D. C. Cook response below.
Elizabeth Emily
Health Physicist
Cook Nuclear Plant
work: 269-465-5901 ext 2545
[email protected]
Benjy P Bertossi
<bertossib@dteene
rgy.com> To
Sent by: [email protected]
owner-powernet@hp cc
s1.org James P Stewart
<[email protected]>
Subject
07/16/2013 06:53 Powernet: DLR / TLD practices
AM
Please respond to
[email protected]
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Fermi 2 will be installing hand geometry this year and will allow security
keycards to go home. We currently store our DLRs on security key cards and
would appreciate your input on the below questions:
1) What type of DLR (TLD, OSL, Film) do you use? TLD
2) Does your site take DLRs home? Yes
3) If no, how/where do you store them on site?
4) If yes, do you use control dosimetry from on-site, off-site, or both to
subtract background radiation?
On-site is always done, initially an off-site was done that verified
backgrounds similar to on-site.
5) How do you do DLR exchange and how long does it take you?
Allow for two weeks-leave all of the TLDs at the exit point to the plant.
Workers going on vacation are encouraged to turn in TLDs early. Workers
coming back after the two weeks can pick them up at Dosimetry.
6) Any other pros/cons of taking DLRs home vs staying on site?
One of the benefits is that the TLDs are always on the individuals and
fastened securely. We see many more EDs going through our x-ray machines
than TLDs. We also have several radiation areas outside the main plant
access, so there would need to be multiple drop-off locations.
We do have a couple people each period who send their TLDs through airport
x-ray machines. Haven't seen any significant issues with off-site dose
besides x-ray machines. Most of the damage occuring to TLDs occurs onsite.
We require a WBC for outprocessing and collect workers TLDs at that point,
so we don't see many that do not return.
Please respond to Powernet or Jim Stewart directly, [email protected]
(734.586.1388)
Thanks, Benjy
Benjy Bertossi
Fermi2 - RP Supervisor
734-586-4935
[email protected]
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