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<p>Hi Mauri,</p>
<p>Here are some recommendations for the documents:</p>
<p>On the THA the hazards are appropriately evaluated. However, As a
safety warden I like to see THAs written as an operational
procedure, each block should be a step of "significant"operation
which gets evaluated in that row.</p>
<p>That said, you have evaluated the hazards but you didn't propose
a mitigation for step 2, which has a risk code of >2. This
looks to be a broad category, which may require a THA for
servicing detector components on its own.</p>
<p>For step 3, George has provided an operation manual for the gas
system and the DSG has a section of a manual for specific
operation of the gas controls system. You should refer to these
documents for gas operations.</p>
<p>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
</p>
<p>In the OSP, you do list the operational steps for the detector.
Again, you may want add a reference to the LTCC Gas Manual and the
Hall B Gas Controls Manual to start and stop gas operations.</p>
<p> Additionally, the procedures to do this are a semi-complex
sequence of steps, with specific timing/amounts of flow
(ie...metered purges). There are also complex steps to recover
C4F10 using a distillation process. <br>
</p>
<p>For these reasons, you should add language to the OSP which will
ensure named trained Hall B staff will be used to do the
operations listed in the manuals.</p>
<p><br>
</p>
<p>Thanks,</p>
<p>Marc<br>
</p>
<br>
<div class="moz-cite-prefix">On 10/20/2016 8:42 AM, Maurizio Ungaro
wrote:<br>
</div>
<blockquote cite="mid:4060A85A-6B85-4F84-9782-5CB602416180@jlab.org"
type="cite">
<pre wrap="">Hi all,
I'm attaching a draft of the THA and OSP for LTCC.
We can always change it later, but I would like to submit that today. There are a couple of entries gas-related that I'm not sure about. Any help on that and the documents in general is appreciated!
Thanks,
Mauri
</pre>
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<br>
<pre class="moz-signature" cols="72">--
Marc McMullen
Detector Support Group
757-269-7738</pre>
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