Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Who Destroyed Three Mile Island?
Search
Nickolas Means
April 17, 2018
Programming
0
920
Who Destroyed Three Mile Island?
(as presented at RailsConf 2018)
Nickolas Means
April 17, 2018
Tweet
Share
More Decks by Nickolas Means
See All by Nickolas Means
The Magnitude 9.1 Meltdown at Fukushima
nmeans
0
84
Taking the 737 to the MAX!
nmeans
0
71
The Original Skunk Works
nmeans
0
1.8k
Warning: May Be Habit Forming
nmeans
1
180
The Building Built on Stilts
nmeans
1
500
The Original Skunk Works
nmeans
1
730
How to Crash a Plane
nmeans
1
370
How To Code Like A Writer
nmeans
3
3.4k
You Are Not An Impostor
nmeans
11
18k
Other Decks in Programming
See All in Programming
Code as Context 〜 1にコードで 2にリンタ 34がなくて 5にルール? 〜
yodakeisuke
0
120
ruby.wasmで多人数リアルタイム通信ゲームを作ろう
lnit
2
330
AIプログラマーDevinは PHPerの夢を見るか?
shinyasaita
1
180
What Spring Developers Should Know About Jakarta EE
ivargrimstad
0
380
PHPで始める振る舞い駆動開発(Behaviour-Driven Development)
ohmori_yusuke
2
240
Discover Metal 4
rei315
2
110
エラーって何種類あるの?
kajitack
5
330
deno-redisの紹介とJSRパッケージの運用について (toranoana.deno #21)
uki00a
0
170
Benchmark
sysong
0
280
明示と暗黙 ー PHPとGoの インターフェイスの違いを知る
shimabox
2
390
Go1.25からのGOMAXPROCS
kuro_kurorrr
1
850
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
zsmb
1
280
Featured
See All Featured
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
124
52k
Gamification - CAS2011
davidbonilla
81
5.3k
Designing for Performance
lara
609
69k
Bash Introduction
62gerente
614
210k
Scaling GitHub
holman
459
140k
The Cost Of JavaScript in 2023
addyosmani
51
8.5k
Thoughts on Productivity
jonyablonski
69
4.7k
How to Think Like a Performance Engineer
csswizardry
24
1.7k
Practical Orchestrator
shlominoach
188
11k
The Language of Interfaces
destraynor
158
25k
Raft: Consensus for Rubyists
vanstee
140
7k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.8k
Transcript
Who Destroyed Nickolas Means @nmeans
Who Destroyed Nickolas Means @nmeans
@nmeans
@nmeans • #WhoDestroyedTMI @nmeans
@nmeans
@nmeans
@nmeans
@nmeans
@nmeans
@nmeans
@nmeans
@nmeans
Three Mile Island Nuclear Generating Station Londonderry Township, Pennsylvania @nmeans
Three Mile Island Harrisburg, Pennsylvania @nmeans • #WhoDestroyedTMI @nmeans TMI
Unit 2 906 MWe Babcock and Wilcox PWR
@nmeans Bill Zewe Fred Schiemann Ed Frederick Craig Faust
Condensate Polishers @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans ❌
Three Mile Island Unit 2 @nmeans ❌
Three Mile Island Unit 2 @nmeans ❌
@nmeans TMI Unit 2 Control Room
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
Pressurizer @nmeans Connection to Primary Cooling Loop Heating Element Water
Spray 1. Regulates System Pressure 2. Measures Water Level 3. Absorbs Pressure Shocks
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
@nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
@nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
@nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
Three Mile Island Unit 2 @nmeans
@nmeans
Three Mile Island Unit 2 @nmeans ❌ ❌
@nmeans
Fuel Rod Assembly @nmeans
Gary Miller George Kunder @nmeans
Three Mile Island Unit 2 @nmeans ❌
Three Mile Island Unit 2 @nmeans ❌ ❌ ❌
@nmeans
@nmeans
@nmeans
Final Core State @nmeans
@nmeans
Three Mile Island Today @nmeans
@nmeans
@nmeans
@nmeans Hindsight Bias
@nmeans Outcome Bias
@nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 @nmeans
Pressurizer @nmeans Connection to Primary Cooling Loop Heating Element Water
Spray 1. Maintains System Pressure 2. Measures Water Level 3. Absorbs Pressure Shocks
@nmeans
Heat at 100% 12 MWth 2,841 MWth Heat at Shutdown
(6.5%) 0.78 MWth 185 MWth @nmeans
Three Mile Island Unit 2 @nmeans
Three Mile Island Unit 2 Three Mile Island Unit 2
@nmeans
@nmeans
Three Mile Island Unit 2 @nmeans • #WhoDestroyedTMI Three Mile
Island Unit 2 @nmeans
@nmeans
@nmeans
@nmeans
@nmeans
@nmeans Human error is never the cause.
@nmeans Ask what is responsible, not who.
@nmeans Understand why it made sense.
@nmeans Seek forward accountability, not backward.
@nmeans Always look for the second story.
Who Destroyed Nickolas Means @nmeans
Who What Destroyed Nickolas Means @nmeans
@nmeans
@nmeans
Who What Destroyed Nickolas Means @nmeans