CERN ATOMTEX BDKG-24 Скачать руководство пользователя страница 52

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REFERENCE

EDMS NO.

REV.

VALIDITY

TOF-TAR-PRD-0001

1867100

1.0

RELEASED

Page 52 of 93

Name of task

355. Install the solid

version of shielding
block 1

Exposed people

Local dose rate

70 µSv/hr

Workforce

3 people

Time needed

1 hour

Calculated dose

Responsible

EN-EA

Involved

EN-EA/EN-STI/ EN-CV/ HSE-RP

Comments:
This task will be performed from the Technical
Gallery.

A solid version of the shielding block 1 exists (with no
hole in the middle). The original shielding block 1 will
be exchanged by the solid one, in order to:
-

Provide a base to work from, for the next tasks.

Protect from the radiation from the target.

Содержание ATOMTEX BDKG-24

Страница 1: ...s in the vertical beam pipe to gain access to the n_TOF target 2 from the technical gallery It is assumed the detectors and the associated equipment have been removed before this work starts This docu...

Страница 2: ...added to give a better overview More photos and dimensions were added to give clarification for certain operations The dump removal process was also added between 80 90 Estimations for time and hands...

Страница 3: ...assembly 20 140 Remove cover lead vacuum valve transition flange Al vacuum chamber 21 150 Remove borated polyethylene elements and B4C 22 160 Remove collimator 2 23 170 Remove steel balls 24 180 Remo...

Страница 4: ...Remove solid version of round shielding block 1 59 430 Remove centring plate 60 440 Raise target to technical gallery whilst pipes are cut 61 450 RP measurements of the target 63 460 Remove the targe...

Страница 5: ...assembly removal extraction and cutting 85 650 Technical gallery cleaning 86 660 Remove dump core insert 87 670 Remove Cap around outer beam dump 88 680 Remove outer dump blocks 89 690 Remove inner b...

Страница 6: ...cedure document EDMS 1302710 The first version of the document illustrated the tasks without specifying how they will be carried out however the format of the document was designed to allow more infor...

Страница 7: ...hat the new target 3 can be installed In the figure below it can be seen that the area can be split into two sections above the technical gallery and below It is assumed that the detectors have been r...

Страница 8: ...volved EN STI EN HE EN CV EN SMM HSE RP Comments Radiation Protection prep survey Cleaning and plastic floor foil Installing fenced area in ISR Simple Controlled Radiation Area Create storage area in...

Страница 9: ...D Page 9 of 93 Name of task 20 Break vacuum Exposed people Local dose rate 0 1 Sv hr Workforce 1 person Time needed 1h Calculated dose Responsible EN EA Involved EN EA HE RP TE VSC Comments The valves...

Страница 10: ...k 30 Disconnect filter box and permanent magnet vacuum tubes Exposed people Local dose rate 0 5 Sv hr Workforce 2 people Time needed 2h Calculated dose Responsible EN EA Involved EN EA TE VSC Comments...

Страница 11: ...Name of task 40 Remove magnet Exposed people Local dose rate 0 5 Sv hr Workforce 5 people Time needed 1 5 day Calculated dose Responsible EN EA Involved TE MSC EN HE EN EA Comments To be stored in th...

Страница 12: ...67100 1 0 RELEASED Page 12 of 93 Name of task 50 Remove filter box Exposed people Local dose rate 0 5 Sv hr Workforce 4 people Time needed 0 5 days Calculated dose Responsible EN EA Involved EN HE EN...

Страница 13: ...Fit cover plate to vacuum chamber 1 Exposed people Local dose rate 0 5 Sv hr Workforce 2 people Time needed 15 minutes Calculated dose Responsible EN EA Involved EN EA Comments JL Grenard EN HE sugges...

Страница 14: ...ve rails and aluminium ventilation sealing plate Exposed people Local dose rate 1 Sv hr Workforce 2 people Time needed 2h Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments All the...

Страница 15: ...oncrete shielding bricks Exposed people Local dose rate 5 Sv hr Workforce 3 people Time needed 2 days Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments 40x20x10cm 320 blocks 3 peo...

Страница 16: ...al dose rate 10 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments The upper bellow needs to be removed to allow a flat plate to be plac...

Страница 17: ...er pit Exposed people Local dose rate 10 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments This cover will needed to support vehicles l...

Страница 18: ...Page 18 of 93 Name of task 110 Remove connecting pipe Exposed people Local dose rate 0 1 Sv hr Workforce 3 people Time needed 0 5 days Calculated dose Responsible EN EA Involved EN EA EN HE Comments...

