<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 14pt; color: #000000"><div>Dear All,</div><div><br data-mce-bogus="1"></div><div>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.</div><div><br data-mce-bogus="1"></div><div>Good luck</div><div><br></div><div data-marker="__SIG_PRE__">David Meekins<br>Staff Scientist<br>Thomas Jefferson National Accelerator Facility<br>12000 Jefferson Ave<br>Newport News Va. 23606<br><br>Office: 757-269-5434<br>Cell: 757-968-9076</div><br><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"George Jacobs" <jacobsg@jlab.org><br><b>To: </b>"Marco Contalbrigo" <mcontalb@fe.infn.it><br><b>Cc: </b>"David Meekins" <meekins@jlab.org>, "Marc McMullen" <mcmullen@jlab.org>, "Valery Kubarovsky" <vpk@jlab.org>, dsg-rich@jlab.org<br><b>Sent: </b>Wednesday, January 4, 2017 11:24:03 AM<br><b>Subject: </b>Re: CLAS12 RICH OSP<br></div><br><div data-marker="__QUOTED_TEXT__">Hi Marco,<br>
<br>
The system will not be operated prior to approval. <br>
<br>
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.<br>
<br>
George<br>
<br>
<div class="moz-cite-prefix">On 1/4/2017 10:53 AM, Marco Contalbrigo
wrote:<br>
</div>
<blockquote cite="mid:alpine.LRH.2.20.1701041644280.11937@axpfe.fe.infn.it">Hi George,
<br>
my question is specifically related to the RICH recommandation
which
<br>
reads:
<br>
<br>
The air-cooling and nitrogen gas systems are pressure systems and
<br>
approvals from the Pressure Systems design authority are required
<br>
before operation.
<br>
<br>
Forgive my ignorance: I am not sure WHEN the approval should be
<br>
granted. I assume in order to "modify the hardware" (as you say)
you
<br>
need to follow a design (already) approved by an authority.
<br>
Do you actually mean the DESIGN is still being modified, to get
<br>
approval and then a new hardware layout conform to JLab
regulations ?
<br>
Or there is already a new approved design and you are as a
<br>
consequence working on the new hardware ?
<br>
<br>
Thnaks, Marco.
<br>
<br>
On Wed, 4 Jan 2017, George Jacobs wrote:
<br>
<br>
<blockquote>Hi Marco,
<br>
<br>
The hardware is in the process of being modified to comply with
JLAB's pressure system requirements. This work is currently on
<br>
hold until after the KPP run.
<br>
<br>
George
<br>
<br>
On 1/4/2017 10:30 AM, Marco Contalbrigo wrote:
<br>
Dear George,
<br>
thank you so much. I appreciate the manuals and diagrams.
Does it means the design is now approved (by the pressure
<br>
system Design Authority) or
<br>
is this still in progress ?
<br>
Thanks, Marco.
<br>
<br>
On Wed, 4 Jan 2017, George Jacobs wrote:
<br>
<br>
I have attached the P&I diagrams along with the
operations manual for your OSP. The hardware is being
<br>
modified to comply with
<br>
JLAB's pressure systems requirements.
<br>
<br>
The EPICS screens and cRIO Controls Manual are a
separate entity.
<br>
<br>
George
<br>
<br>
On 1/4/2017 10:02 AM, Marco Contalbrigo wrote:
<br>
Dear David, Marc and George,
<br>
Hall-B will undergo Accelerator Readiness
Review (ARR) next week. As part of this review, it is
<br>
required to answer to
<br>
the recommendations of CLAS12 ERR. For the
RICH detector, they deal with the OSP.
<br>
<br>
To my understanding, you had a meeting in
November to clarify the remaining issues about the RICH
<br>
pressure gas
<br>
system. May you provide
<br>
me with an update of the OSP status ? I would
need to send this
<br>
information to Eugene Pasyuk within today.
<br>
<br>
Thank you a lot, Marco.
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</blockquote>
</blockquote>
<br>
<pre class="moz-signature">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7115
(cell) 757-876-0480
(email) <a class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org" target="_blank">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg" target="_blank">https://userweb.jlab.org/~jacobsg</a></pre><br></div></div></body></html>