High Voltage Substation (AIS / GIS)

Technical Description

High Voltage Substations (AIS / GIS) SIEMENS Civil Scope of Work(for submittal to CUSTOMER)This Page is For internal Information onlyPlease delete this page before document submittal to CUSTOMER

Purpose of Document:This document describes the general SIEMENS scope of work, the key features, the assumptions, the inclusions, the exclusions, and the pre-requisites of the SIEMENS civil scope of work for an AIS / GIS High Voltage Substation.

This document is a template document, which was developed out of Substation experiences and project lessons learnt.

The descriptions contained in this document shall be considered as recommendations as well as minimum requirements.

The main purpose of this document shall be to limit various risks for SIEMENS at project tender phase as well as at project execution phase.

This document shall form part of the contract agreement between CUSTOMER and SIEMENS.

This document shall assist the SIEMENS Civil Engineer to reduce SIEMENS civil engineering / civil management efforts. Beyond this document shall improve the working process as well as the quality in documentation.

This document does not reflect project specific CUSTOMER requirements. Therefore it always requires a review, delta-engineering and revision in respect to CUSTOMER specifications and project specific requirements.User Instruction:

All pages of this document shall be carefully reviewed and revised by SIEMENS Civil Engineer according to CUSTOMER specification and project specific requirements. At least the yellow marked test passages needs to be revised, if necessary. Various scope of work alternatives are described in this document. The most appropriate alternative shall be selected and the remaining alternatives, which are not valid for the specific project, shall be deleted out of this document.

Please note, that not all Clauses of this document may be applicable for the specific project. Clauses which are not valid for the specific project shall be deleted out of this document.After completion of the document revision, please do not forget to update page 4 Table of Content.

After document revision, this document shall be submitted together with SIEMENS bid to the CUSTOMER.

Please delete this page before document submittal to CUSTOMER

ReferencesReference Number

Siemens Reference

Siemens Document Number

Customer Reference

Document StatusReleased by PLM SYS (Civil Works)

ControlNameDept.TelephoneDateSignature

AuthorD.SeidelbergerET TS PLM+49 9131 7-34369May 2014Seidelberger

ResponsibleD.SeidelbergerET TS PLM+49 9131 7-34369May 2014Seidelberger

CheckedB. ElsnerET TS P EN

CS 4+49 9131 7-32301July 2014Elsner

F. WeberET TS P EN

CS 1 2 +49 9131 7-33334July 2014Weber

F. SchirrmacherET TS PLM+49 9131 7-32076July 2014Schirrmacher

M. WeihkopfET TS PLM+49 9131 7-32128July 2014Weihkopf

ReleasedD.SeidelbergerET TS PLM+49 9131 7-34369July 2014Seidelberger

DistributionFormatCopies

Siemens AGET TS P EN CS4Electronic (.doc)1

Siemens AGET TS PLMElectronic (.doc)1

Special Remarks / Document Classification

Document Classification:

Special Remarks:

Recipient of this document shall be the Customer if civil design and construction is in SIEMENS scope of work. This document is not intended for submittal to Architect & Engineer and Civil Contractor.

Revision History

Rev.Date of IssueRevised byReason / Nature of Revision / Pages revisedSignature

00D.SeidelbergerStandard TemplateSeidelberger

Document Templates used:

Document Title / NumberRev.Dated

140806_AISGIS_CivilDescription_toCustomer_Rev0_PLM.doc0006.08.2014

Table of Content

51Introduction

2Clarification of Terms53Civil Scope of Works54References, Codes, Standards and Specifications55Site65.1General65.2Temporary Site Installation65.3Site Clearance75.4Setting Out and Survey75.5Topographical Survey75.6Geotechnical Report85.7Site Handover105.8Earthworks105.9Miscellaneous116Buildings116.1General116.2GIS Switchgear Building126.3Control Building147Building Room Schedule177.1Room Finishing177.2Room Furniture and Facility197.3Doors198Outdoor Equipment Foundations208.1Transformer Foundation(s)208.2Other Electrical Equipment Foundations228.2.1Anchor Bolts228.3Electrical Equipment Support Steel Structures (Building Indoor)229Civil Site Infrastructure229.1Cable Raceway Structures229.2Roads239.3Perimeter Fencing / Equipment Fencing249.4Landscaping (Final Station Surfacing / Insulating Gravel)249.5Storm Water Drainage249.6Water Supply System249.7Sewage Water Drainage2510Building Services2610.1Building Lightning Protection System2610.2Small Power & Lighting Systems (Normal & Emergency)2610.2.1General2610.2.2Indoor Lighting & Small Power System2610.2.3Outdoor Lighting & Small Power Systems2710.2.4Emergency Lighting System2710.3Fire Protection System2710.4HVAC (Heating Ventilation Air Conditioning System)2710.5Surveillance Systems2811Grounding System2811.1Outdoor Grounding Grid2811.2Building Foundation Grounding2811.3Indoor Grounding System2812Permitting2813Civil Engineering & Design29

1 Introduction

This document describes the SIEMENS civil design and civil construction scope of work, the key features, the assumptions, the inclusions, the exclusions, and the pre-requisites of the SIEMENS civil scope of work for an AIS / GIS High Voltage Substation.This document shall form part of the contract agreement between CUSTOMER and SIEMENS.

2 Clarification of Terms

For the purposes of this document the following terms shall have the following meanings:

AIS:

Air Insulated Substation

GIS:

Gas Insulated Substation

CUSTOMER:Owner

SIEMENS:Siemens AG / Ltd.

3 Civil Scope of Works

The civil scope of works to be provided by SIEMENS for the Substation includes the following:

Temporary Site Installation (refer to Clause 5.2)

Site Clearance (refer to Clause 5.3) Topographical Survey (if required) (refer to Clause 5.5)

Soil Investigation (if required) (refer to Clause 5.6) Bulk Earthworks (refer to Clause 5.8) Construction of Building(s) (refer to Clause 6)

Construction of Outdoor Equipment Foundations (refer to Clause 8)

Construction of Civil Site Infrastructures (refer to Clause 9) Installation & Commissioning of Building Services (refer to Clause 10) Installation of Grounding System (refer to Clause 11) Civil Construction Permitting (refer to Clause 12)

Civil Engineering & Design (architectural / civil / structural / mechanical / electrical) (refer to Clause 13)4 References, Codes, Standards and Specifications

All civil design and civil construction shall comply with the specific requirements stipulated in:

CUSTOMER specification This document and further project specific requirements for civil design (if any) to be provided by SIEMENS at design stage The statutory requirements of the international, national, state and local authorities and Building Codes having jurisdiction for the specific project (= Codes & Standards specified in CUSTOMER specification)Unless otherwise stated, the latest revisions of the Codes & Standards shall be met in the design and construction.5 Site

5.1 General

The civil construction Site is limited to the area as indicated in drawing no. , and this area is measured m by m. Any civil works beyond this area are not included in SIEMENS civil scope of work except for: E.g. access road to Site with a length of m

5.2 Temporary Site Installation

SIEMENS will provide temporary Site installations & facilities and temporary storage areas as required for SIEMENS as well as SIEMENS civil subcontractors. This scope of works will include a Site health & safety management.Temporary Site offices will be made available for the use of CUSTOMER, if specified in CUSTOMER specification, and maintained for the duration of the Site works. SIEMENS temporary Site installation & facilities and storage areas shall be established on an area located next to the Site. This area shall be provided by CUSTOMER free of charge and shall be large enough in size.

The Site establishment area will be secured by SIEMENS as deemed required for the Site location.Temporary roads within the Site will be provided by SIEMENS as required by SIEMENS and SIEMENS subcontractors.

