cast_iron_tee - On the 29th of December, 1999, a component...

Info iconThis preview shows pages 1–15. Sign up to view the full content.

View Full Document Right Arrow Icon
On the 29 th of December, 1999, a component of a dry pipe fire sprinkler circuit failed, releasing several thousand gallons of water into one of the living areas of an assisted living community. The system had been pressurized on 12/26/99 The system had been pressure tested at 200 psi for 2 hours in September of 1999.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/4x3/4x1/2 reducing “tee” 3/4x3/4x1/2 reducing “tee” Fracture origin located in area of smallest wall thickness of the casting mounted specimen prepared by EFI for metallurgical analysis
Background image of page 2
origin Another perspective of fractured fitting Note that nearly half the fitting has been lost
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Note change in orientation of the fracture surface with respect to the longitudinal axis of the fitting Cracks always propagate in directions perpendicular to a tensile stress metallurgical specimen
Background image of page 4
Specimen containing origin of the fracture – Note location of origin and texture of casting walls and fracture surface
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
brittle fracture of casting
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 14
Background image of page 15
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/24/2011 for the course EML 3010 taught by Professor Mecholsky during the Spring '11 term at University of Florida.

Page1 / 15

cast_iron_tee - On the 29th of December, 1999, a component...

This preview shows document pages 1 - 15. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online