- •5.3 Test Instructions
- •Table of Allowable Rapid Fluctuations of Certain Key Measurements.
- •5.5.6 Data Verification
- •5.6 Results
- •5.7 Analysis
- •5.7.1 Method of Trending Results
- •5.8 Report
- •HP / IP Turbine Efficiency Test
- •Typical Control Room Data Sheet
- •Point ID
- •Condenser
- •Annexure - I
- •CONDENSER DESIGN DATA
- •Annexure - II
- •TEST READINGS
- •Annexure - III
- •TYPICAL CONTROL ROOM READINGS
- •UNITS
- •kcal/hr
- •3.0 Working And Test Set Up
- •TEST ENGINEER (TE):-----------------------------------------
- •ENGINEERING REVIEW
- •PERSONNEL REQUIRED
- •TEST CREW ORIENTATION
- •REFERENCE DRAWINGS
- •LEAK DETECTOR OPERATION
- •TEST LOG
- •ACCESSIBILITY
- •CONTROL ROOM / UNIT DATA
- •LIST OF INSTRUMENTS & ACCESSORIES REQUIRED FOR AIR-IN-LEAK TEST
- •L. P. Turbine
- •*Total time from leak sensing by instrument to retrieval to zero (0)
- •Unit
- •LOW FEED WATER TEMPERATURE
- •EXCESSIVE MAKEUP
- •HIGH WATER LEVEL
- •EXCESSIVE NUMBER OF TUBES PLUGGED
- •HIGH DRAIN COOLER APPROACH TEMPERATURE (DCA)
- •DRAIN COOLER INLET NOT SUBMERGED
- •IMPROPER SETTING
- •EXCESSIVE TUBE BUNDLE PRESSURE DROP
- •HP Heater Test Data
- •Control Room Readings
- •FAULT TREE
- •LP Heater Test Data
- •Control Room Readings
- •FAULT TREE
- •LOW FEED WATER TEMPERATURE
- •EXCESSIVE MAKEUP
- •WORN VENT
- •HIGH WATER LEVEL
- •TUBE LEAKES
- •HEADER PARTITION LEAKS
- •EXCESSIVE NUMBER OF TUBES PLUGGED
- •HIGH DRAIN COOLER APPROACH TEMPERATURE (DCA)
- •DRAIN COOLER INLET NOT SUBMERGED
- •IMPROPER SETTING
- •EXCESSIVE TUBE BUNDLE PRESSURE DROP
- •EXCESSIVE NUMBER OF TUBES PLUGGED
- •Unit
- •BFP Test Data
- •Typical Control Room Readings
- •Boiler Feed Pump A / B / C
- •Typical DAS Readings
- •Description
- •CONTENTS
- •1.0 Introduction
- •3.1 Process Description
- •4 References
- •4.1 ASME Performance Test Code 4.2 – 1969, Coal Pulverizers
- •5 Prerequisites
- •(A clean air test is performed with the primary air to the mill at full load normal conditions with the mill out of service (normal primary airflow, no fuel flow)).
- •Avg. Velocity
- •6.4 Isokinetic Coal Sampling
- •4.5.2 Unburned in Flyash at Economizer Outlet
- •Summary
- •Dry Gas Loss
- •Gas Temp Leaving AH - Corr. to Design Ambient
- •OBJECTIVE : Determine the amount of Power being consumed by the primary plant equipment.
- •TEST ENGINEER (TE):
- •REFERENCE: ASME PTC 19.6-1955 and TVA Proc. No. TS/PERF/RTST/FOS/16.0
- •BILL OF MATERIALS
- •BILL OF MATERIALS
- •Note: Quantities to be decided as per the requirement
- •2.4 PORTABLE DATA ACQUISITION SYSTEM
- •BILL OF MATERIAL
- •Acquisition
- •EQUIPMENT: Thermocouple wire for flue gas temperature measurement
- •2.9 HIGH VELOCITY THERMOCOUPLE (HVT) PROBE
- •2.11 HIGH VOLUME FLYASH SAMPLER
2.4 PORTABLE DATA ACQUISITION SYSTEM
1.0General
This specification covers the requirements for a fully portable multi-channel, distributed data acquisition system for performance-cum-efficiency monitoring for use in different areas of coal-fired thermal power stations. The areas to be monitored are boiler, turbine and related auxiliaries. Such a system shall be based on highly accurate I/O modules, multi-dropped on standard high-speed data networks (LAN), working in conjunction with IBM-PC compatible computers.
