1
Bangladesh Power
Development Board
Extension of Barapukuria Coal Fired Thermal
Power Station by 250 MW (3
rdUnit)
Tender Documents
Part B
Technical Requirements
2 B0 General Specification
0.1 Subject of Specification 0.2 General Auxiliary Systems 0.2.1 Purpose of the Plant
0.2.2 Site conditions- environmental conditions 0.2.2.1 Location of site
0.2.2.2 Transportation and access road for site 0.2.2.3 Meteorological condition
0.2.2.3.1 General 0.2.2.3.2 Rainfall
0.2.2.3.3 Temperature and humidity 0.2.2.3.4 Earthquake
0.2.2.3.5 Wind
0.2.2.3.6 Flood water level condition 0.2.2.3.7 Geological conditions 0.2.3 Layout
0.2.4 Configuration
0.2.5 General technical requirements of the Plant 0.2.5.1 Design requirements
0.2.5.2 Outline description of generating facilities 0.2.5.3 Main powerhouse including control building 0.2.5.4 Civil
0.2.6 Mode of operation
0.2.7 Environmental conditions and emission control standards
0.2.7.1 Environmental conditions
0.2.7.2 Ambient standards and emission standards 0.2.8 Fuel
3 0.2.8.2 Ash
4 0.2.9 Waste and waste water
0.3 Supply and Services 0.3.1 General
0.3.2 Scope of engineering services 0.3.3 Common equipment 'and services 0.3.3.1 General
0.3.3.2 Mechanical
0.3.3.3 Electrical, instrumentation and control 0.3.3.4 Civil
0.3.4 Packing and transportation 0.3.5 Documentation
0.3.5.1 Documentation with Tender
0.3.5.2 Documentation after award of Contract 0.3.5.3 Requirements for documentation:: 0.3.6 Erection, commissioning and testing
0.3.7 Training of Employer's personnel 0.3.7.1 General
0.3.7.2 Training in the Contractor's country 0.3.7.3 Training at site
0.3.8 Spare parts, tools, appliances, and consumable 0.3.8.1 Spare parts
0.3.8.2 Tools and appliances 0.3.8.3 Consumables 0.3.9 Maintenance works 0.3.10 Options
0.3.10.1 Option: Later realization of Power Unit 3 0.3.10.2 Option: l-.Maintenance works of the whole
Plant 0.4 Interfaces
5 0.4.1 Limits of supply
6 0.4.2 Interfaces to existing facilities on site
0.4.3 Metering
0.4.4 Communication systems 0.5 Form sheets (Data Sheets)
0.6 General Technical Requirements 0.6.1 General requirements 0.6.2 Standards and codes
0.6.3 Plant and equipment identification (e.g. Power Plant Coding System KKS)
0.6.4 Marking and labeling of crates and packages 0.6.5 Corrosion protection coaling and galvanizing 0.6.6 Vibration
0.6.7 Standardization of makes 0.6.8 Accessibility
0.6.9 Signs
0.6.10 Units of measurement
0.6.11 Ways, stairs, ladders, balustrades
0.6.12 Hazardous areas fire protection provisions 0.6.13 Maintenance isolation
0.6.14 Materials
0.6.15 Pre-service cleaning and protection of plant equipment 0.6.16 Mechanical equipment
0.6.16.1 Pumps
0.6.16.2 Piping and accessories
0.6.16.2.1 Standards and general conditions 0.6. 16.2.2 Material and construction
standards 0.6.16.2.3 Bolts and nuts
0.6.16.2.4 Pipe supports and anchors 0.6.16.2.5 Cleaning at workshop
0.6.16.2.6 Cleaning at site 0.6.16.2.7 Wall boxes and collars 0.6. 16.2.8 Expansion and flexibility Piping design criteria
Welding and heat treatment 0.6.16.4.1 Responsibility Required documents Welding procedure qualification Personnel qualification Welding process Pre-heating and heat
treatment
0.6. 16.4.7 Documentation Valves, steam traps, condensate drainers,
safety valves, control valves
0.6.16.6 Insulation 0.6.16.7 Vessels, tanks, heat exchanger
0.6.17 Electrical equipment and works 0.6.17.1 Standards Standard voltages Climatic conditions Inductive interferences Color code system for switchgear, for local switching measurement-control-signaling cabinets and for mimic diagrams
0.6.17.6 Protection class for electrical operational equipment and control and monitoring equipment 0.6.16.5 0.6.16.3 0.6.16.4 0.6.16.4.2 0.6. I 6.4.3 0.6.16.4.4 0.6. 16.4.5 0.6.16.4.6 0.6.17.2 0.6.17.3 0.6.17.4 0.6.17.5
0.6.17.7 Protective measures 0.6.17.8 Auxiliary equipment
0.6.17.9 Requirements for local cubicles and local housings for e.g. switchgear, control, measurement and signaling equipment
0.6.17.10 Local control points and level control
cabinets
0.6.17.11 T erminal boxes and terminal cabinets
0.6.17 .12 Explosion proof equipment 0.6.17 .13 Keys and key cabinets 0.6.17. I 4 Electric motors 0.6.17.14.1 High voltage motors 0.6.17 .14.2 Low voltage AC motors 0.6.17 .14.3 Actuator drives 0.6.17.14.4 DC motors 0.6.17.14.5 Painting 0.6.17 .14.6 Protection against explosio n hazards 0.6.17.14.7 Frequency converters 0.6.17 .14.8 Tests 0.6.17 .14.9 Motor list 0.6.17 .14.10 Labels 0.6.18 Instrumentation and control
