Page 499 - Boiler_Operators_Handbook,_Second_Edition

484 Boiler Operator’s Handbook

LPG 229 multiple boilers in service 388 organic fluid 131
lubricated plug valve 56 multiple-retort 322 orifice in the seal flushing piping 327
lubricating system 203 multiplier 415 orifice nipple 320
lubrication 201 multi-stage pumps 336 Otto 361
Lungstrom air preheater 309 O type boiler 289
N outdoor conditions 182
M nameplates 216 output 113
magnesium 249 NAPE (National Association of outsized 118
main flame trial for ignition (MFTI) Power Engineers) 121 over-feed stokers 322
64 national board data 430 overload a motor 38
maintaining a vacuum 360 National Board R-1 forms 306 over-lubrication 202
maintaining pneumatic controls 210 National Board “R” Symbol Stamp 94 oversized pumps 325
maintenance and repair National Board statistics 432 over-speed trip 101, 104
history 39 National Fire Protection Association oxygen pitting 255
log 46 (NFPA) Codes 7 oxygen trim 415
of the oil systems 203 natural circulation 389 ozone depletion 146
operating during 92 natural convection 273
makeup water pumps 130 natural draft 17 P
management’s attitude 433 net positive suction head 330 package boiler 289
manholes 286 new start-up 57 packing 209
manometer 58 New York Telephone Company 214 painters 215
matching equipment to the load 110 NFPA 85 216 parallel positioning controls 408
MAWP 280 nitrogen 25, 147 parallel positioning with air meter-
maximum allowable pressure 266 non-overloading motors 339 ing 409
MBtuh 10 non-return valve 304 parallel positioning with flow tie-
measurements 7 NPSHA 330 back 412
measures of a rate 7 NPSHR 330 parallel positioning with steam flow
measures of quantity 7 number of pumps in operation 112 trim 411
meniscus 246 paramagnetic analyzer 415
mercaptans 27 O parameter 365
mercury switches 303 Ohm’s law 34 partial alkalinity 247
meter on the makeup 126 oil 203 partial combustion 25
methane 28 oil burner tip 317 parts per million 244
methyl orange 247 oil field boilers 284 pass 283
methyl purple 247 oil filled transformers 215 PCBs 215
MIC (microbe induced corrosion) 82 oil for refrigeration 147 peaking generators 140
microturbines 362 oil gun 317 peak load 105
Mill Test Certificates 306 oil maintenance service 203 peat 235
minimum fire pressure regulator 63 oil pressure for light-off 59 peckerheads 215
minimum stop 69 oil transfer pumps 233 pendant type superheaters 293
misting 142 once through boilers 138, 292 percent humidity 181
mixing box 182 on-off boiler 398 percent makeup 248
moderator 25 on-off control 384 perception 120
modernizing and upgrading 119 open 33 permeate 251
modulating 15 operating modes 53 perpendicular 9
controls 385 operating unit 217 personal protective equipment
motor 385 operator’s log 46 (PPE) 6
Morrison tubes 267, 284 operator’s narrative 47 person in charge of lock-out, tag-out
motor control centers (MCCs) 37 operators 120 200
motor speed control 344 opposed blade dampers 185 petcock 298
motor starter 36 order of operations 42 petro-tite leak test 233