[Dsg-htcc] HTCC O2 Concentration

[Jennifer Williams]

Hi Will,
I am available after 9am.
Jennifer


On 1/5/2017 4:22 PM, Will Phelps wrote:
> Hello Jennifer,
> I am currently measuring 19.8% O2 at the exhaust. We will not be opening up the detector today, but the preliminary plans are to open it up tomorrow for maintenance. When is it a good time for you to check the O2 concentration? We’ll wait on you to give us the go ahead before we open it.
> Thanks,
> -Will
>
>> On Jan 5, 2017, at 9:51 AM, Will Phelps <wphelps at jlab.org> wrote:
>>
>> We will go and measure the concentration now and try to get an estimate of the time when it will reach a safe level.
>> Thanks,
>> -Will
>>
>>> On Jan 5, 2017, at 9:49 AM, Jennifer Williams <jennifer at jlab.org> wrote:
>>>
>>> Yes, please use the oxygen monitoring to measure at the exhaust.
>>> Before you open the HTCC please contact me, I will bring another meter to provide a second check of oxygen levels.
>>>
>>>
>>> On 1/5/2017 9:45 AM, Will Phelps wrote:
>>>> Hello Jennifer,
>>>> We are not purging the HTCC volume with dry air and we would like you to check the O2 concentration before we open up the volume for maintenance(in accordance with the OSP). We don’t currently have an estimated time for the O2 concentration to reach a safe level as of this moment, but as soon as we know anything we will let you know. Also, we currently only have one way to measure the O2 concentration, the safety monitor, so we will attempt to use this to measure the concentration at the exhaust unless you advise otherwise.
>>>> Thanks,
>>>> -Will
>>>
>>
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