0.6.18.1 Measuring units
0.6.18.2 Sizes of indicators, recorders, etc.
0.6.18.4 Special local conditions 0.6.18.5 Tests 0.6.18.6 Field equipment 0.6.18.6.1 Measuring systems/tr ansmitte rs 0.6.18.6.2 Flow measurements 0.6.18.6.3 Temperature measurements 0.6.18.6.4 Pressure measurements
0.6. 18.6.5 Analyses meas urem ents 0.6. 18.6.6 Level meas urem ents 0.6. 18.6.7 Electrical meas urem ents 0.6. 18.6.8 Position meas urem ents 0.6. 18.6.9 Contact devic es 0.6.18.6.10 Vibration meas urem ents. 0.6.18.6.11 Control valve s 0.6.18.6. 12 Actuators 0.6.18.6.13. Local instru menta
tion 0.6.18.7 Racks, junction boxes 0.6.18:8 Control cubicles 0.6.18.9 Programmable logic controller
0.6.18.10 T ransmitter racks and piping
0.7 Inspection and Testing 0.7.1 General
0.7.1.1 Workshop manufacturing and pre-assembly
0.7.1.2 Works inspections 0.7.2 Testing during manufacturing
0.7.2.1 Material tests 0.7.2.2 Tests at site 0.7.2.2.1 General remar ks 0.7.2.2.2 Hydraulic tests 0.7.2.2.3 Test runs and
functi onal tests 0.7.2.2.4 Visual ins pec tion , che cki ng of dim ens ion
s, test inst ru me nts 0.7.2.3 Manufacturing tests 0.7.2.3.1 Welding 0.7.2.3.2 Pressure testin g 0.7.2.3.3 Testing of cor rosi on pro tect ion
0.7.2.4 Mechanical equipment 0.7.2.5 Electrical equipment
Table of Contents of the Tender Documents, Part B
• Section B0: General Technical Specification • Section B I : Steam Generator Plant
• Section B2: Steam Turbine Plant with Condensate and Steam System • Section B3: Coal Handling System
• Section B4: Air and Flue Gas System • Section B5: Ash Handling System
• Section B6: Water Storage and Treatment Systems • Section B7: Auxiliary Systems
• Section B8: Electrical and Associated Works • Section B9: Instrumentation and Control Works
• Section B 10: Communication, Clock and Surveillance Systems • Section B11: Civil Works
• Section B12: Workshops, Stores and Vehicles
B0. General Specification
0.1 Subject of Specification
This section forms an integral part of the Tender Documents issued by the Bangladesh Power Development Board, Dhaka.
0.2 General Auxiliary Systems
All the auxiliary systems needed for the trouble-free operation of the unit have to be designed accordingly.
The main auxiliary common systems are listed hereunder:
This list is not limited to the systems below, but the contractor has to supply, erect and commission all the general auxiliaries necessary for the operation of the unit at M.C.R:
• Coal Processing and Coal conveyor system • Ash handling, ash transport and ash pond
• Raw water system, dc-mineralized water and potable water • Waste water treatment system
• Pressurized air system • Laboratory
• Auxiliary closed circuit cooling system • The fire fighting system
• All ancillary buildings and services • 6.6 KV and 440/220 V switch-gear rooms • Switchgear room and "relay room'
0.2.1 Purpose of the Plant - intent
It is the intention of the Bangladesh Power Development Board to install a thermal power plant unit for a total capacity of 250 MW at the Barapukuria Steam Power Plant, in order to meet the electricity power demand.
The Plant shall be coal fired and equipped with reheater and all auxiliary and ancillary systems.
The Contractor shall cover all works for the Engineering, procurement, construction and commissioning of the whole Plant on a turnkey basis.
In order to transmit the generated electrical power to 230 kV grid network a step up power plant substation shall be included.
The boilers shall be open-air installed for firing with coal.
The steam turbine condensers shall be - water - cooled. In order to cool the condenser cooling water, cooling towers shall be constructed.
The equipment of the Plant shall be designed in accordance with the re-quirements contained in the Tender Documents and as illustrated on the Tender Drawings attached.
Highest reliability and availability, convenience of operation and maintenance, neat and orderly arrangement, are of utmost importance. The functional requirements of the various systems and the pleasing physical appearance of the completed Plant shall also be taken into account.
Due care shall be undertaken concerning the environmental impact out of the Plant and sufficient protective measures shall be incorporated in the design of the Plant for envirolUl1ent protection especially on air pollution, water pollution and noise. The environment protection measures shall be done in accordance with the Environment Protection Guidelines of UNDP, ADB, World Bank and Environmental Protection and Emission Control Standards of Bangladesh.
In all instances, the listing of items of the Plant shall be understood as general, and shall include upon completion, even if not specifically men-tioned, other necessary components and appurtenances required for proper, continuous and reliable commercial operation of the complete installation, including any and all auxiliary and ancillary systems.
0.2.2 Site conditions - environmental conditions
The following information on local conditions is investigated or compiled by the Owner/Owner's Representative. The Contractor is hereby in no way relieved from his duties of carrying out the investigations required for satisfactory performance of his works, before issuing the Bid and during execution of the works.
0.2.2.1 Location of site
Barapukuria power Plant site is located in flat land of the Northwestern "corner" of Bangladesh at about 45 km east of the district headquarters of Dinajpur, 20 km east to the border of India. The north-south gauge railway passes through the east part of the site.
The site is located about 1 km north of the coal mine mouth under construc-tion.
The only large industrial area nearby is this coal mine including its residential complexes.
The nearest town is Phulbari, a Thana (Upazila) headquarter as primary administrative center of the country. Phulbari is located about 6 km south of the site.
The major railway junction and surrounding township Parbatipur is about 16 km to site. The railway is connected to site.
The Maddhapara Hard Rock Mining Project, a separate large scale indus-trial project is located 12 km east of the site.
To reach site from Dhaka by car needs approximately 6 - 7 hours at normal climatic conditions.
The closest airport to site is Saidpur. It takes about 1 hour by car from site to the airport. The airport is in operation now.
Metalled road is connecting Dinajpur, Phulbari, Parbatipur, Saidpur and site.
The area is situated at approximately 30 m over sea level. The groundwater flow goes from north to south. For cooling, industrial and housing purposes of the existing 2x125 MW plant, the ground water is being pumped from deep wells gathering area at north of site. Discharge water from coal mine after required treatment will be used as cooling water and the existing deep tube well water will be used for potable water & demi water production of the proposed 250 MW. The waste water/sewage water after suitable treatment shall be dumped in a soakaway at the south site of site.
The bottom ash from the boiler and the fly ash from boiler &electrical precipitator shall be dumped in a pond on site. These ashes shall be transported wet and during the dry time of the year the ash shall be wetened by water. The water leaving the pond shall be treated in such a way that it will be suitable for irrigation or for pumping away to the nearby river Tillay.
A dry ash conveyor transportation and dumping system shall be considered as an option.
0.2.2.2 Transportation and access road for site
Access road for site for the facility of transportation, a metal road from the end of Parbatipur/ Fulbari up to Barapukuria Power Station site is being used.
Transportation for construction and erection material
In Bangladesh, inland transportation of all imported materials is done by rail and road.
In general, the ordinary equipment and materials can be transported to the requested places by road and rail. However, a bulk of heavy equipment and machinery such as Generator Stator, Steam Drum and etc. for the coal fired power Plant are difficult to transport to near the project site other than waterway.
Loads probably more than 150 t will need to be transported for the Power Plant. A scheme that the Contractor of the Power Plant may consider most feasible would be to transport the equipment by river upto nearest possible location and then to transport by rail or road.
The Contractor shall fix up the transportation possibilities in detail for the tender.
0.2.2.3 Meteorological condition
0.2.2.3.1 General
Bangladesh has a subtropical monsoon climate and weather patterns are governed by the south-east Asian monsoon system. The year can be roughly divided into the rainy season from May through September and the dry season from October through April. Meteorological information relevant to the Barapukuria site is available from weather stations at Dinajpur (880 41'E, 25° 38'N) and Rangpur (89° 15'E,25° 45'N). These stations are about 30 km west and east respectively from the Plant site. The data are available at Bangladesh Meteorological Department.
