Prepare a technical memo that identifies the hazards that must be locked out as part of a confined space entry permit. For each hazard that you identify, suggest how to isolate the hazard and to lock it out. Attach a copy of the drawing on page $2$ of this assignment with any clarifying notes you have made on it$.$ A scan with handwritten notes on the drawing is acceptable. The technical memo itself must be in a formal business format. When a pipe is connected to a confined space, OSHA does not consider closing and locking a single valve adequate, because a valve can leak through. Instead, it wants either two valves closed and locked, with a venting valve between them opened $($double block and bleed$-$DBB$)$ OR it wants the pipe disconnected and the connection point fitted with a blank, cap, or plug.

An electric motor drives the agitator, $1$AG$5003,$ in the blend tank, $1$BT$5003.$ Some of the pipes connected to the tank are marked with $$flags$$ that describe what they contain or where they come from, but some are not.