Hi Kin,
Thanks. We'll send you, Carl and Pablo an email
when we're done so that there is no question that you
can reattach the braids when you are ready.
Ed
On 10/17/22 3:43 PM, Yip, Kin wrote:
Hi Ed,
Thanks for the message.
There should be no problem. (
I don’t think Pablo/Carl can finish Power
Supply short-circuit test by COB of Tuesday
😊
)
After the short-circuit
test, Rob Karl’s guys (mechanical group) will be
responsible for reconnecting the braids --- CAS needs to
detach the tapes first around the box.
Kin
Hi Kin and Carl,
We have some work to do inside the magnet bore
Tuesday during the day. Because of the new LOTO rules
for the sPHENIX Magnet
power supply, we would like
to keep the magnet power leads to the 1008 valve box
disconnected, as they are now, until our work inside
the
magnet bore is complete. We should be done by
COB Tuesday. We will let you know when we are done.
Then
you can have your techs reattach the braids when you
are done
with the PS short test. Is that OK? Thank you.
Ed
On 10/17/22 2:36 PM, Yip, Kin wrote:
Carl S. did another
hipot on the magnet when
all voltage taps were connected and terminated end to
end. At 520V, the leakage current is ~0 (< 10
microamp).
Before
hipot, Carl measured >
80 or even > 95
Mohm (depending on where he put the ground
to).
This shows that after cool-down,
there is no movement to cause short to ground. And
also, the terminations in the voltage tap box on the
platform has no short to ground problem. (10 days ago
or so, there was a 100 ohm to ground which turned out
to be just that the wires in 1008B mezzanine were not
terminated and shielded and so the freely hanging
wires touched the shield).
We saw Tim and his colleague (working
with Pablo) in 1008B and they even checked the quench
relay and watchdog signals. Carl faked a quench by
setting threshold to 0 and the power supply saw the
quench
🤗
Tim needs to look further into the
watchdog signal as there are some miscommunication in
the installation (which side us supposed to drive the
24 V) as Tim doesn't see it now.
-------- Original message --------
From: "Yip, Kin"
<kinyip AT bnl.gov>
Date: 10/17/22 1:08 PM (GMT-05:00)
To:
sphenix-magnet-l AT lists.bnl.gov
Cc: "Michnoff, Robert J"
<michnoff AT bnl.gov>
Subject: RE: Magnet mapping
installation and operation work plan --- LOTO
procedure
Attached is the box (for LOTO locks)
picture that we are talking about. Carl Schultheiss
just put his lock (in addition to CAS) before he went
to hipot.
-------- Original message --------
From: "Yip, Kin"
<kinyip AT bnl.gov>
Date: 10/17/22 9:52 AM (GMT-05:00)
To:
sphenix-magnet-l AT lists.bnl.gov
Cc: "Vasquez, Joel"
<jvasquez AT bnl.gov>, "Pontieri, Chris"
<cpontieri AT bnl.gov>, "Sandberg, Jon N"
<jsandberg AT bnl.gov>
Subject: RE: Magnet mapping
installation and operation work plan --- LOTO
procedure
Hello Russ and all,
45 minutes ago or so, I
“caught” Pablo Rosas, Tim Costanzo et. al. before
they drove to 1008B mezzanine to continue the
short-circuit test.
And I’ve also found Jon
Sandberg.
Pablo told me that a formal
LOTO procedure would take weeks and he’d get
approval from Jon to write a temporary one.
Jon agrees and he’ll talk
with Pablo to have this LOTO procedure as soon as
possible (even though Pablo is busy).
