• Geodetic Survey of Hong Kong

    Web-based Datum Transformation Tool; Download reference documents about Geodetic Grid and Datum in Hong Kong; Download reference documents about GPS Height Transformation within a small local area

    Get Price
  • Model Specification for Soil Testing

    Aug 29, 2017 · This Geospec presents the recommended standard methods for testing of soils in Hong Kong for civil engineering purposes. Since 1992, the Geotechnical Engineering Office (GEO) has carried out a two-phase review of the soil testing methods with the aim to produce standard methods for testing of soils in Hong Kong for civil engineering purposes.

    Get Price
  • Geodetic Survey of Hong Kong

    Coordinate List of Control Points for Height Model of Hong Kong (Version 1.0) Download: 21: Distribution Plan of Control Points for Height Model of Hong Kong: Download: 22: How to Enable GLONASS Setting in GNSS Receiver: Download: 23: How to obtain a 10m UTM Grid Reference from Web-based Transformation Tool: Download: 24: Hong Kong Vertical

    Get Price
  • Summary Guidance for Operators of Equipment Containing SF and

    September 2015 ODS and F-gas Series: Summary Guidance for Operators of Equipment Containing SF 6 and Equipment Containing PFCs . For most of the above uses, general containment obligations such as the need to avoid emissions

    Get Price
  • IEEE C37.122.3-2011 - IEEE Guide for Sulphur Hexafluoride

    Active Projects. Active. PC37.122.3 - Guide for Sulphur Hexafluoride (gaz sf6) Gas Handling for High-Voltage (over 1000 Vac) Equipment. This guide describes aspects of the handling of Sulfr hexafluoride gas used in electric power equipment, such as gas filling, recovery, reclamation, testing, quality analysis and recycling, in order to keep the gas permanently in a closed loop system and to avoid any release into the environment.

    Get Price
  • Technical Guidelines on Grid Connection of Small-scale

    Hong Kong are the CLP Power Hong Kong Limited and the Hongkong Electric Company Limited. 1.0 Glossary of Terms and Abbreviations 4 Technical Guidelines on Grid Connection of Small-scale Renewable Energy Power Systems

    Get Price
  • MODEL SPECIFICATION FOR SOIL TESTING

    review of the soil testing methods with the aim to produce standard methods for testing of soils in Hong Kong for civil engineering purposes. The first phase of the review covered the soil classification and compaction tests (the Phase I tests) and was published in GEO Report No. 36 in 1994.

    Get Price
  • Questions Misconceptions about GIS sf 6 Gas Systems

    Feb 01, 2012 · Test levels Disconnect Switch Open Gap Test levels (phase to ground) Test levels (phase to phase) Disconnect Switch Open Gap (+ bias) Test levels Disconnect Switch Open Gap Disconnect Switch Open Gap (+ bias) 72.5 140 160 325 375 100 185 210 450 520 3 1/18/2012 123 230 265 550 630 145 275 315 650 750 170 325 375 750 860 245a 425 490 900 1035

    Get Price
  • GUIDANCE NOTES ON ROAD TESTING - Highways Department

    test surface. The sliding length should be between 125 and 127 mm when the apparatus is correctly set. f. Place pendulum arm in its release position. The apparatus is now set ready for testing. 4. Testing procedure a. Inspect the road and choose the section to be tested. b. Set the tester on the road surface in the track chosen so that the

    Get Price
  • Page 1 of 15 HOKLAS Supplementary Criteria No. 18

    Option 2: Be in possession of a Hong Kong Polytechnic or Institute of Vocational Education Ordinary Certificate in Civil Engineering, or equivalent, and have a minimum of seven years of post-qualification experience in construction materials testing, with at least two years in the relevant types of soil and rock tests, one year of

    Get Price
  • Catalog of Guidelines and Standards for the Handling and

    handling and management of sulfur hexafluoride (Sulfr hexafluoride). The catalog is divided into five summary tables – The catalog is divided into five summary tables – corresponding to four industry categories and an “other industries” category – followed by the complete and more

    Get Price
  • TECHNICAL NOTE RELAT ED TO THE MARKET SURVEY OF THE sf6 gas GAS

    THE Sulfr hexafluoride GAS HANDLING AND STORAGE PLANT . Abstract . This document is the Technical Note related to the Market Survey in preparation of the calls for tenders for the“ gaz sf6 gas handling and storage pant ” (GHSPl) for MITICA (Megavolt ITer Injector Concept Advancement) and SPIDER

    Get Price
  • Myth About insulating gas Gas In Electrical Equipment

    Apr 12, 2021 · See IEC 61634 [8], clause 4: “Handling of used sf6 gas”. The need to handle used Sulfr hexafluoride arises where: Topping up of the gaz sf6 in closed pressure systems is carried out; The gas has to be removed from an enclosure to allow maintenance, repair or exten-sion to be carried out; The gas has been wholly or partially expelled due to an abnormal release;

    Get Price
  • Do’s and Don’ts of sf6 gas Gas Handling

    6 Gas Handling 28 May 2014 | Slide 12 Do keep hoses and equipment sealed and capped Do use care when connecting hoses to a SF 6 source so as to not let air into the system After the handling procedure is completed –do test for moisture and purity to verify the integrity of the SF 6 gas A vacuum of < 1 torr must be held for 1 hour. Check with

