Virgo Logbook

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AdV-SIN (Installation)

Menzione, Vacuum - 12:25 Tuesday 23 February 2021 (50868)

pipe SQB2-FC_input completion and test

This morning we connected the last ~ 2 m long component (pic.1) of the vacuum pipe SQB2-input_FC microtower and then started the evacuation.
This is the pipe section extending from SQB2 (included) up to the gate valve (pic1+pic2+pic3).
In the next few days we will test the tightness of the pipe joints.

Images attached to this report

Comments to this report:

Vacuum - 19:53 Monday 01 March 2021 (50930)

During the past week we completed the He-test of the flanged joints of the pipe in question (2 joints have been closed with viton, to facilitate the future baffle insertion operations).

The test is passed = no leaks were found (LR <1E-7 mbar.l/s).

We leave the chambers under pumping as long as possible, the residual pressure has reached a level close to 1E-6 mbar.