常见的PID图例缩写符号
LINE SERVICE IDENTIFICATION
SYMBOL SERVICE
符号帮助
AIR SYSTEMS
空气系统
IA INSTRUMENT AIR
仪表风
PA PLANT AIR
工厂风
DA 烧焦空气
STEAM AND CONDENSATE SYSTEMS 蒸汽和凝液系统
HC HIGH PRESSURE CONDENSATE
高压蒸汽凝液
MC MEDIUM PRESSURE CONDENSATE
中压蒸汽凝液
LC LOW PRESSURE CONDENSATE
低压蒸汽凝液
SC SURFACE CONDENSATE
表面凝液
DS DILUTION STEAM
稀释蒸汽
HS HIGH PRESSURE STEAM
高压蒸汽
MS MEDIUM PRESSURE STEAM
中压蒸汽
LS SUPERHEATED LOW PRESSURE STEAM
过热低压蒸汽
PS SATURATED LOW PRESSURE STEAM
饱和低压蒸汽
SHS SUPER HIGH PRESSURE STEAM
超高压蒸汽
排放系统
CD CHEMICAL DRAIN
化污
LD LIQUID DRAIN
液体排放
ND NON-CONTAMINATED POLLUTION DRAIN
无污染排放
OD OILY DRAIN
油污
EXHAUST AND VENT SYSTEMS
AV ATMOSPHERIC VENT (NOT FROM PSV) 通大气（不从安全阀）
SV SAFETY VALVE TO ATMOSPHERE
安全伐排大气
火炬系统
DF DRY FLARE
干火炬
WF WET FLARE
湿火炬
GAS SYSTEMS
气体系统
FG FUEL GAS
燃料气
HG HYDROGEN
氢气
NG NITROGEN
氮气
SPECIAL LIQUID SYSTEMS 特殊液体系统
CL CAUSTIC
腐蚀性
QO QUENCH OIL
急冷油
SO SEAL OIL
密封油
WO WASHING OIL
冲洗油（压缩机）PROCESS SERVICE (NORMAL)
P PROCESS
工艺
REFRIGERANT SYSTEMS
BR BINARY REFRIGERANT
二元制冷
PR PROPYLENE REFRIGERANT
丙烯冷剂
WATER SYSTEMS
水系统
BFW BOILER FEED WATER
锅炉给水
FW FIRE WATER
消防水
IW INTERMEDIATE WATER
二次水
CWR COOLING WATER RETURN
冷却水回水
CWS COOLING WATER SUPPLY
冷却水
PW POLISHED WATER
工艺水
QW QUENCH WATER
急冷水
UW UTILITY WATER
工业水
WW WASTE WATER
废水
MISCELLANEOUS ABBREVIATION AND SERVICE SYMBOLS 各种缩写和符号
A AIR MOTOR
空气马达
ACC ACCESSIBLE
可接近的
ATM ATMOSPHERE
大气
BL BATTERY LIMIT
界区
BTS BUBBLE TIGHT SHUT-OFF
缓慢紧密切断
BV BY VENDOR
由供应商提供
CONN CONNECTION
连接
CSC CAR SEAL CLOSED
关闭锁定
CSO CAR SEAL OPEN
打开锁定
DEC DETAIL ENGINEERING CONTRACTOR
工程承包商详细资料
EOR END OF RUN
运行结束
SOR
EW EYEWASH
洗眼
FLG FLANGE
法兰
LC LOCKED CLOSED
锁定关闭
LO LOCKED OPEN
锁定打开
NC NORMALLY CLOSED
正常情况下关闭
NNF NORMALLY NO FLOW
正常情况下无流量
NO NORMALLY OPEN
正常情况下打开
S SAMPLE CONNECTION
