Compliance verification activity type: Field Inspection
Team:
Regulated company: Enbridge Pipelines Inc.
Operating company: Enbridge Pipelines Inc.
Province(s) / Territory(s):
Discipline(s):
Rationale and scope:
Construction Inspection L3RP (OC-63 & AO-1-XO-E101-004-2016) facilities - Pump stations West Souris, Glenboro, St.Leon, Gretna
Compliance tool(s) used:
Facilities:
Facility Types
Life-cycle Phases
Regulatory requirements that apply to this activity:
Observation 1 - West Souris Station
Date & time of visit: 2019-03-26 10:30
Discipline: Integrity Management
Categories:
Facility:
Observations:
Conducted opening meeting and site specific orientationThe station has multiple pump buildings which are housed inside a secure, fenced area with emergency crash gates and is accessible year-round. Signs on the main gate indicate company name, emergency contact number (verified), warnings identified.The scope of this inspection was limited to the Line 3 replacement Project components.All mechanical equipment was installed and work was ongoing to connect electrical and communications.This building contains two 7000 HP pumps and associated piping. The building is adequately ventilated with louvers and fans. Emergency shut down (ESD) push buttons are located and clearly marked at all man entrances to the pump building.A slab gate valve for station bypass is normally operated in the closed position. In a station emergency/maintenace situation, the slab gate valve will open and the suction and discharge valves will close and isolating the station from the mainline. Pressure and temperature measurements are taken on the suction and discharge piping and there is a flow meter on the discharge piping.Inside the pump building, there are three fire eyes mounted on the walls, as well as gas detectors are at the base of each pump unit. Each pump unit is equipped with a unit ESD push button, temperature sensors, vibration sensors on the pump unit and motor. The seal leak drain has a drilled orifice plate with a high alarm that will trigger a unit ESD. The discharge pipe has pressure sensors that will trigger a unit ESD to prevent an overpressure.The pump station building contains a single wall sump tank that is insulated and heated and has venting lines. The tank is equipped with a hi and hi-hi sensor for overfill protection with station shut down on hi-hi alarm. A sump tank inspection schedule is determined on a risk based model. The pump building also has a floor drain and pit with a two statge level switch (hi/hi-hi) that will trigger a station alarm and shut down.There is a transient pressure bypass line with check valve which will bypass station pumps and return back into the station discharge side after the pumps in the event of a transient pressure event. This bypass line is internally coated and inspection schedule is determined on a risk based model.Valves were identified and open/closed positions were clearly indicated. Name plates were affixed to major equipment and legible. Piping appeared to be adequately supported.Emergency shut down (ESD) push buttons located and clearly marked at all man-door entrances at the Variable Frequency Drive (VFD) building as well as the ESB (Electrical Switchgear Building). The Unit Pump Building (UPB) will also be equipped with (ESD) push buttons at all man-doors after construction is complete.The VFD building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut downThe ESB building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut down and bypass.Work was ongoing to equip the station with an uninterruptable power supply (UPS) battery with a diesel generator back up. UPS will power emergency communications only, and it does not have enough power to close station valves to put station in bypass. In the event of an emergency, the station emergency generator will isolate the station valves and equipment associated with the station emergency shutdown sequencing. . The UPS is inspected annually and more thoroughly on a 5 year inspection cycle. The generator is inspected monthly with a more thorough annual inspection.
