$$
\begin{aligned}
&\text {Develop sketches of reactor vent systems for the following four cases: }\\
&\begin{array}{lcccc}
& \begin{array}{c}
\text { Case } \\
\text { a }
\end{array} & \begin{array}{c}
\text { Case } \\
\text { b }
\end{array} & \begin{array}{c}
\text { Case } \\
\text { c }
\end{array} & \begin{array}{c}
\text { Case } \\
\text { d }
\end{array} \\
\hline \text { Reactor relief is vapor only } & \mathrm{x} & & & \mathrm{x} \\
\text { Reactor relief is two-phase flow } & & \mathrm{x} & \mathrm{x} & \\
\begin{array}{l}
\text { Reactor contents are corrosive } \\
\text { Reactor contents are plugging type }
\end{array} & & \mathrm{x} & & \mathrm{x} \\
\begin{array}{l}
\text { Relieved vapors are toxic }
\end{array} & \mathrm{x} & & & \\
\begin{array}{l}
\text { Relieved vapors are high boilers } \\
\text { Vapors are low boilers }
\end{array} & \mathrm{x} & \mathrm{x} & & \mathrm{x} \\
\hline
\end{array}
\end{aligned}
$$