YEYE++4 disks = 4 disks = 2 Nos. (12 2 Nos. (12 Sectors each)Sectors each)

Support Structures = Support Structures = 2Nos. 2Nos.

AISI 1045 steel bar = AISI 1045 steel bar = 1 1 No. No.

for checking dimension of 680 mm (0/-0.5)for checking dimension of 680 mm (0/-0.5)

Fasteners Fasteners = = 1 1 setset

(Min. required to allow a trial Assembly at HMC-(Min. required to allow a trial Assembly at HMC-

3)3)

YEYE++4 SHIELDING WALL 4 SHIELDING WALL FOR CMSFOR CMSSCOPE OF SCOPE OF WORKWORK

2

1.1. Plates/ Rods/ Bars:Plates/ Rods/ Bars:

Material ordered Material ordered = 10= 10thth Dec., 2010 Dec., 2010

Material shipped Material shipped = 21= 21stst March, 2011 March, 2011

Material received Material received = 29= 29thth April, 2011 to 6 April, 2011 to 6thth May, May, 20112011

2.2. Beam HEB-220 and Channel UPN-400 Beam HEB-220 and Channel UPN-400

Material ordered Material ordered = 29= 29thth June, 2011 June, 2011

Material Shipment Material Shipment = 11= 11thth Sept., 2011 Sept., 2011

Material received Material received = 22= 22ndnd Sept., 2011 Sept., 2011

3.3. 1 set of fasteners = July, 20111 set of fasteners = July, 2011

YEYE++4 SHIELDING WALL 4 SHIELDING WALL FOR CMSFOR CMSMATERIAL PURCHASEMATERIAL PURCHASE

3

Mill Test Certificates of standard ASTM A36 Material received from the supplier..

Test reports of material samples tested for Cobalt content (< 0.1%, as per requirement).

Material acceptance from CERN Material acceptance from CERN == 11stst June, June, 20112011

YEYE++4 SHIELDING WALL 4 SHIELDING WALL FOR CMSFOR CMS

MATERIAL TESTING AND MATERIAL TESTING AND ACCEPTANCEACCEPTANCE

4

Material testing completed and following Material testing completed and following certificates were submitted to CERN on 25certificates were submitted to CERN on 25thth May, May, 20112011

Documents submitted to CERN Documents submitted to CERN == 1212thth April, 2011 April, 2011

Final cutting Plan

Final weld Identification / details

Quality Plan

Production Technology

Quality Plan approved by CMSQuality Plan approved by CMS == 11stst June, 2011 June, 2011

YEYE++4 SHIELDING WALL 4 SHIELDING WALL FOR CMSFOR CMS

ENGINEERING REPORTENGINEERING REPORT

5

First Sector (+6/-2) being machined at HMC-3, Taxila (7th Sept., 2011)

Assembly of 1st Disk at HMC-3, Taxila on 25th Jan., 2012

Assembly of 1st set of Supporting Structure with Sectors on 1st / 2nd March, 2012

Load testing of 1st Disk on 14th / 15th Feb., 2012

Dispatch of 1st Disk on 27th March, 2012

• Final Assembly of 1st Disk (all 12 sectors) and its Load testing was carried out on 14th & 15th Feb., 2012. Detailed reports were submitted & accepted by CERN.

• All the 12 Nos. of Sectors with their beams and sectors of centering rings were dispatched to Karachi from HMC-3, Taxila on 27th March, 2012.

• Assembly of Supporting Structure with Sectors was completed and inspected on 1st & 2nd March, 2012. Detailed reports were submitted & accepted by CERN..

Manufacturing of Second (YE-4) Disk.

•Sector -1/+7, -2/+6 : Inspected on 19th & 20thApril, 2012. QA reports were submitted to CERN for acceptance.

•Sector -3/+5, -5/+3, -4/+4: Final Machining completed and are in the process of de-burring & cleaning.

• Sector -6/+2, -7/+1, -8/+12, -12/+8 : Fit-up and welding completed. Ready for Final machining.

•Sector -9/+11: Fit-up completed and Final welding in progress.

•Sector and -10/+10 : a) Welding of wings of Base plate and perforated plate completed. b) Drilling / cutting of holes for concrete in perforated plate in progress. c) Marking and fit-up & welding of bars on the Base plate completed• Sector -11/+9 : a) Welding of Base plate and perforated plate completed. b) Drilling / cutting of holes for concrete in perforated plate yet to start.

•Fabrication of Support Beam (Dwg # CMSSYEM0155) completed and ready for machining.

•Machining of Fixing support (Dwg # CMSSYEM0160) and Support left & right (Dwg # CMSSYEM0157 & Dwg # CMSSYEM0158) completed.

•Final Assembly of the 2nd Disk/ Supporting structure possible by end of June, 20

•CMS is requested to provide the visit schedule of Inspector to witness the load testing and for final Inspection of the 2nd Disk/ Supporting structure.

•SKILLED MANPOWER FROM HMC-3

•EXPECTED TIME OF ASSEMBLY AND INSTALLATION

•YE+4•YE-4

•ESTIMATED DURATION OF THE ACTIVITY

•NUMBER OF PERSONS REQUIRED

THANKTHANKSS

18