[Dsg-rich] CLAS12 RICH OSP

[David Meekins]

Dear All, 

After talking with Patrizia and looking over the recommendations from the last ERR, I have attached a response to the ERR item number 4. In my opinion the OSP may be drafted at any time but the system shall not be deemed safe to operate until the system has been turned over to the system owner. The owner needs to be identified clearly and this person must have the required training SAF 103C which is being offered soon and is classroom based. Note that JLAB design authorities do not "approve" systems. This approval is a multi step process and is described in ESH&Q manual Chapter 6151. 

Good luck 

David Meekins 
Staff Scientist 
Thomas Jefferson National Accelerator Facility 
12000 Jefferson Ave 
Newport News Va. 23606 

Office: 757-269-5434 
Cell: 757-968-9076 


From: "George Jacobs" <jacobsg at jlab.org> 
To: "Marco Contalbrigo" <mcontalb at fe.infn.it> 
Cc: "David Meekins" <meekins at jlab.org>, "Marc McMullen" <mcmullen at jlab.org>, "Valery Kubarovsky" <vpk at jlab.org>, dsg-rich at jlab.org 
Sent: Wednesday, January 4, 2017 11:24:03 AM 
Subject: Re: CLAS12 RICH OSP 

Hi Marco, 

The system will not be operated prior to approval. 

As far as I know, nothing has been approved and this process is on hold until after the KPP. For more information, you will need to direct your questions to Dave Meekins, he is the DA for the RICH. 

George 

On 1/4/2017 10:53 AM, Marco Contalbrigo wrote: 


Hi George, 
my question is specifically related to the RICH recommandation which 
reads: 

The air-cooling and nitrogen gas systems are pressure systems and 
approvals from the Pressure Systems design authority are required 
before operation. 

Forgive my ignorance: I am not sure WHEN the approval should be 
granted. I assume in order to "modify the hardware" (as you say) you 
need to follow a design (already) approved by an authority. 
Do you actually mean the DESIGN is still being modified, to get 
approval and then a new hardware layout conform to JLab regulations ? 
Or there is already a new approved design and you are as a 
consequence working on the new hardware ? 

Thnaks, Marco. 

On Wed, 4 Jan 2017, George Jacobs wrote: 


BQ_BEGIN
Hi Marco, 

The hardware is in the process of being modified to comply with JLAB's pressure system requirements. This work is currently on 
hold until after the KPP run. 

George 

On 1/4/2017 10:30 AM, Marco Contalbrigo wrote: 
Dear George, 
thank you so much. I appreciate the manuals and diagrams. Does it means the design is now approved (by the pressure 
system Design Authority) or 
is this still in progress ? 
Thanks, Marco. 

On Wed, 4 Jan 2017, George Jacobs wrote: 

I have attached the P&I diagrams along with the operations manual for your OSP. The hardware is being 
modified to comply with 
JLAB's pressure systems requirements. 

The EPICS screens and cRIO Controls Manual are a separate entity. 

George 

On 1/4/2017 10:02 AM, Marco Contalbrigo wrote: 
Dear David, Marc and George, 
Hall-B will undergo Accelerator Readiness Review (ARR) next week. As part of this review, it is 
required to answer to 
the recommendations of CLAS12 ERR. For the RICH detector, they deal with the OSP. 

To my understanding, you had a meeting in November to clarify the remaining issues about the RICH 
pressure gas 
system. May you provide 
me with an update of the OSP status ? I would need to send this 
information to Eugene Pasyuk within today. 

Thank you a lot, Marco. 









BQ_END

-- 
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606

(office) 757-269-7115

(cell)   757-876-0480

(email) jacobsg at jlab.org (website) https://userweb.jlab.org/~jacobsg 

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