Proposal Upgrade 30082012 sebastienrousseecernch stephaneberrycernch Summuary 1 Historic of this reflection 2 Proposal Upgrade 3 Proposal planication History ID: 494875
Download Presentation The PPT/PDF document "SSD/SDD" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
SSD/SDD Proposal Upgrade
30/08/2012
sebastien.roussee@cern.ch / stephane.berry@cern.ch
Summuary
1-
Historic
of
this
reflection
2-
Proposal
Upgrade
3-
Proposal
planicationSlide2
History
of events & Alarm on SSD/SDD Cooling
system
Since 2009, we recorded 40 interventions (E-log) on
this
cooling station.21 (52%) due to some operations without Alarm (yearly maintenance, replacement of filter etc etc)19 (48%) due to anomaly & Alarms.Details of these 19 events: 6 (31%) due to «loops faillure» Heaters / temperature sensors etc etc5 (27%) due to «Pressure Regulators failure» All events on them (break, leak pipping etc) 4 (21%) due to «Main Power supply» All Power cut.4 (21%) due to «Cooling plant» Pump, Leaks, Control valve etc etc.
We
could concluded that average 1/3 of the anomalys come from the regulation of the loops.
sebastien.roussee@cern.ch / stephane.berry@cern.chSlide3
Following last
graphic, we can
aslo watch that
¼ of the anomalys come for one part, the power supply. So it was
investigated
to installed a UPS.Actually the power consumption of the plant is arround 32Kw used like that:6Kw (20%) used for the PLC, vacuum pump, liquid pump26Kw (80%) used for all the heaters to control loop’s temperatures Power Consumption on SSD/SDD Cooling systemDuring this investigation, we had reply that there
is not enough power actually on UPS at point 2. Protected
whole the station on UPS is impossible.sebastien.roussee@cern.ch / stephane.berry@cern.chPower consumptionSlide4
Proposal
upgrade
Knowledge this
problem, Ton asked us the possibility to work
properly
without heaters.The idea is to modify the primary circuit, switch on the mixed water, changed the temperature control valves on this circuit and remove all heaters.The effects will be to, in same time:Rediuce the electrical consumption of the plant, so maybe put it on UPS.Reduice the risk of electrical failure (removed heaters etc etc..).Simplify the start-up procedure.Keep a fin tuning of the control of the temperature using mixed water Following this
suggestion, we investigated on it….
sebastien.roussee@cern.ch / stephane.berry@cern.chSlide5
Check of the control
temperature
on the mixed water
We
already
have Some other cooling plant using mixed water on the primary circuit. TPC Cooling plant & HMPID Cooling plant used it. We can see that the regulation on mixed water working properly, like this one of SDD who using chilled water.We also asked our CV colleagues, it seems that it will be enough disponibility on the mixed water circuit to add another cooling
.HMPID
TPC FEECSDDsebastien.roussee@cern.ch / stephane.berry@cern.chSlide6
Removing
control temperature on each loops
After
moving the plant on mixed water, we could
remove
all heaters, temperatures sensors on each loops...Keeping the both temperature control valve (one for SDD, one for SSD), it will be possible to set different temperature between this two système.XXX 48 loops
This modification will reduce the power consumption, without
these parts, whole the station could be on UPS.
Relay
X
48
loops
sebastien.roussee@cern.ch / stephane.berry@cern.chSlide7
sebastien.roussee@cern.ch / stephane.berry@cern.chSlide8
Actually, 317 I/O are
used for whole the plant.After
this upgrade, only 214
will stay on it.
Simplication
of the control cabinet
We will reduce the number of I/O of 32.5%, so reduce the risk of alarms coming from it too.Finally we just saw that the Tons’ idea is completly feasible, and it
confirms all the effects that
we want. sebastien.roussee@cern.ch / stephane.berry@cern.chSlide9
Proposal
Planification
It’s impossible to start
this upgrade before LS1, we have to buy
new control valves,
modify
piping of the mixed water from chilled water. The time during a technical stop is too short. We can propose to proceed in two step: First Step beginning of LS1: Modify primary circuit (control valves, piping etc etc) implement a new update of the programme who not use the heaters. Test like that during some weeks / month.(this test is to verify the new régulation of the temperature
control vale on the mixed water. All the rest of
componant will be still connect on the control cabinet but not working, the risk
of I/O
alarms
from
them
will
be
still
possible)
Second
Step
:
After
first test,
decide
to
remove
all the
rest
of
componant
.
(
heaters
,
temperatures
sensors
, Relay cabinet
etc
etc
)
Migration to UPS network.
sebastien.roussee@cern.ch / stephane.berry@cern.ch