Страница 19: ...vacuum chamber upper parts Exposed people Local dose rate 0 1 Sv hr Workforce 3 people Time needed 0 5 days Calculated dose Responsible EN STI Involved EN STI EN HE HSE RP Comments Cherry picker and 2...

Страница 20: ...l dose rate 0 1 Sv hr Workforce 3 people Time needed 0 5 days Calculated dose Responsible EN STI Involved EN STI EN HE HSE RP Comments The detector itself will have been removed before by those runnin...

Страница 21: ...93 Name of task 140 Remove cover lead vacuum valve transition flange Al vacuum chamber Exposed people Local dose rate 0 1 Sv hr Workforce 3 people Time needed 0 5 days Calculated dose Responsible EN...

Страница 22: ...cal dose rate 0 1 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN STI Involved EN STI EN HE HSE RP Comments Shouldn t be radioactive 1m long section of B4C in two parts also...

Страница 23: ...RP Comments Collimator2 is 2m long steel Partially radioactive small levels There is a process for swapping collimators so this could be consulted Pink hooks as seen in the picture must be screwed in...

Страница 24: ...s connected to one of the 2 inch valves in the sphere retaining plate is used The hose is stored in the target service gallery The spheres are collected in a 1m3 bag on the floor of the service galler...

Страница 25: ...acuum chamber big vessel a big plastic film has to be positioned below the beam pit as steel spheres may stay in the pit on the flat surfaces Bag below pit in technical gallery The vessel and vacuum c...

Страница 26: ...3 Name of task 190 Remove the flange support and the sliding pads Exposed people Local dose rate 0 1 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN STI...

Страница 27: ...R2_0211 Outer diameter 780mm Inner diameter 476mm Mass 1100kg An estimated 4 meters into the beam pit Someone will have to climb into pit to attach the lifting points This person should also ensure th...

Страница 28: ...ible EN EA Involved EN EA EN HE HSE RP Comments Installed from below Will be working in the gallery Silicone mastic sealant will have to be removed weakened before the ring can be lifted out Load cell...

Страница 29: ...a for Target 2 removal items below the gallery Exposed people Local dose rate Workforce Time needed Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments Checking Cleaning Nothing rem...

Страница 30: ...Page 30 of 93 Name of task 230 Remove supporting cover over pit Exposed people Local dose rate 10 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HS...

Страница 31: ...HE HSE RP Comments Radiation levels to be determined by RP see next page As the collimator will be activated 300 Sv at the bottom it can be lifted by Bonfanti crane in EAR2 Monorail is not installed a...

Страница 32: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 32 of 93 Dose rates 1 Sv hr Dose rates just above the bottom 100 Sv hr 10 cm Dose rates at the bottom 200 Sv hr 10 cm...

Страница 33: ...er long vacuum chamber Exposed people Local dose rate 10 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments There is a short vacuum cham...

Страница 34: ...Exposed people Local dose rate 10 Sv hr Workforce Time needed Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments A cover needs to be installed over the vacuum chamber to stop thin...

Страница 35: ...kforce 4 people Time needed 2 hours Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments Installed with monorail But monorail won t be available at this point Some concrete blocks co...

Страница 36: ...mm If flange is cut tube will fit through concrete ring and its support but will need new fixing points to hoist Vacuum tube length is 8898 58mm Lowest 1m will be activated hot This will be stored in...

Страница 37: ...ITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 37 of 93 Dose rates 2 mSv hr 10 cm Dose rates 1 Sv hr First cut chamber vertically in the pit Second cut chamber vertically in the pit Third cut chamber...

Страница 38: ...l dose rate 1 Sv hr Workforce 4 people Time needed 0 5 day for installation 2 hours for load test Calculated dose Responsible EN HE Involved EN HE HSE Comments This must be done after the vacuum chamb...

Страница 39: ...D 0001 1867100 1 0 RELEASED Page 39 of 93 Name of task 280 Load test monorail track Exposed people Local dose rate 1 Sv hr Workforce 4 people Time needed 2 hours Calculated dose Responsible EN HE Invo...

Страница 40: ...ame of task 290 Remove supporting cover over pit Exposed people Local dose rate 10 Sv hr Workforce 3 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments Th...

Страница 41: ...f task 300 Remove support frame for vacuum chamber 1 Exposed people Local dose rate 10 Sv hr Workforce 2 people Time needed 30 min Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comment...

Страница 42: ...l dose rate 10 Sv hr Workforce 3 people Time needed 4 hours Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments These need to be removed using the monorail There are 4 blocks These...

