Beijing Yintai Centre is located in the core of Beijing's Central Business District. It is a three-tower structure with 63-levels, 118,519 square meters consisting of 237-rooms Park Hyatt Hotel, 44 luxury apartments and 216 service apartments. Flanking this main tower are two 186-metre-high office towers. These two 73,500-square-metre towers will housed 44-levels of office spaces (one office tower has 71,926 square meters of space, while the other has 71,980 square meters of space). The project was designed by Architect John Portman and is an outstanding landmark along Beijing's CBD.
PowerQ was commissioned as a Commissioning Management Company by the developer M/s Yintai Holdings Ltd. PowerQ was engaged to perform commissioning services during the acceptance of the following systems:
Upon arrival of PowerQ, various systems were evaluated for performance and several rectifications or improvements were made to meet the requirements of the international clients including Hyatt International. PowerQ provided its expertise of engineers, technicians and various testing and diagnostic instruments. Various equipments were tested for performance including Air Handling Units, Heat Exchanger, Boilers, Chiller, Cooling Tower, Emergency Generator and Fire Pumps. PowerQ guided the team of contractors to rectify any defects and improve installation.
Commissioning work performed during year 2008 -2009 resulted in the following benefits:
Since first quarter of year 2008 to early 2010, client had continuously engaged PowerQ's services to provide HVAC commissioning and validation services for its Greenfield Biological Vaccine Plant located in Singapore.
PowerQ supported by equipping the project with trained engineers and instruments for indoor environmental system test used for commissioning and validation of plant parameters. PowerQ team conscientiously assisted to perform tests, adjust and test the production building and performed dynamic commissioning of HVAC and control system for plant. These works comprises of several large buildings. The operation encompass production accurate test record as per GDP for further GMP and FDA verification.
Our project team put in effort in overnight shift for several months to perform tests during the operation hours when there was minimum personnel in the plant. PowerQ had successfully completed the commissioning of the Biologicals Vaccine Plant, Singapore.
LM, a world class printer system manufacturer, required an independent Third Party to survey and audit their fire sprinkler system for the Electronics Facility in Cebu, Philippines. A comparison of compliance to NFPA Codes, specifically NFPA 13 and 20, was used as a basis for ascertaining the degree of expected standard of installation.
A survey and audit of the fire sprinkler system after the physical site survey and audit were carried out together with a specialist fire protection consultant.
Flow tests for the sprinkler pumps were conducted using our Panametric ultrasonic flowmeter. The tests were witnessed by the facility manager and representatives from insurance company-Zurich. The flow tests were conducted at 100% and 150% of rated flow using the ultrasonic flowmeter and the recorded gauge pressure was found to be within the limits as prescribed by the NFPA Codes.
It was found that generally the fire protection system conformed to appropriate standards for the type and design that meets the NFPA code. However, the survey found some inadequacies in the condition and system status as reported in the survey report.
Control valves or individual isolation valves were accidentally closed.
One of the common possible faults; the fire protection system was fully operational and in good condition, except that the water supply is accidentally turned off.
It is understood from Lexmark that the control valves are only turned on when an alarm signal is received. This is strongly not recommended since the sprinklers are highly effective during initial stages when a fire occurs. Therefore, the immediacy of sprinklers response must not be compromised.
In this survey, individual isolation valves were observed. They were not strapped in the open position, which may invite tampering in the future. It was strongly recommended that all valves to be strapped and padlocked in the open position.
Sprinkler Pumps Installation
Pressure Relief Valve was not operating:
The pressure relief valve (PRV) at the Circuit Assembly Plant was not working. In an unexpected scenario, the pressure in the sprinkler system may build up beyond the recommended operating range of the sprinkler pump. This may result in drastic dip in the pressure and insufficient water at sprinkler heads.
Inspector Test Valve Assembly:
The relief valve at the inspector test valve assembly was not opened. This may result in excessive pressure build-up within the sprinkler system.
Fire and Jockey Pump Pressure Settings:
For the fire pump, when it starts by pressure drop, it should be arranged to ensure that the first fire pump to operate does not cause water hammer. This could occur if the system allowed the pressure to drop too low. When a fire pump starts, the pressure will be equal to its churn pressure which is typically between 101% and 140% of the rated pressure.
Jockey pumps should be arranged to cut-in at the fire pump churn pressure and cut-out at the pump churn pressure plus 10psi. The first fire pump should operate at 5psi lesser than the pump churn pressure. Additional pumps should operate at additional 10 psi. It was also recommended that a confirmation shall be done prior to increasing the system pressure that is capable of maintaining at that rate.
Client was advised to rectify other faults in the next preventive maintenance period.
M.E.S electronics plant had encountered with an incident where a water pipe had leaked in the Process area. The owner took a proactive approach to investigate the piping condition and had requested TKS to conduct necessary investigation and audit to check the system's integrity. PowerQ was called upon to assist TKS to inspect hundreds of meters in several buildings at the site.
The objective of the work was to:
An on-site inspection of all the piping services equipments at Plant and Production area. Where applicable, we refer to relevant codes such as ANSI/API570 (Piping Inspection Code: Inspection, Repair, Alteration, and Re-rating of In-Service Piping Systems) to inspect the piping.
100% visual check at accessible areas to locate any abnormalities such as leaks, cracks, pits and abnormal condition of support and hangers without removing the piping.
Visual inspection of the cut-out piping where leakage occurred and separate condition testing was performed in Japan by Taikisha. Visual inspection shows no internal deposit or pitting of copper pipe.
