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

[Rusty Sprouse]

The Load test was prescribed because design calculations were not 
provided and there was no evidence of a quality assurance inspection on 
the assembly

We continue lacking additional information a load test is prudent

If you choose to proceed without either the additional information or 
load test let me know and I will sign off noting your decision

Just let me know what you decide


On 2/24/2017 10:38 AM, Marc McMullen wrote:
>
> Hi Rusty,
>
> Tyler is referring to TOSP 64632 (Assembly of the RICH detector) . You 
> returned that one to me pending a 125% load test.
>
> https://mis.jlab.org/mis/apps/mis_forms/operational_safety_procedure_form.cfm?entry_id=64632
>
> Thanks
>
> Marc
>
>
> On 2/24/2017 10:06 AM, Tyler Lemon wrote:
>> Hello,
>>
>> Bob Miller (emails below in blue) has stated in Email #2 below that 
>> the winch to be used for RICH rotation during assembly "is not an 
>> under hook lifting device, so it does not require a JLab load test." 
>> The winch has been used to assemble the structure in Italy (Email #3 
>> from Sandro).
>>
>> We would like this matter (load testing) to be resolved between Rusty 
>> Sprouse and Bob Miller as soon as possible. We would like to have the 
>> TOSP as soon as possible so that we have no delay in proceeding with 
>> RICH construction when INFN collaborators arrive at JLab on March 6, 
>> 2017.
>>
>> Best regards,
>> Tyler
>>
>>
>> *EMAIL #1*
>> *From: "Mirazita Marco" <Marco.Mirazita at lnf.infn.it>*
>> *To: *"dsg-rich" <dsg-rich at jlab.org>
>> *Sent: *Friday, February 24, 2017 7:45:31 AM
>> *Subject: *[Dsg-rich] Fwd: Re: Fwd: winch rating for RICH assembly
>>
>> 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
>>
>> *EMAIL #2*
>> -------- 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
>>
>> *EMAIL #3*
>> 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
>>
>>
>> **EMAIL #4**
>> 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
>>
>>
>> **EMAIL #5**
>> 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
>>
>> *EMAIL #6*
>> 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
>>
>>
>> *EMAIL #7*
>> 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
>>
>>  --
>>
>>
>>
>> _______________________________________________
>> Dsg-rich mailing list
>> Dsg-rich at jlab.org
>> https://mailman.jlab.org/mailman/listinfo/dsg-rich
>
> -- 
> Marc McMullen
> Detector Support Group
> 757-269-7738

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