[ RadSafe ] Unacceptable Reason For A Dose

[Brennan, Mike (DOH)]

I don't disagree.  In any case, both the lack of good fit on the respirators and eating in a contaminated space are unacceptable. 

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Thompson, Dewey L
Sent: Tuesday, June 21, 2011 7:04 AM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Unacceptable Reason For A Dose

Well, Mikey;

I had not considered the intake potential of the actual food being contaminated, you may have a point there.  

But on the respirator issues, you are flat wrong.  Here is some data for you:

Wearing a Scott negative pressure filter respirator on a TSI Port-A-Count, the fit factors were:

Without Temple Bar glasses, good seal to face.
Normal Breathing - 8000
Deep Breathing   - 2400

Using Temple Bar safety glasses, frame thickness approximately 1/16 inch (1.6 mm)

Normal Breathing - 1.8-2.0
Deep Breathing   - 1.0-1.1

You can do a napkin calculation if you care and estimate the relative intake of radioactivity for a couple of minutes chomping down a sandwich vs wearing a mask for several hours.

Most respectfully
Dewey


: : : : : : : : : : : : : : : : : : : : : : : : : 
DEWEY THOMPSON 
Staff HP
Radiation Protection Department
T 314.225.1061
F 573.676.4484
E DThompson3 at ameren.com

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Brennan, Mike (DOH)
Sent: Monday, June 20, 2011 11:48 AM
To: The International Radiation Protection (Health Physics) MailingList
Subject: Re: [ RadSafe ] Unacceptable Reason For A Dose

While I agree that anyone who might need to work in a respirator should
be fit for one (including either the right kind of glasses or corrective
surgery), I think the bigger problem was them eating at their station.
Taking your mask all the way off and eating food that was exposed to the
contamination in the room seems like a bigger source than air that
sneaks past the earpieces of glasses.

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu
[mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Jeff Terry
Sent: Saturday, June 18, 2011 7:13 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: [ RadSafe ] Unacceptable Reason For A Dose

I am sorry but this is inexcusable. You have to fit respirators, before
allowing someone into an airborne contamination area. 

http://www.sacbee.com/2011/06/18/3710803/nuclear-plant-workers-safety-ma
sk.html


Jeff


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