Страница 43: ...move support for square shielding Exposed people Local dose rate 10 Sv hr Workforce 2 people Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN HE HSE RP Comments Lifting spreader...

Страница 44: ...be done in the cooling station away from the target Water needs to be sucked pumped out at different heights to remove as much water as possible Planned Procedure 1 Pressurise circuit and push water o...

Страница 45: ...g on the level of contamination It will be stored in ISR8 Storage Area To be removed through Technical Gallery trap door to allow entirety to be done with remote handling Telescopic forklift needed to...

Страница 46: ...rkforce 2 people Time needed 0 5 days Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP Comments This task will be performed from the Technical Gallery A solid version of the shielding bl...

Страница 47: ...me needed 1 day Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP Comments This step needs to be done if the water level is above the pipe connection roughly around the position of shield...

Страница 48: ...e 48 of 93 Name of task 336 Remove solid version of shielding block 4 Exposed people 0 Local dose rate Workforce 2 people Time needed 0 5 days Calculated dose Responsible EN STI Involved EN EA EN HE H...

Страница 49: ...ped depending on the level of contamination They will be stored in ISR8 Storage Area To be removed through Technical Gallery trap door to allow entirety to be done with remote handling Telescopic fork...

Страница 50: ...the Technical Gallery A solid version of the shielding block 1 exists with no hole in the middle The original shielding block 1 will be exchanged by the solid one in order to Provide a base to work f...

Страница 51: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 51 of 93 Dose rates 1 uSv h Dose rates 500 uSv h...

Страница 52: ...eople Time needed 1 hour Calculated dose Responsible EN EA Involved EN EA EN STI EN CV HSE RP Comments This task will be performed from the Technical Gallery A solid version of the shielding block 1 e...

Страница 53: ...erson will be working there He will be supported by 1 or 2 people in the Technical Gallery The dose rate in this area does not include the possible contamination inside the pipes This contamination ma...

Страница 54: ...e rate 100 Sv hr Workforce 3 people 1 down 1 or 2 in Tech Gallery Time needed 5 min Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments A manual winch will be needed to recov...

Страница 55: ...r 2 in Tech Gallery Time needed 10 min Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments Pipes should be closed with plastic bags The plates will be stored in the ISR8 Stor...

Страница 56: ...in Tech Gallery Time needed 10 min Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments Pipes need to leave clear space for target lifting The flexible pipes will be tied to...

Страница 57: ...t been dropped low enough in previous stages A manual winch will be needed to recover persons in the case of an emergency The intervention inside the pit will be confined space work so all the necessa...

Страница 58: ...esponsible EN STI Involved EN EA EN HE HSE RP EN CV Comments Everything should be checked before moving on from this stage as afterwards the target will be exposed HSE RP suggests that since this is a...

Страница 59: ...task 420 Remove solid version of round shielding block 1 Exposed people 0 Local dose rate 70 Sv hr Workforce 2 people Time needed 2 hours Calculated dose Responsible EN STI Involved EN EA EN HE HSE R...

Страница 60: ...Calculated dose 0 Responsible EN STI Involved EN STI EN HE HSE RP Comments This was not secured when it was installed This needs to be done before the target can be removed as it blocks access to the...

Страница 61: ...places The first cut will be made 80 cm 20 cm from the top of the pipes The second cut will be made as close as possible to the top of the target The advantage of this is that in both fragments of cu...

Страница 62: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 62 of 93...

Страница 63: ...Sv hr Workforce Time needed Calculated dose Responsible HSE RP Involved EN EA EN HE EN SMM Comments Once the pipes are cut and while the target is hanging from the monorail RP will perform measurement...

Страница 64: ...be moved along the Technical Gallery and lowered through the trapdoor The area below the trapdoor will be prepared for draining It will be covered in plastic sheets A draining tray measuring 1500x1500...

Страница 65: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 65 of 93...

Страница 66: ...open The valve to the cooling water container will be closed This can be done by hand before the target arrives The water container will be connected by a flexible hose to the draining tray The locati...

Страница 67: ...ll the Bonbonne 50 l described in EDMS 1723932 SCEM 55 50 40 610 0 3 holes need to be performed to fully drain the cooling circuit The first hole is a continuation of the hole that was made in task 50...

Страница 68: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 68 of 93...

Страница 69: ...te 2000 Sv hr Workforce Time needed Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP Comments This is to be done by the monorail hoist in the technical gallery using remote handling The...

