Original was

NRC: "Reactor Concepts Manual | Boiling Water Reactor (BWR) Systems"

http://www.nrc.gov/reading-rm/basic-ref/teachers/03.pdf

Here's one with labels:

http://i.imgur.com/Oj4kg.png

Magdi Ragheb, "Containment Structures"

https://netfiles.uiuc.edu/mragheb/www/NPRE%20457%20CSE%20462...