\chapter{Super-module Tests and Setup at Point 2}

\section{Preparation before receiving Super-module}

Before receiving super-module to the clean room for the tests,
the following things should be certified at least 1 week before super-module arrival
to avoid spending time for testing of anything but not super-module.

\begin{description}

\item[Gas tightness of pressure sensor box and bubbler box]
   It is important that those are tested before super-module arrival
   because if those have leak, the fixing and testing takes many days.
   Quick over-pressure tests and under-pressure tests including measurement devices
   such as Orbisphere and so on are necessary.

\item[Preparation of emergency drain valve for the cooling]
   The drain valve attached in the C-side of the super-module should be certified
   for the function of over-pressure tests.
   The certification is done by CERN howver leak tightness for under-pressure
   is not tested.
   That should be done by TRD crew before super-module arrival.
   Connecting to the cooling system, give under-pressure, and put water,
   in the connection pipe should tell whether it is leak tight or not
   by looking bubbles.

\end{description}


