详细介绍
CTB811
CTB811
在程序设计和验收过程中,要充分调动全体员工的积极性,使大家尽可能多地和新的DCS控制系统进行了解、熟悉和掌握。在组态和验收中,要特别注意以下问题:
4.1 在程序组态设计中,一定要采用保障机组安全运行控制策略。保护或连锁的逻辑判据必须是充要的。对汽轮机转速、汽轮机润滑油压力等,宜采用硬接线保护和软件保护相结合,建议采用常闭信号,以确保保护的可靠投入;对重要的三取二保护信号,要采用模拟量和开关量进行组合,在保证重要主设备安全的前提下,建议尽可能采用常开信号,以避免保护的误动作。
4.2 在控制系统选型、设计、测试、验收、投入运行和在线调整各阶段,程序设计和测试人员一定要全程参与,要结合类似控制系统使用中存在的问题,严格审核保护控制逻辑设计和组态的合理性,测试中一定要全面测试所有的回路。要仔细记录各次检查和试验结果,若发现与软件相关的问题要立即与供应商取得,并将情况完整地反馈给他们以尽快解决问题。
4.3 要有必需的后备手段:重要的保护和联锁,出了有通讯连接外,还必须具有硬接线方式;对重要的调节设备,除了在操作员站上有软手操外,还必须有后备手操,以便在DCS控制系统控制器或I/O模件发生故障时,仍然可以对重要设备进行及时干预。
4.4 对程序员要加强管理,采用*制,且任何人改动程序都必须履行相关审批手续,并做好异动前后的记录。对重要调节系统的PID参数和阈值检测块等必须有记录,在优化调节参数过程中,必须实行监护制度,并在修改参数后及时进行试验,以免留下安全隐患。
SMC 20MM ORIFICE APPROX 1" NPT SOLENOID VALVE, VXD2150 *NEW*
NUMATICS 1/2" NPT, 0-10BAR, FLEXI-BLOCK REGULATOR W/ GAUGE R32RG04
SMC NVHS3500-N03-X1?16 VALVE NEW
STOCKHAM 1/2" 1000CWC BRASS GATE VALVE B-144
THERMAL ARC 1/16 INCH
HYTORK 280 3" VALVE ACTUATOR W/ PMV POSTIONER P5 104477
AUTOMATIC VALVE SOLENOID VALVE 416B67S3S3-DB7
ITT FABRI-VALVE 6" 150 CWP S316 KNIFE GATE VALVE %FV-C6702110000
SMC SOLENOID VALVE VSS8-8-FG-D-3EZ?-V1 IS
ITT ENGINEERED VALVES FABRI-VALVE 150CWP 12" KNIFE GATE VALVE C37S316P01
3" FLOW VALVE CF8M 3-150 / ANSI 150
ASCO RED-HAT 110/120V 17.1W 150 PSI 1/4" NPT SOLENOID VALVE, EF8340G001 *NEW*
VICKERS 110/120V .69/.85A 50/60HZ PILOT VALVE, PA5DG4S4LW-012N?-B-60 *NEW*
DRESSER 1 1/4" SEELYEY & JONES INC. CONSOLIDATED INDUSTRIAL VALVE 1541 F
NUMATICS 3/8" NPT, SHUT-OFF VALVE VS22-03
VELAN CF8M BALL 316CP MOD B137-3
R-P&C 1" 715#@850°F FORGED STEEL GLOBE VALVE FWB80-D
NUMATICS PNEUMATIC PUSH BUTTON VALVE W/ BASE, 11BAA441OA00000 *NEW SEALED*
TRABON LUBRIQUIP FLOW CONTROL DIVIDER VALVES LOT OF 2 MSP 20S
VACTRAP VACUUM VALVE VT1-A#1000 *NEW SEALED*
LADISH 150CWP CF8M 4" GATE VALVE 4001 000
PARKER 7133KBN1JVJ1N0D?100P3 110/120 VOLTS 50/60 HERTZ SOLENOID VALVE, NEW
FERGUSON 116 PSI, 1" NPT ACTUATION VALVE 80DA0375 SERIES 27 *NEW*
HUMPHREY SOLENOID VALVE 250 4H 21 103889
VICKERS DIRECTIONAL VALVE DG4S4 012 A20
REXROTH 3/8" SHUTTLE VALVE R431003349 NIB
SAFEMATIC MANIFOLD HYDRAULIC VALVE 1/2 IN NPT WITH GAUGES BPSG-PK/US
CIRCLE SEAL 9259B-2PM 150 PSI 1/4" MALE PIPE VALVE, NNB
WATTS B-6800 1" 3-PIECE FULL PORT BRASS BALL VALVE, NNB
SUN HYDRAULICS SOLENOID VALVE NBP 9HZ8 NNB
NUMATICS, 0-232 PSIG, 110-115/110-120?V, SOLENOID VALVE, I22BB400S000030 *NEW*
SUN HYDRAULICS 3-PORT, 3/8"NPT, CONTROL VALVE ECI 9HR8
GEMU 0-10BAR 8VA/6.5W SOLENOID VALVE 322-1
PMV VALVE CONTROL SYSTEM POSITIONER P5N-PV/90P-TA S30-K1 103532
SUMITOMO LOGIC VALVE LCD16A10D50-998?-0 / B380000038 NEW
NUMATICS 24VDC 2.5W PNEUMATIC VALVE 6 PIECE ASSEMBLY 122BA4Z2MN00061
PARKER 24VDC 6W 1/16" ORIFICE SOLENOID VALVE, 3121BBN1GV00RRT?1J1C2 *NEW SEALED*
AUTOMATIC VALVE * PRESSURE VALVE 1/2" * CDB-7KX