Kin
PS:
This morning, when I said
to Pablo to write a “simple” LOTO procedure, he
laughed at me with the CAS Watch colleagues and said
“no LOTO
procedure is simple”
☹
From:
Feder, Russell
<rfeder AT bnl.gov>
Sent:
Sunday, October 16, 2022 9:30 AM
To:
O'Brien, Edward
<eobrien AT bnl.gov>; Haggerty, John <haggerty AT bnl.gov>;
Mills, James A
<mills AT bnl.gov>;
Pontieri, Chris
<cpontieri AT bnl.gov>; Vasquez, Joel <jvasquez AT bnl.gov>;
Toldo, Frank A
<fatoldo AT bnl.gov>;
Yip, Kin
<kinyip AT bnl.gov>
Subject:
Fw: Magnet mapping
installation and operation work plan
Team
I received this
sPHENIX LOTO
justification memo written by Jon
Sanberg from Mike Danny late Friday
afternoon. I had been emailing Mike Gaffney and
Mike Danny about the Magnet Mapping work permit
and trying to find a way to simplify safety
controls on our work around
sPHENIX once the power
supply is connected.
Jon
Sanberg wrote up
this attached LOTO justification and scenario.
We still need a complex LOTO procedure written
by a qualified person.
This is only temporary, in place
until mapping is done and we can disconnect the
power supply and also get outside the USI
"bubble".
Russ
Russell Feder
Brookhaven
National Lab
sPHENIX
Chief Mechanical Engineer
631-655-2491
From:
Dany, Michael <mdany AT bnl.gov>
Sent:
Friday, October 14, 2022 4:16 PM
To:
Gaffney, Michael <gaffney AT bnl.gov>;
Feder, Russell <rfeder AT bnl.gov>
Subject:
RE: Magnet mapping installation and operation work
plan
Russ,
I have already
contacted Eric Johannsen and copied him on Jon
Sandberg’s proposed LOTO scenario (attached).
He will review but is out on business travel
next week. I’ll follow up.
M. Dany
From:
Gaffney, Michael <gaffney AT bnl.gov>
Sent:
Friday, October 14, 2022 4:04 PM
To:
Feder, Russell <rfeder AT bnl.gov>
Cc:
Dany, Michael <mdany AT bnl.gov>
Subject:
RE: Magnet mapping installation and operation
work plan
That may be
the easier way if there is one output valve.
With the
LOTO issue, this is a compliance to OSHA and I
would advise to get the expert involved in
determining if it falls under Service and
Maintenance or Operational. Mike Dany know Eric
Johannsen and before BSHO gets involved, it
would be good to have an answer.
Michael
Gaffney
Safety
Engineer
Safety
& Health Services Division
Brookhaven
National Laboratory
gaffney AT bnl.gov
(631)
344-7468
From:
Feder, Russell <rfeder AT bnl.gov>
Sent:
Friday, October 14, 2022 3:52 PM
To:
Gaffney, Michael <gaffney AT bnl.gov>
Cc:
Dany, Michael <mdany AT bnl.gov>
Subject:
Re: Magnet mapping installation and operation
work plan
Ok thank you
for reminding about the "don't get tangled in
the robot" hazard. That's a good catch. Do
you think we need to LOTO the compressor?
This may not be practical because we need to
connect air lines and see how things are
working when the robot is sitting out on that
extension shelf. People will need to be able
to work on the robot with air pressure to it.
We could lock out the compressor for when
people are in the bore if the robot gets stuck
inside there for some reason. Let me ask the
CERN guys what they have done at other
installations.
The Complex
LOTO scenario is a little confusing to me too,
and I think it's overkill to be honest. I
understand what Ray is going for but I really
think if we lock out the power supply and have
Mike Rau or Joel or another qualified person
just hold on to the lock, we will be in good
shape. We are really setting ourselves up for
a misstep and a violation because of the
number of people involved. On top of the
this, the pole tip doors have interlocked
limit switches. When the pole tip doors are
open, the magnet can't turn on. Ray doesn't
think this is sufficient for human safety,
just machine protection. I need someone
qualified to write this Complex LOTO procedure
which will clarify things.
sPHENIX
Chief Mechanical Engineer
From:
Gaffney, Michael <gaffney AT bnl.gov>
Sent:
Friday, October 14, 2022 3:23 PM
To:
Feder, Russell <rfeder AT bnl.gov>
Cc:
Dany, Michael <mdany AT bnl.gov>
Subject:
RE: Magnet mapping installation and operation work
plan
Under
Dosimetry/Monitoring:
TLDs
may be required.
