Preparing the PTV for operation.

1. Minimize the compressible volume of the PTV by installing as many aluminum ingots as possible to minimize the potential energy stored in the compressed water (see Sec 1.2).
2. Fill the vessel with water to a level that allows the cap to be lowered and rotated into the breech-lock. If the vessel is overfull, the cap will not drop far enough to rotate.
3. Lift the cap with the overhead crane. Inspect the o-ring surface in the vessel and clean if necessary. Clean and inspect the o-ring in the cap for nicks, cuts, foreign objects, etc. and then apply a thin film of o-ring lubricant.
4. Carefully position the cap directly over the vessel and, with the air-bleed valve open, lower the cap into place. The cap must be positioned so that the mating parts of the breech-lock will not hit or interfere while the cap is being lowered. The cap must be rotated properly because the breech-lock will mesh in only one way.
5. Make sure that the hydraulic ram on the closer is out of the way. Lower the cap until the weight is off the overhead crane. Check the mating parts of the breech-lock for alignment. Remove the crane hook from the cap.
6. Rotate the hydraulic closer into place and insert the threaded pin. Rotate the cap with the close to actuate the breech-lock -- stop when the locator contacts the stopper.
7. Open the air-bleed valve on the top of the cap. Fill the vessel until water flows out the open air-bleed valve. Run the high pressure pump during the fill in order to bleed any air out of the water feed lines. After all of the air is bled from the vessel, turn the high pressure pump off and close the air-bleed valve.