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From: DES 
Sent: January 2014 12:29
To: a ECF

Subject: Cont?cl of work event in shiplift

- 

Tried calling you both but no answer. Although only iouitrit out on return from leave, over
the Christmas period {23 Dec to be precise). a employee removed some grills
from an external} tank and stuck his head inside the tanlr. tor a few minutes. Unfortunately

he should have removed the grills from ank, but actual! removed them
from what are colloquially sailed the tanks which are On realisino

the error, a radiological Survey was cocrtucted which indicated that the inside of the tank
would have been a controlted area iaw our arrangements {highest reading inside was-
?we should set up area at 2.5 more Sir. although legal rec- .irernent is micro
Sir). Rough est mate of "extra" dose received less than 0.5 micro 8r {whilst working

outside the tank he was in an area where the eiwironnlentel reading was
So whilst doses are at the trivial end. there was a human error which. Caused an unplanned
extra exposure. There is obviously atso a control of work issue in "now he came to remove
the wrong griltes.

investigation undenrvay, SFM to Chair ERB and I understand lea safety standown
to he condtlotet?i.

will tom-era further details once i get teem.

Regards