|
Size: 783
Comment:
|
Size: 1701
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 3: | Line 3: |
| * Noise investigation about FFUs in the corner stations * Method 1. 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) list is,<<BR>> || 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 || |
* '''Noise investigation about FFUs in the corner stations by an operator''' 1. 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".<<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. || Area Name ||MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC || || Remained FFU/Total FFU ||2/16||2/12 ||2/12 ||4/16 ||4/20 ||4/20||4/20 ||4/16 ||4/16 ||4/16 || |
| Line 9: | Line 10: |
| 1.#2 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs. * Keep taking sensitivity of FPMI condition by an operator. |
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. |
| Line 12: | Line 14: |
| * Check the difference btw FFU operation and alnost-no operation. | * Take the sensitivity again before alignment will change. * Check the difference btw FFU operation and almost no FFU operation. <<BR>> * 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
MCE
IFI
PRM
PR3
PR2
BS
SR2
SR3
SRM
OMC
Remained FFU/Total FFU
2/16
2/12
2/12
4/16
4/20
4/20
4/20
4/16
4/16
4/16
- Preparation
- 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.