Public road improvements outside the Site boundary are not included in SIEMENS civil scope of work, but temporary traffic signs will be installed as required at the crossroad to the public road. These traffic signs shall allow for safe exit from the Site as well as for easy access to the Site by construction traffic and for the material deliveries. Alternative A:It is assumed by SIEMENS that CUSTOMER will provide temporary services & supplies for SIEMENS works at the Site well in advance of SIEMENS Site works (the consumptions cost being supported by SIEMENS), as following:

Temporary water supply with terminal point at Site boundary incl. sufficient volume of water per day (SIEMENS water consumption and requirements to be communicated to CUSTOMER at beginning of project execution)

Temporary power supply with terminal point at Site boundary incl. sufficient power supply (SIEMENS power consumption and requirements to be communicated to CUSTOMER at beginning of project execution)

Temporary sewage drainage with terminal point at Site boundary Temporary storm water drainage with terminal point at Site boundary Temporary telephone line connection at Site boundaryAlternative B:It is assumed by SIEMENS that public / municipal services & supplies are not available at the Site boundary or adjacent to the Site.Therefore, SIEMENS civil scope of work includes the following:

5.3 Site Clearance

If specified in CUSTOMER specification, SIEMENS would clear the site from top soil and small plant and vegetation like bushes and grass, if required. Tree cutting and all related permitting would be not included in SIEMENS scope of work. It has been assumed by SIEMENS that the Site is clear of any below and above ground structures, services, obstacles and archaeological findings. If not specified otherwise in CUSTOMER specification, any detection of existing underground structures, services, obstacles and other findings shall be done by CUSTOMER, if required. The existing above and below ground structures, obstacles and services located at Site shall be disconnected, re-routed, demolished and removed by CUSTOMER before the Site is handed over to SIEMENS. All related earthworks including backfilling with suitable material (non-cohesive material installed in layers not exceeding 150 mm and compaction to 95% Max Dry Density (Mod Proctor Density)) shall be done by CUSTOMER before the Site is handed over to SIEMENS.

If not specified otherwise in CUSTOMER specification, the following assumptions, exclusions and pre-requisites are considered in SIEMENS scope of work: Provisions for working alongside existing underground facilities such as gas pipes, water pipes, electrical cables, etc. are not included in SIEMENS scope of work. Re-routing of such facilities as well as for roads including re-routing on a temporary basis are not included in SIEMENS scope of work.

It is assumed that the Site is neither a wetland nor a water-course or environmentally sensitive area or a flood endangered area. No measures are included in SIEMENS scope of work for such kind of areas.

Diversion of existing creeks, rivers and streams at Site or adjacent to Site is not included in SIEMENS scope of work.

Diversion of existing roads and pathways at SITE or adjacent to SITE is not included in SIEMENS scope of work.

Protection measures at existing hillside slopes (located adjacent or next to Site, if any) against avalanches, rock fall, storm water flooding and soil erosion control are not included in SIEMENS scope of work.

Protection of existing under and above ground services crossing the Site and Site access road is not included in SIEMENS scope of work.

5.4 Setting Out and Survey

The CUSTOMER shall provide the setting out of CUSTOMERs property and Site corners to SIEMENS at beginning of project execution. The Site survey map shall indicate all corners of the site including co-ordinates (Gau-Krueger or equivalent) and datum level above e.g. Mean Sea Level MSL or equivalent).

Each corner of the Site shall be marked by suitable property markers and properly secured in position by CUSTOMER.

Minimum three official bench marks (properly secured) located at the Site shall be provided by CUSTOMER to SIEMENS at Site Hand Over.

5.5 Topographical Survey

Alternative A:A topographical survey map has been provided by CUSTOMER to SIEMENS at SIEMENS bid stage. This map includes following information: Site Co-ordinates (Gau-Krueger or equivalent) and datum levels (above e.g. Mean Sea Level MSL or equivalent)

Area of survey: e.g. Site plus a strip of m beyond the Site boundary, along access road Grid spacing of survey about e.g. 5 meter or less

Contour lines with the contour intervals of 0.50 m or less

Location map (Site Plan) indicating the Site and foreseen access road (if applicable)

Topographical survey map in AUTOCAD format (latest edition)Out of this topographical survey map the bulk earthworks for the Substation are interpreted by SIEMENS and are used as basis for SIEMENS scope of work for earthworks, as follows: Final yard level is defined to be m datum level (Mean Sea Level MSL)

Bulk Earthworks (cut) to be maximum m3

Bulk Earthworks (fill) to be maximum m3In case SIEMENS topographical survey (to be done at project execution) indicates discrepancies to the CUSTOMER provided topographical survey and indicates the necessity for additional bulk earthworks (cut & fill) as assumed above, then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto CUSTOMER.

Alternative B:A topographical survey was undertaken by SIEMENS at SIEMENS bid stage.

Out of this topographical survey map the bulk earthworks for the Substation are interpreted by SIEMENS and are used as basis for SIEMENS scope of work for earthworks, as follows: Final yard level is defined to be m datum level (Mean Sea Level MSL)

Bulk Earthworks (cut) to be maximum m3

Bulk Earthworks (fill) to be maximum m3

Alternative C:No topographical survey was provided by CUSTOMER to SIEMENS at SIEMENS bid stage.Therefore, the following assumptions are made by SIEMENS and are used as basis for SIEMENS scope of works for earthworks:

Bulk Earthworks (cut) to be maximum m3

Bulk Earthworks (fill) to be maximum m3

In case SIEMENS topographical survey (to be done at project execution) indicates the necessity for shoulders, embankment / slope protection or retaining walls and additional quantities for cut and fills, then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto the CUSTOMER.5.6 Geotechnical Report

Alternative A:A geotechnical report was provided by CUSTOMER to SIEMENS at SIEMENS bid stage. This report includes following information:

Out of this geotechnical report the soil conditions are interpreted by SIEMENS as follows and are used as basis for SIEMENS civil design & construction scope or work:

Type of Foundation: Shallow / Piled Foundation

Allowable Soil Bearing Pressure = kN/m

Max Settlements less than cm

Ground water table is minimum m below grading level / final yard level

In case SIEMENS soil investigation (to be done at project execution) indicates the necessity of special foundation measures due to soft spots or loose pockets, undesirable soil layer, caves or similar as but not limited to rock excavation, soil improvement, soil exchange, foundation anchorage, pile foundation or special arrangements, then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto CUSTOMER.

Alternative B:No geotechnical report was provided by CUSTOMER to SIEMENS at SIEMENS bid stage.

Therefore, the following soil conditions are assumed by SIEMENS and are used as basis for SIEMENS civil design & construction scope of work: Type of Foundation: Shallow Foundation

Non cohesive subsoil (medium dense sandy gravel; stiffness modulus E(s) = > 85MPa; shear strength () = 35)

Allowable Average Soil Bearing Pressure = 250 kN/m

Max Settlements less than 1,5 cm

No soft spots or loose pockets, undesirable soil layer, caves or similar are existing at the Site Ground water table is minimum 5 m below final natural ground elevation.

No contaminated ground water

No chemical attack by subsoil or ground water

No soil liquefaction

Natural ground is always stable for all construction vehicles

No existing below ground substructures / services, mines, explosives, chemicals, hazardous substances or objects, artificial materials located at the construction site

The Site is neither a wetland nor a water-course or environmentally sensitive area or a flood endangered area.

Retaining walls, vertical slope protection, shoring, planking, strutting and sheet pile walls are not required. Open pit excavations are considered as most reasonable method.

Site drainage is not required before construction site works commence

Frost depth 1,0 m below final yard level rock excavation is not required (neither weather rock nor solid rock)

all excavated material is suitable for structural backfill (non-cohesive soil material) without additional material treatment

no imported material is required neither for structural backfill nor for common backfill

surplus excavated material can be dumped off the Site

all soil material is clean and not contaminated

In case SIEMENS soil investigation (to be done at project execution) indicates the necessity of special foundation measures due to soft spots or loose pockets, swampy or wet areas, undesirable soil layer, caves or similar as but not limited to rock excavation, soil improvement, soil exchange, foundation anchorage, pile foundation or special arrangements, etc., then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto the CUSTOMER.Alternative C:Based on the borehole logs provided by CUSTOMER no reasonable and accurate interpretation of the existing subsoil conditions could be done by SIEMENS at bid stage because of following:

Example Borehole logs: Some contradiction between SPT values and soil descriptions

Example Borehole logs: Some soil descriptions of the borehole logs are missing

Example Essential soil data and soil investigation are missing like: e.g. chemical soil and water analysis, essential field and laboratory tests to establish physical and engineering properties, observation and evaluation of ground water levels (min / max / average), soundings, disturbed and undisturbed soil samples for visual examination and for carrying out laboratory tests on selected samples to determine the geotechnical engineering properties of the soil, natural moisture content, Atterberg limits, grain size distribution by sieving (particle size analysis), hydrometer analysis, proctor tests, bulk and dry density, void ratio, relative density, consolidation tests, swelling test (in case of swelling soils only), direct shear test at low shear velocity, tri-axial tests and interpretation of soil investigation including, but not limited to, recommendation on type of foundation for each building and structure, earthworks, etc.

