[Dsg-rich] Fwd: Re: Fwd: winch rating for RICH assembly

[Marco Mirazita]

Hi all,
as you can see we don't need a new winch and we don't need to do any 
load test.
Best regards,
Marco


-------- Messaggio originale --------
Oggetto: Re: Fwd: winch rating for RICH assembly
Data: 2017-02-24 13:10
Mittente: Bob Miller <rmiller at jlab.org>
Destinatario: Tomassini Sandro <sandro.tomassini at lnf.infn.it>
Cc: Dario Orecchini <dario.orecchini at googlemail.com>, Marco Mirazita 
<Marco.Mirazita at lnf.infn.it>



Hi Sandro,

This is not an under hook lifting device, so it does not require a JLab
load test.  If you are comfortable using it, then we do not need to do a
load test.

Regards,

Bob

On 2/23/2017 3:32 PM, Tomassini Sandro wrote:

> Hi Bob,
> yes, the structure was assembled and used to assemble the RICH at the
> Company that built everything.
> Sandro
> 
> Il 23/02/2017 21:27, Bob Miller ha scritto:
> 
> Hi Sandro,
> 
> Yes, I think we will need a fixture to load test the structure.
> 
> Has this structure been assembled and used already?
> 
> Thanks,
> 
> Bob
> 
> On 2/23/2017 3:22 PM, Tomassini Sandro wrote:
> 
> Hi Bob,
> unfortunately I do not have any plan and any tool ready.
> I envisage that we/you have to build a beam (steel extrusion) to
> connect to the pivoting part and with an eye bolt on the other side
> and in the middle a hole to attach 1250 kg at about the RICH
> barycenter. See Sketch below.
> I think this is the more realistic way to load correctly the
> structure.
> I do not have any drawing of the tool I mentioned but we can try to
> make a fast sketch and you should produce at Jlab.
> I do not know if you have a better solution.
> If you agree Dario or me can design it and you build it in US.
> Let me know
> Sandro
> 
> Il 23/02/2017 18:51, Bob Miller ha scritto:
> 
> Hi Sandro,
> 
> I am being asked to load test the RICH assembly structure. Do you
> have a plan or any tooling for how to load test this structure? It
> looks like we would need some kind of tool to take the place of the
> RICH box to apply the load to the structure.
> 
> Regards,
> 
> Bob
> 
> -------- Forwarded Message --------
> 
> SUBJECT:
> winch rating for RICH assembly
> 
> DATE:
> Wed, 22 Feb 2017 14:58:41 -0500 (EST)
> 
> FROM:
> Tyler Lemon <tlemon at jlab.org>
> 
> TO:
> Bob Miller <rmiller at jlab.org>, Mirazita Marco
> <marco.mirazita at lnf.infn.it>, dsg-rich <dsg-rich at jlab.org>
> 
> CC:
> Patrizia Rossi <rossi at jlab.org>
> 
> Hello Bob,
> 
> Please find attached slides from Marco Mirazita showing calculations
> for the planned rotation of RICH after the assembly of the detector
> shell.
> 
> The GR1000 winch (image of load specifications also attached), is
> rated for 1000 kg. Rusty Sprouse has not approved the load test at
> 1,250 kg due to the 1000 kg rating of the GR1000 winch.
> 
> However, it has been calculated that the maximum load exerted on the
> winch will be ~775 kg. Please let us know whether the rating of the
> GR1000 winch is adequate for the rotation of RICH using the lift
> procedure as shown in the slides. If it is not, we will find another
> solution.
> 
> Best regards,
> 
> Tyler
> 
> --
> -----------------------------------------
> Dr. Eng. Sandro Tomassini
> Istituto Nazionale di Fisica Nucleare
> Laboratori Nazionali di Frascati
> ---Research Division---
> P.O.Box 13 00044 Frascati (RM) Italy
> Tel. office: +39 06 9403 2919/8089
> Fax: +39 06 94032256
> e-mail: sandro.tomassini at lnf.infn.it
> http://www.lnf.infn.it/ [1]
> -----------------------------------------
> --

-- 
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 269-7867

-- 
-----------------------------------------
Dr. Eng. Sandro Tomassini
Istituto Nazionale di Fisica Nucleare
Laboratori Nazionali di Frascati
---Research Division---
P.O.Box 13 00044 Frascati (RM) Italy
Tel. office: +39 06 9403 2919/8089
Fax: +39 06 94032256
e-mail: sandro.tomassini at lnf.infn.it
http://www.lnf.infn.it/ [1]
-----------------------------------------
-- 

-- 
Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 269-7867



Links:
------
[1] http://www.lnf.infn.it/