MTS Model 286-30 Pore Pressure Intensifier - Manual (Page 19)

286.30 Pressure Intensifier Operation 19
Operation
This section contains procedures for all operations involving the flow and
pressurization of pore fluid. All operating controls on the Pore Pressure
Intensifier (PPI) are described. Safety considerations that should be observed
while operating the Pore Pressure Intensifier are included.
In addition to the Pore Pressure Intensifier, a pore pressure system typically
includes a hydraulic power supply, some type of electronic controller equipment,
and a triaxial cell designed to apply pore pressure to a rock specimen. Before
attempting to operate the PPI, become familiar with each component of the pore
pressure system by reading the introduction sections of the manuals that apply.
The table also indicates that pressurization and depressurization of pore fluid is
primarily under the control of the electronic controller equipment. Because of the
variety of electronic controller equipment that can be used with a pore pressure
system, information provided in this manual is limited to that which will enable
you to relate PPI parameters, such as fluid pressure and fluid volumetric
displacement, to controller functions such as the command, feedback, control,
error and limit functions.
A typical procedure for operating the Confining Pressure Intensifier would be:
1. Filling the reservoir; see “Filling the Reservoir” on page 30.
2. Filling the pressure intensifier; see “Filling the Pressure Intensifier” on page
32.
3. FIlling the specimen’s pores with pore fluid; see “Filling the Specimen’s
Pores with Pore Fluid” on page 35.
4. Heating the triaxial cell; see “Heating the Triaxial Cell” on page 39.
5. Pressurizing and depressurizing the pore fluid; see “Pressurizing and
Depressurizing the Pore Fluid” on page 40
6. Draining the reservoir to an external location; see “Draining the Reservoir to
an External Location” on page 42
Before operating the system for the first time, simulate the desired operation.
Locate the controls involved with each step, without actually performing the
adjustment. In this way, you will become familiar with the information that is
required or the decisions that must be made before beginning actual operation.