0.2.2.3.2 Rainfall
Rainfall from May through September contributes over 85% of the annual total. However, rainfall intensives tend to be high and concentrated in a-comparatively small number of heavy storms, even when monthly rainfall figures are relatively low. The monthly precipitation data are as follows (in
mm):________________________________________________________________
Average in
Dinajpur
Average in
Rangpur
Peak
at one day
Maximum
per month
January
11
6
February
13
15
March
16
27
April
70
110
May
241
307
85
307
June
297
499
140
700
July
592
660
142
640
August
442
430
132
442
September
307
412
431
890
October
144
120
104
242
November
7
7
December
16
17
Annual
2,008
2,812
0.2.2.3.3 Temperature and humidity
The data of temperature and humidity are as follows:
(According to the temperature data in 1988, the maximum temperature is 40°C and the minimum temperature 10.6°C. The mean temperature is about 25°C and relative humidity is generally high.)
The wind in Barapukuria changes its direction according to seasons. The wind tends to blow from the west, or in dry season from northeast and from the east or the southeast in rainy season. The predominant wind direction is generally east-west. The wind speed is relatively moderate and it is said that there is also a high proportion of calm days through the year. Dinajpur Rangpur Max. Temp. in '88 (0C) Min. Temp. in '88 (0C) Mean. Temp.81 - 88 (0C) Mean Hum.'81 - 88 (%) Max. Temp. in '88 (0C) Min. Temp. in '88 (0C) Mean. Temp.8 1 - 88 (0C) Mean Hum.'8 1 - 88 (%) January 24.9 11.6 18.4 70 25.3 11.7 16.8 79 Feb. 27.5 14.2 70.9 61 29.0 145 19.0 71 March 33.5 13.5 25.4 54 33.7 12.6 23.6 63 April 40.0 10.5 28.0 57 37.5 16.8 26.5 69 May 36.3 19.0 28.2 70 35.6 20.8 .27.3 79 June 37.5 23.8 29.0 76 36.3 23.9 28.7 84 July 34.0 23.0 28.5 82 34.1 22.5 28.4 87 August 36.7 22.1 29.3 82 32.4 26.2 28.8 85 Sept. 32.0 25.6 28.4 84 31.8 25.4 27.8 87 Octobe r 31.5 22.2 27.5 76 31.4 22.6 26.2 84 Nov. 28.8 16.4 23.7 70 28.3 17.5 22.1 79 Dec. 26.5 13.1 19.6 72 26.0 14.1 18.3 81 Annual 32.4 17.9 25.6 71 31.8 19. 1 24.5 79
0.2.2.3.4 Wind
2 2 Monthly average prevailing wind speed (knots and direction/lknot = 0.514 mis)
Rangpur (1979- 988) YE
AR JAN FED MAR APL MAY JUN JUL AUG SEP OCT NOV
SPD DIR SPD DI R S P D DI R SPD DI R SP D DIR SPD DIR SPD DI R SP D DI R SP D DI R SPD DIR SPD DIR SPD 197 9 3 N S N 6 NNW 5 S 3 S 5 ES 4 SE 5 SE 5 S 3 N 3 N 3 198 0 4 W 4 NE 4 E 3 E 4 E 4 SE 4 SE 4 SE 3 S 4 NE 3 NE 2 198 1 4 NE 3 S S W 5 NE 3 E 3 S a.n. n.a. n.a. n.a. .n.a n.a. 3 W 4 NE 4 198 2 4 W 5 W S W 4 E 4 E 4 E 4 SE 5 SE 3 NE 4 NE 4 NE 4 19& 3 4 NE 4 W 6 W 7 W 4 E 4 SE 4 SE 3 SE 4 E 4 NE 4 NE 3 198 4 4 NE 4 W S S 4 E 4 E 5 E 5 S 6 SE 5 S 5 S 5 NE 5 198 5 5 NE 4 NE 6 E 5 E 6 E 5 ES 5 SE 6 SE 5 SE 4 E 5 NE 4 198 6 5 NNE S w 7 W 6 E 5 E 5 E 5 E 5 SE 1 E 5 NE 5 E 4 198 7 4 NE 4 NE S NE 6 E 5 SE 4 E 5 SE 5 SE 4 E 4 E 4 NE 4 198 8 4 NE 5 E 4 E 6 E 6 E 7 E 4 SE 5 SE 4 S 5 NE 5 NE 4
2 3 Monthly average prevailing wind speed (knots and direction/1 knot - 0.514 m/sj
Dinajpur (1981 - 1988)
YEA
R JAN FEU MAR APR' MA\' IUN JUL AUG SEP ocr NO\'
SPD DIR SPD DIR SPD DIR SPD DIR DSP DIR SPD DIR SPD DIR SPD DI R SP D DIR SPD DIR SPD DI R SP D 198 1 6 NW 7 NW 8 W 8 NE 7 NE 6 NE 6 NE 6 NE 3 E 2 W 2 N 5 198 2 3 NW 4 W 3 W 3 E 3 E 3 E 2 SE 3 E 2 E 2 NE 2 W 2 198 3 2 NW 3 W 4 W 5 E 3 E 2 E 2 S 3 SE 3 E 3 E 2 NE 2 198 4 2 W 4 W 4 W 3 E 3 E 3 E 2 E 3 E 2 SE 2 E 2 NE 2 198 5 3 W 3 W 5 W 3 E 3 E 2 E 2 E 3 E 2 E 3 E 2 NE 2 198 6 2 W 3 W 5 W 3 E 3 E 3 E 3 E 2 SE 2 E 2 E 2 E 2 198 7 2 W 3 W 3 E 3 E 2 E 2 E 3 E 4 E 2 E 2 E 2 NE 2
2 4 198
2 5
0.2.2.3.5 Earthquake
General
Bangladesh is historically less affected by earthquakes. During the last some one hundred years widespread damages were caused by only the Great Earthquake of 1897 which had its epicentral tract in the Shillong plateau. Two other major earthquakes, the Bengal Earthquake of 1885 and Srimangal Earthquake of 1918 caused severe damages only in limited areas surrounding their epicenters. The present geological information does not indicate existence of seismically active faults within the country. However, north and east of Bangladesh, there are areas of high seismic activity in India and Myanmar and earthquakes originating in these areas affect adjacent regions of Bangladesh.
Seismic zoning map
According to the Final Report on "Seismic Zoning Map of Bangladesh and Outline of a Code for Earthquake Resistant Design of Structures (1979)", Bangladesh has been divided into three seismic zones. The Seismic Zoning Map of Bangladesh is shown in Annex. The northeastern part that includes the towns of Sylhet, Mymensingh and Rangpur are in Zone I, the most active seismic zone where earthquake shock of maximum intensity of IX of Modified Mercall Scale is possible. Zone II includes the towns of Dinajpur, Bogra, Dhaka and Chittagong. The project area is included in Zone II. The horizontal seismic coefficient = O. 15 g.
