【CE02TFNHK-FD000-D】

【CE02TFNHK-FD000-D】
【CE02TFNHK-FD000-D】
【CE02TFNHK-FD000-D】
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2.2.2 人员误操作
(1)某电厂机组运行中，在进行处理缺陷时工作人员误动DCS继电器柜继电器造成引风机跳闸，锅炉MFT。
(2)某电厂DCS卡件故障，在进行更换卡件过程中，由于工作人员未认真核对设备、卡件跳线错误，导致新更换的卡件烧损。
2.2.3 管理制度不完善
(1)某电厂DCS系统管理制度不完善，未对软件升级、备份等工作进行规定。其辅网水处理POK1操作员站在升级打补丁后，未进行备份。该操作员站硬盘出现故障在进行系统恢复后，由于其软件版本较低，导致与网络通讯不正常，数据不刷新。
2.3 外部环境因素造成DCS故障实例
外部环境因素造成DCS故障的数量相比于前两类问题而言相对较少，但在实际生产过程中也时有发生。
(1)某电厂电子设备间风道口正处于DPU机柜上方，由于设计和其他原因，机组运行中消防水通过风道流入DCS机柜，导致DPU、服务器等设备进水烧损，机组停运。
(2)某电厂循环水泵房远程IO柜，由于底部封堵不严，造成冬季老鼠窜入，在机柜上部温度较高处构筑巢穴，造成远程IO脱双网。
(3)某电厂电子设备间的封闭性较差，卡件、DPU积灰较为严重，曾多次出现故障。在采取完善电子间封闭、加装空调等措施后卡件、DPU等故障基本杜绝。
SWAGELOK Tube Butt Weld Gland, 1/2" VCR x 1/4" TB3, 6LV-8-VCR-3-4TB3 1471P7

MKS BARATRON PRESSURE TRANSDUCER 1 TORR, 727A01TGA2FA

MKS BARATRON PRESSURE TRANSDUCER 100 TORR, 727A12TGA2FA

HAM-LET MOTOYAMA HIGH PURITY BELLOWS VALVE 3DS8CR-1LM, CU-H-173-1, 134C3

HPS DIV OF MKS PNEUMATIC ANGLE VALVE NW-40, CLIPPARD 2021, SHIPSAMEDAY 1649A1

MDC Welded Bellow Flexible Hose Vacuum NW40 x 4" x .005 Thk, KF40

1000x, Cel RF Bipolar Transistors NPN High Frequency, NE85639-T1-A, AA40

PHOENIX CONTACT, CDS CPU, Electronics Maassluls Holland, See Detail Below 130A3

Analog Devices IC AMP LNA 0.3-3.0GHZ SOT26, HMC374ETR, Q72

OKAYA Electric RU-HL120, RUHL120, IKP-0046, MD-12021R

Contains two coaxial 3 tube connections with Ultratorr 206-890-G2, RACK G G27

Inficon AG Vacuum Gauge, LI-9496 BALZERS, BPG400, 353-502, Shipsameday1208P4

Bussmann 170N3239, 75A, 660V, 89254, Shipsameday 1616AN

Bussmann 170N3433, 45A, 660V, 94453, Shipsameday 1616AR

Bussmann 170N3239, 75A, 660V, 89254, Shipsameday 1616AP

MKS Baraton Capacitance Manometer 10 TORR, 625D-30518, 625D305 Shipdameday1212Z

FESTO Manifold PRMZ-5-M5-4 (30244) & PRMZ-5-M5-31631B4 (30243) 1631B4

FESTO Manifold PRMZ-5-M5-4 (30244) & PRMZ-5-M5-31631B4 (30243) 1631B4

MACOM Attenuators 10-4000MHz Attn 30dB Quad Pi, MA4P7455-1225T Q65

TE Connectivity CONN SMA JACK R/A 50 OHM, 221790-1, A24692-ND V26

WESTINGHOUSE 1906A61G01, 223P718H01A, Shipsameday 1227F

Hanning CCI2000 CCI 2000 SPS-Interface Converter CCI2101 RackD D19

LUST Servo Motor LSH-074-3-30-560/T1,  SHIPSAMEDAY130Z17

FUJI CIRCUIT BREAKER EARTH LEAKAGE, 50A, 3P, EW125JAGU

TURCK fieldbus station 8 Digital, BLCDN-8M8S-8DI-N, F6811027

MKS TYPE 113 Power Supply readout, 113B-2, SHIPSAMEDAY, RACK E E54

IMS RCC-0805-2200G,  SHIPSAMEDAY AA25

Coilcraft Fixed Inductors Ceramic Chip, 0805CS-391XGLC, SHIPSAMEDAY AA24

IMS RCC-0805-560J, RCC080556R0J, SHIPSAMEDAY AA28

HAM-LET Poppet Check Valve 3/4", 10 PSI, H400SSL3/4

Mitsubishi General Purpose FR-A Series, FR-A220E-1.5K-UL

SMC CYLINDER AIR SLIDE TABLE, MXQ20-125CS-X11, ShipSameDay1618AA

GLENAIR BACKSHELL 31461-E4122S08061S0555, MS3057-6A 

GLENAIR BACKSHELL 31461-E4122S04061S0555, MS3057-6A 

HONEYWELL LOAD CELL MODEL 31, AL311BN, 060-1430-05, 1287331, SHIPSAMEDAY 1213H

Inficon AG Vacuum Gauge, LI-9496 BALZERS, BCG450, 353-550, Shipsameday1208P3

Novacap 0402B301K100NT, SHIPSAMEDAY N24

Reliance Electric 78096-1T,  23082378001, Shipsameday W/2-3days1534A3

Swagelok Needle Angle Valve 1", SS-12NBS16-A

MKS RIGHT ANGLE VALVE PNEUMATIC NW50, 152-1050K

EUROTHERM EPOWER/4PH-1700A-AC/690V, US31710-1-3-p1-3111-PL3I5

Hardy Instruments Sensor Accelerometer 3 PIN, HI-113, HI113, 1546A2

9x HOKE FILTER REMOVABLE 1/4" FNPT, 6323F4Y, 6322F4Y, 632F4Y, Box 8 “B9”

SMC VVQ4000-25AR-1

Cole-Parmer Masterflex PTFE-diaphragm pump head 7090-42

Allen Bradley 1785-LTR/B, PLC-5/15 

Nikon Circuit board PPEALI CTL, 2S017-412-3

NEST ELECTRONICS PCB CARD MPS16-SIO2