Compressor Stations

Get Started. It's Free
or sign up with your email address
Compressor Stations by Mind Map: Compressor Stations

1. Liquid separators shall be manufactured in accordance with Section VIII of the BPV Code

2. Compressor Station Design

2.1. Location of Compressor Building

2.1.1. The main compressor building should be located at such clear distances from adjacent property not under control of the operating company as to minimize the hazard of communication of fire to the compressor building from structures on adjacent property

2.1.2. Sufficient open space should be provided around the building to permit the free movement of firefighting equipment

2.2. Building Construction.

2.2.1. All compressor station buildings that house gas piping in sizes larger than NPS 2 (DN 50) or equipment handling gas (except equipment for domestic purposes) shall be constructed of noncombustible or limited combustible materials as defined in NFPA 220 (Standard on Types of Building Construction)

2.3. Exits.

2.3.1. A minimum of two exits shall be provided for each operating floor of a main compressor building, basements, and any elevated walkway or platform 10 ft (3 m) or more above ground or floor level.

2.3.2. The maximum distance from any point on an operating floor to an exit shall not exceed 75 ft (23 m), measured along the centerline of aisles or walkways

2.3.3. Exits shall be unobstructed doorways located so as to provide a convenient possibility of escape and shall provide unobstructed passage to a place of safety

2.3.4. Door latches shall be of a type that can be readily opened from the inside without a key.

2.3.5. All swinging doors located in an exterior wall shall swing outward.

2.4. Fenced Areas.

2.4.1. Any fence that may hamper or prevent escape of persons from the vicinity of a compressor station in an emergency shall be provided with a minimum of two gates.

2.4.2. These gates shall be located so as to provide a convenient opportunity for escape to a place of safety

2.4.3. Any such gates located within 200 ft (61 m) of any compressor plant building shall open outward and shall be unlocked (or capable of being opened from the inside without a key) hen the area within the enclosure is occupied.

2.4.4. Alternatively, other facilities affording a similarly convenient exit from the area may be provided

3. Compressor Station Equipment

3.1. Gas Treating Facilities

3.1.1. Liquid Removal.

3.1.2. Nuevo Tema

3.2. Fire Protection.

3.2.1. Fire protection facilities should be provided in accordance with the American Insurance Association’s recommendations.

3.2.1.1. Liquid Removal Equipment.

3.2.1.1.1. The designer of the liquid removal equipment shall apply an appropriate corrosion allowance and shall address all liquid andwater hammer loads so that Code allowable stresses are not exceeded.

3.2.2. If the fire pumps are a part of such facilities, their operation shall not be affected by emergency shutdown facilities.

3.3. Safety Devices

3.3.1. Emergency Shutdown Facilities

3.3.1.1. 1

3.3.1.1.1. compressor station shall be provided with an emergency shutdown system by means of which the gas can be blocked out of the station and the station gas piping blown down

3.3.1.1.2. Operation of the emergency shutdown system also shall cause the shutdown of all gas compressing equipment and all gas-fired equipment.

3.3.1.1.3. Operation of this system shall de-energize the electrical facilities located in the vicinity of gas headers and in the compressor room, except those that provide emergency lighting for personnel protection and those that are necessary for protection of equipment

3.3.1.1.4. The emergency shutdown system shall be operable from any one of at least two locations outside the gas area of the station, preferably near exit gates in the station fence, but not more than 500 ft (150 m) from the limits of the stations.

3.3.1.1.5. Blowdown piping shall extend to a location where the discharge of gas is not likely to create a hazard to the compressor station or surrounding area.

3.3.1.2. 2

3.3.1.2.1. Unattended field compressor stations of 1,000 hp (746 kW) and less are excluded from the provisions of (1)

3.3.1.3. 3

3.3.1.3.1. Each compressor station supplying gas directly to a distribution system shall be provided with emergency shutdown facilities located outside the compressor station buildings by means of which all gas can be blocked out of the station, provided there is another adequate source of gas for the distribution system

3.3.1.3.2. These shutdown facilities can be either automatic or manually operated as local conditions designate.

3.3.1.3.3. When no other gas source is available, no shutdown facilities that might function at the wrong time and cause an outage on the distribution system shall be installed.

3.3.1.4. 4

3.3.1.4.1. each compressor station handling gas that contains quantities or concentrations of hydrogen sulfide and/or liquids sufficient to present an environmental or safety hazard shall be provided with an emergency shutdown system.

3.3.1.4.2. The emergency shutdown system and automatic or manual blowdown processes and equipment must be designed to prevent the automatic release of hydrogen sulfide, condensable vapors, or free liquids into the atmosphere in concentrations that may be hazardous to the operator or the general public

3.3.2. Engine Overspeed Stops.

3.3.2.1. Every compressor prime mover, except electrical induction or synchronous motors, shall be provided with an automatic device that is designed to shut down the unit before the maximum safe speed of either the prime mover or driven unit, as established by the respective manufacturers, is exceeded.

3.4. Pressure-Limiting Requirements in Compressor Stations

3.4.1. Pressure Relief

3.4.1.1. Pressure relief or other suitable protective devices of sufficient capacity and sensitivity shall be installed and maintained to ensure that the maximum allowable operating pressure of the station piping and equipment is not exceeded by more than 10%.

3.4.2. Pressure Relief Valves.

3.4.2.1. A pressure relief valve or pressure-limiting device, such as a pressure switch or unloading device, shall be installed in the discharge line of each positive displacement transmission compressor between the gas compressor and the first discharge block valve.

3.4.2.2. If a pressure relief valve is the primary overprotection device, then the relieving capacity shall be equal to or greater than the capacity of the compressor.

3.4.2.3. If the relief valves on the compressor do not prevent the possibility of overpressuring the pipeline as specified in section 845, a relieving or pressure-limiting device shall be installed on the pipeline to prevent it from being overpressured beyond the limits prescribed by this Code.

3.4.3. Venting.

3.4.3.1. Vent lines provided to exhaust the gas from the pressure relief valves to atmosphere sh all be extended to a location where the gas may be discharged without undue hazard.

3.4.3.2. Vent lines shall have sufficient capacity so that they will not inhibit the performance of the relief valve. For additional design considerations, see para. 841.1.9(d).

3.5. Fuel Gas Control.

3.5.1. An automatic device designed to shut off the fuel gas when the engine stops shall be provided on each gas engine operating with pressure gas injection.

3.5.2. The engine distribution manifold shall be automatically vented simultaneously.

3.6. Cooling and Lubrication Failures.

3.6.1. All gas compressor units shall be equipped with shutdown or alarm devices to operate in the event of inadequate cooling or lubrication of the units.

3.7. Explosion Prevention

3.8. Gas Detection and Alarm Systems

4. Electrical Facilities

4.1. All electrical equipment and wiring installed in gas transmission and distribution compressor stations shall conform to the requirements of NFPA 70,

4.2. Electrical installations in hazardous locations as defined in NFPA 70 (National Electrical Code) and that are to remain in operation during compressor station emergency shutdown shall be designed to conform to NFPA 70 for Class I, Division 1 requirements

5. Compressor Station Piping

5.1. Gas Piping.

5.2. Fuel Gas Piping.

5.3. Air Piping System

5.4. Lubricating Oil Piping.

5.5. Water Piping.

5.6. Steam Piping.

5.7. Hydraulic Piping.