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M ELECTRIC 电气的
STEAM TURBINE 蒸汽涡轮 EXPANDER 扩大室
HEAT EXCHANGER 换热器
SHELL AND TUBE HEAT EXCHANGER 管壳式换热器
HORIZONTAL SHELL AND TUBE HEAT EXCHANGER 水平式管壳式换热器
VERTICAL SHELL AND TUBE HEAT EXCHANGER 垂直式管壳式换热器
SINGEL SECTION DOUBLE PIPE EXCHANGER
TWO SECTION DOUBLE PIPE EXCHANGER
AIR COOLER 空冷器
AIR COOLER (PFD ONLY) 空冷器
KETTLE TYPE REBOILER OR STEAM GENERATOR
KETTLE TYPE EXCHANGER (PFD ONLY)
GRAPHITE BLOCK TYPE EXCHANGER
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PLATE EXCHANGER
DRAWING IDENTIFICATION 图形说明 REVISION NO. 修订号 DRAWING NO. 图号 AREA NO. 区号 JOB NO. 工号
DRAWING SIZE
VESSELS AND FURNACES 容器和炉子
FLOATING ROOF TANK 浮顶罐
CONE ROOF TANK WITH INTERNAL COIL 带内盘管锥型顶罐 COLUMN 柱型 PACKING
INTERNAL BAFFLE
VORTEX BREAKER 旋风分离器
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CABIN TYPE HEATER WITH EXTERNAL CROSS-OVERS
HORIZONAL TYPE HEATER WITH INTERNAL CROSSOVERS 内部有交叉的水平加热管 VESSEL ELEVATIONS 离地面高度
INSULATION CODE 保温代码
D ANTI-SWEAT INSULATION 防水保温
E ELECTRICAL TRACING
F FULL HEAT CONSERVATION
H NORMAL HEAT CONSERVATION 一般保温
M DUAL SERVICE INSULATION
P PERSONNEL PROTECTION
防护人员
S SPECIAL 特殊的
T STEAM TRACING
V ACOUSTICAL 听力的
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BREAK OF RESPONSIBILITY
SYMBOL FOR LOCATION OF TIE-IN POINT CONNECTED
U NEW ETHYLENE STORAGE AREA 乙烯新区的
V OSBL (ON NORTH SIDE RACK)
W OSBL (ON MAIN RACK IN FRONT OF NEW HEATER)
X OSBL (ON SOUTH SIDE RACK)
Y OSBL (COOLING WATER)
E EXISTING AREA
D DPG AREA
C4 C4 HYDRO AREA
D(W) DPG AREA AND THROUGH THE TIE-IN POINT(W) ON THE RACK
C4(U) C4 HYDRO AREA AND THROUGH THE TIE-IN POINT(U) ON THE RACK
E(W) EXISTING AREA AND THROUGH TIE-IN POINT(W) ON THE RACK
E(X) EXISTING AREA AND THROUGH TIE-IN POINT(X) ON THE RACK
GENERAL NOTES
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1. FOR INSTRUMENTATION SYMBOLS SEE DWG NO.0005B 仪表符号参阅图DWG NO.0005B
2. FLOW DIAGRAMS ARE DIAGRAMATIC ONLY 。 ROUTING OF PIPELINES MUST BE INVESTIGATED FOR VENTING OF HIGH POINTS OF PIPING AND DRAINING OF LOW POINTS OF PIPING AND EQUIPMENT . THESE POINTS ARE NOT NORMALLY SHOWN ON P&I FLOW DIAGRAM
3. THE CONTROL VALVE ASSEMBLY WILL HAVE A 3/4＂ DRAIN VALVE LOCATED ON THE UPSTREAM SIDE OF THE CONTROL VALVE
在调节阀的上游应有一个3/4英寸的就地排放阀。 .
4. VESSEL INTERNALS, FURNACE COILS , HEADERS, AND MANIFOLDS ARE SHOWN TO THE EXTENT REQUIRED FOR CLARITY. 容器内部、炉管等在必要的地方标明。
5. ALLOWANCE IS TO BE MADE FOR TEMPORARY STRAINERS IN SUCTION LINES OF ALL PUMPS AND COMPRESSOR 1 1/2＂ AND LARGER . ＂Y＂TYPE STRAINERS ARE TO BE PROVIDED IN SUCTION LINES 1 1/2＂ AND SMALLER..
在所有泵、压缩机的吸入管线上均装有1 1/2＂或更大的临时过滤器，＂Y＂型过滤器则被装在1 1/2＂或更小的管线上。
6. ＇TO ATM AT SAFE LOCATION＇MEANS 3000mm ABOVE ANY PLATFORM
OR STAIRWAY WITHIN AN 8000mm RADIUS.
7. 9mm WEEP HOLE SHALL BE PROVIDED IN LOW POINTS OF RELIEF
VALVE DISCHARGES VENTING TO ATMOSPHERE. 在排大气阀的低点有一个9mm的孔来排出液体。
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