Introduction to Implosive Connectors

Transcription

1 Introduction to Implosive Connectors 9 June

2 VP metall AS VP metall is situated in Raufoss Industrial Park, where you find the leading know-how in metallurgy and machining technology in Norway. 2

3 VP metall AS Activities: Production of Implosive Connectors Machining of: Aluminium Copper Brass Steel Hot forging 500 ton press Designing and construction of tools 3

4 VP metall AS Activities cont.: Punching and bending Presses up to 100 tons Designing and construction of tools CNC-machining Unisign, r/min, 52 tools, vertical mandrel, 4 axes MAZAK H 400, r/min, 30 tools, horizontal mandrel Mazak QT 250, drill/mill 12 tools, 4 axes Machining and assembly of automotive parts for SAAB 4

5 History implosive fittings Development. Cooperation between RA NVE, FFI and SINTEF 1968 Plastic explosives on steel First installation, NVE, 2 detonations 1970 Split steel tube 1 detonation joints for FerAl conductors, (1RA) RA (Norway only) Short type RA (Skandinavia) Profiled tubes, spiral RA (Dead end / jumper terminal) 2000 VP metall AS buys the product and the rights connected to it, from Raufoss 5

6 Implosive Connectors Implosive Connectors utilize the energy in a small implosive charge to compress a metal sleeve over conductor or wire. The pressure is applied instantaneously (1/ sec.) and the compression of the sleeve and cable is performed with a high degree of accuracy. 6

7 Implosive connectors include: full tension joints dead-ends jumper terminals repair sleeves full tension repair joints non-tension sleeves compression rings miscellaneous other fittings The Connectors can be used on dry conductor, fully greased aluminium alloy conductors and ACSR conductors with greased steel core. Connector components have been standardized to fit all common conductor types. 7

8 Implosive connectors for: Al. conductors from 50mm 2 till 1584 mm 2 FeAl conductors from 50 6/1 till LOMVI (1 detonation) Special conductors (2 detonations) Fjord crossings Steel conductors from 39 mm 2 till 900 mm 2 (Greenland) 8

9 The system provides: Consistant high quality Optimum compression Only radial deformation Reduced installation time Less total installed cost Faster stringing With this system buying, using, maintaining, storage and transportation of hydraulic presses or other compression tools is unnecessary! 9

10 Dead-end for ACSR conductor 1 of 2 10

11 Dead-end for ACSR conductor Dead-end with coil ACSR conductor PVC hose Implosive charge 2 of 2 Al tube with connector pad 11

12 Full tension repair joint for ACSR conductor 1 of 2 12

13 Full tension repair joint for ACSR conductor Steel tube with coil ACSR conductor Implosive charge Solid bolt PVC hose Aluminium tube 2 of 2 13

14 Full tension repair joints 14

15 Accessories REPAIR SLEEVES Repair sleeves restores the conductivity of a conductor with one or more broken strands. The implosive charge is mounted on one half of the sleeve and is taped together before compression. 15

16 Accessories COMPRESSION RINGS Compression rings are made for use in handling and sleeving large conductors and special conductors with aluminium alloy strands. They will make the installation work a lot easier. 16

17 Other areas of use Implosive Connectors may also be used for other purposes. As shown on the next page, Implosive Connectors are used in connecting steel wires between two bridgeheads. Here at the construction of the bridge Höga Kusten on E4 north of Stockholm, Sweden. 17

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19 Transition joint (ex. Between Al and ACSR conductor) 19

20 Testing and quality assuranse: Production VP Metall is certified to meet the requirements in of NS-EN ISO 9001: 2000, and NS-EN ISO 14001: 2004 The implosives connectors are approved for -marking by PvTT. Each new type of Implosive Connectors are tested at Sintef. (Trondheim, Norway) 20

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24 - certificate 24

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26 Safety: Wooden boxes for transportation approved by DNV Basis for approval: Drop-test Fall from 25 meters with 3 stk. Curlew connectors, repeated 7 times. CONCLUSION: Deformed connectors, but no detonation of explosives. Hazard-test Detonation test under storage. CONCLUSION: Classification: 1.2 D 1: Mass explosion in one box. 2: No mass explosion in other boxes nearby (no transmission of the detonation). 3: The explosives burned without detonation. 26

27 Regulation regarding transportation: Each company dealing with Implosive Connectors must be updated on local regulation regarding transportation From VP Metall to our customer: Dangerous goods ADR transport Transportation are carried out by Multisped AS, who have a lot of knowledge about transporting explosives VP Metall s responsibility ends when the goods arrive at the customer Regulations in Norway For transportation and handling less then 20 kg netto explosives: Car: do not transport explosives in the passenger area No requirement regarding marking of the car 27

28 Storage: Each company dealing with Implosive Connectors must be updated on local regulation regarding storage Local regulations In Norway, permission for storage up to 250 kg are given by local authority s. Requirement regarding personnel who handles the goods: Training and knowledge about handling and storage. 28

29 ONGOING PROJECTS FOR STATNETT VP metall provides joints, pulling grips, dead ends and jumper terminals for these projects: Sauda Liastølen Sima Samnanger Skogfoss - Varangerbotn 29

30 Changing old joints Through several years Statnett has replaced old non-implosive joints with implosive repair joints. Including also dead ends and jumper terminals. Repair dead ends, repair sleeves and other special solutions. Customer s request our challenge! 30

31 Marking on each joint: - Cat.no - Production month and year - CE-no 31

32 Building transmission lines over 32

33 a Norwegian Fjord 33

34 using Dead-ends 34

35 Pictures from changing Dead Ends at Sognefjorden Lenght across the fjord appr meters Break load at 90 tons 35

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