Random Thickness test was carried out by Certified NDT professional at the location identified by PowerQ Inspection Team. This measuring system is employed to inspect the pipelines corrosion that reduces wall thickness and may eventually lead to cracks leading to potential disastrous consequences.
Visual pipe line inspection was aided by equipments such as magnifying glass, measuring tape, vernier calipers, mirrors, high beam torch light and digital camera. Identification shall be given to tested locations and referred from relevant drawings.
Findings and Recommendations:
Several anomalies related to installation and mechanical damage to piping were identified. There were spots of water marks on ceiling board which was probably due to droplets from water condensation. However, there were no leakages on copper piping.
The thickness testing should be viewed as a first step to determine general condition in water piping. It was found that there is no appreciable loss of wall thickness and the copper pipe are not corroded internally.
After a series of ACB tripping at Main Switchboard of a chemical plant in SC Plant Pasir Gudang, the client had commissioned PowerQ to investigate the cause. PowerQ had performed the electrical monitoring of the Main Control Central Board and spot measurement of the MSB supplying power to MCC.
The inrush current was recorded at individual motors was performed at using PQ recorder. The data collected has been analyzed and checked against IEEE 519 standards.
Following recommendations implemented to prevent the tripping problem:
To avoid this scenario, the soft starter was recommended to be set to limit current to 300% and/or ramp time of the soft starter should be increased. Generally, a ramp time of 8 second should be sufficient to limit inrush below 300%. This was be done in confirmation with process' requirements. It was recommended that the correct setting of soft starter shall be implemented so as to reduce chances of tripping due to the starting current.
In year 2009, PowerQ had conducted an Electromagnetic Field survey emitted from crystal growth furnace. This was performed to find out the level of interference that caused the damage of several Fan Filter Units (FFU) at a new Wafer Fab in Singapore.
To manage this issue, PowerQ Engineers had installed EMF data logger to measure and monitor the EMF emissions in the areas over time and capture any peak values. The data were recorded for several weeks and at interval of 1-minute under varied operating condition. PowerQ had communicated the observation status and re-measured EMF after the proposed measures had been implemented. This was to analyze the collective information of EMF interference by minimum and maximum field strength readings.
As a certified testing company, PowerQ assisted the JV main contractor to conduct a crucial testing by pressuring the entire building like a balloon. The purpose of the ATT is to provide an indication if the Civil Defense Shelter and all its mechanical penetrations and closure devices are airtight against the penetration of external air.
One of the most challenging parts of the work performed by the construction team was sealing the gaps covering thousand of square meters of surface area including all the penetrations for utilities, humans and train access throughout the tunnel. This test allowed for easy detection of leaks from Blast Doors, Blast Valves Sleeves/Frames, Protective/Hardened Structures, Sealing Devices etc.
The entire volume 4-storey structure of more than 10,000 sq m was pressurised using a fan with calibrated venturi for measurement of flow. The flow and pressure were monitored with data loggers and digital instrumentation specially configured for the test. Hundreds of meters of sensor tubing were operated and the pressure drop was compensated by applying correction factors in loggers placed on various levels.
PowerQ conducted IOPT and ATT tests within the protected bounds of the Concourse, Platform and Under-platform Levels. The test was witnessed by authorities and had achieved its criteria at the first attempt. This was a results of extensive preparation, planning and coordination works done by hundreds of staff. Passing this milestone test allowed the European and Local JV main contractor to proceed with the construction process.
PowerQ had conducted similar tests for facilities such as; Isolation and OT rooms in hospitals, Blast proof rooms in oil rigs, FM200/CO2, Pressurised Room in data centres and BSL negative pressurised rooms in animal holding facilities/Vivariums and BSL labs.
The E-House contractor had installed HVAC packages on E-House and was concerned about high vibration level before the handover of the system. SPL had commissioned PowerQ to perform vibration measurement at Compressor and AHU and compare against benchmarks. PowerQ has to advise practical solutions to mitigate the impending problem.
Our engineers reviewed the installation drawing, alignment and factory report. We conducted vibration verification measurement on AHU, Chiller Compressor and Wall Mounted Condenser Axial Fans at the following locations:
The measurement result was used to mitigate the excessive vibration levels. This helped to avoid any failures of critical system while the vessel is moored and performing offshore production.
PowerQ was part of the Commissioning Team for Integrated Luxury Resort, Singapore project. This integrated resort is located in Central Singapore.
We had performed the mechanical T&C works to the MBS representative's satisfaction.
Post completion: We are continuously providing services to client to optimize their systems' performances.
Since August 2009, PowerQ has been involved in HVAC Testing and Commissioning in the following areas:
PowerQ had provided calibrated instruments and experience team of Engineers, Project/Document Controller and Technicians to test thousands of equipment. We had performed T&C of more than 1000 powered equipment comprising of life safety system; such as staircase pressurization, exhaust ventilation, IAQ system for casino, AHU and FCU system for hotels, casino and retail area. PowerQ was part of the commissioning team lead by MBS and its consultants.
The fine-tuning of T&C work continued till early year 2011. PowerQ is ensuring to provide a comfortable, safe and efficient facility.
AST is a 43-levels Grade A office building in Marina Bay area.
PowerQ provided Third Party Commissioning Consultancy services for MEP system comprising of HV system, Emergency Generator system, ACMV System, Fire Protection, Alarm System and Integrated Building Automation system. We had performed Verification and Function Performance, and Integration Test of the systems and produced Commissioning report.