2.0System Details
2.1Size of the System
The set will consist of a data acquisition system for suitable number of measurement channels each of Type –A and Type – B (please refer Para 2.4 for Type A and Type – B). The system shall be compatible for future expansion to about at least 500 measurement channels with add-on I/O modules only. The hardware and software to be supplied shall be capable of handling future expansion needs through configuration by software and addition of add-on hardware modules. The I/O module capacity shall be for 16-20 channels each for Type A and Type B for a convenient size.
2.2Portability
The proposed equipment is to be used for acquiring and processing field (sensor) inputs in different areas of the thermal power plant. All components of the system offered, including Man Machine Interface (Lap Top PC) shall be light in weight and shall be of a profile that permits easy portability, requiring the least manpower for shifting the system modules and components to the measurement sites. The I/O modules shall be enclosed in portable enclosures which should be dust and moisture resistant .
2.3Site Ambient Conditions
The measurement locations shall be both indoors as well as outdoors. The field I/O modules shall be rugged enough to withstand the hostile conditions prevalent in the sites and shall have a degree of protection of which is conforming to plant
environment. Further, these modules shall be suitable for operation at ambient temperatures up to 45o C and Relative Humidity 90%.
2.4I/O Module
The A & B type modules shall be capable of accepting following types of inputs described below:
Section: 2.4 Page 1/10
2.4.1Type A: Capable of accepting two types of inputs, i.e.; all 4-20 m A DC transmitter output or all 4 wire PRT100 RTDs, or any mix of the two.
Inputs a) RTDs – (PT-100 ohms) – 4 wire
b)Transmitter – 4 – 20mA – 2 wire type (with 24 DC power supply for powering the transmitters)
Type B: Capable of accepting Type K thermocouples with built-in CJC. T/C open circuit detection features shall be incorporated in the hardware / software.
2.4.2Each I/O module shall support 4 – 20 m A inputs from 2 wire smart transmitters and shall therefore have suitable internal or external signal conditioning circuitry and provision for 24 Vdc power supply with individual channel having fuse and LED indication integrated with the unit and receive the current output ( 4 – 20mA) from these transmitters.
2.4.3Each of the I/O modules shall have a capacity of 16 to 20 input channels each for type A & type B, and have its own input multiplexer, ADC (Analog-digital converter, minimum 16 bit), communication and supervisory circuits, etc. The minimum isolation voltage between any two input channels and channel to ground will be at least 200 V and a Common Mode Rejection Ratio (CMRR) of 100 dB or better and Normal Mode Rejection Ratio (NMRR) of 50 dB or better, at 50 Hz (mains frequency in India) or better with suitable input guard facilities for noise rejection.
2.4.4The I/O module shall be ‘addressable’ and have appropriate switch settings in the units for system configuration. These modules shall be software selectable.
2.4.5Input power supply for I/O module shall be 230 V AC (+ / - 10%), 50 Hz (47 to 53 Hz)
2.5Module Error Indications
Suitable visual indications shall be provided by the I/O module in case of ‘Calibration’ and ‘ADC’ errors to facilitate calibration and repairs. The indication shall be on module and diagnostic messages could be the on the computer to which it is connected.
2.6Input / Output Terminations
Since the proposed system is for portable and highly precise measurements, it is essential that all terminal points shall support snap on screwed connections, as per industry standards, to eliminate signal leakage at terminals and consequent loss of measurement accuracy.
Section: 2.4 Page 2/10
The termination will be as under:
Type A: 8/9 pin connectors (male & female) which can be configured for 4-20 mA DC as well as PRT – 100 RTDs 4 wire so that no hard wiring in the field is needed.
Type B: 2 pin thermocouple grade material connectors to be provided (male & female) for on-site connections (Omega make or equivalent)
2.7Service Requirements
Since the field measurements may at times last several days, it should be possible to leave the field connections and cable connections undisturbed at measurement sites.
2.8Data Network & Cabling
2.8.1The offered system should support high speed data transmission and all measured results shall be returned to the host (PC) in less than 5 second, even under full system capacity of 500 channels with a guaranteed bus (communication link) spare duty cycle of not less than 20% per second.
2.8.2There should be no deterioration in system performance or data transfer rate up to one km of network cable length.
2.8.3Networking cable (Beldon 9207 or equivalent) to be supplied with the system is as specified below:
1. |
20 meters each |
)( |
quantities to be selected |
2. |
50 meters each |
)( |
as per the need |
2.8.4Suitable axial connectors for use with the network cable should be supplied to facilitate easy connection of the network cable between the I/O modules.
2.8.5Communication to Lap Top PC
2.8.5.1The distance of communication from the field unit to the lap top PC could be up to 1.0 Km with/without modem (to be supplied with the system if required)
2.8.5.2RS-232 communication port for direct communication link to Host PC or suitable communication link
Section: 2.4 Page 3/10
2.8.6In case of remote transmission the linking/docking units to host computer link should be incorporated in the system. Input scans shall return to host every 1 second (selectable).
2.9The Power Supply
The power supply for the modules should be a mounted/ in built power supply with the system or integrated with the system.
2.10Interface With Host (Main Machine Interface)
Suitable interface card for communication between the supplier’s LAN and the host machine shall be offered to make the system compatible to work with PCs. The said interface card shall be suitable to handle up to 500 channels in order to facilitate easy expansion in future.
2.11Application Software
2.11.1The system shall be supplied with suitable application software to acquire, process the data and convert to engineering units. It shall cater to a minimum of 100 channels presently, but shall be easily upgradable to 500 channels, to take care of any system expansion.
2.11.2The software shall be user friendly working on WIN 95 & upgradable to WIN 2000 platform . Most importantly, the software shall provide a DDE (Dynamic Data Exchange) link to export data to MS Excel applications on real time basis (customer’s software).
2.11.3The upgradation in software, if any, shall be available to the customer.
2.11.4The software should recognize the unique Identification Nos. and type of inputs assigned to each module in the hardware and individual channels should be software configurable for different type of inputs.
2.12Computer
One suitable laptop/notebook personal computers of the following minimum specifications shall be supplied:
P-II 266 MHZ
32 MB RAM
4.3 GB Hard Disk
1.44 MB swapable in/ext. 3.5” drive Swapable CD ROM drive
1.2” high resolution TFT/Active Matrix Color LCD screen
86 full size keys, mouse point and overlay keypad, 12 function and 2 win 95 keys
Section: 2.4 Page 4/10
Two 32 bit Cardbus PC card slots (2 x Type II or 1 x Type III) infrared interface (Optional), parallel printer port, RS 232 serial port, PS/2 keyboard/mouse port, SVGA port, FDD interface, DAA module (Optional) interface for modem, slimline port, Docking unit with at least one full size ISA size slots for any instrumentation interface card and compatibility with DAS hardware.
Autosensing AC adopter, rechargeable, removable lithium ion battery up to 2.5 hours per charge.
Window ‘95/2000 , MS Office 97 with multimedia
Ambient Conditions: Minimum & Maximum Temperature 5 to 45 degree C Humidity – 90%
2.13System Integration
After placement of the order, the system integration with suitable simulation of the customers’ inputs shall be demonstrated at site/Indian office on one module of each type by the supplier/supplier’s representative. Only after satisfactory demonstration of the same should final clearance for dispatch of the material be given. The detailed acceptance test procedure shall be finalized after the award, in consultation with the supplier.
2.14System shall include any other accessories required for the completeness of the system such as: power supply cables, male/female connectors for the input connector block (for input channels) for easy connectivity, carrying cases for transportability, etc.
2.15Mandatory spares shall be listed and quoted separately. Also, a list of anticipated spares for the next five years along with prices should be provided.
3.0Maintenance Support
After sales service support shall be provided within India either directly or through representative in India. Spares will also be provided directly or by representative in India. A specific confirmation is to be given in the technical bid.
Section: 2.4 Page 5/10