→ | Subsurface constructions pose likelihood of risks with long term consequences. | ||
→ | These may include operational impediments to third parties, damage to assets, compromise of safety of road users etc. | ||
→ | Consequences of poor risk management on the front of geotechnical issues may include heave or settlement beneath the pavement or slope failures. | ||
→ | For a successful trenchless project, typical risks associated with it need to be identified together with their causes. | ||
→ | Next step is the creation of risk assessment & mitigation framework addressing the risks at each level of subsurface construction project. | ||
→ | Risks need to be mitigated as low as reasonably possible without compromising on the structure quality. | ||
Session 7: Contractual & Techno commercial Guidelines for Trenchless Technology Projects | |||
→ | Clear and equitable contract conditions provide guidance for executing the contract with least of disputes. | ||
→ | Trenchless activities may require two types of contracts, Consultancy & Construction. | ||
→ | Trenchless activities may require two types of contracts, Consultancy & Construction. | ||
→ | In its absence the service provider doubles as the consultant and service provider. | ||
→ | Conflict of interest in such cases can never be avoided unless the owner takes care of consultant work scope. | ||
→ | Due to variance in the perception of the scope and quantities, unit rates quoted & awarded had much variance in different projects. | ||
→ | This variance was leading to unnecessary complications. | ||
→ | To overcome the impediment IndSTT published the first Schedule of Rate in 2002 to standardize the specifications and related unit rates. | ||
→ | It helps in arriving at project estimate faster and removes uncertainties to some extent. | ||
→ | Analysis of rates is little difficult due to state-of-art nature but scope of work supported by Schedule of rates can assist here. | ||
Session 8: Trenchless Technology Project Execution and Supervision | |||
→ | Trenchless Projects are challenging. | ||
→ | Success depends on proper supervision of activities. | ||
→ | Activities need to conform to sound engineering practices and through supervision it is ensured. | ||
→ | Project conclusion stage is quite important in the utility lifecycle as this is the phase transition point and the maximum data is available at this stage. Such data can assist the future repair & maintenance activities and therefore must be preserved properly. | ||
→ | Through appropriate supervisory actions one can | ||
→ | Monitor the overall progress of the project including activity supervision, testing and commissioning works related to the construction or maintenance of sub-surface utility networks through trenchless technology | ||
→ | Take engineering decisions consistent with the safety, health and welfare of the public | ||
→ | Take prompt actions to mitigate factors that might endanger the public or the environment | ||
→ | Articulate claims or estimates based on available data | ||
→ | Improve understanding of technology, its’ appropriate application, and potential consequences for future reference | ||
→ | It is the most important part of the trenchless operation chain as the final product shall only be as good as the supervision was |
ADB Report Part I | ADB Report Part II | ADB Report Part III | ADB Report Part IV |