TU814V1 3BSE013233R1
TU814V1 3BSE013233R1
在程序設(shè)計(jì)和驗(yàn)收過程中,要充分調(diào)動全體員工的積極性,使大家盡可能多地和新的DCS控制系統(tǒng)進(jìn)行了解、熟悉和掌握。在組態(tài)和驗(yàn)收中,要特別注意以下問題:
4.1 在程序組態(tài)設(shè)計(jì)中,一定要采用保障機(jī)組安全運(yùn)行控制策略。保護(hù)或連鎖的邏輯判據(jù)必須是充要的。對汽輪機(jī)轉(zhuǎn)速、汽輪機(jī)潤滑油壓力等,宜采用硬接線保護(hù)和軟件保護(hù)相結(jié)合,建議采用常閉信號,以確保保護(hù)的可靠投入;對重要的三取二保護(hù)信號,要采用模擬量和開關(guān)量進(jìn)行組合,在保證重要主設(shè)備安全的前提下,建議盡可能采用常開信號,以避免保護(hù)的誤動作。
4.2 在控制系統(tǒng)選型、設(shè)計(jì)、測試、驗(yàn)收、投入運(yùn)行和在線調(diào)整各階段,程序設(shè)計(jì)和測試人員一定要全程參與,要結(jié)合類似控制系統(tǒng)使用中存在的問題,嚴(yán)格審核保護(hù)控制邏輯設(shè)計(jì)和組態(tài)的合理性,測試中一定要全面測試所有的回路。要仔細(xì)記錄各次檢查和試驗(yàn)結(jié)果,若發(fā)現(xiàn)與軟件相關(guān)的問題要立即與供應(yīng)商取得,并將情況完整地反饋給他們以盡快解決問題。
4.3 要有必需的后備手段:重要的保護(hù)和聯(lián)鎖,出了有通訊連接外,還必須具有硬接線方式;對重要的調(diào)節(jié)設(shè)備,除了在操作員站上有軟手操外,還必須有后備手操,以便在DCS控制系統(tǒng)控制器或I/O模件發(fā)生故障時(shí),仍然可以對重要設(shè)備進(jìn)行及時(shí)干預(yù)。
4.4 對程序員要加強(qiáng)管理,采用*制,且任何人改動程序都必須履行相關(guān)審批手續(xù),并做好異動前后的記錄。對重要調(diào)節(jié)系統(tǒng)的PID參數(shù)和閾值檢測塊等必須有記錄,在優(yōu)化調(diào)節(jié)參數(shù)過程中,必須實(shí)行監(jiān)護(hù)制度,并在修改參數(shù)后及時(shí)進(jìn)行試驗(yàn),以免留下安全隱患。
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