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Projects: Projects for Investigator
Reference Number NIA_NGET0212
Title Positioning ballistic screening on substation sites
Status Completed
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Civil Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
National Grid Electricity Transmission
Award Type Network Innovation Allowance
Funding Source Ofgem
Start Date 01 December 2018
End Date 01 September 2019
Duration ENA months
Total Grant Value £100,000
Industrial Sectors Power
Region London
Programme Network Innovation Allowance
Investigators Principal Investigator Project Contact , National Grid Electricity Transmission (100.000%)
  Industrial Collaborator Project Contact , National Grid plc (0.000%)
Web Site https://smarter.energynetworks.org/projects/NIA_NGET0212
Objectives This project will: examine the effect of adding screens of different heights and distance from a failing assets on the subsequent debris field by modifying the modelling software originally developed during the studies undertake in 2005, test other screening solutions and modify the model further to reflect the relative effectiveness of each solution that shows resaonable degrees of protection. study other asset failures including low pressure failures and use the data from those studies to further develop the computer simulation to add in different projectile/ballistic debris patterns and fireball behaviours. The project is broken down into three work packages as described in the scope section below. The costs, timescales and TRL set out in this PEA relate to work package 1 only. A procurement process will shortly begin for work packages 2 and 3 and the PEA will be updated with further detail once this is completed. Work packages 2 and 3 may be carried out in parallel or sequentially depending on the results of the procurement exercise and the availability of resources such as test facilities. Additional information about work packages 2 and 3 will be added prior to them commencing. This project is divided into three distinct work packages. Work package 1 will develop the original debris field modelling software to enable a number of variables to be introduced such that screens of different height and distance from a failing asset can be introduced and the resulting effect on debris pattern modelled. The updated modelling tool will have a simple graphical user interface and will be usable on any National Grid computer (this should ensure it is also usable by any other GB network). The aim is for the model to identify a location that represents the most exposed location. Work package 2 will assess a range of alternative screening options and assess their relative effectiveness as a barrier and identify the probability of different fragment sizes and velocities penetrating the barrier. The computer model developed as part of work package 1 will be extended further to allow users to vary the type of barrier to be modelled, taking due account of the relative effectiveness of each barrier type in intercepting or altering the trajectory of different size and velocity fragments. Work package 3 will investigate limitations of the model with lower pressure (eg 1-5 bar) failures. It will also investigate the behaviours of fireballs that may result from failure of mineral oil filled equipment. Depending on the success of these studies, the model will be updated further to enable a wider range of failure modes and impacts (such as a fireball) to be assessed when planning activies on sites affected by risk management hazard zones. Work packages two and three will involve desk based research and depending on the outcomes of that, may include destructive testing of equipment to provide data for modelling. The specific research objectives for this project are to establish: for a given screen height and position relative to a known piece of equipment, what is the expected probability of a fragment of porcelain sailing over the top of the screen? how effective other barrier systems (hera fencing, ISO containers, plywood or polycarbonate attached to pallisade/heras close boarded scaffold) are relative to the polycarbonate GRP screen developed to date, and what practical advantages do they offer. the effects on debris field from other modes of porcelain asset failure (for example low pressure failure), and study the extent of fireball risk from mineral oil filled equipment.
Abstract The overall objective of this project, and all the related work previously carried out, is to reduce the operational impact of the risk management hazard zones on our substation sites that are currently used to mitigate risks to substation staff.
Publications (none)
Final Report (none)
Added to Database 02/12/22