Therefore, the following soil conditions are assumed by SIEMENS and are used as basis for SIEMENS civil design & construction scope of work:

Type of Foundation: Shallow Foundation

Non cohesive subsoil (medium dense sandy gravel; stiffness modulus E(s) = > 85MPa; shear strength () = 35)

Allowable Average Soil Bearing Pressure = 250 kN/m

Max Settlements less than 1,5 cm

No soft spots or loose pockets, undesirable soil layer, caves or similar are existing at the Site

Ground water table is minimum 5 m below final natural ground elevation.

No contaminated subsoil and ground water

No chemical attack by subsoil or ground water

No soil liquefaction

Natural ground is always stable for all construction vehicles

No existing below ground substructures / services, mines, explosives, chemicals, hazardous substances or objects, artificial materials located at the construction site

The Site is neither a wetland nor a water-course or environmentally sensitive area or a flood endangered area.

Retaining walls, vertical slope protection, shoring, planking, strutting and sheet pile walls are not required. Open pit excavations are considered as most reasonable method.

Excavated material can be used as structural backfill (no need for imported material)

Site drainage is not required before construction site works commence

Frost depth 1,0 m below final yard level

In case SIEMENS soil investigation (to be done at project execution) indicates the necessity of special foundation measures due to soft spots or loose pockets, swampy or wet areas, undesirable soil layer, caves or similar as but not limited to rock excavation, soil improvement, soil exchange, foundation anchorage, pile foundation or special arrangements, then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto the CUSTOMER.5.7 Site Handover

The Site shall be officially handed over by CUSTOMER to SIEMENS well in advance of SIEMENS Site works. An official Site Hand Over protocol to be provided by SIEMENS shall be developed and countersigned by both parties.

5.8 Earthworks

If neither specified in CUSTOMER specification nor defined elsewhere in SIEMENS documentation, the project Site elevation / level (e.g. altitude above Mean Sea Level or equivalent) will be chosen by SIEMENS at the beginning of the project execution. Site terracing may be chosen by SIEMENS in order to minimize bulk earth movements.Bulk earthworks as well as earthworks for the Station grounding grid shall be defined by the limits of the Site perimeter fence plus a 1.0 m wide strip beyond these limits.

Any handling of contaminated soil material is not included in SIEMENS scope of work.Excavations shall be performed using any method considered suitable and shall allow for the use of the plant and machinery best suited for the type of excavation and available at the location.

Retaining walls, vertical slope protection, embankment protection, shoring, planking, strutting and sheet pile walls are not included in SIEMENS tender. SIEMENS proposal includes open pit excavations with reasonable inclination.5.9 MiscellaneousSIEMENS scope of work includes following assumptions, exclusions and pre-requisites: The CUSTOMER owns and has full possession of the Site.

There shall be no restrictions, covenants, right of ways, etc., existing referring to the Site as well as to all access roadways to the Site.

There shall be no existing underground / overhead services on Site.

There shall be no mines, explosives, chemicals or other hazardous substances or objects, located on the Site or adjacent to the Site.

There shall be no interference with easements of existing underground and above ground services at the Site as well as along Site access road.

There shall be no environmental regulations and restrictions (e.g. restrictions on noise emission, dust emission, etc.), which demand special requirements neither during civil construction works nor during electrical installation and commissioning works.

There shall be no religious shrines, monuments, memorials or places of pilgrimage or worship, listed buildings, protected structures etc., located on or adjacent to the Site.

SIEMENS shall get free, direct and timely unlimited access to the Site.

SIEMENS shall have the exclusive use of the Site for the extent of the duration of the project.

Any development of adjacent areas to the Site shall not impede SIEMENS works.

SIEMENS will appoint the civil construction works and will have free choice of the civil construction contractor. 6 Buildings6.1 General

The buildings will be designed and constructed to provide a complete structure, weather-tight and structurally strong to withstand weight of equipment and service conditions.The buildings will be designed for all effected loads and for the stresses resulting from environmental conditions, the electrical & mechanical equipment operation and other applicable impacts.

All buildings shall be founded on shallow foundations (raft-, pad-, strip-foundations), if not otherwise recommended in the geotechnical report.

6.2 GIS Switchgear BuildingThe building will be a single/double story building (length m x width m x height m). The provided building type (steel building or concrete & brick building) will be according to CUSTOMER specification. The building will be constructed as described below, if not specified otherwise in CUSTOMER specification:

A) Building Substructure:

Steel reinforced concrete foundation(s) and slab (including full cable basement, part cable basement or cable tunnel if specified by CUSTOMER or required by SIEMENS)B) Building Type 1: Building Superstructure - Steel / Metal Building (applicable if specified in CUSTOMER specification): Steel structure (pre-manufactured and on-site assembled)

Roof:

Roof structure: Steel trusses with various bracings and roof purlins resting on steel columns Sloped roof system (double or mono pitched)

Cladding: standard cladding system (factory formed) made of insulated sandwich steel panel system or equivalent; commercial galvanized rolled steel sheets with maximum 0.50mm thickness; steel sheet coating: exterior sheet (front side) 25m PVDF paint (factory coated) / interior sheet (front side) 15m Polyester paint (factory coated) / standard RAL color as per manufacturers standard color range; panel profile: trapezoidal standard ribs; thermal insulation core: Polyurethane or equivalent for nonfire rated walls / Mineral Wool or equivalent for fire rated walls; overall coefficient of heat transfer 0,40 W/(mK); weighted sound reduction index of sandwich panel R(w) < 25dB; overall roof thickness / joint type/configuration / panel width and length: as per manufacturer's standard roof system; manufacturer: to be chosen by SIEMENS at project executionRoof panels will be as required by type of roof, span of sheets, and applicable loadings.Walls:

Cladding: standard cladding system (factory formed) made of insulated sandwich steel panel system; commercial galvanized rolled steel sheets with maximum 0.50mm thickness; steel sheet coating: exterior sheet (front side) 25m PVDF paint (factory coated) / interior sheet (front side) 15m Polyester paint (factory coated) / standard RAL color as per manufacturers standard color range; panel profile: trapezoidal standard ribs; thermal insulation core: Polyurethane or equivalent for nonfire rated walls / Mineral Wool or equivalent for fire rated walls; overall coefficient of heat transfer 0,40 W/(mK); weighted sound reduction index of sandwich panel R(w) < 25dB; overall wall thickness / joint type/configuration / panel width and length: as per manufacturer's standard wall system; manufacturer: to be chosen by SIEMENS at project execution

Where oil filled transformers are directly located adjacent to the building, the walls towards the transformer(s) will be fire rated with fire rating of 90 minutes according to IEC 61936-1 (2010). Columns: Exterior building steel columns will be in a linear arrangement. Spacing of the columns and respective bracings will be defined depending on the electrical requirements (e.g. minimum electrical clearances, bus duct locations, etc.). Interior building columns are usually not allowed because of electrical requirements, if not specified otherwise by SIEMENS.

Water tight openings will be provided in walls for electrical bus ducts penetrating external walls. Steel frames will be provided around wall openings for fixing of the sealing system between the bus ducts and the wall. The building framework (as like steel columns, steel girders, steel beams, steel bracings, etc.) will not be fire protected by fire resistant coating or cladding, since no fire load will be generated by the electrical equipment installed in the building. Architectural Appearance: The building will be finished with standard colour corrugated metal cladding and roof cladding. The colour will be as per manufacturers standard schedule. C) Building Type 2: Building Superstructure Brick Building (applicable if specified in CUSTOMER specification): Reinforced concrete framework with brick (masonry) infillRoof (Alternative A): Roof structure: Pre-cast hollow core reinforced concrete roof slab or similar pre-cast concrete roof system laid to slope

Non-ventilated roof system, sloped roof system (double or mono pitched), roof parapet (if specified in CUSTOMER specification) The roof cover system (suitably insulated and water proofed) shall be designed by SIEMENS civil designer as per locally typical standard if not specified otherwise in CUSTOMER specification.Roof (Alternative B): Roof structure: Steel trusses with various bracings and roof purlins resting on concrete columns. Cladding: refer to Building Type 1Walls:

Hollow core concrete blocks including plaster and paint Where oil filled transformers are directly located adjacent to the building, the walls towards the transformer(s) will be fire rated with fire rating of 90 minutes according to IEC 61936-1 (2010). Columns: Exterior concrete columns will be in a linear arrangement. Spacing of the columns and respective bracings will be defined depending on the electrical requirements (e.g. minimum electrical clearances, transformer bushings, etc.). Interior building columns are usually not allowed because of electrical requirements, if not specified otherwise by SIEMENS.

Water tight openings will be provided in walls for electrical bus ducts penetrating external walls. Steel frames will be provided around wall openings for fixing of the sealing system between the bus ducts and the wall. D) Floor:

Steel reinforced concrete foundation slab; Design and construction of slab shall comply with the requirements for foundation grounding (refer to Clause 11.2).

The switchgear floor slab (in the area where the switchgear components will be installed) shall be designed and constructed without expansion joints. The finished floor shall be even and flat. Tolerances for finished floor, anchor rails, anchor plates and angles shall as per SIEMENS requirements.

E) Miscellaneous:

The Switchgear Building is an unmanned building. People enter the building for maintenance only. Roof: Snow / ice shields (if required by environmental conditions) will be provided along the eaves of the roof at all locations above doors and above electrical equipment (e.g. wall bus ducts, etc.).

Roof storm water will be drained by roof gutters and roof down pipes. Access ladder to roof as well as roof safety harness systems is not included in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification.

Fire rating of walls and roof shall be as per CUSTOMER specification. If required, concrete embedded steel plates or other fixing plates and steel structures would be provided for installation of various electrical equipment.

SIEMENS scope of work includes the finishing as described in Clause 7, if not otherwise specified in CUSTOMER specification. An electrically powered overhead travelling crane (single or double girder depending on crane lifting capacity) would be provided inside the building, if specified in CUSTOMER specification or required by SIEMENS. The crane lifting capacity and crane hook height shall be chosen as per GIS component requirements (e.g. heaviest component to be lifted, etc.). The crane runway beams and rails shall be installed at the building columns at specified height. The length of the crane runway shall allow for safe installation of the GIS switchgear inside the building. An accidental fault arc within the GIS switchgear equipment may cause an abnormal overpressure in the switchgear room. In order to prevent damage to the building by the abnormal overpressure special pressure relief flaps may need to be installed at the building walls. The pressure relief flaps would be arranged such not to harm people when pressure opens flaps. The need for pressure relief flaps, their quantities and sizes as well as the maximum overpressure to the building structure will be defined by SIEMENS based on a project specific arc fault calculation.

Any pipework for plumbing or building services (e.g. water pipe, sewage pipe, condensate pipe, etc.) are not allowed to be routed above the switchgear equipment.

Architectural Appearance: The architecture of the building will be designed to meet the local requirements for industrial buildings if not specified otherwise in CUSTOMER specification.6.3 Control Building

The building will be a single/double story building (length m x width m x height m) and be constructed as described below, if not otherwise specified in CUSTOMER specification:A) Building Substructure:

Steel reinforced concrete foundation(s) and slabB) Building Type 1: Building Superstructure - Steel / Metal Building (applicable if specified in CUSTOMER specification): Steel structure (pre-manufactured and on-site assembled)

Roof:

Roof structure: Steel trusses with various bracings and roof purlins resting on steel columns

Cladding: standard cladding system (factory formed) made of insulated sandwich steel panel system or equivalent; commercial galvanized rolled steel sheets with maximum 0.50mm thickness; steel sheet coating: exterior sheet (front side) 25m PVDF paint (factory coated) / interior sheet (front side) 15m Polyester paint (factory coated) / standard RAL color as per manufacturers standard color range; panel profile: trapezoidal standard ribs; thermal insulation core: Polyurethane or equivalent for nonfire rated walls / Mineral Wool or equivalent for fire rated walls; overall coefficient of heat transfer 0,40 W/(mK); weighted sound reduction index of sandwich panel R(w) < 25dB; overall roof thickness / joint type/configuration / panel width and length: as per manufacturer's standard roof system; manufacturer: to be chosen by SIEMENS at project execution

Roof panels will be as required by type of roof, span of sheets, and applicable loadings.Walls:

Cladding: standard cladding system (factory formed) made of insulated sandwich steel panel system; commercial galvanized rolled steel sheets with maximum 0.50mm thickness; steel sheet coating: exterior sheet (front side) 25m PVDF paint (factory coated) / interior sheet (front side) 15m Polyester paint (factory coated) / standard RAL color as per manufacturers standard color range; panel profile: trapezoidal standard ribs; thermal insulation core: Polyurethane or equivalent for nonfire rated walls / Mineral Wool or equivalent for fire rated walls; overall coefficient of heat transfer 0,40 W/(mK); weighted sound reduction index of sandwich panel R(w) < 25dB; overall wall thickness / joint type/configuration / panel width and length: as per manufacturer's standard wall system; manufacturer: to be chosen by SIEMENS at project execution

Interior Walls: Non load bearing walls will be of concrete block work or metal stud partition walls with gypsum plaster board linings or metal linings. Columns: Exterior and interior steel columns will be in a linear arrangement. However some of the interior columns may be offset within the line from floor to floor to suit room layouts and their electrical clearances. Where oil filled transformers are directly located adjacent to the building, the walls towards the transformer(s) will be fire rated with fire rating of 90 minutes according to IEC 61936-1 (2010). The building framework (as like steel columns, steel girders, steel beams, steel bracings, etc.) will not be fire protected by fire resistant coating or cladding, since the building is designated as non- permanent work center and fire alarm system as well as fire escape ways allow the people leaving quickly the building in emergency case. Architectural Appearance: The building will be finished with standard colour corrugated metal sheet wall and roof cladding. The colour will be as per manufacturers standard schedule. C) Building Type 2: Building Superstructure Brick Building (applicable if specified in CUSTOMER specification): Reinforced concrete framework with brick (masonry) infillRoof (Alternative A): Roof structure: Pre-cast hollow core reinforced concrete roof slab or similar pre-cast concrete roof system laid to slope

Non-ventilated roof system, sloped roof system (double or mono pitched), roof parapet (if specified in CUSTOMER specification) The roof cover system (suitably insulated and water proofed) shall be designed by SIEMENS civil designer as per locally typical standard if not otherwise specified in CUSTOMER specification.

The type roof system will comply with the requirements for acoustical mitigation (if specified in CUSTOMER specification) and thermal insulation.Roof (Alternative B): Roof structure: Steel trusses with various bracings and roof purlins resting on concrete columns

Cladding: refer to Building Type 1

Walls:

Hollow core concrete blocks including plaster and paint Columns: Exterior and interior concrete columns will be in a linear arrangement. However some of the interior columns may be offset within the line from floor to floor to suit room layouts and their electrical clearances. Where oil filled transformers are directly located adjacent to the building, the walls towards the transformer(s) will be fire rated with fire rating of 90 minutes according to IEC 61936-1 (2010).D) Floor:

Steel reinforced concrete foundation slab; Design and construction of slab will comply with the requirements for foundation grounding (refer to Clause 11.2).

Slab for second level (if applicable): composite slab structure (metal deck concrete slab) or equivalent

E) Miscellaneous:

The Control Building can be defined as manned or unmanned building. The building would be commonly defined as unmanned building, if the systems are controlled from a remote station. Finally, the occupancy of this building shall be as per CUSTOMER specification. If a double story building is to be built, the access to the second floor will be via a staircase. An elevator is not included in SIEMENS civil scope of work, if not otherwise specified by CUSTOMER. If an emergency exit from the second floor is required as per CUSTOMER specification, this exit would be an outdoor steel platform (balcony at second floor level) with safety cage ladder to the ground. Roof: Snow / ice shields (if required by environmental conditions) will be provided along the eaves of the roof at all locations above doors and above electrical equipment.

Roof storm water drainage will be via roof gutters and roof down pipes. Access ladder to roof as well as roof safety harness systems is not included in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification. Suspended ceiling systems will be provided in various rooms (refer to Clause 7.1) if not otherwise specified in CUSTOMER specification. In rooms with suspended ceiling systems, the lighting wiring, ductwork, piping etc. will be installed in the space between structural ceilings and suspended ceiling panels. Luminaries would be integrated into the suspended ceiling. Color, texture, and materials of suspended ceiling panels will provide desired optical, acoustical, and fire resistant properties to the rooms. In any case, suspended ceiling in battery room is not allowed. The building height (internal clear room / building height) will be defined by SIEMENS electrical requirements (height of highest equipment, electrical clearances, space for maintenance above electrical equipment).

Raised floor system with anti-static cover will be provided in various rooms: Type and height of the raised floor systems will be as per SIEMENS electrical requirements. Separate steel support structures for electrical equipment will be provided in raised floor areas where required.

SIEMENS scope of work includes the finishing as described in Clause 7, if not otherwise specified in CUSTOMER specification. Fire rating of walls and roof will be as per CUSTOMER specification. Windows in electrical rooms will be not provided, if not specified otherwise in CUSTOMER specification. Windows in remaining rooms will be as per CUSTOMER specified requirements. All windows would be plastic type including double glazing and translucency where required, if not otherwise specified in CUSTOMER specification. Battery rooms with acid / alkali batteries shall be equipped with a portable emergency eye wash kit. The battery racks shall be preferably placed in liquid proof containment basins (to be supplied by battery rack supplier) in order to avoid thresholds and concrete or equal curb system. Otherwise, thresholds and concrete or equal curb system shall be provided. Floor drains will not be required. Hot water supply will be supplied by decentralized instantaneous water heaters each located in the room of hot water demand. Hot and cold water piping will be HDPE pressure pipe or similar sufficiently sized in diameter.

Sewage water piping will be PVC pipe sufficiently sized in diameter. Wall and ceiling openings between fire sections will be closed with appropriate fire resistant material. Architectural Appearance: The architecture of the building will be designed to meet the local requirements for industrial buildings if not specified otherwise in CUSTOMER specification.7 Building Room Schedule

7.1 Room Finishing

SIEMENS scope of work includes following room finishing for a steel building, if not otherwise specified in CUSTOMER specification:Room Floor FinishWall FinishCeiling Finish

GIS RoomEPEmP or MC 1)EmP or MC 2)

C&P RoomRFEmP or MC 1)EmP or MC 2)

AC/DC RoomRFEmP or MC 1)EmP or MC 2)

Battery RoomEP or crFP 3)EmP or MC 1)EmP or MC 2)

Aux. Transformer RoomEPEmP or MC 1)EmP or MC 2)

MV Switchgear RoomEPEmP or MC 1)EmP or MC 2)

Interface Metering Room (if applicable)EPEmP or MC 1)EmP or MC 2)

Corridor (if applicable)EPEmP or MC 1)SC

Office (if applicable)PTEmP or MC 1) SC

Toilet (if applicable)CTEmP or MC and CT 1) 4)SC

Kitchen (if applicable)PTEmP or MC and CT 1) 4) SC

Basement (if applicable)EPnonenone

SIEMENS scope of work includes following room finishing for a brick building, if not otherwise specified in CUSTOMER specification:Room Floor FinishWall FinishCeiling Finish

GIS RoomEPEmPEmP

C&P RoomRFEmPEmP

AC/DC RoomRFEmPEmP

Battery RoomEP or crFP 3)EmPEmP

Aux. Transformer RoomEPEmPEmP

MV Switchgear RoomEPEmPEmP

Interface Metering Room (if applicable)EPEmPEmP

Corridor (if applicable)EPEmPSC

Office (if applicable)PTEmPSC

Toilet (if applicable)CTEmP and CT 4)SC

Kitchen (if applicable)PTEmP and CT 4)SC

Basement (if applicable)EPnonenone

1) EmP applicable for internal walls; MC applicable for external walls (building enclosure)2) EmP applicable for a double story building; MC applicable for a single story building3) EP applicable when batteries are installed in liquid proof containment basins; crFP applicable when no containment for batteries is provided4) CT at wash basin and shower (if applicable); EmP at remaining wall areasLegend to Room Schedule:

The following descriptions clarify the meaning of the room finishing.

Floor Finish

RFRaised modular Floor system; height as per SIEMENS electrical requirements; anti-static PVC

floor tiles

CTCeramic Tiles (thickness 7mm)

crCTchemical resistant Ceramic Tiles (thickness 7mm)

PTPVC Tiles

EPEpoxy Paint

crFPchemical resistant Floor Paint

Wall Finish

MCMetal Cladding (building enclosure)

CTCeramic Tiles (thickness 6mm)

arCTchemical resistant Ceramic Tiles (thickness 6mm)

EPEpoxy Paint

crWPchemical resistant Wall Paint

EmPEmulsion Paint (= latex paint, dispersion paint)

Ceiling Finish

MCMetal Cladding (building enclosure)

DbPDust binding Paint

EmPEmulsion Paint (= latex paint, dispersion paint)

SC Suspended Ceiling system (mineral fiber)

Notes: Where plaster finishing to wall is to be applied, the wall will be treated with plaster from unfinished floor up to unfinished ceiling.

Visible concrete surfaces will be left fair faced and will not be plastered. The suspended ceiling cavity as well as the raised floor cavity is without any additional finishing treatment.

If not specified otherwise in CUSTOMER specification, color of wall paint is white according to manufacturer standard color range. If not specified otherwise in CUSTOMER specification, color of floor finishing is grey (pebble grey RAL 7032 or similar) according to manufacturer standard color ranges. All floor finishing will include a 5 cm high skirting at wall of the similar material as the floor finishing. All floor finishes will be directly applied onto the smooth structural concrete floor surface. Screed will be provided only if surface tolerances of structural concrete floor cannot be met.7.2 Room Furniture and FacilitySIEMENS scope of work includes following room furniture and facilities, if not otherwise specified in CUSTOMER specification:

RoomFurniture

Battery Room1 No. portable eye wash kit including 2 No. eye wash solution bottles; 1 No. mirror; 1 No. tissues; 1 No. eye wash sign; (kit mounted to wall)

Office (if applicable)1 No. ordinary office desk; 1 No. ordinary office chair; 1 No. ordinary visitor chair; 1 No. ordinary side board; 1 No. ordinary filing cabinet; 1 No. ordinary coat hang; 1 No. plastic waste box

Toilet (if applicable)1 No. ordinary ceramic sink; 1 No. ordinary ceramic European WC set; 1 No. wall mirror; 1 No. plastic waste box; 1 No. plastic paper holder

Kitchen (if applicable)1 No. ordinary metal sink; 1 No. ordinary cooker with two hot plates; 1 No. ordinary laminated wooden wall cabinet; 1 No. ordinary laminated wooden floor cabinet

7.3 DoorsAll doors will be standard sized as per SIEMENS electrical requirements (largest equipment to be transported through). Standard duty steel doors (hollow steel door with rigid insulated core) will be provided to all electrical rooms. Laminated plywood doors would be provided for office, toilet, kitchen and other social rooms, if applicable.Roller shutter door will be provided where large door openings requires for such door type.All exterior doors will be furnished with appropriate weather stripping and thermal insulation. Provision of a canopy above exterior door is not included in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification.Each door (except for kitchen and toilet) will be furnished with a locking cylinder matching to the master key system (one level key system).Emergency exit doors along the escape routes will be equipped with panic push bars at the active door leaf.Fire rating of doors will be as per CUSTOMER specification. In front of each exterior door a ramp (with appropriate inclination) or a concrete platform will be provided to allow for both safe equipment transports into the building and safe personnel entrance (exit) to (from) the building(s). The size of each concrete platform will be chosen in order to fit at least the size of the exterior door. Handrail at the concrete platform will be provided only, where the fall height is greater than 50 cm.8 Outdoor Equipment Foundations

Various outdoor equipment foundations will be provided as required by SIEMENS electrical design and engineering.

