procurement of material service and mandatory spares for up gradation of asld system for stage i c and i department at sagardighi thermal power project wbpdcl procurement of material service and mandatory spares for up gradation of asld system for stage i c and i department at sagardighi thermal power project wbpdcl , procurement of material, service and mandatory spares for up-gradation of asld system for stage-i, c&i departmentat sagardighi thermal power project, wbpdcl , acoustic steam leakage detection system for boiler tube leakage detection. hermetically sealed piezoelectric sensor. freq response 1 to 20 khzadditional data:each system includes:1. 24 nos sensors and accessories (freq response within 1-20 khz)2. electronic modules and accessories3. calibrators4. computer5. hmi software6. speakers7. printer8. power supply modules9. necessary cables10. auto purging hardwaredetails are provided in the attached ‘annexure-a’ , supply of mandatory sparesadditional data:details are provided in the attached ‘annexure-a’ , dismantling, erection, commissioning , each roll should contain