Code for earthquake resistant design of structures
The main aim of the code for earthquake resistant design of structures is to ensure that structures are able to respond to shocks of moderate intensities without structural damage. This code is meant only for normal buildings with height no more than 200 ft. In case of taller building, a dynamic analysis must be performed, with the ground acceleration inputs appropriate for the probable maximum intensity for particular zone. According to this code, the shear force at the base of a building is given by the following formula:
v =
Z.I.K.C.S. W
Where Z : Basic horizontal seismic coefficient (0.06 for Zone II)
I : Importance factor
(1.5 for important facilities, 1.0 for others).
K : Structural system factor
(varies 0.67 - 1.33 according to structural systems). C : Structure flexibility factor
(varies 0.20 - 1.0 according to the fundamental time period of a building)
S : Soil foundation factor
(varies 1.0 - 1.5 according to the combination of soil type and foundation type)
w : Design vertical load
2 6
0.2.2.3.6 Flood water level condition
The elevation of the site area is geodetically higher than the other parts of Bangladesh. Therefore, the flood damage is "less" than that of the other regions. According to the resident in the vicinity of the site area, the maximum flood level in 1988 was less than one meter above the ground level of that time. Accordingly, during construction of unit no. 1 & 2 the Plant area was filled approx. 2 m high from that ground level to protect the Plant facilities from the flood. For the flood protection, the railway is situated on an embankment which is 1.5 m to 2.0 higher than the ground level.
Therefore major earthfilling is not required. However if ground level of any area of the proposed plant is found lower, it shall have to be filled up to the level of existing plant. Underground piping and cabling shall be installed in waterproof ducts which shall be equipped with lighting and fire alarms and which shall be accessible for the maintenance staff.
Geological conditions
The stratigraphical sequence has been divided on purely litho logical grounds into the following groups:
Madhupur Clay (Recent - Pleistocene)
Dupi (Tila Formations) -Upper (Pliocene)
- Lower (Pliocene-late Miocene)
Gondwana Group (Permian) - Upper Coals Sequence
- Seam VI Sandstone Sequence - Seam VI - Lower Sandstone Sequence - Tillites Dasement (Pre-Cambrian)
The outline of Madhupur Clay and Dupi Tila Formation are as follow:
Bulk Density : 1.91 - 2.19 t/m3
a)
Madhupur clay
The Madhupur Clay formation was found across the entire site beneath a thin soil horizon. It varies in thickness between 3 and 15 m, but is generally 10-12 m in thickness. Lithologically, the fonnation comprises series of firm and stiff silty clays interlaminated and interbedded with silts and siIty sands. The silt and sand horizons increase in frequency to the base of the formation. The geotechnical and hydrogeological characteristics of Madhupur clay are summarized as follows:
2 7
Shear strength of Madhupur clay
Cohesion (kN/m3) Shear
Resistance Angle
Shear box test 119 o i CO CO o
Undrained multistage triaxial test 30~85 17°~ 11.6°
Permeability: 9.79 x 10 - 5 - 5 X 10 - 7 m/s
Ph: 6.8 - 7.4
b)
Dupi Tila formation
Dupi Tila formation is divided into two groups, the upper and the lower.
The upper Dupi Tila formation is dominated by sands between 94 m and 120 m in thickness. The lower Dupi Tila formation, which is dominated by clays, is located In the southern part of the coal deposit area and not present in the power Plant site.
The upper Dupi Tila formation, with the average thickness of 107 m is divisible into two main units:
The upper unit: average 65 m in thickness, of micaceous gray sands and gravels with occasional bands of silt and clay. The lower unit; approximately 40 m in thickness, of orangebrown, slightly micaceous sandstone, generally finer than the upper unit with more frequent thin beds of slit and clay.
The geotechnical and hydrogeological characteristics of the upper part of the upper Dupi Tila formation are summarized as follows:
Bulk density: 1.92~2.00 t/m3
Shear strength of upper Dupi Tila formation
Cohesion (kN/m1)
Shear Resistance Angle
Shear box test 130 24.5°
Triaxial test
Undrained multistage o i
"3-2° - 4°
Consolidated drained 62 2°
Unconsolidated undrained 16 27.5°
• These tests were carried out on undisturbed samples of cohesive materials such as silt or clayey silt of the Upper Dupi Tila formation.
2 8 Permeability
No permeability test has been carried out for this formation. However, the permeability of this formation is considered larger than that of Madhupur Clay, judging from its soil composition.
pH: 7.2
Topographic conditions
The project area in Dinajpur district, between Phulbari and Parbatipur is situated in the deltaic plain of the Jamuna and Padma Rivers. It is flat and its altitude is about 30 m above mean sea level, which is relatively higher than the other areas of Bangladesh.
0.2.3 Layouts
The detailed arrangement shall be proposed by the Contractor under consideration of easy maintenance, access, short links for piling and cabling, interfaces to the power grid.
The plant area shall be developed upto existing plant level (if required). The ash pond shall be lowered below the natural ground for about 3 m and shall be provided with bud walls up to + 5 m above the natural ground. The park area shall remain at about natural ground level with the exception of the outfall canal.
0.2.4 Configuration
One coal fired boiler with turbine generators represent the core components of the Plant.
The cooling requirement of the Plant shall be accomplished by a wet cooling tower system. For ash transport, the cooling tower blow down water shall be used. But for commissioning fresh water is required.
0.2.5 General technical requirements of the Plant
0.2.5.1 Design requirements
The Plant shall be designed for base load operation. Also extended shorttime operation and longer periods of part load down to synchronized minimum load must be possible without restrictions.
The design lifetime of the Plant shall exceed 200,000 operating hours.
The thermodynamic process of the Plant is to be optimized by the Tenderer/ Contractor according to the proposed equipment.
The Plant shall be built-up of one independently operable power unit.
An economic optimal balance between investment, maintenance expenses and Plant availability (planned and unplanned outages) shall be proposed .
2 9 Redundancy concept
Due to the block-wise structure of the Plant, the Tenderer/Contractor may propose only 1 x 100% implementation of very costly major equipment like: cooling water pumps, compressors, etc., but by no means for the boiler feed water system.
These moderate investment solutions can be accepted if the Tenderer/
Contractor proves with corresponding spare parts and maintenance proposals that overall an optimum economic solution will result; otherwise 3 x 50%, or 2x 100% solutions are preferable.
The Tenderer/Contractor shall
a)
design and configure all components of the Plantb)
propose spare parts stock (spare part building and content)c)
propose maintenance works in such a way that:• unplanned outage time of power unit shall not exceed 1.7% of the time in a calendar year
• Unit is available during 99.2% of the time in a calendar year.
