1.05.004 Purging and Removal of fluids from units known to have been in H2S service

This procedure is under development.

Purpose

This procedure provides a standard process for helping in the aid of removing residual H2S from any remaining fluids in the compressor unit that was known to have the possibility of H2S. This procedure is for units that are known to have had H2S while still on any field location or after being returned to a Flogistix yard or facility. This will also aid in helping to remove some of the hazardous H2S that maybe remaining in any gas piping that is on the compressor skid

This procedure follows a lot of the same guidelines as Flogistix policy 1.05.002 for the removal of Flammable and Production fluids from Flogistix compressors

Procedure

This procedure applies to all Flogistix compressor packages that are to be shipped from a known H2S location to a Flogistix Service or Manufacturing location. The following steps must be followed

Make special notice of the wind direction when working on a known H2S location. Anytime when working on a known H2S location it is highly recommended that the work being performed be done with some kind of natural wind. Working with zero wind creates an additional hazard, any wind even a slight breeze will help in the dissipation of any H2S gas that maybe released to atmosphere. If there is zero wind on location it is a judgement call by the Flogistix employee to continue work. All Flogistix employees have Stop Work Authority. Always work upwind of any work being performed or of any potential gas being released.

If Compressor is still located on Customer location:

Removal of production fluids from scrubber vessel(s) with customer piping still connected​.

If dump piping is still connected to unit and unit can be started: Start up unit and build discharge pressure. Use the Auto Dump system and manually evacuate fluids from the inlet vessel using the integrated blowcase system. If the unit is not equipped with an integrated dump the unit will have to have enough inlet pressure to evacuate the fluids out of the inlet vessel and into the customer’s tanks where production fluids are gathered. If fuel scrubber drain is connected on site, drain it through existing piping.

Removal of production fluids from vessel(s) when all of customer’s piping has been disconnected.

If unit is still on Customers location​ but compressor unit is disconnected from all customer’s piping, production fluid will have to be removed using a Flogistix Service Truck equipped with an oil evacuation (Sage) system.

It is not recommended to use a metal bucket for the removal of production fluids for locations known to have any levels of H2S. The draining of fluids with H2S into an open metal bucket may result in those fluids releasing concentrations of H2S that are greater than the allowable limits or exposure without proper breathing equipment.

Removal of production fluids from vessel(s) after unit has been moved from customer’s location or returned to a Flogistix yard​.

When a compressor unit has been returned to a Flogistix yard that is known to have come from an H2S location, all production fluid if still remaining in vessels will have to be removed using a Flogistix Service Truck with an oil evacuation (Sage) system. It is not recommended to use a metal bucket for the removal of production fluids for locations known to have any levels of H2S. The draining of fluids with H2S into an open metal bucket may result in those fluids releasing concentrations of H2S that are greater than the allowable limits or exposure without proper breathing equipment. Metal buckets ARE NOT to be used to drain any production fluids from a known H2S unit while the unit is inside any building.

At the Pampa, TX Manufacturing facility, fluids are to be evacuated using the test loop area evacuation / reclamation system.

At the Longmont Rebuild facility, fluids will be removed outside using the portable evacuation system.

Compressor oil should also be drained and then replaced with fresh compressor oil due to H2S that can become mixed in with the compressor oil. Compressor oil that has been saturated with H2S could continue to release some amounts of H2S after the unit has been purged by air or with nitrogen.

When all fluids have been removed or evacuated from compressor unit the spin on compressor filters will also need to be replaced. It is recommended that this portion of the procedure is also done when there is a wind present. It is known that H2S can build up in the filters after unit has sat being shut down.

After the removal of all production fluids from any know unit from an H2S location should be stored without any of the old or remaining fluids in any piping or vessels. If the unit is to be stored for any length of time it should be purged with nitrogen not compressed air. Air mixed with any H2S and left set creates additional and above normal corrosion to internal components of the compressor skid.

Before any work is to be performed on a known H2S unit at a service facility it is mandatory that the compressor unit be purged. If the work is going to be done after the unit is purged the use of compressed air is recommended. Purging of the unit at a facility needs to be done outside and down wind of any work activity.

After any work has been performed and the compressor unit is ready for shipment back to a field location or storage yard the fresh fluids that were added to the unit can be left in the compressor unit and does not have to be drained again.

If the compressor unit is going to be stored for any period of time it is recommended that the compressor unit be purged with nitrogen not compressed air.

After the unit has been purged and cleared of H2S the compressor unit will be tagged with a required tag stating the unit has been purged according to Flogistix policy.

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 follow the requirements outlined in this procedure and ask for assistance

Scope

This procedure applies to all FLOGISTIX –Field Service, Rebuild locations and Pampa/Gillette Manufacturing and is 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. 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 production fluids

Safety

All Personal Protective Equipment (PPE) for Field Mechanical duties apply for this procedure. Flogistix EHSS Manual, Section 8, Procedure 8.3 Personal Protective Equipment (PPE)

Four Gas Monitor, which is outlined in the Flogistix EHSS Manual, Section 8, Procedure 8.3 Personal Protective Equipment (PPE)

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 any Customers safety practices if compressor unit is on customers location.

Proper use of required tools

Disposal of Production fluids

Flogistix Service Technicians performing Procedure will dispose of any production fluids according to Flogistix policy. Disposal of any fluids will be done at an approved or designed waste location.

Training

All employees shall be initially trained on the following topics:

• Employee Personal Protective Equipment (PPE)

• 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 Procedure of removing production fluids from compressor units shall be required to have the listed tools to perform job tasks:

• Flogistix Service truck with an oil evacuation (Sage) system.

• Metal Bucket with bonding cable (Not recommended for this procedure)

Approvals:

Field Service approved by:

Engineering approved by:

EHSS approved by: