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Minefield presentation Original
- 1. Balfour Beatty & Kier – Joint Safety Initiative
- 2. Today’s Agenda • Housekeeping • Today's crossword • Perceived risk • H5O performance • Summary
- 3. Today’s Crossword • An explosive, incendiary or other destructive substance _ _ _ _ (4 letters) • An area of ground containing explosives or situation beset with hidden problems _ _ _ _ _ _ _ _ _ (9 letters)
- 4. Minefield Wikipedia – Signs of a potential Minefield • Signs of road repair, this includes paved areas, new fill, road patches • Odd features in the ground or patterns that are not present in nature.
- 5. Today’s Crossword • An explosive, incendiary or other destructive substance • An area of ground containing explosives or situation beset with hidden problems A electric cable or gas pipe?? A Site?
- 6. Minefield Wikipedia – Signs of a potential Minefield construction site • Signs of road repair, this includes paved areas, new fill, road patches • Odd features in the ground or patterns that are not present in nature.
- 7. Perceived risk How you see or perceive “risk” determines how you manage it!
- 8. Perceived risk Many rules can strip us of the most important thing – Our own social responsible behaviour! (Hans Monderman – Professor of Traffic management )
- 9. Perceived risk Low Voltage often seen as Low risk?
- 10. Perceived risk A Cable or an explosive device?
- 11. Perceived risk An already located Gas pipe or a continuous hazardous area?
- 12. Perceived Risk Site or a minefield?
- 13. CABLE STRIKES CONTINUE TO BE ONE OF OUR HIGH RISK AREAS Last year in the UK 15 people died and 670 will never work again after striking buried services
- 14. CABLE STRIKES CONTINUE TO BE ONE OF OUR HIGH RISK AREAS An unstable joint, causing an explosion. Pimlico London
- 15. Perceived risk There are known known's. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know. Donald Rumsfeld
- 16. Perceived Risk – Known unknown
- 17. H50 Performance 7 Incidents (10 services damaged)in less than 3 months! ( zero year to date prior to May) May – 4 x service pipes & BT – Quintrell downs May – LV cable – New Mill Ind Est , Modbury May – LV cable – Truro June – HV at Mount Pleasant road, Truro June – Overhead BT (confirmed as dead) at Northam Burrows July – BT at Barrack Road, Ottery st Mary July – HV at Quintrell downs
- 18. Think, Act, Prevent If you were told that a explosive was present – What would you do differently?
- 19. Thank you for listening
- 20. Any questions?
Editor's Notes
- This presentation was produced in collaboration with both Balfour Beatty and Kier Management and Safety persons and is based around the perception of risk.
- Time – 5 minutes Housekeeping – include fire alarms & muster point, toilets, phones on silent, general facilities and any site specific detail. Read Agenda but don’t say what today is about
- Ask the questions to the audience stating these are oxford dictionary definitions Answers: Bomb and Minefield
- This is what Wikepedia says ,about a Minefield Ask the audience does this remind you of anything?
- Same slide again but press for answers (Compare these to our works) Ask the team if there are any other examples which could substitute the words Bomb and minefield,
- Same again – compare to our site (ask audience ring any bells with what you look for?)
- Ask audience if they undertake any of these activities? , I will bet money that you prepare, you listen intently to instruction and you ensure you are alert to your surroundings, and don’t cut corners in any of the safety processes
- Hans Monderman (Dutch Professor of Traffic management) was tasked with reducing accidents in key black spots in Holland and Germany, Makkinga, Drachen and Bohmite were chosen towns for a number of trials. Hans philosophy was centred around the behaviour on an ice rink and how everyone just adapts, often where the situation is unclear we are forced to drive more carefully and cautiously. Hans removed all signage, segregation markings in these towns and the results were dramatic. Hans also felt that drivers often disregard social responsible behaviour when given regulations, government processes, rules and additional support tools. Example: drivers may stop at a pelican crossing but will drive past someone crossing the street on every other occasion. Hans found that the greater the number of prescriptions the more peoples sense of responsibility dwindles. What are we trying to say? Well if we took away your Cat 4s, utility maps, marker boards, FR PPE away would you be more careful and cautious when excavating?, the answer would probably be yes. Whilst this is something we would not do for both moral and legal reasons we do want you to look at how you can bring that state of mind to safe digging practices. This was a question from one of the managers to a team who asked if we took all the drawings, CAT and other information from you could you not damage a service, the answer was yes but we would dig more carefully.
- This is from a recent H5O incident, Ask the question: do you think the individual involved in this utility strike see’s low voltage as low risk anymore? This was an incident where an individual hit a cable using a hand held breaker, while breaking concrete around the LV
- Self explanatory - how do you see a cable?
- Or a gas pipe? exposed services we still damage them even once we can see them
- Think about your site – Services can and quite often do kill! Scanning for services, scanning for explosives, what's the difference?
- Read
- The image shown is the pavement erupting in Pimlico London, no works being carried out, just an unstable joint, causing an explosion. Mine? The teams work around these potentials every day, dig carefully. This was an unstable joint which due to it degrading itself exploded as the chap seen on the mobile phone was walking by. This is a cable, but looks like any explosive device.
- Known Unknown’s! Through our personal experiences and the corporate memory we know to expect shallow services even if they are laid incorrectly. “Reports that say that something hasn't happened are always interesting to me, because as we know, there are known known's; there are things we know we know. (Shallow services?) We also know there are known unknowns; that is to say we know there are some things we do not know. (Shallow services?) But there are also unknown unknowns - the ones we don't know we don't know” (Shallow services?) We know to expect services at any depth, for too long we almost excused the fact we had hit a shallow service because it was not laid at a certain depth. But looking at the data from investigations we know we must start safe digging from the surface, not after we have lifted the tarmac or slabs.
- So why do we damage a known unknown? aren't they always shallow, why do we cut over the crossing point? Don’t cut across your marks, you have identified there is something there you must start digging safely from the surface.
- Stats to read, not all information as some is from ‘others’ Quintrell downs, one machine bucket pulled the whole lot here. All could have been traced but no procedures followed. LV Modbury, Kier site. the team had exposed and could clearly see the cable but still used the excavator too close and damaged it. LV Truro the images of the blackened PPE seen in the slides Overhead BT, the operator decided to take the risk and not wait for his Banksman, his perception of the risk and his ability proved him wrong and brought the cable down. HV Quintrell downs, the cable had been fully exposed as it crossed the excavation, it could been seen. The team moved passed the cable and resumed the use of the excavator immediately encountering an area of concrete, they used the bucket to break the concrete and on a back swing of the bucket hit the HV cable with the back of the bucket.
- Ask the question
- And finally: This is a recent Kier site where a number of bombs were found locally, in this instance they were WW11 bombs and not Western Power or Wales and West devices. Any questions?