0.2.5.2 Outline description of generating facilities
a)
Installed capacityb)
Annual utilization factorc)
Overall gross efficiencyd)
Plant starting scopee)
Unit auxiliary consumptionf)
Annual coal consumption250 MW Net 80%
38.0% (minimum) —output el. at Gen. terminal/input coal net calorific value at all conditions of warm/hot or cold.
6.3% (max.)
about 700,000 tons (approx.)
g)
Ash disposal area (proposed) 3 75,000 m2h)
Design life time of the power Plant shall exceed 200,000 operating hours.0.2.5.2 Main powerhouse including control building
The main powerhouse which includes the control complex need to be a multilevel multi-area structure. It shall be a seismic proof building of conventional steel braced frame construction in the upper portion with foundations of reinforced concrete.
3 0
The area of the Power Station for protection against flooding is considered to befilled up to the existing
plant level (if required) to protect the Power Plant against
the flood.
The coal storage area shall be paved. drained and partly covered. The drain shall be discharged to the ash pond. The ash pond shall be excavated. fertile soil to be stored aside and the pond shall be lined with clay. The ash pond overflow shall be treated to meet the relevant standards and shall lead via outfall canal to the Tillay river. Try ash storage shall be considered as an option.
The treated sewage water may be discharged to the Tillay river.
The ash pond and the park shall be separated from each other and the Plant by fences and gates.
0.2.6 Mode of operation
All the equipment and the facilities shall be suitable for safe and economical continuous and also for short-time operation under the extreme ambient air. water and coal conditions specified.
The design of the Plant shall be based on the following operation and dispatching requirements:
a)
The power unit shall be capable of following the daily and seasonal demand profile of the electrical network.b)
The power generation shall be fully dispatch able within the technical limits of the Plant to be specified by the Tenderer, but at least between 40% and 100% of the net power output of the Plant without supporting fire.c)
Full compliance with the conditions of the admissible air pollution is required within 40 - 100% of power unit's power range.0.2.7 Environmental conditions and emission control standards
0.2.7.1 Environmental conditions
The present environmental conditions in Barapukuria are as follows:
a)
Atmospheric qualityThere are no industrial activities to pollute air within a radius of 10 km from the planned Power Station site (except existing 2 x 125 MW coal fired units). Though there are effects of automobile, etc. emission and smoke generated by burning after harvesting and from houses, the air pollutant concentration is expected to be at a very low level.
b) Water quality
As prospective raw water sources, Coal mine discharge water (for normal use) and wells (during emergency case to meet at least 50% of total requirement) are considered. Water quality is given in Annex.
3 1
c) Soil quality
The study team collected the soil (in the year 1998) from the site for analysis and the results are as follows:
Analysis result of metal content in soil
MgO CaO Na20 K20 B203
Item % mg/kg
Barapukuria soil
0.7 0.2 0.2 2.2 427 201
0.2.7.2 Ambient standards and emission standards
The standard values are given in Annexes. The standard values for effluent are also given in Annexes.
Analysis result of water dissolving and pH of soil
Item pH EC pS/c m Mg1 + + C M C O 0 K+ Na + b 3+ mg/kg Barapukuria soil 6.5 712. 0.1 0.2 0.2 1.0 <0.1
0.2.8
Fuel0.2.8.1
Characteristic of coalThese data should be compared with new data which will be analyzed by the coal mine and examined by the personnel of the Power Plant. After having further investigation on the Barapukuria coal, the coal analysis data for the planning of the boilers at the Owner/Owner's Representativeing stages should be finalized.
At the time being the proximate analysis (average characteristics of whole seam) is as follows:
Net Calorific Value 23.500 MJ/ kg
Gross Calorific Value Air Dry Basis 25.540 MJ/ kg
Dry Basis 26.000 MJ/ kg
Total moisture Receive basis 8.20%
Inner moisture Air dry basis 1.71%
Fixed carbon Receive basis 46.92%
Air dry basis 50.24%
Dry basis 51.11%
Ash Content Receive basis 17.81%
Air dry basis 19.07%
Dry basis 19.40%
Volatile content Receive basis 27.07%
Air dry basis 28.98%
Dry basis 29.48%
Sulfur Dry basis 0.16%
Ultimate analysis (dry ash free basis)
Carbon 83.0% Hydrogen 5.1% Oxygen 9.4% Nitrogen 1.7% Sulfur 0.77% 99.97%
0.2.8.2 Ash
At the time being the following ash analysis (oxides in ash dry basis) (mean % of whole seam) is available:
Si02 54.4% AI2O) 35.6% Fe203 2.9% Ti02 3.2% Mn304 0.11% eaO 0.56% K20 0.66% Na20 0.06% MgO 0.18% P20S 0.46% SO3 0.13%
Ash fusion temperatures of seam Vi (mean °C) (reducing atmosphere)
0.2.9 Waste and waste water
Water supply of the Power Plant will be covered by Coal mine discharge water (for normal use) and deep tube well water (during emergency case to meet at least 50% of total requirement). To cope with the water requirements of Power Plant consumers it is necessary to install water treatment and storage facilities. The design of the storage facilities shall consider especially start-up and routine maintenance periods in the Power Plant and water treatment plant.
Chemical polluted wastewater and sewage wastewater has to be treated to comply with the relevant wastewater emission standards. Chemically polluted wastewater shall be discharged after treatment to the ash pond
The waste water from the ash pond shall be discharged to the Tillay river. The water which will be discharged to the Tillay river shall be treated also. This water shall be suitable to be used in the park for fountains as well as for irrigation purposes. Initial Deformation Hemispherical Flow l,400°C l,400°C 1,400°C
0.3 Supply and Services
0.3.2 General
The scope of this Tender Specification covers all supplies and services required for meeting the purpose of the complete Plant, even if these are not expressively mentioned in the following.
The works include the following main components, where the detailed scope of supply shall be seen in the corresponding sections as listed below:
Section B1 Steam Generator Plant
Section B2 Steam Turbine Plant with Condensate and Steam System
Section B3 Coal Handling System Section B4 Air and Flue Gas System Section B5 Ash Handling System
Section B6 Water Storage and Treatment Systems Section B7 Auxiliary Systems
Section B8 Electrical and Associated Works Section B9 Instrumentation and Control Works
Section B10 Communication, Clock and Surveillance Systems Section B11 Civil Works
Section B 12
Workshops, Stores and Vehicles
Before purchasing of any material the documentation for each major component/system shall be approved by the Owner/Owner's Representa-tive/Owner/Owner's Representative.
0.3.2 Scope of Owner/Owner's Representativeing services
The Owner/Owner's Representativeing services of the Contract refer to the complete specified plant and covers following services:
The Contractor shall actively participate in drawing-up of all required licensing applications.
