1.11.004 FX Screw Compressor Oil Piping

1.11.05 Thermostatic Valve (on Screw Compressor Oil piping)

This Policy is completed and waiting Field Service, Engineering, and EHSS approval

Purpose

The purpose of this procedure is to establish the minimum requirements for understanding the basics of the FX model Screw Compressor Oil piping system on Flogistix FX model units. The procedure applies to all Flogistix FX model screw compressor units.

Procedure

This procedure applies to all Flogistix FX model screw compressor units that are currently in service in the Field, Test Loop, at a Repair Shop, or in Storage Yards.

The Compressor Oil System is very simple for Rotary Screws.

The oil reservoir for the compressor is the Discharge Vessel as mentioned in Field Service procedure 1.11.02 Discharge/Receiver Vessel. 1.11.02 Discharge/Receiver Vessel

The compressor oil travels out of the vessel to the oil piping going to a thermostatic valve.

At the thermostatic valve the oil either gets diverted to go through the oil cooler and then on through the thermostatic valve or if the oil is not hot enough it will go directly into the thermostatic valve. After it passes through the thermostatic valve the flows to the oil filtration. After the oil filtration it will travel to the compressor injection.

This is a typical illustration of the oil piping on an FX unit. (Shown below)

This illustration above shows the thermostat piping as Blending.

The piping goes out of the Discharge vessel to the Thermostatic valve that controls the oil injection temperature.

When the thermostatic valve is set up as Blending, the thermostatic valve controls the temperature of the compressor oil going to the injection port of the Screw as in this illustration.

There are different temperature range thermostatic elements that can be installed to achieve the required oil injection temperature

On Electric units the oil injection temperature is monitored by the LOGIX panel and can be seen on the main page of the touchscreen.

This is done by a temperature probe in the oil piping between the oil filter housing and the oil injection port going into the compressor.

If the oil injection temperature stays below the Low Injection Temperature set point in the panel after the set time period it will shut the compressor down.

This is a hard fault shutdown and not an auto restart option.

Running below the set point of the Oil Injection temperature will result in low discharge temperatures that could be below the Dew Point of the compressed gas.

This could lead to Oil dilution or condensate build up in the compressor oil.

This is discussed on the Field Service Wiki 1.5.01 Minimum Viscosity Limits for Poly Glycol Synthetic Screw Compressor Oil 1.5.01 Minimum Viscosity Limits for Poly Glycol Synthetic Screw Compressor Oil

There are three ports in the Thermostatic Valve The ports are either stamped or cast with the letters A, B, & C.

For the Thermostatic Valve refer to the Thermostatic Valve (on Screw Compressor Oil piping) on the Field Service Wiki procedure 1.11.5 1.11.05 Thermostatic Valve (on Screw Compressor Oil piping)

After leaving the Thermostatic valve, oil will flow to the oil filter housing.

Depending on the compressor model and size of the compressor, the oil filter housing can have one or up to four spin on filters.

Responsibilities

Management - Management is responsible for implementing, supporting, and enforcing the requirements of this procedure to their respective locations/area.

EHSS - Responsible to assist in the implementation of this procedure and to review for effectiveness.

Employees, Contractors, Vendors, ETC. - Are responsible to follow the requirements outlined in this procedure and ask for assistance

Scope

This procedure applies to all Flogistix FX model Screw Compressor models and are applicable to all Flogistix employees, contractors, and temporary employees.

Hazards

Employees should be aware that units could contain flammable and toxic gasses. Potential for the possible hazards of gas ignition or fire, hot surfaces & fluids, rotating equipment. Risk of possible concentration of H2S. Hazardous gases could be in the units pressure vessels, cooler, or associated piping and risk of inhalation of hazardous gas fumes.

Safety

All Personal Protective Equipment (PPE) for normal Field Mechanical duties apply for this procedure.

Four Gas Monitor, which is outlined in the Flogistix EHSS Manual, PPE Section 8, Procedure 8.3

This procedure applies to all units in service in the field, at a service shop, or in any storage yard.

Insure Flogistix personnel have proper safety certification or site orientation if required by the Flogistix Customer.

Insure Flogistix personnel adhere to all Customers safety practices.

Training

All employees shall be initially trained on the following topics:

• Employee Personal Protective Equipment (PPE)

• Lock Out Tag Out (LOTO) procedure according to Flogistix policy

• Emergency and First Aid procedures

• Methods and Observations that may be used to detect the presence or release of a hazardous chemicals or gas in the work place

Tools & Equipment Required

All employees performing this procedure shall be required to have the listed tools to perform job tasks:

• All required PPE according to Flogistix Safety Policy

Approvals

Field Service approved by:

Date:

Engineering approved by:

Date:

EHSS approved by:

Date: