OJSC Vyborg Shipyard - EO

Contents

Contents

Name

Sheet No.

Note

1. Cover Sheet

2. Contents

3. Approval Sheet

4. List of main sets of working drawings

POS and RP grades

5. General Data

5. Explanation of the project

6. Verification calculations

7. Equipment and Material Specification

Drawings:

Explanation of the project

1. Common part.

1.1 The project was developed on the basis of the terms of reference and initial data of OJSC Vyborg Shipbuilding Plant.

1.2 The project solves:

- reconstruction of the existing main distribution board of the cleaning area and

coloring of sections

- power supply of the section lighting board

1.3 Design uses:

- terms of reference and initial data of OJSC VSZ dated August 2005.

- survey materials by specialists of NPO Irbis LLC in August

2005.

1.4 The project was developed in accordance with the requirements of the following regulatory documents:

- PUE, ed. 7 Electrical Installation Rules.

- SNiP 3.05.0685 Electrical devices.

- Guidelines for calculation of DC currents and selection of electrical equipment

RD15334.0-20.52798.

1.5 Connection of existing consumers of section cleaning and painting area and designed lighting system is provided at ~ 380/220V voltage with TNCS grounding system. The total estimated power consumption of the lighting system is

- 18.3kW, vol.

- operating - 16.4kW at coseta= 0.85

- emergency - 1.875kW at coseta= 0.85

2. Basic solutions.

2.1 Existing consumers of the section cleaning and painting area with the total installed power - 523.7kW are connected from two distribution points of type PR9000. Each distribution point of PR9000 receives food from RU0.4kV FTP-2 on one existing compound cable line of ASB3h185 brand 115 m long executed by cables and KG+1H35 +1x35 225 m long that corresponds to the III category of reliability according to PUE.

2.2 In accordance with the customer's task, the existing distribution points PR9000 are dismantled and replaced by the main distribution board of GRF assembled from boards of type PR11712154U3 - 2pc and PR11712254U3 - 2pc.

2.3 The designed GRF is installed on the metal foundation frame outside the structure in a place free of equipment and has the design of the IP54 shell.

2.4 As the main grounding bus of the GZSh of the structure, the use of RE-buses of the distribution boards of the GRSh is provided. Panel housings, foundation frame, PE-busbar of GRSCH are re-grounded to natural grounding electrodes - steel structures of railway/concrete foundations of structural columns. The total resistance of RE-busbar RE-grounding devices of the GRSCH shall not exceed 30 ohms.

2.5 Connection of CH lighting board is performed by two cable lines C1 and C2 made by cable of VBG5x10mm2 grade. Cables are laid in steel pipes Øn = 42.3mm (TV32) along the external wall of the structure with attachment to the columns through embedded parts.

2.6 The existing consumers are reconnected from the dismantled raspredpunkt on new DBU according to settlement schemes on sheets ES1, ES-2. Existing cables are used.

2.7 For electricity metering of the cleaning consumed by the site and colourings of sections in RU0.4kV in FTP2 on the departing lines to DBU are established counters of active and reactive energy like "Mercury 230 AR" an accuracy class at measurement of the active power 1, reactive-2. The SH counter cabinet is installed in the switchgear room to the free space from the equipment. Current transformers of TSHP0.66 300/5 cl. accuracy 1 are installed in the outgoing line panel in place.

- RSP11 lamps of the top lighting - a flexible cable of KG3h1.5mm2 brand

- LSPO3 lamps of side lighting - VVGng3h1.5mm2 brand cable

2.10 For convenience of maintenance of top lighting fixtures, their attachment is provided on rotary brackets made from pipe station Øn = 26.8mm with lamp suspension on the chain. For maintenance, the lamp is transferred to the bridge site. Maintenance of side lamps is provided with a demountable mobile tower-tour type VRPS01 taken into account by the project specification. Maintenance of top lighting fixtures is also possible using the tower.

2.11 For connection of portable searchlights, a 220V socket network with four explosion-proof 250V, 16A wall sockets with 1P + N + PE contacts is provided (Spanish by explosion protection EExdeIICT6) installed at a height of 1 m from the floor on steel structures of the structure walls. Connection of searchlights is carried out by a flexible cable of KG brand 3kh2,5mm2 20 m long. To ensure the electrical safety of personnel, the socket network is protected by a DS641 type differential machine with IH.P = 16A, IZ = 30mA.

2.12 For connection of portable lamps NRP01, 12V socket networks with six explosion-proof wall sockets 24V, 16A with two contacts are provided (Fig. by explosion protection EExdeIICT6) installed at a height of 1 m from the floor on steel structures of the structure walls. Power supply of socket networks is provided through step-down transformers of OSO0.25 220/12V type installed in metal cabinets of AE1033 type IP66 on the external walls of the structure. Wiring from boxes with transformers to wall sockets is performed by a cable of BVGng 2x6mm2 grade with protection from mechanical damages up to a height of 2.5 m from the floor with a metal pipe.