All services shall be performed by the Contractor to effect the required permits to commence the works and operate the Plant, including but not limited to:
• clarifications with authorities
• participation in all clarification meetings
• boiler operation permission by independent authority • and all other services as required.
All fees required due to a split-up into multiple applications shall be covered by the Contractor.
0.3.3 Common equipment and services
The following supplies and services are to be included in the corresponding section prices.
0.3.3.1 General
• material and personnel costs (e.g. for testing authority staff, BPDB and if necessary also Owner/Owner's Representative's staff) for tests and in-spections which are mandated by legislation
• material costs for site inspections
• declaration of conformity with Bangladesh requirements and markings for all machines
• Owner/Owner's Representativeing design of complete supplied equipment including interface coordination
• all as-built documents (on data carriers; data formats as requested by the Owner/Owner' s Representative)
• quality control plan and safety plan
• complete documentation as set out in the tender specification • operating and maintenance manual in summary form (8 copies),
O&M manual
• detailed operating and maintenance instructions (8 copies)
• a maintenance program including a well proven maintenance management system for track keeping of all maintenance for all systems and equipment of the Plant.
0.3.3.2 Mechanical
• All necessary pipelines, valves, actuators, suitable for commissioning, operation and standstill in preservation
• all required line warm-up systems
• all connection and adaptation works for tie-in into general supply and/or evacuation systems
• all necessary vents, drains and rinsing connections as well as tundishes with covers, as far as possible aggregated to common groups of on operating level.
• all connection elements, screws, bolts, nuts, including gaskets and seals as necessary.
• all temporary installations required for tie-in measures including postweld heat treatment complete, inner cleaning, etc.
• all temporary pipework as required during connection measures
• check of required existing structures, plant components and systems and their rehabilitation where they lie within the scope of supply, or definition of required measures in good time if they lie outside of the scope of supply
• all support structures, hangers etc.
• all base frames, mounting plates, grouted in parts, rag bolts, covers, etc. • all required steel parts embedded in concrete
• all couplings and coupling guards for electric motors and other drives
• all lifting equipment and hoists (for repair work where loads exceed 50 kg) (cranes, hoists, monorails, etc.), electrically operated if lifting or lowering heights exceed 8 m
• required safety equipment, pressure relief valves, etc.
• all thermal and noise insulation including cladding as well as any other noise attenuation measures
• stairways, ladders, platforms, galleries and walkways to all plant compo-nents, including escape routes as necessary
• all necessary steel structures, stairs, ladders on platforms weather protec-tion
• all required ventilation or air conditioning equipment for safe operation of mechanical and electrical equipment, to be supplied
• all necessary corrosion protection measures for plant components and equipment stored or mounted on site up to the time of reliability test run • complete primer and top coatings conforming to color code, clarified with
the Owner/Owner's Representative/Owner/Owner's Representative • noise abatements measures
• all corrosion protection and electric trace heating for outdoor installations (e.g. gas ducts, etc.)
• complete labeling of all plant components according to the Owner/Owner's Representatives system and in plain language (English and Bangla) and Power Plant Classification System Coding (PPCS)
• all fire protection measures • all lubrication systems
• initial lubricant filling and sufficient lubricants for commissioning and reliability test run, minimization of lubricant types by screening and coordination with the Owner/Owner's Representative, up to Provisional Taking Over of the relevant Unit
• provision of all connections and temporary pipe work for steam purging of the live steam line
wood and/or plastic at all instrumentation and appendages to be installed during construction
• all standard accessories and auxiliary equipment which normally form part of the scope of supplies
• all tests, inspections and works acceptances as well as all certificates and reports of these
• exchange of filter elements following reliability test run up to Provisional Taking Over of the relevant Unit
• valve trims for purging and subsequent exchange • removal of any unused material from site
• scaffolding for all work aboveground level • insurances.
0.3.3.3 Electrical, instrumentation and control
In general, the Power Plant shall be started up, operated and switched down from the DCS.
The electrical instrumentation and control plant mainly, but not limited to, shall consist of:
all local measurements and field control loops (thermometers, pressure gauges, local regulating devices, etc.) as well as all instruments for reliability test and checks.
• all necessary electrical drives
• complete installation material, that is wiring, cabling and piping mate-rial, all needed fastenings, conduits, brackets and other supports, in-cluding the cable trays
• all required junction boxes and cubicles • all field control boxes.
• all instruments mounted on instrumentation racks • street and other outdoor lighting
• lightning protection
• electrical earthling of the equipment
• clarification of all logic interconnections: sequence, interlocking, protection, safeguarding for coordinated operation start-up/shut down of individual items of equipment.
0.3.3.4 Civil
• all necessary surveying works
• preparation of site, demolition works, removal of underground obstacles, if any
• site fill
• earthworks, drainage, excavation and refilling works • roads and pavement
• concrete and reinforced concrete works, masonry and earthing • water proofing works for pressing and non-pressing water • fire protection during construction
• roofing (non asbestos) • plumbing
• facade works/glazing works; non asbestos
• non-load bearing walls/installation partitions/dry construction works • metalwork and blacksmith work/raised flooring/doors and gates/sheet
metalwork • flooring work
• fire protection with plumbing; fire protector • corrosion protection
• crane way works • air conditioning systems
• potable water, service water and waste water, sewage water, storm water (permanent and during construction), etc.
• housekeeping during construction.(at least once a week total) • staff facilities during construction
• Owner/Owner's Representatives office
• transport of all dumping material to dump locations (at least once a week total)
• interpretation of soil bearing test • temporary fencing of construction site
• permanent wall and fencing with security road
0.3.4 Packing and transportation
• Suitable packaging and transportation of the entire scope of supplies • free construction site, on-site transportation and temporary storage
including inspections and, if necessary, ensuring the prerequisites for transportation
• disposal of packing and transportation material • customs clearance
• crane or hoisting facilities at seaport, railway, road and site • transportation to site
• unloading at site
• transportation to the place of installation.
0.3.5
Documentation
0.3.5.1 Documentation with Tender
General
• form of Tender (Data Sheets) to be completed by the Bidder • deviations from the Tender Specifications on data sheet B0/FA
• if a consortial bid is submitted, documents on the consortial agreement • description of options and alternatives offered
• completely filled in price, guarantee- and data sheets of the specifications
• list of proposed makes and vendors
• reference lists for delivery and installation of plants of similar type and size
• time schedule for Owner/Owner's Representativeing, deliveries, erection/installation, commissioning and Reliability Test Run
• complete description of the plant offered including description of the process and the equipment
• layout drawings of the plant
• dimensioned drawings and sectional views of the principal plant components
• schematics of the principal plant systems
• general descriptions of individual systems and descriptions of operation including description of start-up, shutdown and emergency shutdown procedures, tendencies showing the behaviour of boiler/steam generator, turbine, etc.
