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Old 26th Feb 2015, 09:23
  #102 (permalink)  
Ahernar
 
Join Date: Feb 2015
Location: space
Posts: 20
House of Lords - Science and Technology - Fifth Report


4.38 Rolls-Royce stated that all current TCP used in the formulation of aviation lubricants contained far less than 0.1% TOCP and that, in fully formulated oils, TOCP was at practically undetectable parts-per-billion levels (p 271). ExxonMobil noted that jet engine oils formulated with TCP[<a href="http://www.publications.parliament.uk/pa/ld199900/ldselect/ldsctech/121/12107.htm#note57">57] are not classified as dangerous according to the toxicological criteria defined in the Dangerous Substances Directive (p 232).
4.39 Calculations by Airbus Industrie (Q 461 and refined in subsequent correspondence) showed that the worst-case scenario of the total discharge of an engine's lubricant into the engine would result in about 0.4 kg of oil passing into the cabin ventilation systems. Assuming that the oil contained 3% TCP, of which 0.1% was TOCP, the peak cabin atmosphere TOCP level would be about 0.025 mg/m3, reducing as a result of normal ventilation thereafter. The peak level would be a quarter of the workplace limit of 0.1 mg/m3 (and less than a tenth of the emergency workplace limit of 0.3 mg/m3). Contamination at much lower levels would result in visible smoke and odour which would normally result in the crew switching off the ventilation feed from the affected engine.


Of course the concerned people should try to gather more data but also should publish also the quantity detected .Simply detecting the stuff is of no importance since quantities barely detectable are not dangerous .Also TCP is NOT TOCP and the toxicity of one is very different fom the other
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