All equipment foundations shall be founded on shallow foundations (raft-, plinth-, pad-foundations), if not otherwise recommended in the geotechnical report.

8.1 Transformer Foundation(s)

General

The transformer foundation(s) will be designed and constructed according to the Standard IEC 61936-1 if not specified otherwise in CUSTOMER specification.Passive fire quenching systems below the transformer as like stone cover on top of grating or drainage of oil to a remote pit shall be provided as per IEC 61936-1 if not specified otherwise in CUSTOMER specification. Active system like water spray deluge system will be not provided if not specified otherwise in CUSTOMER specification.There are various alternatives to drain or collect waste transformer oil in case of transformer oil leakage. The intent of an oil spill containment system shall be to prevent a discharge of oil to the surrounding natural ground and to the storm water drainage system of the Substation.SIEMENS will provide following transformer oil spill containment as described below. Alternative 1: Stand-alone transformer excluding oil/water separatorThe transformer oil spill containment shall consist of retention oil pit with concrete wall barriers surrounding the transformer.

As recommended in IEC 61936-1 (2010) (Figure 8) the volume of the integrated oil containment pit shall be calculated to contain 100 percent (%) of the total oil volume of the transformer including storm water retention and firefighting deluge water (if applicable) if not specified otherwise in CUSTOMER specification.

The storm water shall be collected in the integrated containment pit and pumped out on an as needed basis by an external pump. The storm water shall be field screened for the presence of oil, grease or other contaminates as appropriate prior to pumping. If oil, grease or other contaminates shall be observed in the pit, the water shall be pumped to a tank truck and managed in accordance with applicable regulations. If the water contains no oil, grease or other contaminates, the storm water shall be pumped to the Substation yard area or to the storm water drainage system.

A 25 cm thick rock layer placed on a steel grating frame system shall be provided at the top of each integrated oil containment pit so that in the case of fire, burning oil will be prevented from entering the containment area below. The material applied shall be approx. 4 cm washed uniformly sized rock. Alternately to the rock layer and grating a flame retardant grating can be provided if specified in CUSTOMER specification.Alternative 2: Transformers excluding oil/water separatorIf there are more power transformer foundations are located close by each other, it would be economic to link all integrated oil containment pits to each other as recommended in IEC 61936-1 (2010) (Figure 10) as well as in IEEE 980 (1994) Clause 7.5. The volume of the overall integrated oil containment pit shall be calculated to contain 100 percent (%) of the total oil volume of the largest transformer including storm water retention for all transformers and firefighting deluge water for one transformer (if applicable) if not specified otherwise in CUSTOMER specification.For further requirements and recommendations refer to Alternative 1.Alternative 3: Transformer(s) including oil/water separatorIf there is more than one power transformer at the Substation, it may be economic to link the oil containment drainage areas of these to an underground oil/water separator. The oil/water separator shall be dimensioned to accommodate 100 percent (%) of the total oil volume of the largest transformer including storm water retention or deluge water for one transformer firefighting (if applicable) if not specified otherwise in CUSTOMER specification. As per IEEE 980 (1994) Clause 7.5 the total volume of water from storm water event should be compared with the firefighting deluge water to determine the worst-case water volume to be considered in the containment design.

As recommended in IEC 61936-1 (2010) (Figure 9) the volume of the pit below the transformer shall be calculated to contain 20 percent (%) of the total oil volume of the transformer if not specified otherwise in CUSTOMER specification.

As per IEC 61936-1 (2010) (Figure 9) an open pit without grating and gravel protection shall be provided if not specified otherwise in CUSTOMER. Gravel protection is required above the drain sump only.

The oil/water separator will be built by cast in-situ concrete or by a prefabricated tank (e.g. fiberglass or similar). A single chamber will be provided to segregate water and oil. The oil/water separator shall be connected to the storm water drainage system of the Substation. The oil/water separator shall be equipped with a gravity drainage outlet as well as means to prevent drainage of oil with normal precipitation in the event of an oil discharge and a sump for use in removing oil with a portable sump pump.

The connection pipe work shall be designed to ensure rapid discharge of oil to the oil/water separator that together with pipe works and pipe sealing shall be resistant to hot transformer oil.Miscellaneous

The storm water to be considered in the calculation of pits and separators should be the height of precipitation per one day (24hours) based on a 25 year storm event (refer to IEEE 980 (1994) clause 7.5).

The oil pit as well as the oil/water separator will be designed to have high resistance against water penetration (crack width limitation). Floor and wall coating with oil resistant paint is not required if not otherwise specified CUSTOMER specification. The foundations and surrounding walls should be designed without expansion joints. In case expansion joints or construction joints are required from structural point of view the joint sealant shall be water proof as well as oil proof.

Commonly the spare transformer (if applicable) will be stored on a separate foundation. The oil containment pit of a spare transformer as well as their drainage and oil handling system will be similar to the other transformers provided that this spare transformer is oil filled and connected to power supply.

The design and construction of the transformer foundations and adjoining roadways shall enable the transformers to be readily moved into final position or removed in an emergency situation. By using a crane or hydraulic lifts or rails or self-levelling load loaders the transformers shall be manoeuvred to final position. Concrete beams between oil containment pit front wall and transformer pedestal may be required to slide transformer to final position.The concrete surface tolerances at top of transformer foundation (flatness) shall be as per transformer manufacturers requirements.

8.2 Other Electrical Equipment Foundations

Various foundations for all outdoor equipment will be provided (including anchor bolts) keeping SIEMENS electrical requirements and soil bearing pressure of subsoil into consideration.

8.2.1 Anchor Bolts

Electrical equipment will be mounted on concrete cast in place steel anchor bolts with threaded ends and steel leveling nuts or chemical injection / expansion anchors.

The anchor bolts will be held in position using templates while concrete is poured or a recess will be formed to receive the bolts and subsequently grouted into position according to the structural requirements.

Cast in place steel anchor bolts will be either designed in such manner that no grouting between top of concrete and bottom of steel foot plate is required or designed with non-shrink grout between bottom of foot plate and top of concrete.

All anchor bolts will be hot dipped galvanized at least at the part of the bolt which is projecting above top of concrete foundation.8.3 Electrical Equipment Support Steel Structures (Building Indoor)Following indoor steel structures for SIEMENS electrical equipment will be provided as part of the civil scope of work: Support steel structures for the electrical panels to be located in rooms with raised flooring Concrete embedded steel parts and anchors / bolts, if applicable Steel frames for bus duct wall penetrations9 Civil Site Infrastructure

9.1 Cable Raceway StructuresCables will be buried directly in ground, laid on concrete cable trench floors, laid in cable conduits (pipes), laid in duct banks (group of conduits bundled together and protected by concrete casing), all depending on SIEMENS electrical requirements or as specified in CUSTOMER specification.Concrete cable trenches will be prefabricated or cast in situ type with removable pedestrian duty concrete covers. The internal clearances of the various cable trenches will be defined by SIEMENS based on SIEMENS cabling requirements.At road crossings and driveway crossings the concrete cable trenches will be replaced by concrete cable duct banks designed for load of vehicle. Concrete cable trenches will be drained where necessary (e.g. by use of open bottom or drain holes). Concrete cable trenches shall not be used as storm water drains for the Substation.Covers for concrete cable trenches will be provided to be removable by machinery or by hand (hand removable by two people). Some cables will be placed in underground conduits (PVC pipes) or cable duct banks including cable pulling boxes and cable pulling pits. Cable ways and conduits (pipes) will be installed in locations and quantities so as to satisfactorily accommodate all anticipated SIEMENS cabling requirements. As a general rule, signal and control cables shall be kept separate from power cables. The separation of cables in concrete cable trenches shall be preferably done by pre-cast concrete triangular shaped divider wall elements (e.g. size: height 250-350mm / bottom width approx. 80mm / top width approx. 30mm / each piece less than 35 kg). These elements shall be loosely placed on the trench floor (no fixation to floor) as per SIEMENS cable installation requirements.Neither cable ladders nor cable trays will be provided within the concrete cable trenches if not otherwise specified in CUSTOMER specification.Any concrete edge of cable trenches, cable pulling boxes, pits, etc. at which cables may be pulled across/along will be properly chamfered to protect cables from damage.