• all other documents necessary for comprehension of the offered plants and equipment
• documents on the quality assurance system
• training program and schedule for Owner/Owner's Representative's personnel.
• space requirement for construction site and equipment
• lists of spare parts for warranty period, lists of spare parts for LTSA period
• spare part storage and supply policy
• mobilization and demobilization schedule for construction equipment • method of transportation and unloading heavy cargo
Mechanical
• flow diagram of all systems
• performance diagrams of main pumps, compressors, fans, etc
•start-up curves for cold (all material on ambient temperature) and warm start up to MCR of one Unit
Steam turbine and boiler
• correction curves for variations in
• power output with normal water temperature and pressure • part load chart
Generator
Detailed descriptions/references of the main components such as:
• stator and rotor design • excitation equipment • cooling system
• power chart (generator capability curve MW, MVAr, p.f.) • no load and short circuit characteristic
Boiler
Description for the equipment offered giving information about:
• general outline of installation • extent of shop fabrication
• indicating site fabrication required • ducting including expansion joints
• insulation, as well as anchors and sheets and refractory • spray attemporator and its characteristic
• mounting, valves and fittings, including all safety valves. • description of equipment for other control system, if applicable
• NOx, CO, S02, etc. emission characteristic for coal operation versus load at full load
•
Drawings
• dimensioned general arrangement of boilers, turbines, ash extraction, pumps, fans, el. precipitator, mills, conveyors, transportation, etc. ducting including guide vanes and expansion joints, damper, isolator, platforms, stairs, ladders and stack, workshops, chemical laboratory , stores, administration building, entrance, fence and all other structures
• dimensioned front and side sectional elevations and sectional plan of the boiler, turbo group, showing drum, casing, insulation, access and observation doors and all tube banks and all accessories (conveyors, breakers, etc., all boiler pressure parts, turbine/generator details, mill, ash extractor, ash transportation, etc.
• design of the membrane walls and supporting by buckstag • Graphs, correction curves for boiler
• tentative start-up diagrams for cold start, warm start and hot start
• material diagram showing material, dimensions, highest exhaust gas temperature and highest steam temperature, design material temperature and maximum admissible material temperature and design pressure for components of the steam/water system
• change of exhaust gas temperatures over load
• variation of steam temperatures over the heating surfaces, stating ma-terials employed
Electrical system
• electrical single-line diagram
• preliminary lists of motors and electrical consumers including power demand • auxiliary power requirement of the plants
• arrangement of generator bus duct up to generator step-up transformer, HV and star-point cubicles, unit auxiliary transformer
• general arrangement of electrical equipment
• I&C power supply ,
• description of the power supply system for DC/AC systems(24 V DC and/or 230 V AC, redundancy, failure management, etc.)
• DC and safe AC supply principles
• detailed explanations to be given for the DC and safe AC principle to be provided
• construction power supply arrangement
• general arrangement of 230 kV switchyard equipment Instrumentation & Control system
Plant in their structural arrangement
• description of philosophy of the DCS with reference to • availability
• redundancy concept
• description of burner management and boiler protection system including information about redundancy concept .
• list of all subcontractors
• reference list for the DCS with indication of plant type, system architecture and size of the system
• list of package system (black boxes) Civil
• architectural outline drawings for all buildings and building structures showing the arrangement of the complete plans, inclusive of all levels and sections • site plan of the complete plant showing all buildings, building elements, roads,
landscaping etc . • schematic design of building
Maintenance
For boiler with accessories, steam turbine, generator and the total scope of supply maintenance and overhaul charts should be submitted. Both major and minor plant outages for inspection and/ or routine maintenance should be shown on the chart, together with the nature of the work to be undertaken and the expected duration of the outage. This information should also include all the auxiliary plant to be supplied under the Contract.
0.3.5.2 Documentation after award of Contract
The documents required for design, construction, installation, operation and maintenance of the entire plant shall be submitted by the Contractor in good time so as to permit the plant as a whole to be erected in compliance with the specified time table.
Only the most important documents are listed below. These documents shall be submitted sufficiently in advance for approval before award of relevant order, so that corrections and amendments desired by the Owner/Owner's Representative as well as resubmission of the documents will not result in any delays with respect to the guaranteed time table. The Owner/Owner's Representative reserves the right to request from the Contractor additional drawings, documents, etc. as may be required for proper understanding and definition of the design and Owner/Owner's Representativeing of the Plant.
General
• current list of drawings (to be updated every month) • progress reports (to be updated every month)
• erection and installation progress reports (to be updated every month) • list of subcontractors/manufacturers for approval before purchasing • proposed inspection and testing programs for approval
• detailed program for commissioning for approval
• testing documents/report of results of all tests for approval • training program for approval
• operating and maintenance manual with description and instructions for all equipment and facilities (first issue 3 months before start of commissioning and second issue before trial run (2 weeks) - OMM for approval
• as-built-documentation including drawings of all equipment • declaration of conformance with Bangladesh regulations • spare part lists for approval
Time scheduling, based on CPM
• overall time schedule for design, manufacture, supply, assembly and II commissioning broken down for the principal plant components and all construction works, stating dates for completion of any preparatory work from others which may be necessary.
• detailed erection, installation and commissioning schedule • complete list of documents with proposed submission deadlines
Mechanical Owner/Owner's Representativeing; such as, but not limited
to:
• arrangement drawings of the principal components with ducts and platforms layouts .
• arrangement drawings of all auxiliary equipment (cubicles, etc.) and ancillaries
• piping and instrumentation schematics and isometric drawings, including lists of pipelines and valves stating materials, )nominal diameters, nominal pressures, dimensions and insulation thickness of all pipes;
• plans of main pipelines including location of cable routes • characteristics of pumps, fans, etc.
• details of required auxiliary energy sources and consumer consumables (e.g. electricity, steam, chemicals, instrumentation air, working air) with condition data and consumption values
• thermodynamic diagrams
• start-up and shutdown diagrams with descriptions
• welding procedures (for workshop and site), to be approved before execution of the welding
• sectional and detail drawings of all components
• for all lifting operations (repair, maintenance, etc.) a lifting plan has to be submitted by the Contractor
• limits of coal and fuel oil properties
Boiler and accessories
• start-up charts from cold • start-up charts from warm • start-up charts from hot
• general arrangement and section drawing of the casing, stack, etc.
• detailed arrangement drawings of all equipment including all auxiliary equipment (flash tank, etc.) complete with pipes, cable tracing, steel structures, cubicles, electric consumers, etc.
