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| * Noise investigation about FFUs in the corner stations by an operator. | * '''Noise investigation about FFUs in the corner stations by an operator''' |
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| *Make marks on FFU switches that are not turned off in MCE, IFI, PRM, PR3, PR2, BS, SR2, SR3, SRM, OMC with "Pink Tape".<<BR>> (Operated FFU / Total FFU) table list is below.<<BR>>130 FFUs will be turned off. This corresponds to 26kW heating power.<<BR>>26kW corresponds to about two water cooler cooling power (2 x 14kW). | *Make marks on FFU switches that are not turned off in MCE, IFI, PRM, PR3, PR2, BS, SR2, SR3, SRM, OMC with "Pink Tape".<<BR>> (Operated FFU / Total FFU) table list is below.<<BR>>130 FFUs will be turned off. This corresponds to 26kW heating power.<<BR>>26kW corresponds to about two water cooler cooling power (2 x 14kW). We expect balance. |
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| || Area Name ||MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC || || Operation/Total ||2/16||2/12 ||2/12 ||4/16 ||4/20 ||4/20||4/20 ||4/16 ||4/16 ||4/16 || |
|| Area Name ||MCF || MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC || || Present (151)/Total(180) ||1/16 || 2/16||12/12 || 12/12 || 16/16 ||20/20 ||20/20||20/20 ||16/16 ||16/16 ||16/16 || several FFUs are disorder || || Remained in Test(35)/Total(180) ||1/16 || 2/16||2/12 ||2/12 ||4/16 ||4/20 ||4/20||4/20 ||4/16 ||4/16 ||4/16 || <<BR>> |
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| * Method(1) * Take a sensitivity by an operator. * 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs. * Turn off almost FFUs at the same time by 4 people, except for pink one. * Take the sensitivity again before alignment will change. * Check the difference btw FFU operation and almost no FFU operation. |
|| IEXYV || IEXYA || IEXYC(1F) || IEXYC(2F) || || Present(2)/Total(10) || Present(2)/Total(10) || Present(2)/Total(10) || Present(4)/Total(14) || <--- KOACH are not included || <<BR>> |
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| || Corner Station (1F) || || 180+2x24+ 2x10 = 248 || |
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| 1.#2 Method(1) * Take a sensitivity by an operator. * 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs. * Turn off almost FFUs at the same time by 4 people, except for pink one. * Take the sensitivity again before alignment will change. * Check the difference btw FFU operation and almost no FFU operation. <<BR>> |
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| 1.#3 Method(2) | * Method(2): If the alignment change is too huge for us to take a sensitivity. * We turn off IYC-C and BS-C coolers at the same time when we turn off 130 FFUs. * Take sensitivity uegently if possible. * Check the temp changes in the corner station. * If the temp seems to go down rapidly, we enlarge heating power. If the temp gose up rapidly, we turned on IYC-C again and heat up by heaters. * we expect do some try and error for several hours if we encounter serious temp change. * If alignment comes back, take sensitivity. * If it will take too much time to recover FPMI, we give up this trial. |
Plans for trial just after ER
Noise investigation about FFUs in the corner stations by an operator
- Preparation
Make marks on FFU switches that are not turned off in MCE, IFI, PRM, PR3, PR2, BS, SR2, SR3, SRM, OMC with "Pink Tape".
(Operated FFU / Total FFU) table list is below.
130 FFUs will be turned off. This corresponds to 26kW heating power.
26kW corresponds to about two water cooler cooling power (2 x 14kW). We expect balance.
Area Name
MCF
MCE
IFI
PRM
PR3
PR2
BS
SR2
SR3
SRM
OMC
Present (151)/Total(180)
1/16
2/16
12/12
12/12
16/16
20/20
20/20
20/20
16/16
16/16
16/16
several FFUs are disorder
Remained in Test(35)/Total(180)
1/16
2/16
2/12
2/12
4/16
4/20
4/20
4/20
4/16
4/16
4/16
- Preparation
IEXYV
IEXYA
IEXYC(1F)
IEXYC(2F)
Present(2)/Total(10)
Present(2)/Total(10)
Present(2)/Total(10)
Present(4)/Total(14)
<--- KOACH are not included
Corner Station (1F)
180+2x24+ 2x10 = 248
- Method(1)
- Take a sensitivity by an operator.
- 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs.
- Turn off almost FFUs at the same time by 4 people, except for pink one.
- Take the sensitivity again before alignment will change.
Check the difference btw FFU operation and almost no FFU operation.
- Method(2): If the alignment change is too huge for us to take a sensitivity.
- We turn off IYC-C and BS-C coolers at the same time when we turn off 130 FFUs.
- Take sensitivity uegently if possible.
- Check the temp changes in the corner station.
- If the temp seems to go down rapidly, we enlarge heating power. If the temp gose up rapidly, we turned on IYC-C again and heat up by heaters.
- we expect do some try and error for several hours if we encounter serious temp change.
- If alignment comes back, take sensitivity.
- If it will take too much time to recover FPMI, we give up this trial.
- Method(1)