Tomasz Ladzinski GS/ASE Credits to S. Di Luca, F. Havart, F. Schmitt & G. Godineau

LHC Access System:LS1 Modifications

Tomasz Ladzinski GS/ASE

Credits to S. Di Luca, F. Havart, F. Schmitt & G. Godineau

2

Overview of the Modifications

8 April 2014 T.Ladzinski GS/ASE - edms: 1371910

Task Name Where Description ECR

Sectorisation Changes

TI2Displacement of Door PPG2145 separating the LHC and the SPS in the TI2 tunnel

1253832

LHC1 Displacement of PADs from UJ14/16 to UL14/16 1218906

LHC4 Displacement of PAD UX451 1346280

USC55 Creation End-of-Zone Door for Material Transfer Between USC55 and the Bypass 1236542

Interlocking PM32 PM/TZ32 Creation of an Interlocked Service Zone PM32 1254796

Access Point Maintenance Doors

LHC LACS/LASS Top of the Pit Maintenance Doors 1317397

New Radiation Veto Sectors

LHC2,6,8Additional Radiation Vetoes in Access Locations Leading to the Injection Lines and Beam Dump Transfer Galleries

1254007

Monitoring of Helium Conf. Doors in LASS

TI2/TI8 Interlocking of Injection Tunnel Upstream Areas with LHC Powering 1257949

LHC Monitoring of pressure resistant doors in LASS 1288596Access – Powering Interlock

CCR, LHC Change of the Interlocking of Powering and Access systems 1246780

Monitoring of Doors Important for Control of Activated Air

US32/US76 Add the following ventilation doors to LASS: YCPV01=US32, YCPV01=US76

1288596UP53 Add the following ventilation door to LASS: YCPV01=UP53

LHC2,4,6,8 Monitor the ventilation doors between Service and Tunnel areas in even points

Point 7 Collimation LHC7 LHC Point-7 Collimator Region Enclosure and Ventilation Bypass 1303048

Upgrade of LASS IT Infrastructure

CCC/CCR Exchange of LASS servers and client computers, upgrade of Siemens PCS7

LACS CCC New tool for video, TIM views replace Evolynx LASS ones, upgrade from XP

https://edms.cern.ch/document/1253832/1

https://edms.cern.ch/document/1218906/1.0

https://edms.cern.ch/document/1346280

https://edms.cern.ch/document/1236542/1.0

https://edms.cern.ch/document/1254796/








T.Ladzinski GS/ASE - edms: 1371910 3

Access Control - MAD

• For the LS1, MAD remote monitoring functionality was requested

• In case of problems with the MAD, the operator can take control of the device, monitoring its interior

• Today used by the CSA guards in case of need

• Functionality requested by the PS operators as well

• Will be kept in the LHC for post LS1 operation, unless a formal request to suppress this feature is made

8 April 2014


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Minor Sectorisation Changes

8 April 2014

Point 1: Displacement of Tunnel access points from UJ14/16 to UL14/16 (R2E).Zones called UL14 & UL16

Point 5: Addition of a new end-of-zone door YCPZ01=USC55 between the USC55 cavern and the bypass to help transport voluminous material.

Emergency exit always possible through the PAD, CMS wished to be able to lock the door -> procedure (!)

Patrol procedures need to be updated to include the sectorisation changes!

TI2: Displacement of the inter-machine (LHC-SPS) door by 400 m. towards the LHC.


UX451 Sectorisation Change

8 April 2014

Move the PAD from its location at the frontier between the tunnel and UX451 to the frontier between the UX451 and US450 and fence-off a narrow passage in the UX451 (R2E).

Before LS1: After LS1:

Access Point remainscalled UX451


Interlocking PM32

8 April 2014

Before LS1

After LS1

• PM32 safe w.r.t. circulating beams, but:• TZ32 shall be made accessible from

PM32 for CLIC alignment studies• Risk of exposure to activated air

behind the ventilation door at the bottom of the shaft

• Access forbidden while superconductive magnets powered – need to homogenize the protection barriers


PM32 – Service Zone of Point 2

8 April 2014


Access Point Maintenance Doors• Availability problem:

• With more than a 1’000 passages per day during short Technical Stops, the access devices require lots of maintenance interventions

• Impossible to perform maintenance in Beam mode, as any intervention would dump the beam

• Almost impossible to perform maintenance in Access mode, as it disturbs access for other teams

• Solution:• Install additional doors behind the access points (just in front of the

elevators), not obstructing passage during normal access• While in Beam mode:

1. Close the maintenance door remotely 2. Transfer the LASS surveillance envelope to the new door3. Perform maintenance of the access point 4. Transfer the LASS surveillance envelope back to the access point5. Open the maintenance door remotely

• Only top of the pit to start with: PM15, PM25, PX24, PZ33, PM45, PZ45, PM56, PM65, PM76, PM85

8 April 2014


Access Point Maintenance Doors

8 April 2014

Procedure guiding the use of this door needed.In case of urgent access, while the PAD is under maintenance, it shall always be possible to open the maintenance door, but this will disarm the patrol. Having the access point back in operation needed to perform the patrol.


New Radiation Veto Sectors

• Installation of Radiation Veto set/reset key and RP Veto signalization panels next to the sector doors leading to:• TI2 transfer line• TI8 transfer line• TD62 beam dump transfer gallery• TD68 beam dump transfer gallery

• These Radiation Vetoes will apply automatically 30 minutes after passing to Beam mode.

• Reminder: manual setting of Radiation Veto propagates top-down (e.g. PM25 -> UJ23 ->

TI2), resetting does not propagate.

8 April 2014


Monitoring of Helium Confinement Doors

• Helium confinement doors were introduced following September 2008, monitored in LACS/TIM and used in the SIS powering interlock

• They are of different types:• Overpressure resistant doors• One way pressure release doors• Two way pressure release doors (saloon)

8 April 2014

• During LS1, the door monitoring was moved to LASS

• The doors in the ULs composed of multiple parts - some at the service tunnel level, some at the service gallery (higher) level - were split into two (by level)

YCPV02=UL26

YCPV01=UL26


Interlocking of Injection Tunnel TI2 Upstream Area with the LHC Powering

8 April 2014

Allow powering phase II in LHC sector 1-2 only if:1. The overpressure resistant door

PPG_TI2 closed2. SPS Sector 5 special patrol OK

• Two patrol boxes; next to PPG2145 and PPG_TI2

• Patrol lost after each access• Rearming possible with LHC Patrol

key at any time: first the inter-machine patrol box, then the box next to the PPG_TI2 door

• Patrol/Access procedure to the transfer line from SPS needed


Interlocking of Injection Tunnel TI8 Upstream Area with the LHC Powering

8 April 2014

Allow powering phase II in LHC sector 1-8 only if:1. The overpressure resistant doors

• Door PPV_TA40 Closed• Door PPV_TT41 Closed

2. ECX4 Safe and Closed (orange)3. TAG42 Safe and Closed (green)

Need for communication between the LHC and SPS operators.


Access – Powering Interlock

• The interlock matrix very similar to the one used so far (major change is the transfer lines)• Safety Improvements

• Overpressure doors monitored in LASS• LASS communicates directly to a PIC PLC

• HMI Improvements

8 April 2014

T.Ladzinski GS/ASE - edms: 1371910 168 April 2014




Monitoring of Doors Important for Control of Activated Air

Three RP relevant doors included in LASS:

• YCPV01=US76• YCPV01=US32• UCPV01=UP53

Ventilation doors between Service and Tunnel areas in the even points only monitored in LASS – dedicated viewNeed for operating procedure and/or inclusion in Big Sister or SIS Injection Interlock

8 April 2014


Point 7 Collimation Region Enclosure

8 April 2014

No Access / Beam ONDoors closed to have high speed flow of air through ducts passing the sections with the highest losses and, thus, reduce radioactive releases. Bypass ventilators on.

Before AccessDoors opened to remove radioactive air. Bypass ventilators off.

Doors shall open in case of an overpressure due to a major He-release.

No interlock with the access safety system, only monitoring and remote control.No automatic link with the fire detection & ventilation systems.Need for a detailed operating procedure (including malfunctioning scenarios)!


Point 7 Collimation Enclosure Doors

8 April 2014

Junction Box

Emergency Exit (Default door position: spring closed)

Push Buttons (Open/Close)

Solenoid valveElectromagnet 1 (Door Closed)

Electromagnet 2(Door Opened), w. Position Sensor

Position Sensors


Point 7 Collimation Region Enclosures

8 April 2014

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CCC Collimation Enclosure Door Control

8 April 2014 T.Ladzinski GS/ASE - edms: 1371910


Where do we stand and next steps• Software mostly developed, being tested and deployed; you can look at

the new LASS Human Machine Interfaces already today• Hardware changes ongoing(>50% completed)• Once everything is installed (early June) , the LASS will be put back into

nominal operation (today largely bypassed)

• Patrol and other relevant procedures should follow (BE/OP, BE DSO, RP, CMS, GS/ASE)

• Access-Powering Test Campaign (Tentative Schedule):• Friday 6 June LHC8-LHC1-TI8 conditions for powering of sector 8-1• Friday 13 June LHC6-LHC7-LHC8 conditions for powering of sectors 6-7 & 7-8 • Friday 20/27 June LHC1/1.8-LHC2-TI2 conditions for powering of sector 1-2• Friday 4 July LHC2-LHC3-LHC4 conditions for powering of sectors 2-3 & 3-4• Friday 25 July LHC4-LHC5-LHC6 conditions for powering of sectors 4-5 & 5-6

• Full DSO Tests: weekend 4-5 October

• Join us for the tests – the best occasion to see the changes in place!

8 April 2014

Documents

Tomasz Ladzinski GS/ASE Credits to S. Di Luca, F. Havart, F. Schmitt & G. Godineau