• drawings and information for all relevant components such as • dimensioned details of drums and internals
• boiler and ducting support and expansion joints • tube bank support details
• list of insulation materials, showing type, location, protection, fastening and surface temperature
• boiler through flow schematics stating materials, temperatures etc. • graph of controlled and uncontrolled super heater steam temperature • diagrams, correction curves and drawings as well as p+i diagrams, etc
Electrical Engineering (Power Plant and 230 kV switchyard)
• electrical single-line diagrams • list of motors and consumers • electric motors
• starting curves (torque of motor and driven machine, time, speed) for all motors of 50 k W and more
• cable lists
• standard circuit diagrams for all different kinds of electrical consumers • circuit diagrams for all individual electrical equipment
• lists of equipment and devices
• alarm lists and lists of measuring points • earthing plans with calculations
• lightning protection plans with details of measuring locations and reports of measurements taken following commissioning
required)
• arrangement drawings of all electrical equipment • line plans of fire alarm system if applicable
• arrangement drawings showing exact location of fire alarm devices if applicable
• power and lighting installation plans
• earthing and lightning protection plans and calculations
• general arrangement drawings of the required cable trays, cable laying plans
• dimensioned drawings and erection drawings for generator, transformers, switchgear, control panels, etc., including frontal and plan views
• dimensioned drawings of generator auxiliary equipment
• dimensioned drawings of switching cubicles, generator and star point cubicles, voltage regulation cubicles, excitation cubicles etc., including equipment configurations
• calculation of mechanical stresses of switchgear rooms due to arcing faults
• short circuit calculation and determination of protection relay settings for generator protection and auxiliary electrical supplies under consideration
of protection of the entire system .
• overall protection and metering diagrams for the whole protection equipment • generator charts and exciter characteristics
Construction power line (33 kV)
Contractor will use Construction Power from the existing 33 kV substation. All arrangements shall have to be done by Contractor.
Instrumentation and Control
• list of subcontractors
• list of the overall- I&C equipment • list of spar parts
• list of "black box" systems with indication of control systems to be used • schedule of workshop tests
• manufacturer documents (manual, descriptions, etc.) for all I&C components • manuals for third party computer software
• set of all relevant standard specifications to which the equipment is manufactured
• list of instruments including code, measuring range, alarm and limit values, reference drawings
• instrument hook-up drawings
• list of control valves including operating and design data, materials, makes, types and reference drawings .
• calculations for control valves, orifices, nozzles, etc.
• Owner/Owner's Representativeing drawings of control valves (including actuators), control dampers (including actuators), orifices, nozzles, venturi nozzles
• diagram of control system architecture showing all components provided for this Power Plant in their structural arrangement
• lists of I/O point assignment • list of alarms including settings
• program listings for all application programs • logic diagrams
• description for all functional group controls • description for all closed loop circuits
• description for all safety and protection circuits • instrument loop diagrams
• typical cabling diagram showing all cable connections in a typical manner • cable list including cable coding
• cable routing plans
• interior arrangement drawings of all cubicles
• wiring and terminal diagrams for the entire I&C equipment
• arrangement drawings of central and local control/electronic rooms • mimic diagrams for control panels and desks
• detailed dimensions of panels, desks and cubicles • list of recorders
• graphic displays for monitors of options.
Civil Owner/Owner's Representativeing
• general site plan of the entire site showing all buildings and installations, traffic routes and landscaping etc.
• architectural arrangement drawings, design layouts and itemized drawings (plans and sections) to scale 1: 1 00 of all buildings and plants
• views of all sides of all buildings, scale 1: 100
• architectural drawings of each floor (plants, sections) including all necessary detail drawings, scale 1 :50
• arrangement drawings of the external plants of the site as a whole (existing, planned) with all supply and disposal facilities, roads and vehicle access and maneuvering areas, sewers, channels and culverts etc.
• detailed constructive description of the single building with regard to the structural design (structural systems, foundations etc.
• detailed specification of the buildings including information on materials and qualities for execution
• sectional elevations and roof plan • floating floors/systems
• underground services and ducts with equipment appertaining to the services • layout of roads
• principal details and sections for traffic areas, especially for ramps and retaining walls
• layouts for external works showing plants and fencing etc. • diagrams for ventilations
• diagrams for supply systems of all buildings • schematic details for plumbing
• structural drawings pertaining to outlet and inlet water channels and tie-in to existing channels
• foundations and other underground concrete works for the transformer area • civil drawings of roads and if applicable for up rated bridge over cooling water
outlet channel.
Especially for Workshops, Stores, and Laboratory:
Preliminary In weeks
• Room sheets for all workshops, stores and offices
• Requirements Documents describing
the inventory computer program and
the maintenance program from the users' point of view
• Program Specification i.e. a complete verbal description of the inventory
program with logic diagrams
• Test Plan and Procedures Documents
describing how the inventory program
is to be tested
• Complete user manuals describing how the user will run the program
Designation Final In weeks 1 9 23 1 9 23 29 33 39
Handbook of the computer program language for managerial activities Description of equipment suitable for instructing computer operators
All documentation suitable for maintenance of the complete Power Plant equipment by the plant personnel without any help of the manufacturer's staff
Preventive maintenance schedules
All documentation necessary for ordering
Each and every spare part which may be
necessary during the lifetime of the Power
Plant down to IC, transistors, etc. Proposal for first outfit with raw materials
Spare parts list
List of all machines, apparatus and other
equipment for workshops, stores and
vehicles with manufacturer's name and
ad dress, equipment type and classification code
2 0
after availability of maintenance instructions of the corresponding suppliers 874 3
2 3
3 9
2 6
Stock-keeping lists (including spare part lists containing requisition before provisional before provisional
taking over taking over
• Maintenance assembly and adjustment , „ . . ,
, - before provisional drawings ^ , taking over at provisional • As-built drawings - . , • taking over
2
9
176 5
20.3.5.3 Requirements for documentation
Unless agreed otherwise, six (6) hard copies and three (3) sets of electronic copies of all documents are to be submitted in English language for approval.
There shall be no installation and/or any commissioning activity without the relevant documentation approved by the Owner/Owner's Representative.
The final documentation shall be submitted in English language. Diagrammatic symbols for electrical drawings
Diagrammatic symbols complying with IEC 27, 34, 37 and 117 are to be used for selling out the circuit and terminal layout.
0.3.6
Erection, commissioning and testing• Complete erection' of the total scope of supply up to operational readiness. This includes mobilization and provision of the required supervisory staff, skilled and unskilled personnel, as well as of installation scaffolding, cranes, hoists, equipment and materials, personnel accommodation, prescribed tests and inspections
• commissioning and optimization of all plant components as well as conducting all necessary measurements
• supervision of erection, commissioning and Reliability Test Run of complete supplied equipment
• all testing as specified
• operation, training of the Owner/Owner's Representative's staff and maintenance up to Provisional Taking Over of the relevant Unit.
0.3.7 Training of Owner/Owner's Representative's personnel
0.3.7.1 General
During erection, commissioning and Reliability Test Run, the Owner/Owner's Representative's operating staff is to be familiarized with the functions of the system. In the training schedule, prior instruction of selected members of staff shall be taken into account.
