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April 2010
05/06/10
Analysis of EFCOG Electrical Safety Charts
for April 2010.
DOE Electrical Events
are one month from an increasing trend.
There is currently three months in a
row one standard deviation above average.
DOE 08A Electrical Shocks is stable on the
recently increased baseline average.
Electrical Shocks and Near Misses 08J Chart has had a new
baseline average and control limit established reflecting the
adverse trend noted last month
The baseline average has gone from
2.9 per month to 4.3
per month, a nearly 50% increase
over the previous rate.
SC Program Office charts
are stable.
SC Total Events
are three of four at one standard deviation below average, one
month from an improving trend.
NA Program Office
Electrical Events and 08J Near Misses appear to be stable.
NA Program Office 08A Electrical Shocks have been elevated since
October 2009 and will have a new baseline average and control
limits calculated when the data stabilize.
March and April 2010 were two
standard deviations above average, another indication of this
ongoing trend.
EM Program Office Electrical Events has an increasing trend.
The past four months have been one
standard deviation above average.
EM Program Office 08J Electrical Near Miss Chart has had a new
baseline average and control limit established reflecting the
recent adverse trend in this data.
The baseline average has gone from
0.8 per month to 2.1 per month, more than double the previous
rate.
EM
Program Office 08A Electrical Shocks
Chart has had a new
baseline average and control limit established reflecting the
recent points above the old Upper Control Limit
The baseline average has gone from
0.4 per month to 0.9
per month, more than double the
previous rate.
Causes A3B1C03 –
“Incorrect performance due to mental lapse” and A4B1C01 –
“Management policy guidance / expectations not well-defined,
understood or enforced” remain in the top three leading causes
of Electrical Near Misses over the past 12 months.
Cause A3B3C05 –“ Incorrect
assumption that a correlation existed between two or more facts”
entered into the top three this month.
Raw Data Sheet
Electrical Events ORPS by
Month All DOE
08A Electrical Shocks ORPS by
Month All DOE
08J Electrical Near Miss ORPS by
Month All DOE
08J Electrical Near Miss - Top 7
Causes, All DOE
Electrical Events
ORPS by Month SC Program Office
08A Electrical Shocks ORPS by
Month at SC Program Office
08J Electrical Near Miss ORPS
by Month SC Program Office
Electrical Events ORPS
by Month NA Program Office
08A Electrical Shocks ORPS by
Month at NA Program Office
08J Electrical Near Miss ORPS
by Month NA Program Office
Electrical Events ORPS
by Month EM Program Office
08A Electrical Shocks ORPS by
Month at EM Program Office
08J Electrical Near Miss ORPS
by Month EM Program Office
For more information on Statistical Process
Control, please see
http://www.hanford.gov/rl/?page=1144&parent=169
or contact
Steven S Prevette
Fluor
Government Group
Savannah River Nuclear
Solutions
Steven.Prevette@srs.gov
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