[Dsg-ft] [Dsg-mvt] MVT gas mixing electronics/network equipment

[Marc McMullen]

Matt,

Later today I will go to the hall and come up with a sketch of the run. 
I spoke with Cyril Wiggins last week, he said he could calculate the 
lengths. Once I have the lengths, we can start procuring cable.  We will 
need an account code.

Marc


On 9/25/2017 1:07 PM, Matthew Marchlik wrote:
> Hi Marc,
>
> Is someone already looking into the cable lengths?
>
> Matt
>
> ----- Original Message -----
> From: "Marc McMullen" <mcmullen at jlab.org>
> To: "Matthew Marchlik" <marchlik at jlab.org>
> Cc: "Bob Miller" <rmiller at jlab.org>, dsg-mvt at jlab.org, dsg-ft at jlab.org
> Sent: Monday, September 25, 2017 12:59:16 PM
> Subject: Re: [Dsg-mvt] MVT gas mixing electronics/network equipment
>
> Hi Matt,
>
> The chassis will go through continuity and power testing this week. At
> that point it can be installed in the SFL3 Rack.
>
> As far as the cables, I am still have not received information on
> lengths for the cable runs. So that the cable can be procured.
>
> Can you provide some scheduling information for the MVT installation.
> The DSG manager will need this information for our own scheduling.
>
> Thanks,
>
> Marc
>
>
> On 9/25/2017 11:35 AM, Matthew Marchlik wrote:
>> Hi Marc,
>>
>> I'm looking for an update on some items:
>>
>> Has the interface chassis been relocated to SFL3?
>>
>> Have the five MFC power cables been run from SFL3 to the pad?
>>
>> Have the PT power and signal cables been run?
>>
>> Thanks,
>> Matt
>>
>>
>> ----- Original Message -----
>> From: "Marc McMullen" <mcmullen at jlab.org>
>> To: "Bob Miller" <rmiller at jlab.org>, "Matthew Marchlik" <marchlik at jlab.org>
>> Cc: dsg-mvt at jlab.org, dsg-ft at jlab.org
>> Sent: Friday, September 15, 2017 12:25:14 PM
>> Subject: Re: [Dsg-mvt] MVT gas mixing electronics/network equipment
>>
>> Hi Matt
>>
>> Relocation of the MVT mixing system controls to accommodate the
>> installation of the MVT mixing system on the Hydrogen Target gas pad.
>>
>> *MFC Power:*
>>
>> The mass flow controllers will be located outside. To ensure power
>> during outages we will need to locate the controls interface chassis in
>> Hall B on SFL3. Five MFC power cables should be run from the SFL3_south
>> through the penetration to the gas pad.
>>
>> *MFC Communication:*
>>
>> Per our conversation with Brent Morris, Hall B will need to run network
>> cable from an available UPS backed up network switch on the appropriate
>> subnet to the gas pad through the penetration.
>>
>> *Signals:*
>>
>> Pressure: The MVT has two pressure transducers which will be located on
>> the HT gas pad. Power and signal cable should follow the same route as
>> the MFC power to SFL3_south.
>>
>> Since the MFCs are temperature sensitive we should add redundant
>> Temperature monitoring to the new MFC housing. These signals can be
>> monitored by the Hall B Gas Controls software and provide that data to
>> EPICS.
>>
>> Type
>>
>> 	
>>
>> # of cables
>>
>> 	
>>
>> Start Location
>>
>> 	
>>
>> Comment
>>
>> MFC Power
>>
>> 	
>>
>> 5
>>
>> 	
>>
>> SFL3_S
>>
>> 	
>>
>> Expected (I) 0.167A. Shielded 2cond. 22 awg.
>>
>> MFC Communication
>>
>> 	
>>
>> 5
>>
>> 	
>>
>> Hall B
>>
>> 	
>>
>> Cat. 5
>>
>> Pressure Transducers
>>
>> 	
>>
>> 2
>>
>> 	
>>
>> SFL3_S
>>
>> 	
>>
>> Expected (I) 0.140A. shielded 3cond. 22 awg.
>>
>> MFC Temp monitor
>>
>> 	
>>
>> 2
>>
>> 	
>>
>> SFL3_S
>>
>> 	
>>
>> TBD
>>
>> Hall B should provide the cable length for these runs so that DSG can
>> procure the necessary cable. The previous length expectation was much
>> shorter.
>>
>> Regards,
>>
>> Marc
>>
>>
>> On 9/14/2017 3:59 PM, Marc McMullen wrote:
>>> Hi Matt,
>>>
>>> I'm scheduled to meet with DSG management in the morning to discuss a
>>> strategy for the relocation of the controls equipment. We need to make
>>> sure we cover all bases with power, network, UPS, and temperature
>>> monitoring of the MFCs. We will get back to you tomorrow on the matter.
>>>
>>> Regards,
>>>
>>> Marc
>>>
>>>
>>>
>>> On 9/14/2017 11:34 AM, Matthew Marchlik wrote:
>>>> Hi Marc,
>>>>
>>>> I met with Walt Akers, Tim Minga and Paul Powers this morning to
>>>> discuss installation of the system into 96B. The consensus is that
>>>> there is not way to modify the shed for flammable gas service without
>>>> spending significant time and money. Installing into 96C, hall C's
>>>> gas shed, was also discussed but would not work out.
>>>>
>>>> So, the mixing system and gas supply bottles will be installed on the
>>>> gas pad. Could you please reply to this email and list the
>>>> items/steps necessary for installation from DSG's standpoint we
>>>> discussed yesterday?
>>>>
>>>> Hall B will create a small insulated foam box to house the MFCs with
>>>> a segment of directly controlled heat tape within to keep the
>>>> temperature above 50F. It will have holes for the cables. Is there
>>>> any need to regularly access the MFCs after commissioning?
>>>>
>>>> The C4H10 line from the bottle to the MFCs will need to be wrapped
>>>> with insulation and heat tape set to 90F, same as the bottle blanket.
>>>> (George, can this be powered/controlled in series with the heater
>>>> blanket?)
>>>>
>>>> Hall B and I will update all of the PS documentation, drawings,
>>>> models and P&IDs.
>>>>
>>>> Thanks,
>>>> Matt
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From: "Marc McMullen" <mcmullen at jlab.org>
>>>> To: "Matthew Marchlik" <marchlik at jlab.org>, "Bob Miller"
>>>> <rmiller at jlab.org>, dsg-mvt at jlab.org
>>>> Sent: Wednesday, September 6, 2017 3:53:29 PM
>>>> Subject: MVT gas mixing electronics/network equipment
>>>>
>>>> Hi Matt and Bob,
>>>>
>>>> Is there a firm plan on the location of the MVT mixing instrumentation,
>>>> electronics, and network equipment. If the equipment cannot be located
>>>> in the Hall, I understand that the gas pad may be the next logical
>>>> choice. The instrumentation which will have to be at the gas panel are
>>>> the MFCs, which are temperature sensitive. The MFCs communicate via the
>>>> network, so under normal circumstances we would like to have a switch at
>>>> the location. We would also like to put the power for the MFCs (a
>>>> chassis containing a power supply) in that location if possible. To
>>>> house all of these components, may require large enclosure, or rack
>>>> which can be enclosed and climate controlled to keep all components
>>>> running and in good shape for the long run. At any rate, please let us
>>>> (DSG) know as soon as a decision is made, so that we can plan
>>>> accordingly.
>>>>
>>>>
>>>> Thanks,
>>>>

-- 
Marc McMullen
Detector Support Group
757-269-7738