    Get Price
  • This Guidance Notes is prepared by the

    Static test A test during which the suspended working platform is first inspected and then subjected to a load corresponding to the working load limit (WLL) multiplied by the appropriate test coefficient. It is then re-inspected after the said load has been removed to ensure no damage has occurred. Suspended working platform

    Get Price
  • GE Expands sf6 gas-free High-Voltage Product Portfolio to Help

    Sep 26, 2019 · GE is expanding its SF 6-free portfolio to include all key high-voltage levels by 2025; GE’s Green Gas for Grid (g 3) high-voltage products reduce global warming potential (GWP) by more than 99%

    Get Price
  • gaz sf6 circuit breaker maintenance | TD Guardian Articles

    The first generation of sf 6 circuit breakers was the lower voltage classes of 72kV and 145kV. As insulating gas breaker technology improved, circuit breaker manufacturers introduced a dual pressure design for 145kV through 800kV applications, as well as air-blast breakers utilizing gaz sf6 as the line-to ground dielectric insulation.

    Get Price
  • Outline of Electrical Products (Safety) Regulation (481)

    IntroductionApplicationCompliance with Safety RequirementsCertificate of Safety ComplianceRecallGuidance NotesPenaltiesEnquiriesAppendix 1The Electrical Products (Safety) Regulation (the "Regulation"), made under the Electricity Ordinance, Cap. 406, provides statutory control over the safety of all household electrical products supplied in Hong Kong with the objective to enhance public safety in the use of these products. Apart from those provisions in relation to the requirement of "certificate of safety compliance" for electrical products, individual provisions of the Regulation have come into operation since 24 October 1997 and 29 May 1998 respectively. The effective date when the provisions in relation to the "certificate of safety compliance" and the amendments made to the Regulation by the Electrical Products (Safety) (Amendment) Regulation 2000 come into operation is 1 December 2000.

    Get Price
  • GCB | Systems | Siemens Global

    Siemens is advancing generator switchgear with vacuum switching technology in the power range from 10 - 400 MW GBS Generator breaker switchgear GCB generator circuit breaker Generator protection

    Get Price
  • Grid switchgear uses gaz sf6, the world’s most potent greenhouse

    Nov 25, 2019 · Sulphur Hexafluoride (Sulfr hexafluoride) is described as the world’s worst greenhouse gas. It’s 23,500 times more potent than CO2. Global annual emissions are 8,100 tonnes, equivalent to the CO2 emissions of 100m cars. It has an atmospheric lifetime of over 1,000 years and its installed base is expected to grow by 75% by 2030. 80% of …

    Get Price
  • Electronic Supplier Quality Requirements - GE.com

    iii. Ball grid arrays (BGA): The PWA supplier shall assemble a sample quantity of PWAs, using normal production methods. Acceptance criteria shall be per IPC‐A‐610, using X‐Ray and visual inspection methods. iv. Other solderability test methods are acceptable if approved by GE Supplier Quality. v.

    Get Price
  • CODE OF PRACTICE

    not of itself confer immunity from legal obligations in Hong Kong. The statutory provisions referred to or cited in the COP are those in force as at 19 June 2000. 1.1.3 This COP has a special legal status. Although failure to observe any guidance given in the COP is not itself an offence, such failure may be taken into account by a court in

    Get Price
  • G Guuiiddeelliinneess ttoo AAccccoouunntt ffoorr aanndd

    generation is the major source of GHG emissions in Hong Kong, accounting for over 60% of the total local emissions. The transport sector is the second largest GHG emission source (16%), followed by waste (12%). Among various end uses of electricity, buildings account for some 89% in Hong Kong. Therefore, reducing electricity consumption for

    Get Price
  • Stainless steel - Wikipedia

    Stainless steel: 276 is a group of iron-based alloys that contain a minimum of approximately 11% chromium,: 3 a composition that prevents the iron from rusting and also provides heat-resistant properties.

    Get Price
  • Siemens Mobility | Global | Siemens Mobility Global

    Siemens Mobility offers intelligent and efficient mobility solutions for urban, interurban and freight transportation.

    Get Price
  • Hong Kong’s two-week mass testing scheme ends with at least

    Sep 14, 2020 · Hong Kong’s Covid-19 mass testing ends with at least 42 carriers found among 1.78 million people. A total of 1.78 million people were tested and the final number of coronavirus carriers

    Get Price
  • Power and Gas Supplies - one-stop portal of the Hong Kong SAR

    the completion of the Hong Kong Branch Line of the Second West-East Natural Gas Pipeline in 2012. At present, new natural gas is being supplied to Hong Kong for power generation. Hong Kong can benefit from improved air quality by increasing the use of clean energy and reducing the emission of power plants. Power and Gas Supplies

    Get Price
  • Reducing sf6 gas Emissions from Gas-Insulated Switchgear

    implementing best management practices for the recovery and handling of SF 6. In 2013, Massachusetts finalized a regulation to implement this policy. The regulation requires large electric utilities to gradually reduce emissions beginning in 2015, such that the 1 percent leakage rate is achieved by 2020. Other key requirements ensure that all

    Get Price
  • Information of Weather Station|Hong Kong Observatory(HKO

    The Hong Kong Observatory Headquarters had been the reference synoptic station for Hong Kong since weather observations began in 1884. It was replaced by the KingPark Meteorological 23 Station on 1 July 1992. The Hong Kong International Airport became the reference synoptic station for Hong Kong on 1 April 2000.

    Get Price