TRT Leak Repair

Anatoli Romaniouk, 22.05.2013 1

EC leak tests

Side C

Side A

2

Location of the pipes with leaks

А6 PPF1 connectorА4 Bracket

А2 Detectorside

А1 PPF1 connector

B3 Bracket

EC Side C

3

B5 Bracket

А3 Bracket

A2 OUTF 28

2099 mmCh. 2

Leak 0.3 l/h

A3 OUTF 26

1963 mmCh. 3

Leak 0.3 l/h

A4 OUTF 24

1814 mmCh. 4Leak huge

A6 OUTF 20

1526 mmCh. 6Leak huge

A1 OUTF 1

2388 mmCh. 1Leak 17l/h

B5 OUTF 9

910 mmCh. 11

Leak 0.3l/h

B3 OUTF 13

1155 mmCh. 9

Leak 2 l/h

EC Side C: Endoscope studyPipes were cut and were studied with endoscope from inside

4

A1 crack along the pipe (PPF1 connector)

5

A4 PPF1 bracket.

Detector connector

7

This pipe should be repaired

To go inside we need to open

some accesses

Repair should be done also here

(PPF1 area)

8

9

Example how pipes installed on the calorimeter flange

10

EC wheel type A connectivity

Electronics

Gas manifold

Gas

Straws/radiator

Electronics

Gas manifold

Gas

Straws/radiator

Gas IN

Gas OUTPEEK pipes shown in pink

Places of stress

EC: on detector connection

12

PEEK pipe termination

Most probable location of leaks

Repair at the detector level

NutPEEK pipe

Most probable places of leaks

Insert

Steel pipe

Polyurethane joint

Connector

Removable steel road

14

Example how pipes installed on the calorimeter flange

15

Repair status

TRT Wheel Repair and tests CommentsA1

A2 Done, OK Leak fixed

A3 Done, OK Leak fixed

A4 Done, failed Large, Repair is OK but leak in the other place

A5 Done, OK No leak before

A6 Done, partially failed Leak reduced but still large. Repair is OK but there is still leak in the other place

B1 Done, OK No leak before

B2 Done OK No leak before

B3 Done, failed Leak still at the level of 2.5 l/h (can be controlled)

B4 Done OK Leak was small, now no remarkable leak

B5 Done, failed Leak still at the level of 0.25 l/h (can be controlled)

B6

B7

B8

16

Next steps:

•Today - try to go outside of the tube ( A4 and A6) and see what can be done at the place of connection.

•End of the week - Close C side (if no additional repair can be made) and start working with side A.

•When side A will be available to start preparatory work?