Compliance tool used: No compliance tool used
Observation 2 - Glenboro Station
Date & time of visit: 2019-03-27 09:00
Conducted site specific orientationThe station has multiple pump buildings which are housed inside a secure, fenced area with emergency crash gates and is accessible year-round. Signs on the main gate indicate company name, emergency contact number (verified), warnings identified.The scope of this inspection was limited to the Line 3 replacement Project components.All mechanical equipment was installed and work was ongoing to connect electrical and communications.This building contains three 7000HP pumps and associated piping. The building is adequately ventilated with louvers and fans. Emergency shut down (ESD) push buttons are located and clearly marked at all man entrances to the pump building.A slab gate valve for station bypass is normally operated in the closed position. In a station emergency/maintenace situation, the slab gate valve will open and the suction and discharge valves will close and isolating the station from the mainline. Pressure and temperature measurements are taken on the suction and discharge piping and there is a flow meter on the discharge piping.Inside the pump building, there are three fire eyes mounted on the walls, as well as gas detectors are at the base of each pump unit. Each pump unit is equipped with a unit ESD push button, temperature sensors, vibration sensors on the pump unit and motor. The seal leak drain has a drilled orifice plate with a high alarm that will trigger a unit ESD. The discharge pipe has pressure sensors that will trigger a unit ESD to prevent an overpressure.The pump station building contains a single wall sump tank that is insulated and heated and has venting lines. The tank is equipped with a hi and hi-hi sensor for overfill protection with station shut down on hi-hi alarm. A sump tank inspection schedule is determined on a risk based model. The pump building also has a floor drain and pit with a two statge level switch (hi/hi-hi) that will trigger a station alarm and shut down.There is a transient pressure bypass line with check valve which will bypass station pumps and return back into the station discharge side after the pumps in the event of a transient pressure event. This bypass line is internally coated and inspection schedule is determined on a risk based model.Valves were identified and open/closed positions were clearly indicated. Name plates were affixed to major equipment and legible. Piping appeared to be adequately supported.Emergency shut down (ESD) push buttons located and clearly marked at all man-door entrances at the Variable Frequency Drive (VFD) building as well as the ESB (Electrical Switchgear Building). The Unit Pump Building (UPB) will also be equipped with (ESD) push buttons at all man-doors after construction is complete.The VFD building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut downThe ESB building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut down and bypass.Work was ongoing to equip the station with an uninterruptable power supply (UPS) battery with a diesel generator back up. UPS will power emergency communications only, and it does not have enough power to close station valves to put station in bypass. In the event of an emergency, the station emergency generator will isolate the station valves and equipment associated with the station emergency shutdown sequencing. . The UPS is inspected annually and more thoroughly on a 5 year inspection cycle. The generator is inspected monthly with a more thorough annual inspection.
Observation 3 - St. Leon Station
Date & time of visit: 2019-03-27 14:00
Conducted site specific orientationThe station has multiple pump buildings which are housed inside a secure, fenced area with emergency crash gates and is accessible year-round. Signs on the main gate indicate company name, emergency contact number (verified), warnings identified.The scope of this inspection was limited to the Line 3 replacement Project components.All mechanical equipment was installed and work was ongoing to connect electrical and communications.This building contains three 7000HP pumps and associated piping. The building is adequately ventilated with louvers and fans. Mounts for Emergency shut down (ESD) push buttons are located at all man entrances to the pump building.A slab gate valve for station bypass is normally operated in the closed position. In a station emergency/maintenace situation, the slab gate valve will open and the suction and discharge valves will close and isolating the station from the mainline. Pressure and temperature measurements are taken on the suction and discharge piping and there is a flow meter on the discharge piping.Inside the pump building, there are three fire eyes mounted on the walls, as well as gas detectors are at the base of each pump unit. Each pump unit is equipped with a unit ESD push button, temperature sensors, vibration sensors on the pump unit and motor. The seal leak drain has a drilled orifice plate with a high alarm that will trigger a unit ESD. The discharge pipe has pressure sensors that will trigger a unit ESD to prevent an overpressure.The pump station building contains a single wall sump tank that is insulated and heated and has venting lines. The tank is equipped with a hi and hi-hi sensor for overfill protection with station shut down on hi-hi alarm. A sump tank inspection schedule is determined on a risk based model. The pump building also has a floor drain and pit with a two statge level switch (hi/hi-hi) that will trigger a station alarm and shut down.There is a transient pressure bypass line with check valve which will bypass station pumps and return back into the station discharge side after the pumps in the event of a transient pressure event. This bypass line is internally coated and inspection schedule is determined on a risk based model.Valves were identified and open/closed positions were clearly indicated. Name plates were affixed to major equipment and legible. Piping appeared to be adequately supported.Emergency shut down (ESD) push buttons located and clearly marked at all man-door entrances at the Variable Frequency Drive (VFD) building as well as the ESB (Electrical Switchgear Building). The Unit Pump Building (UPB) will also be equipped with (ESD) push buttons at all man-doors after construction is complete.The VFD building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut downThe ESB building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut down and bypass.Work was ongoing to equip the station with an uninterruptable power supply (UPS) battery with a diesel generator back up. UPS will power emergency communications only, and it does not have enough power to close station valves to put station in bypass. In the event of an emergency, the station emergency generator will isolate the station valves and equipment associated with the station emergency shutdown sequencing. . The UPS is inspected annually and more thoroughly on a 5 year inspection cycle. The generator is inspected monthly with a more thorough annual inspection.
