Updates on CENF SB WG CENF Project Meeting 19 th September 2013
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Transcript of Updates on CENF SB WG CENF Project Meeting 19 th September 2013
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Updates on CENF SB WGCENF Project Meeting 19th
September 2013
M. Calviani for the CENF SB WG team
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2 M. Calviani - CENF PTM 19th September 2013
Civil Engineering updates
19th September 2013
L. Faisandel, N. Baddams, S. Girod
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3 M. Calviani - CENF PTM 19th September 2013
Civil Engineering updates
19th September 2013
L. Faisandel, N. Baddams, S. GirodSpace added to fix backwards shielding leakage w/ Fe blocks
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4 M. Calviani - CENF PTM 19th September 2013
Civil Engineering design updates
19th September 2013
L. Faisandel, N. Baddams, S. Girod
Space reserved for Fe collar at the beginning of DP (thermal analysis pending)
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5 M. Calviani - CENF PTM 19th September 2013
Secondary Beam integration
19th September 2013L. F
aisa
ndel
, N. B
adda
ms,
S. G
irod
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6 M. Calviani - CENF PTM 19th September 2013
Secondary Beam integration
19th September 2013
S. Girod
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7 M. Calviani - CENF PTM 19th September 2013
Secondary Beam integration
19th September 2013
S. Girod
Inconsistencies between integration and CE will be removed at the next iteration
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8 M. Calviani - CENF PTM 19th September 2013
Transport and manipulation input
Updated layout and modifications of previous design Bigger overall height due to a larger span Festoon parallel to the railways containing all cables
19th September 2013
R. Rinaldesi, K. Kershaw
Main hoist Capacity: 40 ton Lifting height: 24 m Lifting speed: 5 m/min FEM classification: M4/A4 Reeving system: 4/2 (true vertical lift)
Auxiliary hoist: Capacity: 5 ton Lifting height: 26,1 m Lifting speeds: 1.6 m/min FEM classification: M4/A4 Reeving system: 4/2 (true vertical lift)
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9 M. Calviani - CENF PTM 19th September 2013
Transport and manipulation input
19th September 2013
R. Rinaldesi, K. Kershaw
40 ton 5 ton
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10 M. Calviani - CENF PTM 19th September 2013
Transport and manipulation input
19th September 2013
Fault analysis (link) Mechanical faults (hoist + cross and long travel)
Most risky is gearbox assembly – additional mitigation with heavy duty gearbox
Electrical faults Cubicles (power and control) outside radiation areas
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11 M. Calviani - CENF PTM 19th September 2013
Initial discussion on access system configuration
19th September 2013
F. Valentini
Material Door:Controlled
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12 M. Calviani - CENF PTM 19th September 2013 19th September 2013
F. Valentini
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13 M. Calviani - CENF PTM 19th September 2013 19th September 2013
F. Valentini
TO BE MODIFIED WITH NEW LAYOUT OF HS BUILDING
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14 M. Calviani - CENF PTM 19th September 2013
Next items for discussions: Confirmation of the role of the CV systems Confirmation of radiological classification of the different areas (RP) List of all CENF areas accessible by personnel Confirmation of the CENF sectorization
19th September 2013
F. Valentini
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15 M. Calviani - CENF PTM 19th September 2013
Update on He-vessel calculations
Preliminary evaluation on the He-vessel structural issues Assuming vacuum needed before refilling with He
Case studied: 100 mm thick – 250 ton 50 mm thick – 125 ton 50 mm thick – lateral stiffeners 50 mm clamped
Max total deformation 36 mm Max reaction force 1.2 MN Stress ~175 MPa, good safety factors with S235/S355 SSS
Other solutions under investigation (i.e. screw pushing the blocks)!
19th September 2013
A. Perillo-Marcone, M. Hora
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16 M. Calviani - CENF PTM 19th September 2013
T2K He-vessel clamping
19th September 2013
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17 M. Calviani - CENF PTM 19th September 2013
Updates on EL infrastructure
Preliminary layout of the EL infrastructure
19th September 2013
J. Devine
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18 M. Calviani - CENF PTM 19th September 2013 19th September 2013
J. D
evin
e
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19 M. Calviani - CENF PTM 19th September 2013 19th September 2013
18 kV stable loop
18 kV pulsed loop
3.3 kV secure loop
J. Devine, M. Dujardin
Redundant 18kV/400V transformers
UPS network
Safety 400V loadsNormal loads 400 V
UPS
Horn/reflector
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20 M. Calviani - CENF PTM 19th September 2013
Discussion on cooling and ventilation matters
19th September 2013
Design air-tightness parameter (until CE parameters will be available) 0.6 vol/h @50Pa
Morgue will be at a lower pressure with respect to target hall
In the next days a proposition on the pressure cascade will be discussed Flow estimation !
M. Battistin
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21 M. Calviani - CENF PTM 19th September 2013
Avoid recirculation in the underground areas (dry air) Recirculation in the target hall Dedicated extraction for the service pit will be foreseen Foresee a delay line in the underground extraction HTO condensation at the extraction or at stack?
19th September 2013
M. Battistin
Delay line/buffer tank
PRELIMINARY
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22 M. Calviani - CENF PTM 19th September 2013 19th September 2013
No recirculation
M. Battistin
PRELIMINARY
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23 M. Calviani - CENF PTM 19th September 2013
Discussion on cooling and ventilation matters
19th September 2013
M. Battistin
b. 893
Flow estimation will be clarified with an improved thermal load distribution ongoing
PRELIMINARY
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24 M. Calviani - CENF PTM 19th September 2013
Radioprotection updates
19th September 2013
C. Strabel, H. Vincke
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25 M. Calviani - CENF PTM 19th September 2013
Cumulated dose in reflector area
19th September 2013
C. Strabel, H. Vincke
~10 Gy/y at motors location (~1010 HEH/cm2/y) ~Gy/y in the service pit Expected <O(10) mGy/y in target hall
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26 M. Calviani - CENF PTM 19th September 2013
Cumulated dose in 1st pit area
~1-50 kGy/y at 1st muon pit
19th September 2013
C. Strabel, H. Vincke
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27 M. Calviani - CENF PTM 19th September 2013
Radioprotection and radionuclide emission
According to present calculations, 44 TBq/y would be released if extraction would be immediate; 30 TBq/y are due to 15O, with a t1/2 of 2 min;
If air could be released with a delay of 5 to 10 minutes, the effective dose to public will be minimal
Next: When ventilation flow will be know, the effect of
continuous release will be evaluated by HSE
19th September 2013
P. Vojtyla
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28 M. Calviani - CENF PTM 19th September 2013
Next steps
Next meeting to be organized during next week
URGENT and being followed-up: clarify ventilation flows, propose pressure cascade and sectorization Small document to be prepared?
Thermal loads evaluation in the installation
19th September 2013