WÄRTSILÄ PAAE051728, Instruction Manual

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02A.8 Fluoride rubber products
02A.8.1 Handling instructions - normal sealing applica-
tions
In normal sealing applications the use of fluoride rubber products
does not cause any health hazards. The handling of products, e.g.
installation and service, can be made without any risk – provided
that normal industrial hygiene is applied.
02A.8.2 Handling instructions in case of overheated
seats and valve blow-by
When changing O-rings, for instance after a valve blow-by, opera-
tors handling the remains of burnt fluoride rubber must wear im-
penetrable acidproof gloves to protect the skin from the high
corrosive remains. Appropriate glove materials are neoprene or
PVC. All liquid state remains must be considered to be extremely
corrosive.
Neutralisation of the remains can be done by using large amounts
of calcium hydroxide solution (lime water). Used gloves must be
disposed off.
02A.8.2.1
Use of fluoride rubber products at temperature above
275 °C (527 °F)
Fluoride rubber can be used in most applications (up to 275 °C)
without any substantial degradation or health hazard. Use of or test
of fluoride rubber at temperatures above 275 °C must be avoided.
If the material, in spite of above recommendations, is exposed to
higher temperatures, or in case of an accident, there is a risk that
the temperature will rise out of control.
02A.8.3 Special conditions
02A.8.3.1
Grinding dust
Dust and particles which originates from grinding or abrasion (wear)
of fluoride rubber can cause the formation of toxic degradation
products when burned (incinerated). Smoking must therefore be
prohibited in areas where there is fluoride rubber dust and particles
present.
02A.8.3.2
Fire
In case of a fire, burning fluoride rubber can cause the formation of
toxic and corrosive degradation products (e.g. hydrofluoric acid,
carbonyl fluoride, carbon monoxide and carbon fluoride fragments
of low molecular weight)
Burning (incineration) of fluoride rubber is allowed only when using
approved incinerators equipped with gas emission reduction sys-
Appendix A Environmental Hazards 200507
02A - 8