All cable entrances into the building(s) will be properly sealed to avoid rodent, vermin and water ingress into the building.

9.2 Roads

The access road to the Substation (if specified in CUSTOMER specification) as well as the internal Substation service roads will be provided by SIEMENS as per CUSTOMER specification. In case no road pavement is specified by CUSTOMER, all roads will be asphalt roads without kerbing.The width of road in front of the transformer foundations as well as the transformer transport access (incl. road radii) within the Substation will be determined by SIEMENS based on transformer installation requirements.

The width as well as the radii of the roads will be constructed to allow access by maintenance vehicles, if specified in CUSTOMER specification. Otherwise the road will be 3.0m wide and the inner road radius will be 6m.Main walkways from road edge to building entrances will be paved with asphalt wearing course or interlocking paving blocks. Walkways around the buildings and structures will not been provided, if not otherwise specified in CUSTOMER specification.The roads / walkways will be graded (transversally) to allow storm water run-off. Storm water will be directly drained by gravity into the adjacent Substation yard if not otherwise specified in CUSTOMER specification.

Road signs, traffic signs, road surface markings and guard rails (if applicable) within the Substation will be not required if not otherwise specified in CUSTOMER specification.If a new access road is to be constructed, this road shall generally follow the existing topography, subject to achieving acceptable gradients. The gradient of the road shall be checked as suitable for the use by transformer delivery vehicle and standard trailer. The access road shall be tied in to the finished Substation level at the access gate to the Substation.9.3 Perimeter Fencing / Equipment Fencing

The Substation will be surrounded by a standard perimeter security fence (polymer coated steel wire mesh including barbed wire system at top, height of fence 2000mm + barbed wire on top) including a main access gate (type similar to fence), if not otherwise specified in CUSTOMER specification. The access gate will be a manually operated double wing type.Where electrically required from safety point of view, switchyard equipment may be enclosed by common wire mesh fences (height 1800mm) including manually operated wing access gate.The access gate to Substation as well as the gates at internal fencing will be sufficiently sized to allow for largest equipment transport and maintenance vehicle passing through.All gates will be furnished with a common pad lock.9.4 Landscaping (Final Station Surfacing / Insulating Gravel)

All Substation yard areas which are not occupied by buildings, structures and roads will be protected by a final stone cover of 150mm thickness if not otherwise specified in CUSTOMER specification. The purpose of final surfacing / insulating gravel is to increase the tolerable limits of step and touch potentials by introducing resistance in series with human body. The insulating gravel will be crushed rock (20mm to 40mm sieve size).9.5 Storm Water Drainage

Storm water from the roofs will be collected into gutters and down pipes and led through storm water lines into the municipal storm water system. It is assumed that CUSTOMER provides a terminal point at the boundary of the Substation and that the municipal drainage system is sufficiently sized in capacity. The terminal point shall include a manhole and all required accessories, which are connected to the municipal storm water system, and to which SIEMENS shall connect the Substation storm water drainage. If there is no municipal drainage to connect to, the storm water from the roofs would be directly drained by gravity into the ground.Storm water (surface water) from the gravelled areas of the Substation will be directly drained by gravity into the ground if not specified otherwise in CUSTOMER specification. Culverts, French drains, drainage channels, land drains, open trenches, retention basins, pumps and / or other services and structures for storm water drainage will not be provided if not otherwise specified in CUSTOMER specification.9.6 Water Supply System

This Clause is applicable only, when SIEMENS will provide facilities within the building, which require for water supply (e.g. toilet, kitchen, sink)The service water supply system shall be fed by the public water supply system. Water supply system at the Substation shall be provided for the personnel support facilities (toilet, kitchen and cleaning). Water supply services and facilities for fire fighting are not included in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification. It is assumed that a municipal (water utility or others) water supply pipe with sufficient capacity and pressure is available at the Substation boundary. It is assumed that CUSTOMER provides a terminal point at the boundary of the Substation. The terminal point shall include a manhole and all required valves, meters and accessories, which are connected to the municipal water supply system, and to which SIEMENS shall connect the Substation water supply. Neither pumps nor water storage tanks are included in SIEMENS scope of work.

If there is no public water supply to connect to, the service water shall be supplied by an external water tanker on a as need basis.

In case a water storage tank shall be provided by SIEMENS (if specified in CUSTOMER specification) this tank shall be provided as follows:

concrete or fiberglass below or above ground tank (to be decided by SIEMENS at design stage depending on environmental as well as local conditions)

water tank dimensioned for 20 working days water consumption per person 60 litre/day (for toilet, sink and kitchen)

[person means a people / staff permanently working at the Substation (8 hours per day / 5 days per week)]

water consumption per person 80 litre/day (for shower, toilet, sink and kitchen)

[person means a people / staff permanently working at the Substation (8 hours per day / 5 days per week)]

filling of water tank by external water tanker

sufficiently sized water pump (single pump) to transport water from water tank to the various consumers at the Substation building(s)

A water tank would require periodic maintenance at frequencies dependent upon the usage of the facility.Any water treatment, water filtering and the like in order to provide better water quality or potable water quality is not included in SIEMENS scope of work.

Pipes for water supply will be insulated as required.

Pipes for the water supply shall not be located above electrical equipment and electrical cubicles.9.7 Sewage Water DrainageThis Clause is applicable only, when SIEMENS will provide facilities within the building, which require for water sewage (e.g. toilet, kitchen, sink).Sewage water shall be led through sewage lines into the municipal sewage water system. It is assumed that CUSTOMER provides a terminal point at the boundary of the Substation and that the municipal sewage water system is sufficiently sized in capacity. The terminal point shall include a manhole and all required accessories, which are connected to the municipal sewage water system, and to which SIEMENS shall connect the Substation sewage water drainage. If there is no municipal drainage to connect to, the sewage water and sludge shall be collected in a holding tank. This holding tank shall be pumped out on a as need basis by an external tanker.

The sewage drainage system includes all necessary pipe work and manholes. Discharge units, traps, catch-pits, holding tank, septic tank, pumps and / or other services and structures for the sewage water drainage will not be provided if not otherwise specified in CUSTOMER specification.If a holding tank shall be supplied by SIEMENS (if specified in CUSTOMER specification) this tank would be provided as follows:

concrete or fiberglass below ground tank one chamber holding tank including natural air ventilation holding tank dimensioned for 20 working days sewage / sludge per person 60 litre/day (for toilet, sink and kitchen)

[person means a people / staff permanently working at the Substation (8 hours per day / 5 days per week)]

sewage / sludge per person 80 litre/day (for shower, toilet, sink and kitchen)

[person means a people / staff permanently working at the Substation (8 hours per day / 5 days per week)]

emptying of holding tank by external water tanker

any pump and respective power supply is excludedA holding tank would require periodic maintenance at frequencies dependent upon the usage of the facility.The arrangement of sewer pipes shall be dictated by elevation of the building to which it connects. The gradients of the sewer shall correspond to the most favorable hydraulic conditions. Gravity drainage shall be applicable for sewage water system, providing a substantially maintenance-free and operationally safe installation.

10 Building Services10.1 Building Lightning Protection System

The Substation requires protection from lightning strike currents, since the equipment are electronically sensitive and may malfunction when subject to a lightning strike.

