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

[Marc McMullen]

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