updates on cenf sb wg cenf project meeting 17 th october 2013
DESCRIPTION
Updates on CENF SB WG CENF Project Meeting 17 th October 2013. M. Calviani on behalf of the CENF SB WG team. Revision of B755 and B757. M. Herranz , N. Baddams. Stairwell enclosed to maintain a different ventilation path. - PowerPoint PPT PresentationTRANSCRIPT
Updates on CENF SB WGCENF Project Meeting 17th
October 2013
M. Calviani on behalf of the CENF SB WG team
2 Updates on CENF SB WG - M. Calviani for the SBWG team
Revision of B755 and B757
17th October 2013
M. Herranz, N. Baddams
3 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
Increased space to allow for lifting striplines feedthrough with crane
M. Herranz, N. Baddams
Stairwell enclosed to maintain a different ventilation path
Pit for rising systems
4 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
M. Herranz
Cut at the level of the service pit
5 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
Decrease concrete thickness in the top part, to compensate for the need of longer concrete beams
L. Faisandel
6 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
!Fixes problem with trench integration! L. Faisandel, S. Girod
7 Updates on CENF SB WG - M. Calviani for the SBWG team
CE status
Reaching an almost stable configuration with the presently available information After CV feedback on integration we might
proceed either to slightly revise it or not --- 2D & 3D synced
Need to revise implementation in EDMS Clarification of deadline for specification for
preliminary technical drawings needed! Naming of the various accessible underground
areas launched within GS (yesterday) Will be important to univocally associated naming
to different areas (for ventilation & safety assessment)
17th October 2013
8 Updates on CENF SB WG - M. Calviani for the SBWG team
Integration update
Discussions with K. Kershaw concerning the applicability of the ITER Remote Handling Code of Practice for perfect vertical movement Idea is to improve the handling of the initial
horn/reflector support structure Double layer of iron:
Facilitate reduction of streaming Waste zoning and dismantling will benefit (see link)
Two solutions under investigations: Closed box (see later) Open box (not analysed still in detail)
17th October 2013
9 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
S. Girod, K. Kershaw
1. Double block, 120 cm height, 80 cm width
2. “simpler” shape with respect to previous versions
Alignment and support rods
CLOSED BOX
10 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
S. Girod, K. KershawAlignment and support rods
Cooling pipes passage
11 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013K. Kershaw
OPEN BOX
12 Updates on CENF SB WG - M. Calviani for the SBWG team
Radioprotection update
17th October 2013C. Strabel, H. Vincke, K. Zabrzycki
13 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
C. Strabel, H. Vincke, K. Zabrzycki
14 Updates on CENF SB WG - M. Calviani for the SBWG team
As neutrons are limited, no sky shine effect is to be expected
17th October 2013
@40 m
C. S
trabel, H
. Vin
cke, K
. Zab
rzycki
15 Updates on CENF SB WG - M. Calviani for the SBWG team
Prompt ambient dose rate at CERN fence > 5 mSv/h
17th October 2013
Vertical average = ~20-50 mLongitudinal average up to 200 m
C. S
trabel, H
. Vin
cke, K
. Zab
rzycki
16 Updates on CENF SB WG - M. Calviani for the SBWG team
Target design update
Two solutions for target cooling under consideration 6 mm radius, 100 cm long, graphite PT2020, He-
cooled1. Beryllium single outer casing to prevent graphite
bending with He circulation in interstitial (preliminary results next page)
2. Beryllium double casing with external/internal flow (next in line)
17th October 2013
See A. Perillo-Marcone 3rd CENF SB (link)V. Venturi, A. Perillo-Marcone
17 Updates on CENF SB WG - M. Calviani for the SBWG team
17th October 2013
He cooling pressure @10 bar MaxT for graphite ~600 K Surface graphite T ~350-550 K DT He ~120 K Preliminary results promising
V. Venturi, A. Perillo-Marcone
18 Updates on CENF SB WG - M. Calviani for the SBWG team
Target design update on-going
work Solution 1:
Analyse dynamical stresses Check “stagnant” locations and improve target
shape Analyse downstream window heating Could be limited by high stresses with graphite and
high-T expanding towards the Be external vessel Solution 2:
“safer” solution Larger footprint of the overall target assembly – with
reduced distance if horn neck is kept fixed at 24 mm Both solutions to be presented/discussed in
detail at the next SB WG meeting 6th November17th October 2013
19 Updates on CENF SB WG - M. Calviani for the SBWG team
Ventilation systems upgrade
Volumes of the various areas are now available EN/CV will finalize ASAP the extraction flow rate ... Together with DGS/RP, this will allow DGS/SEE to
provide semi-final impact into environment Following EN/CV proposition at last SBWG
meeting (link), modification of the rising systems
EN/CV draughtsman started addressing dimensions/cotes in the CATIA model – results at the next SBWG meeting
17th October 2013
20 Updates on CENF SB WG - M. Calviani for the SBWG team
SB preliminary risks analysis
S. Hutchins launched the WG during last PTM (link) S. Hutchins and F. Valentini prepared a first APR
table, which will be further discussed at the SB WG and then at the safety WG according to Steve’s plans
17th October 2013
NB: important to name the areas in a common and agreed way – see CE points
S. Hutchins, F. Valentini
21 Updates on CENF SB WG - M. Calviani for the SBWG team
m detectors/Alignme
nt In the next 2 weeks we’ll start addressing
muon detectors Availability from UniGE to collaborate on Si-
detectors technology Need to address timing needs, installation
possibilities, granularity needed, etc. – collaboration with experiment(s)
Sensitivity on target/horn and reflector
alignment Will be analysed in the next to week
(Alfredo/Wioletta), to confirm the need for “mm-class” transversal movement
Will provide also indication on the required spacing between detectors in the two m pits
17th October 2013