7.04.004 Low Suction (Trouble Shooting Guide)

This Policy is Under Development. If questions please contact Area Manger.

Purpose

The purpose of this trouble-shooting guide is to assist you in diagnosing a Low Suction fault.

Procedure

This procedure applies to all units that are currently in service in the field, at a repair shop, and in storage yards.

Before any work is performed a JSA must be completed according to Flogistix procedure along with any customer requirements before any work is started.

Help guide to trouble shooting a Low Suction fault.

Diagnosing Low Suction Faults

Are you having low suction faults? Follow this trouble shooting guide to help correct the issue.

Step 1: First let us start by comparing the suction pressure to the tank vapor pressure. There will be a small difference but not major. If you turn the unit on and find the suction pressure to rapidly go to the negatives this could indicate a clogged inlet filter.

Step 2: While the unit is running remove the plugs on the blow down valves for the inlet suction vessel. Open both valves to verify the issue. The bottom valve should have positive pressure and the top should have positive pressure as well. If the top valve has a vacuum when opened this indicated that the inlet filters is clogged and needs to be replaced.

Did this correct the low suction fault? If not, continue to step three.

Step 3: Lets continue by checking the FOXBORO transmitters. If fluid has made it to the transmitter it is possible to have a false reading. Transmitters should be drained and calibrated frequently to stay away from this issue. Start by closing shutting the unit in and blowing down the inlet suction pressure. After verifying the inlet vessel is blown down check the pressure on the transmitter used for the suction reading. Remove the plug on the front of the transmitter to bleed any leftover pressure. The transmitter should read 0 PSI at this point. If it is not reading 0 it should be drained and calibrated for proper reading. The same process applied to the transmitter that is being used for tank vapor pressure if it is accessible and the same style transmitter we supply for this application. If it is not our equipment being used to read the tank vapor pressure, contact customer for further assistance in calibrating the transmitter.

Follow the link below for instruction guide for calibrating and scaling a Foxboro transmitter.

FSB 1021- Foxboro Pressure Transmitter Setup Rev 1.pdf

Did this correct the low suction fault? If not, continue to step four.

Step 4: After verifying everything on skid is functioning properly, simply walk the suction line if possible and verify all valves that need to be open for standard operation are open. Automated valves can cause a low suction fault if they close during operation.

If issues continue after using this diagnostic sheet, contact your area lead for further instruction.

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 following requirements outlined in this procedure and ask for assistance

Scope

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. Environmental spill of compressor oil and possible production fluids

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 as required by the Flogistix Customer.

Insure Flogistix personnel adhere to all Customers safety practices.

Proper use of required tools

Spills and Disposal

All spills shall be handled immediately according to MSDS recommendations and the employee's level of training

Flogistix Service Technicians performing this task will properly dispose of any waste liquids or solids. Disposal of any fluids or solid waste will be disposed of properly according to Flogistix policy. Disposal of any fluids will be done at an approved or designed waste location. Disposal of solid waste from a compressor shaft seal change such as, oily rags, ETC, will be disposed of according to the local regulations regarding the disposal of oil soaked rags.

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

• MSDS Online System

• 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 Preventative Maintenance shall be required to have the listed tools to perform job tasks:

• All required PPE according to Flogistix Safety Policy

• Lock Out Tag Out LOTO items to properly perform LOTO procedure according to Flogistix policy

• Basic Hand Tools

Approvals

Field Service approved by:

Date:

Engineering approved by:

Date:

EHSS approved by:

Date: