021 кнопка экстренной помощи

Every emergency button and handle you've been told not to touch, and what really happens when somebody does: the fire alarm pull station, the break-glass call point, the elevator alarm button, the escalator stop button, the gas pump shutoff, the train's emergency brake, the bus's emergency window, the factory e-stop, the plane's exit door and a nuclear reactor's SCRAM button. A pull station only calls the fire department if the system is monitored. On London's Underground, pull the alarm in a tunnel and the train keeps going, on purpose. An e-stop is not a lock. And the NRC's own glossary once said SCRAM stood for safety control rod axe man, until its own historian called it a myth. Every fact comes from the rule that sets it: building and fire codes, the elevator code, the Federal Railroad Administration, the FAA, OSHA, the Nuclear Regulatory Commission, UK law and Britain's rail accident investigators, all listed below. The drawings are our own. This video explains what each control does and why; it is not a guide to using or getting around any of them. Every one, in order 0:00 Don't touch? 0:30 The fire alarm pull station 1:19 The break-glass call point 2:09 The elevator alarm button 2:59 The escalator stop button 3:39 The gas pump shutoff 4:38 The train's emergency brake 5:50 The bus's emergency window 6:51 The factory e-stop 7:37 The plane's exit door 8:54 The SCRAM button 9:48 The man with the axe Sources NRC, Putting the axe to the scram myth (Thomas Wellock, 2011): https://www.nrc.gov/reading-rm/basic-... NRC glossary, scram (Internet Archive, May 2010): https://web.archive.org/web/201005281... NRC glossary, scram (Internet Archive, June 2011): https://web.archive.org/web/201106050... 10 CFR 50.72, immediate notification requirements: https://www.law.cornell.edu/cfr/text/... FAA Advisory Circular 25.783-1A, fuselage doors and hatches: https://www.faa.gov/documentLibrary/m... 14 CFR 25.811, emergency exit marking: https://www.law.cornell.edu/cfr/text/... 29 CFR 1910.147, the control of hazardous energy (lockout/tagout): https://www.law.cornell.edu/cfr/text/... 49 CFR 238.231, passenger equipment brake systems: https://www.law.cornell.edu/cfr/text/... 49 CFR 571.217, FMVSS 217 bus emergency exits and window retention and release: https://www.law.cornell.edu/cfr/text/... NTSB, Carrollton, Kentucky, 14 May 1988 (DCA88MH004): https://www.ntsb.gov/investigations/P... The Railway Byelaws (UK Department for Transport): https://www.gov.uk/government/publica... Regulation of Railways Act 1868, section 22 (as enacted): https://www.legislation.gov.uk/ukpga/... Fire and Rescue Services Act 2004, section 49: https://www.legislation.gov.uk/ukpga/... The Supply of Machinery (Safety) Regulations 2008, Schedule 2: https://www.legislation.gov.uk/uksi/2... Home Office, fire and rescue incident statistics, year ending March 2026: https://www.gov.uk/government/statist... US Access Board, guide to the ADA standards: elevators: https://www.access-board.gov/files/ad... California Code of Regulations, Title 8, section 3090 (escalators): https://www.dir.ca.gov/title8/3090.html Images and credits Alan Levine from Archydal, Canada, CC BY 2.0: https://commons.wikimedia.org/wiki/Fi... DanTD, CC BY 4.0: https://commons.wikimedia.org/wiki/Fi... Stock footage: Pexels Archive photos and engravings: Wikimedia Commons (public domain) Maps: Natural Earth (public domain) US government pages (eCFR, FAA, OSHA, NRC, NTSB, DOE): public domain UK legislation and government pages: contains public sector information licensed under the Open Government Licence v3.0 All drawings of the controls: our own #Explained #Safety #HowThingsWork