All buildings will be protected from lightning strike currents by the overall Substation lightning protection system or by individual building lightning protection systems. The need for an individual building lightning protection system will be decided by SIEMENS based on the SIEMENS lightning protection study to be done for the overall Substation at the project execution phase.10.2 Small Power & Lighting Systems (Normal & Emergency)

10.2.1 General

The buildings will be considered as industrial building. All lighting fixtures and associated switches will be industrial grade.The lighting systems will facilitate a safe operation during normal and emergency conditions.

The service voltage will be as per applicable Codes & Standards and local requirements.10.2.2 Indoor Lighting & Small Power System

The indoor lighting system will provide uniform illumination for general seeing and it will suite room application. The lighting system will be provided to achieve an adequate working environment for the personnel.

Indoor lighting fixtures will be evenly spaced and will be equipped with standard lamps (fluorescent tube or bulkhead lighting). Lighting fixtures will be provided and located such that safe access and easy maintenance is ensured.The lighting fixtures will be controlled with local switches (one way / two ways). The switches will be common standard type without indicator light.In general, the installations will be surface mounted with cables normally directly clipped to wall (surface installation). All lighting fixtures will be installed and wired as specified in CUSTOMER specification.In each building various power outlets (single / double sockets) will be installed in each room. Lighting fixtures, power outlets and switches in battery room will be explosion proof.

The location and numbers of lighting fixtures shall be defined in accordance with electrical equipment arrangements and lighting calculation to be provided by SIEMENS at detail design stage.

All switches, lighting fixtures, sockets, and accessories will be common standard.

10.2.3 Outdoor Lighting & Small Power Systems

Outdoor lighting & small power system will be provided as specified in CUSTOMER specification.

Lighting fixtures would be fixed to building walls, lightning masts, gantries, lighting posts and various other support steel structures as approved by SIEMENS. Locations and height would be chosen to facilitate maintenance requirements and consider electrical clearance. Fixation to any electrical equipment is not allowed.

If maintenance works of Substation electrical equipment are to be done at night time, temporary mobile flood lights are to be used as needed. Temporary mobile flood lights are not in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification.10.2.4 Emergency Lighting System

Emergency lighting system shall be used in the event of complete AC supply failure to the Substation.

Emergency lighting system will be provided in the building(s) on all escape routes and in all rooms which are not naturally illuminated by windows. Illuminated exit signs will be provided at all emergency exit doors. The system will provide sufficient illumination to ensure the safe movement of personnel and safe exit from the building(s).

Low level emergency outdoor lighting will be provided only if specified in CUSTOMER specification.10.3 Fire Protection System

Fire detection system will be provided as per CUSTOMER specification. Fire fighting system like gas suppression systems, water sprinkler systems, hydrant systems and transformer deluge systems are not included in SIEMENS scope of work if not specified otherwise in CUSTOMER specification.Portable fire extinguishers in sufficient sizes and quantities will be provided by SIEMENS at strategic locations within the building. Potable fire extinguisher shall be conspicuously located where these will be readily accessible and immediately available in the event of fire. Preferably they will be located along normal paths of travel including exits from areas.

The extinguishing agent like CO2, water, dry chemical, etc. will be defined by SIEMENS based on the classification of fire hazard and fire class of the element to be extinguished. Extinguishing operating instructions (in local language) will be located on the front of the portable extinguisher and be clearly visible.

Portable fire extinguishers at outdoor locations of the Substation are not included in SIEMENS scope of work if not otherwise specified in CUSTOMER specification. Portable fire extinguisher requires periodic maintenance at frequencies recommended by manufacturer. Any maintenance is to be done by CUSTOMER.10.4 HVAC (Heating Ventilation Air Conditioning System)

HVAC system will be provided as per CUSTOMER specification. Specific requirements to room conditions (e.g. max/min room temperature, max/min room humidity, etc.) for SIEMENS electrical rooms will be specified by SIEMENS based on the electrical equipment used.10.5 Surveillance Systems

The Substation will be protected by a perimeter fence.Other surveillance systems for the Substation are not included in SIEMENS scope of work, if not otherwise specified in CUSTOMER specification.Doors will generally be provided with individual mortise locks matching to the Substation master key (one level type) system. Gates of fenced areas will be locked by individual pad locks.

11 Grounding System

The Substation grounding shall be provided to prevent any condition arising which may cause injury to personnel or damage to equipment either inside or outside the Substation as a result of an electrical potential rise.

In general all steel works located in the vicinity of energized electrical equipment within the Substation will be connected to the grounding system.

11.1 Outdoor Grounding Grid

A copper conductor outdoor grounding grid will be installed at a suitable depth below grade.

The reinforcement of the outdoor electrical equipment foundations will not be connected to the grounding grid if not otherwise specified in CUSTOMER specification.11.2 Building Foundation Grounding

The building(s) will be provided with a building foundation grounding grid built into the concrete floor slabs according to SIEMENS requirements.

Reinforced concrete foundation slabs are normally used as foundation earth in new building(s). The required equipotential bonding in building(s) with electrical installations is made much more effective by these foundation earth electrodes. The foundation earth electrodes will be bare reinforcement bars laid as grid. These reinforcement bars will be installed in addition to the structural reinforcement of the foundation slab. The foundation grounding grid will be welded at each junction to form a rigid grid and laid on top of the bottom rebar layer in the concrete slab. The foundation earth electrodes will be connected to the structural steel reinforcement by wire wrapping.The foundation grounding grid will be connected to the outdoor grounding grid of the Substation.11.3 Indoor Grounding System

The main indoor grid will include an above floor conductor system in each electrical room.

12 PermittingCUSTOMER shall be responsible for obtaining all necessary Owner Permits (e.g. site development permits, planning permits, environmental permits, etc.) and respective approvals by authorities, owners and agencies. SIEMENS can provide the respective support input data related to the SIEMENS scope of work. This input data shall be the drawings commonly provided for achieving the Released for Construction document status. Special documentation like studies, reports, calculations, drawings, etc. solely needed for Owner Permit application are not included SIEMENS scope of work, but can be ordered by CUSTOMER separately.Property documents, permits and environmental clearances without any encumbrances shall be handed over by CUSTOMER to SIEMENS in advance of Site Hand Over to SIEMENS. All necessary statutory clearances and permissions should be in place at date of Site Hand Over to SIEMENS.

Provision and preparation of any environmental, nature conservation and wildlife protection studies, investigations and mitigations, if any, are in the responsibility of CUSTOMER.

Planning permission or other permit application to remove existing vegetation or wildlife from Site is in the responsibility of CUSTOMER.

The time required for getting Owner Permits and other approvals by authorities, owners and agencies shall not delay SIEMENS scheduled works.In case of any delay in approval / permit procedure then SIEMENS reserves the right to adjust the contract schedule and to pass all additional expenses whether direct or indirect onto CUSTOMER.

Civil design and civil construction related Building Permit shall be obtained by CUSTOMER. SIEMENS will provide all related civil drawings, which are usually generated at civil detailed design phase.13 Civil Engineering & DesignThe civil engineering & design to be provided by SIEMENS includes architectural, civil, structural, mechanical and electrical design for the Substation project. These design services shall be provided by a company or specialist consultants engaged by SIEMENS. SIEMENS shall appoint the civil designer and shall have free choice of the civil designer.

Detail design drawings shall be submitted to CUSTOMER for review. CUSTOMER shall make his comments on drawings and documents submitted by SIEMENS the first time for approval. The review period shall be limited to 10 working days from submittal date by SIEMENS. Any extension of review time shall be considered for extension of the agreed completion milestones. Alterations arising from such comments from CUSTOMER shall be incorporated where these both represent the correct interpretation of the CUSTOMER specification and reflects SIEMENS scope of work. If no response is received by CUSTOMER within 10 working days the drawings shall be deemed accepted. Requested changes shall be incorporated within appropriate time and the drawings resubmitted to CUSTOMER for information. The as-built documentation of all construction drawings will be provided to CUSTOMER in pdf format, if not otherwise specified in CUSTOMER specification.

Energy Power Transmission SolutionsTechnical Description

AIS / GIS Substation Civil Scope of Work

Page 27 of 29Siemens Proprietary & Restricted

File: 140806_AISGIS_CivilDescription_toCustomer_Rev0_PLM.doc