Observation 4 - Gretna Station
Date & time of visit: 2019-03-28 09:00
Conducted site specific orientationThe station has multiple pump buildings which are housed inside a secure, fenced area with emergency crash gates and is accessible year-round. Signs on the main gate indicate company name, emergency contact number (verified), warnings identified.The scope of this inspection was limited to the Line 3 replacement Project components. This station included the installation of two 42”x36" pig traps.All mechanical equipment was installed and work was ongoing to connect electrical and communications.This building contains three 7000HP pumps and associated piping. The building is adequately ventilated with louvers and fans. Emergency shut down (ESD) push buttons are located and clearly marked at all man entrances to the pump building.A slab gate valve for station bypass is normally operated in the closed position. In a station emergency/maintenace situation, the slab gate valve will open and the suction and discharge valves will close and isolating the station from the mainline. Pressure and temperature measurements are taken on the suction and discharge piping and there is a flow meter on the discharge piping.Inside the pump building, there are three fire eyes mounted on the walls, as well as gas detectors are at the base of each pump unit. Each pump unit is equipped with a unit ESD push button, temperature sensors, vibration sensors on the pump unit and motor. The seal leak drain has a drilled orifice plate with a high alarm that will trigger a unit ESD. The discharge pipe has pressure sensors that will trigger a unit ESD to prevent an overpressure.The pump station building contains a single wall sump tank that is insulated and heated and has venting lines. The tank is equipped with a hi and hi-hi sensor for overfill protection with station shut down on hi-hi alarm. A sump tank inspection schedule is determined on a risk based model. The pump building also has a floor drain and pit with a two statge level switch (hi/hi-hi) that will trigger a station alarm and shut down.There is a transient pressure bypass line with check valve which will bypass station pumps and return back into the station discharge side after the pumps in the event of a transient pressure event. This bypass line is internally coated and inspection schedule is determined on a risk based model.Valves were identified and open/closed positions were clearly indicated. Name plates were affixed to major equipment and legible. Piping appeared to be adequately supported.Emergency shut down (ESD) push buttons located and clearly marked at all man-door entrances at the Variable Frequency Drive (VFD) building as well as the ESB (Electrical Switchgear Building). The Unit Pump Building (UPB) will also be equipped with (ESD) push buttons at all man-doors after construction is complete.The VFD building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut downThe ESB building has smoke, fire and gas sensors, which in the event of an emergency will trigger a station shut down and bypass.Work was ongoing to equip the station with an uninterruptable power supply (UPS) battery with a diesel generator back up. UPS will power emergency communications only, and it does not have enough power to close station valves to put station in bypass. In the event of an emergency, the station emergency generator will isolate the station valves and equipment associated with the station emergency shutdown sequencing. . The UPS is inspected annually and more thoroughly on a 5 year inspection cycle. The generator is inspected monthly with a more thorough annual inspection.
Identified non-compliances to company plans or procedures are non-compliances either to:
- the condition of an authorization document that requires the implementation of that plan or procedure; or
- the relevant section of the regulations that requires implementation of that plan or procedure including those sections that require implementation of plans or procedures as a part of a Program