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Control Change Cause
Analysis
Brief description
3CA is a method of root cause analysis, designed to assist the
investigation of accidents of any type. Investigators can
use 3CA to help them identify significant episodes
within an accident and to structure inquiries into the reasons
underlying them. 3CA is available in two forms: A and B.
Development
3CA has its origins in a co-operative project run by
Humber Chemical Focus and the
UK Health & Safety Executive
(HSE)
in 2000. The A-Form of 3CA was produced in response to a
need for a root cause tool that was quick to learn,
systematic, transparent and which produces
results that are easy to communicate. During 2007-8, NRI
worked in partnership with HSE to revise the original 3CA materials; this work
produced the B-Form of 3CA. The two forms of 3CA are equivalent in terms of
function, they are designed to perform the same analytical tasks. The
differences between the two forms of 3CA are described in appendix 3 of the
3CA 'Form B' manual.
Download
- 3CA
(Form A) Manual
(NRI-3, December 2002,
ISBN 90-77284-03-6) [PDF
140k], version date
6 June 2008. Note: A second edition of this manual is in preparation.
- 3CA (Form B) Manual
(NRI-5, June 2008, ISBN pending)
[PDF
145k], version date
5 June 2008
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