Organophosphates in turbine oil Halvor Erikstein SAFE www.safe.no - - PowerPoint PPT Presentation

▶
organophosphates in turbine oil
SMART_READER_LITE
LIVE PREVIEW

Organophosphates in turbine oil Halvor Erikstein SAFE www.safe.no - - PowerPoint PPT Presentation

Dec 02, 2022 359 likes •831 views

Organophosphates in turbine oil Halvor Erikstein SAFE www.safe.no Halvor@safe.no RIGA EWHN 29. September 2006 European Work Hazards Network http://www.balpa.org/intranet/BALPA-Camp/The-Aircra/index.htm Bilde hentet fra AOPIS: Contaminated

slide-1
SLIDE 1

Organophosphates in turbine oil

Halvor Erikstein SAFE www.safe.no Halvor@safe.no RIGA EWHN 29. September 2006 European Work Hazards Network

slide-2
SLIDE 2

http://www.balpa.org/intranet/BALPA-Camp/The-Aircra/index.htm

slide-3
SLIDE 3
slide-4
SLIDE 4
slide-5
SLIDE 5

Bilde hentet fra AOPIS: ”Contaminated Cabin Air – An Ongoing Health and Safety Issue, 2003” www.aopis.org

slide-6
SLIDE 6

Bilde hentet fra AOPIS: ”Contaminated Cabin Air – An Ongoing Health and Safety Issue, 2003” www.aopis.org

BLEED AIR

slide-7
SLIDE 7

Bilde hentet fra AOPIS: ”Contaminated Cabin Air – An Ongoing Health and Safety Issue, 2003” www.aopis.org

slide-8
SLIDE 8

Bilde hentet fra AOPIS: ”Contaminated Cabin Air – An Ongoing Health and Safety Issue, 2003” www.aopis.org

No problems here?

slide-9
SLIDE 9

To viktige additiver til bl.a MILSPEC 23699

1% N-phenyl-1-napthylamine 3% Tricresylfosfat (TCP) 10 isomerer (TOCP, DOCP, MOCP, TMCP, TPCP, DMCP, DPCP…….)

Bilde hentet fra AOPIS: ”Contaminated Cabin Air – An Ongoing Health and Safety Issue, 2003” www.aopis.org

slide-10
SLIDE 10
slide-11
SLIDE 11
  • MIL SPEC 23699

Sammenligning av to

  • ljer som møter

samme spesifikasjon

Castrol 5000 Exxon 2380

Oppvarming 525 C

  • C. Van Netten and V. Leung

Appl.OccEnv.Hyg Vol 15(3)277-283,2000

slide-12
SLIDE 12

Eksempel på omdanning under høy temperatur. Hvor mange andre slike mekanismer finnes?

slide-13
SLIDE 13
slide-14
SLIDE 14
slide-15
SLIDE 15

BP Turbo Oil 25, 2197, 2380, 2389

  • 2. COMPOSITION/INFORMATION ON INGREDIENTS
  • Chemical Composition Synthetic base stock. (90 - 100%)
  • Tris(methylphenyl) phosphate CAS No. EINECS No. 215-548-8

(<3%) 1330-78-5

  • (contains <0.1% ortho isomer)
  • Mixed aromatic amines (<5%)
  • Hazardous Components
  • No component is present at sufficient concentration to require a

hazardous classification.

slide-16
SLIDE 16

Standard equipment: 3 turbines for power generators 2 turbines for pumps/compressors

slide-17
SLIDE 17

Exhaust pipes from turbines

slide-18
SLIDE 18

Same engines but different environment

Outside, cold air, high air flow Indoor, ”high temperature”, limited airflow, running for more than 1000 hours without stopping. Much more tolerant to increased

  • il consumption and leakages

Illustration Illustration AOPIS: ”Contaminated Cabin Air AOPIS: ”Contaminated Cabin Air – – An Ongoing Health and Safety Issue, 2003” An Ongoing Health and Safety Issue, 2003” www. www.aopis aopis.org .org

slide-19
SLIDE 19
slide-20
SLIDE 20

Bleed air

slide-21
SLIDE 21

Pressure and temperature through a LM2500

slide-22
SLIDE 22

Surface temp 500 – 700 oC

slide-23
SLIDE 23

Turbinoljen skal både smøre og være kjøelmiddel

slide-24
SLIDE 24
  • Bearings: The

leaking points

  • On some
  • ffshore

installations, the bleed air is used as instrument air and as breathing air for respiratory protection BLEED AIR

Illustration Illustration AOPIS: ”Contaminated Cabin Air AOPIS: ”Contaminated Cabin Air – – An Ongoing Health and Safety Issue, 2003” An Ongoing Health and Safety Issue, 2003” www. www.aopis aopis.org .org

slide-25
SLIDE 25

”The Sump Philosophy”

slide-26
SLIDE 26

Bearing #1, 2, 3, 4

slide-27
SLIDE 27

The lubrication of bearings OIL JET Cavity drain Air to create

  • verpressure

Return oil

9000 rpm

Ballbearing Sump vent

Seals

slide-28
SLIDE 28

Sump vent into the exhaust. Earlier routed ”out” Vent

  • il tank

Cavity drain; To the floor under the turbine inside the hood! All seals leaks, but the amount varies

slide-29
SLIDE 29

Turbine hood and generator layout

slide-30
SLIDE 30

Cavity drain/sump vent Also used to observe the condition of the sealings Inside the turbine hood

slide-31
SLIDE 31

Many pipes and hoses which may leak.This area must be inspected while the engine is running.

Inside the turbine hood

slide-32
SLIDE 32

Many pipes and hoses which can leak and rupture. Vapors and aerosols hit hot surfaces

Inside the turbine hood

slide-33
SLIDE 33

Always some oil leakage and oil to be removed, sometimes >50 liters

Inside the turbine hood

slide-34
SLIDE 34

The vacuum cleaner creates aerosols

slide-35
SLIDE 35
slide-36
SLIDE 36

Outside

slide-37
SLIDE 37

Thermal degradation of lube oil

  • Some areas may have temperatures exceeding

500 oC

  • This temperature will create thermal

decomposition of the oil components

  • Some of degradation products will be much more

volatile and be vented out into the sump vent.

  • One must expect that new compounds will be

created by different chemical reactions.

slide-38
SLIDE 38

Locally, very hot surface Lube oil Vent system Volatile compounds from breakdown of

  • il

components: Inhalation Skin uptake Local thermal degradation

  • f lube oil
slide-39
SLIDE 39

Hot zones

slide-40
SLIDE 40

High temperature Friction pressure,

slide-41
SLIDE 41
slide-42
SLIDE 42

The 24 hours exposure Other sources for organophosphourous compounds

  • The flame retardant Pyrovatex is used in

bedlinen and coveralls

– Many reports on itchiness from bedlinen

  • Other oils and products with flame

retardants based on organophosphourous compounds.

slide-43
SLIDE 43
slide-44
SLIDE 44
slide-45
SLIDE 45

The absence of proof is not proof of absence