Typically,
area ODH monitoring/alarm systems isn’t in
this section unless POMs are required. The
ODH alarm system is identified in the Safety
and security concerns. (however, cryogenic
may want to be checked if there is a leak,
staff may be exposed to the cryogen)
Prior
to energizing the magnet, a physical check
of all unsecure objects that could be
affected by a magnetic field (this would
include fasteners, tools, compressed gas
cylinders) are removed. I verified that the
air compressor tank is secure and should not
be an issue.
The
hazard of robot motion when staff in bore
needs to be address (including
entrapment/entanglement) and mitigation
documented (should be noted in the Safety
and Security Concerns section of the work
permit).
I do
not understand “operations lockout” style
lock. It needs to be verified that this is
the appropriate control level and not a
“Service and Maintenance” activity which is
covered by the LOTO subject area.
When
will someone 5G magnetic fields be taken?
The mapping station is a concern.
Michael Gaffney
Safety Engineer
Safety & Health
Services Division
Brookhaven National
Laboratory
gaffney AT bnl.gov
(631) 344-7468
From: Feder,
Russell <rfeder AT bnl.gov>
Sent:
Friday, October 14, 2022 2:29 PM
To:
Albanese, Marianna < malbanese AT bnl.gov>;
Dany, Michael <mdany AT bnl.gov>
Subject:
Re: Magnet mapping installation and
operation work plan
Attached is a revised version
of the magnet mapping installation and
operation work plan.
After a few discussions with
Ray Fliller and others we've added the
requirement for a Complete LOTO for
workers accessing the
sPHENIX bore
once the magnet power supply is
connected. I need to get a complex LOTO
procedure written by a qualified person
and I don't have that yet.
We want to start installing
mapper mechanical equipment in the bore
before the power supply is connected. I'd
like to get this green sheet work permit
approved with the understanding that we
will revise it once we get the complex
LOTO procedure in hand. We will also not
do this work in the bore if we don't have
the LOTO procedure (and trained and
briefed people) once the power supply is
connected. Can you
please help me get this distributed
and signed off? We want to start
installing this equipment next week
once we get the pole tip doors open.
The permit also covers other
hazards like ODH that are already present.
sPHENIX
Chief Mechanical Engineer
From: Feder,
Russell <rfeder AT bnl.gov>
Sent:
Thursday, September 29, 2022 6:34 PM
To:
Albanese, Marianna < malbanese AT bnl.gov>;
Mills, James A <mills AT bnl.gov>;
Gaffney, Michael <gaffney AT bnl.gov>;
Dany, Michael <mdany AT bnl.gov>;
Feder, Russell <rfeder AT bnl.gov>;
Haggerty, John <haggerty AT bnl.gov>;
Yip, Kin <kinyip AT bnl.gov>;
Toldo, Frank A <fatoldo AT bnl.gov>;
Pontieri, Chris <cpontieri AT bnl.gov>
Subject:
Magnet mapping installation and operation work
plan
Attached is a draft of the
magnet mapping work planning package and
the green sheet work permit. This link
is to the PowerPoint version.
2022SEPT29_MAGNET_MAPPING_Work_Plan_V1
There is a separate operating procedure
for the sPHENIX
magnet, managed by Kin Yip. I have to
update this work plan with that document
number reference once I get it tomorrow.
Please review and comment
and let me know if you have any
questions, concerns, edits, updates,
or things you want to talk about.
Go ahead and distribute
this to others as well for review.
We should work to get this
approved and signed off by 10/10.
sPHENIX
Chief Mechanical Engineer
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