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

Mon Feb 27 10:30:00 EST 2017

Marc:

If there is a meeting to discuss this, please let me know.  The reason
for my concern is that it appears that work is being stopped or delayed
to satisfy issues that are not requirements - but rather merely opinions.
In the case of this issue, dozens of e-mails have criss-crossed the Lab
for the past 2 weeks that appeared to 'require' an equipment test. The
last e-mail from Rusty suggests that this test is entirely discretionary.

I can appreciate Facilities asking for discretionary tests and confirmations
for the purpose of ensuring safety - however, they should not be couched
as requirements when they are not.

Walt

Marc McMullen wrote:
>
> Good Morning Rusty,
>
> I have attached a document which has the design calculations for the 
> winch operation. Additionally, the assembly procedure, structure, 
> winch operation have been done in Italy by the INFN group. They are 
> scheduled to travel to JLab next week to reassemble the detector with 
> assistance of the Physics Detector Support Group. Hopefully the 
> calculations will provide the solution for any issues concerning the 
> winching operation. If you have remaining questions or concerns, we 
> could set up a meeting to address the issues. I am also adding the 
> calculations to the supporting documents of the TSOP.
>
> Regards,
>
> Marc
>
>
> On 2/24/2017 7:44 PM, Rusty Sprouse wrote:
>>
>> 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
>>
>
> -- 
> Marc McMullen
> Detector Support Group
> 757-269-7738
>
>
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