[dsg-eic_dirc] DIRC laser safety document

[Beni Zihlmann]

Regarding the "Visitor, Spectator" section, what is the purpose of such?
I guess Greg can answer that. Depending on the answer the laser may not 
be needed to operate
in that scenario.??

cheers,
Beni

On 12/13/22 16:19, Jennifer Williams via dsg-eic_dirc wrote:
> Hi Marc,
> I have a few questions/comments for the documents.
>
> I tracked changes and made comments in the margins.
>
> Please let me know if you have any questions.
>
> Thanks
> Jen
> ------------------------------------------------------------------------
> *From:* dsg-eic_dirc <dsg-eic_dirc-bounces at jlab.org> on behalf of Marc 
> Mcmullen via dsg-eic_dirc <dsg-eic_dirc at jlab.org>
> *Sent:* Monday, December 12, 2022 4:12 PM
> *To:* Tyler Lemon <tlemon at jlab.org>; dsg-eic_dirc at jlab.org 
> <dsg-eic_dirc at jlab.org>
> *Cc:* Patrizia Rossi <rossi at jlab.org>
> *Subject:* Re: [dsg-eic_dirc] DIRC laser safety document
> Thanks Tyler,  I'll go through the documents and make the appropriate 
> changes.
>
> Marc
>
> ------------------------------------------------------------------------
> *From:* Tyler Lemon <tlemon at jlab.org>
> *Sent:* Monday, December 12, 2022 3:39 PM
> *To:* dsg-eic_dirc at jlab.org <dsg-eic_dirc at jlab.org>; Marc Mcmullen 
> <mcmullen at jlab.org>
> *Cc:* Patrizia Rossi <rossi at jlab.org>
> *Subject:* Re: DIRC laser safety document
> Hi Marc,
>
> I've looked over both documents and have some comments and questions:
>
> _General_
> - In both documents, the laser manufacturer is named as "Kimmon". On 
> the laser documentation, the manufacturer is listed as "Kimmon Koha". 
> It may not be important, but I thought I'd mention it.
>
> _Laser System Specific Lesson plan document:_
> - Page 1: under "4.0 Target Audience", the room number is incorrect in 
> the text box that says "Workers need to work in the EEL 102A laser room"
>
> - Page 1: under "7.0 Aids/Handouts" for the text box #2, the contents 
> look incomplete or cutoff. All I can see in that box is "Brief 
> Description: laser system for"
>
> - Page 2: under Objective A, SoB A.3, the eye protection is noted as 
> 7+ OD. Should this be changed to 2+ to match the LOSP?
>
> - Page 6: under SoB D.1, the low-power filter will reduce the laser 
> power by a factor of 100 (document currently says 10).
>
> _Laser Operational Safety Procedure:_
> - Page 4: What is the "Laser Process" for the potential hazard 
> "Temporary or permanent eye damage"? If it's "Operations", that 
> process has another "Temporary or permanent eye damage" hazard row on 
> page 2; could the two rows be combined?
>
> - Page 8: It says "The laser housing is mounted on a stage." From the 
> diagram and from what we've talked about, I thought the laser housing 
> is on a fixed height stand. In the diagram also on page 8, it looks 
> like the laser housing is sitting on extruded aluminum.
>
> - Page 9: under "Hazards" there is "(2+)" after any time it says 
> "laser eye protection". Making it say "(OD 2+)" might make it clearer 
> that the glasses need to be rated correctly and avoid the chance of 
> any misunderstandings as to what 2+ means
>
>
> -Tyler
> ------------------------------------------------------------------------
> *From:* dsg-eic_dirc <dsg-eic_dirc-bounces at jlab.org> on behalf of Marc 
> Mcmullen via dsg-eic_dirc <dsg-eic_dirc at jlab.org>
> *Sent:* Monday, December 12, 2022 10:31 AM
> *To:* dsg-eic_dirc at jlab.org <dsg-eic_dirc at jlab.org>
> *Cc:* Patrizia Rossi <rossi at jlab.org>
> *Subject:* [dsg-eic_dirc] DIRC laser safety document
> Hi Beni and Greg,
>
> Attached is the latest update to the LOSP/THA document. I have made 
> some changes to the procedure section and included the Maximum 
> Permissible Exposure information provided by Jen Williams. The 
> procedure section changes included the same details which are in the 
> Laser specific lesson plan and additional text on the "sweep" 
> sub-procedure.
>
> If everyone can review this by Tuesday, and send comments. I can make 
> those changes and submit this for SME reviews. This will put the 
> document on track for approval just after the return from the holiday 
> break.
>
> Regards,
> Marc
>
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