What Chance has Safety?

Transcription

1 What Chance has Safety? Wherever there is danger, there lurks opportunity; whenever there is opportunity, there lurks danger. The two are inseparable. Earl Nightingale (internationally acclaimed speaker. died 1989)

2 David Openshaw Technical & Safety Director Proactive Gas Safety Provide Verified and Nationally Accredited Compressed Gas and Cryogenic Safety Workshops EAL QCF Level 3 Awards Gas Safety Passport to HSE INDG 381 2

3 How many play the Lottery 3

4 Lottery Odds 6 balls 14 million :1 5 balls plus Bonus Ball 1.23 million :1 5 balls 55 thousand:1 4 balls 1000:1 3 balls 57:1 4

5 How do you use a baseball bat as weapon?

6 Baseball Bat Weapon 6

7 1 What is the temperature of liquid nitrogen? A c B c C c D c

8 2 On entering a 98% nitrogen atmosphere a person will experience? A. Feel no symptoms, fall unconscious after just two breaths B. Tight chest, feeling of drowning unconsciousness in 3 mins C. Light headedness, choking and gasping D. Cough uncontrollably, feel a choking sensation and pass out after 3 mins

9 From New Scientist 'We hear that... undergraduate stupidity knows no bounds. In an attempt to impress his or her classmates, a student took a sip of liquid nitrogen to prove that it is safe. It isn't. Within two seconds, the victim had collapsed in intense pain, unable to breathe and eventually passed out. All-night surgery ensued. 9

10 From New Scientist "My entire upper gastrointestinal tract was badly scarred and perforated," the hapless student recounts in an anonymous letter to the journal Chemical Health & Safety (vol. 9, p. 4). "They took away part of my stomach and had my entire digestive system, top to bottom, running on machine power for a while." The expanding gas also collapsed one lung. Eight weeks later the student was discharged from hospital. A little wiser, we hope.' 10

11 3 What is the liquid to gas ratio of liquid nitrogen? A. 1 to 120 B. 1 to 496 C. 1 to 683 D. 1 to 723

12 The volume of gas in this Dewar is approx 12 m³ 12

13 Liquid nitrogen pressure test 13

14 Nitrogen Accident: Chef loses hand 14 Jul 2009 A 24 year old chef lost both hands in a liquid Nitrogen explosion after attempting to use the cryogen in a molecular cuisine recipe. Sahnesiphon A team of doctors from the Emergency hospital at Marzahn, Germany, operated on Martin E. for eight hours and have sewed his left hand back on. 14

15 4 What is the typical pressures of compressed gas cylinders (Permanent Gases) A. 120 bar B. 150 bar C. 160 to 190 bar D. 200 to 230 bar

16 The volume of gas in a cylinder is approx 10M³ 16

17 The Gas Cylinder Lottery 17

18 Cylinder Construction 18

19 Cylinder Construction 19

20 Cylinder Construction 20

21 CP 27 21

22 The big three 22

23 5 The word cryo originates from? A. Latin cryos ice waters B. Northern Germanic Kaltro God of ice and snow C. Kryo Canadian Inuit for sudden pack ice D. Greek Kruos meaning cold 23

24 6 The three main gases in air by volume are? A. Nitrogen, Oxygen, Carbon Dioxide B. Nitrogen, Oxygen, Argon C. Nitrogen, Oxygen, Hydrogen D. Oxygen, Helium, Carbon Dioxide

25 78 % Nitrogen 21 % Oxygen 0.93 % Argon 25

26 7 The temperature of Dry Ice (solid CO2) is? A C B C C C D C

27 Dry Ice incident Friday, 24 January, 2003 A Birmingham radio station has been fined 15,000 after four people were left with severe frostbite after a competition stunt went wrong. BRMB challenged contestants to sit on blocks of dry ice - carbon dioxide frozen at temperatures of -78C - to win tickets and back stage passes for a music festival in the city. Two women and a man spent about 10 weeks in hospital recovering from extensive skin grafts, which they had to undergo following the Coolest Seats in Town event 27

28 Cryogenic incident Lottery Fire crews were called to deal with the cryogenic spillage 28

29 Edinburgh General Hospital Inquiry after man dies in chemical leak Full scale chemical incident Fire crews were called to deal with the spillage Liquid Nitrogen spillage 4 people affected BA and chemical suits Asphyxiant Knew danger but attempted rescue No oxygen Knew danger but attempted rescue Used it daily years of experience Building evacuated 29

30 Are your people playing chance with their future and yours? Proactive Gas Safety Ltd Unit 7 Cosgrove Business Park Daisy Bank Lane Anderton Northwich Cheshire CW9 6AA 30