Страница 70: ...ay spacer blocks will be removed from under the trapdoor A shielding box resting on a trolley will be placed under the trapdoor The shielding box will be designed by EN STI It will need to provide suf...

Страница 71: ...eded Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP Comments This will be done by electric tractor and tow bar 3m The target needs to be pulled out of the radiation protection area cag...

Страница 72: ...PSI container Exposed people Local dose rate 2000 Sv hr Workforce Time needed Calculated dose Responsible EN STI Involved EN HE HSE RP Comments This is to be done with the ISR crane The target will be...

Страница 73: ...REFERENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 73 of 93...

Страница 74: ...needed Calculated dose Responsible EN HE Involved EN EA EN HE HSE RP Comments The PSI container can then be transported in the RP RW premises ISR6 and stored safely with concrete blocks waiting to be...

Страница 75: ...eparate the pipes The sharp edges of the pipes need to be covered with tape Then the pipes need to be placed inside two bags double layer of protection A procedure for this will be developed either wi...

Страница 76: ...al dose rate 70 Sv hr Workforce Time needed Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP Comments This will be done in order to remove the vertical cooling pipes from the pit It will...

Страница 77: ...cult to predict the dose rate in this area due to the contamination the may exist in the interior of the pipes Experimental measurements will take place once there is access to this area The disconnec...

Страница 78: ...ime needed 10 min Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments Remove the bindings that were installed in Task 390 to keep the flexible sections out of the way A manua...

Страница 79: ...TI Involved EN EA EN HE HSE RP EN CV Comments Tasks 580 600 will be repeated 2 times one for each pair of moderating cooling water pipes The reason for this is that the moderating and cooling water pi...

Страница 80: ...ency The intervention inside the pit will be confined space work so all the necessary safety measures should be taken For each support there are two alternatives Disconnect in this task the pipe from...

Страница 81: ...dose rate Workforce Time needed 10 min Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments The pipes could go out in one piece it the monorail drags them along the Tech Galle...

Страница 82: ...e cut the size is undefined at this point Their activation will be measured by HSE RP However in case they need to be cut the proposed procedure will be Both ends will be sealed in the Technical Galle...

Страница 83: ...l dose rate Workforce Time needed Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments The pipes connecting the cooling station to the pit form one assembly There are two circ...

Страница 84: ...Calculated dose Responsible EN STI Involved EN EA EN HE HSE RP EN CV Comments Similar to the previous task Remove the silicone and remove the fasteners that fix the circular plate to the wall A manua...

Страница 85: ...ll going from the cooling stations to the pit The assembly will be extracted using a manual hoist to start with Once it s been extracted a bit it will be attached to the main overhead crane This is wa...

Страница 86: ...TOF TAR PRD 0001 1867100 1 0 RELEASED Page 86 of 93 Name of task 650 Technical gallery cleaning Exposed people Local dose rate 10 Sv hr Workforce Time needed Calculated dose Responsible EN EA Involve...

Страница 87: ...nsert Exposed people Local dose rate 0 1 Sv hr Workforce 2 people Time needed 4 hours Calculated dose Responsible EN EA Involved EN STI EN EA EN HE HSE RP Comments Installed by hand using cherry picke...

Страница 88: ...screws The cherry picker will be needed THIS SHOULD BE DONE IN THE SUMMER TO AVOID WINTER WEATHER The sole purpose of tasks 580 620 is to open the roof access so that the new long vacuum chamber 9 me...

Страница 89: ...ith mobile crane Very outer blocks are concrete Underneath blocks are steel Drawing TOFEAR2_0099 Concrete blocks can go in carpark outer steel blocks should be able to depending on dose rate Outer con...

Страница 90: ...esponsible EN EA Involved EN EA EN HE Comments Installed by crane Inner steel blocks probably will be activated A cherry picker will be needed A mobile crane will be needed These can go into ISR8 Stor...

Страница 91: ...een placed around the ring before the remaining gap was filled with concrete This should allow the ring to be removed The orientation of the concrete ring has to be marked before disassembling this pa...

Страница 92: ...crane outside the building and fixed on the ceiling with 8 x Hilti M20x170 30 The plate can support 650kg A cherry picker will be needed A mobile crane will be needed This this be reused it can be sto...

Страница 93: ...ENCE EDMS NO REV VALIDITY TOF TAR PRD 0001 1867100 1 0 RELEASED Page 93 of 93 4 List of Annexes 4 1 n_TOF EAR2 Beam Line Installation Procedure EDMS 1302710 4 2 nTOF Target 2 removal Schedule EDMS 206...

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