Seamless Service for Successful Station Upgrade

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Project

Manor Gate Station Upgrade

Location

Maryland

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Background

Baltimore Gas & Electric (BGE), the company that operates the entire Baltimore area gas distribution system and serves more than 650,000 customers, contracted EN Engineering to upgrade their existing Manor Gate legacy station. This station takes the transmission gas from TransCanada at 720 PSIG and lowers the pressure to 269 PSIG to feed BGE’s Beaver Dam and Notch Clift transmission lines.

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Challenges

The original BGE drawing showed 16” steel, but the pipe was 24”, so the spherical tee that was ordered for 16” did not work. A custom-made tee was ordered, which resulted in a 14-week delay. In addition, commissioning was delayed due to the frigid ambient temperature and weather forecast.

Solutions

The Manor Gate Station upgrade project included two meter runs, four regulator runs, a separator/filter, heater, odorization, controls, and fire suppression, in addition to considerable construction of buildings and concrete to house this equipment. EN Engineering took the design work from conception through completion and also provided the environmental and construction materials testing, resulting in time and cost efficiencies. The team developed accurate and detailed as-built drawings, which required minimal field changes. The construction management team was on site and eliminated time lapses for design questions during construction. Throughout the project, they focused on jobsite safety, contractor oversight, adherence to BGE standards, and cathodic protection. In addition, they interfaced with the compliance team, Certified Weld Inspector, and NACE coating inspection. Weekly meetings with the client’s senior management team assured the project was on track, and the EN Engineering team’s expertise was welcome and respected.

“EN Engineering took the design work from conception through final design and also provided the environmental and construction materials testing, resulting in time and cost efficiencies.”

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Multiple Product Areas Join Forces on Pipeline Project

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Project

New Pipeline and Injection Facilities

Location

Texas

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Background

A new midstream energy company called on EN Engineering for a wide array of services supporting a new pipeline system and injection facilities.

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Challenges

As a new company, the client had not yet developed comprehensive project procedures, so one challenge involved working together to establish new processes and standards. In addition, the project had an aggressive timeline and required the team to work at an accelerated pace.

Solutions

EN Engineering provided project management, engineering, and design services for a new pipeline system consisting of more than 70 miles of 8” and 12” diameter pipeline, as well as five new injection facilities for multiple third-party producers.

Experts from EN Engineering’s entire service portfolio came together to successfully complete the project. The pipeline design team provided oversite of the pipeline routing as well as development of engineering design details, while a facility team provided full mechanical, electrical, civil, and structural design packages, along with hydraulic and surge analysis.

Environmental experts oversaw an environmental survey and provided recommendations for both compliance measures and installation best practices along the pipeline. Several scenarios for flow modeling were evaluated by the integrity team, who also provided recommendations for emergency flow restricting device (EFRD) valves. GIS services were utilized to evaluate alternate pipeline routes and make a commercial recommendation. Designs for cathodic protection were provided by the corrosion team. Finally, procurement experts provided comprehensive support on all equipment, material, and labor contracts, from specification development to expediting and tracking deliveries.

EN Engineering also provided several specialty services, including in-house HAZOP facilitation and shop inspection services, and managed geotechnical, environmental survey, and mill inspection subcontractors. The automation team developed the control philosophy for the injection facilities and interfaced with third-party programmers and PLC integrators.

The EN Engineering team was instrumental in guiding industry best practices and helping the client develop new procedures and standardizations. In addition, they facilitated communications despite several changes in client stakeholders at critical stages during front-end loading and worked at an accelerated pace to meet project deadlines.

“Experts from EN Engineering’s entire service portfolio came together to successfully complete the project.”

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Meter and Regulator Station Upgrades

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Project

Meter and Regulator Station Upgrades

Location

New York

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Background

The client, a large pipeline company, requested the help of EN Engineering to expand the capacity and system flexibility of their existing meter and regulating (M&R) station to approximately 1,200 MMSCFD. This was accomplished by installing two additional 16-inch ultrasonic meter runs, two full capacity filter separators, a water bath heater, two sets of dual flow and pressure control valve runs, along with the associated valves and liquid storage tank.

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Challenges

The challenging design involved adding a third M&R substation to the already space-constrained station footprint while providing maximum system flexibility for both measurement and flow control between the three substations.

Solutions

EN Engineering engineered, designed, drafted, procured and created the necessary documents to help our client increase the overall station capacity to approximately 1,200 MMSCFD thru a series of station upgrades, including the installation of new meter and regulating equipment. The new facilities were designed to have a stand-alone capacity of 900 MMSCFD. The new design consisted of two, 16-inch ultrasonic meter runs; two filter separators; an indirect fired water bath heater; flow and pressure control valves; and all associated EFM and system safety equipment. This new M&R station was designed to operate independently or in tandem with the existing two substations to provide increased system flexibility and reliability. The facility upgrades included replacing three existing turbine meter runs with new AGA-compliant ultrasonic measurement equipment, additional overpressure protection devices, and modifications to the existing RTU building to accommodate the new equipment. A station cross-tie with over pressure protection was also included to allow for an alternate feed of filtered gas to the existing measurement equipment.

The EN Engineering team worked closely with the client to develop the necessary drawings and supporting documents to meet FERC, federal, state, and local requirements. The team developed and maintained a detailed project plan to ensure everyone was working towards the same project milestones, including the FERC submittal, permit requirements, and design installation. Complete bills of material and purchasing requisitions were prepared for both long- and short-term material. EN Engineering assisted the client with the associated procurement activities by preparing Request for Quotations (RFQ), segregated by category, to allow the client to submit requests for quotation in an orderly format.

EN Engineering engineered, designed, drafted, procured and created the necessary documents to help our client increase the overall station capacity.

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Extensive Water and Wastewater Corrosion Control Project

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Project

Corrosion Control for City of Houston Water and Wastewater Group

 

Location

Houston, Texas

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Background

The city of Houston called on EN Engineering to assist with a corrosion control project for their Water and Wastewater Group. The project is the Corrosion team’s largest water project to date.

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Challenges

Houston is the fourth largest city in the country, so the initial challenge included locating the hundreds of corrosion control systems that needed to be assessed. Once located, the team documented locations to create a historical record of corrosion data for future reference and began the large-scale assessment process. The project continues with ongoing monitoring and maintenance.

Solutions

The scope of the five-year project includes maintenance of the current system, design of new systems, and analysis on lines that fail. The project involves all of the large diameter water mains, facilities, and wastewater systems throughout the city.

During the initial months, the EN Engineering team began locating and assessing the current corrosion control systems by identifying and visiting all the pipelines and facilities around the city. The team went out with metal detectors to find the caps that lead to the water lines. Once located, a GPS reading was taken and the information was entered into a GIS mapping database to make the process easier in the future. The team used a GIS mapping tool and added information on water lines and test stations to the city’s map to help determine where the lines are located and enable the team to assess CP levels by regions. The GIS tool also created a historical record of corrosion data for future reference.

Following completion of the identification and assessment of all the locations, the city requested that the EN Engineering team focus on stray current studies of the mainline water lines in the area of the Metro Light Rail system. In addition, they asked the team to help update the city’s GIS system and integrate all of the previously collected data, including test station readings, rectifier readings, water line leaks, soil resistivity and soil samples. Once all the information is compiled and processed, it will permanently reside within the city’s system.

The client’s vast corrosion control systems were successfully located, assessed, and documented in the city’s GIS system.

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