Emerson Process Management OXYMITTER 4000 - Manual (Page 28)

Instruction Manual
IB-106-340C Rev. 4.1
July 2004
P-20 Rosemount Analytical Inc. A Division of Emerson Process Management
Hazardous Area Oxymitter 4000
SECTION IX. SPECIAL PRECAUTIONS
PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING
General cleanliness should be followed.
The Toxicology data indicate that ceramic fiber should be handled with caution. The handling practices de-
scribed in this MSDS must be strictly followed. In particular, when handling refractory ceramic fiber in any
application, special caution should be taken to avoid unnecessary cutting and tearing of the material to mini-
mize generation of airborne dust.
It is recommended that full body clothing be worn to reduce the potential for skin irritation. Washable or dis-
posable clothing may be used. Do not take unwashed work clothing home. Work clothes should be washed
separately from other clothing. Rinse washing machine thoroughly after use. If clothing is to be laundered by
someone else, inform launderer of proper procedure. Work clothes and street clothes should be kept separate to
prevent contamination.
Product which has been in service at elevated temperatures (greater than 1800ºF/982ºC) may undergo partial
conversion to cristobalite, a form of crystalline silica. This reaction occurs at the furnace lining hot face. As a
consequence, this material becomes more friable; special caution must be taken to minimize generation of air-
borne dust. The amount of cristobalite present will depend on the temperature and length in service.
IARC has recently reviewed the animal, human, and other relevant experimental data on silica in order to criti-
cally evaluate and classify the cancer causing potential. Based on its review, IARC classified crystalline silica
as a group 2A carcinogen (probable human carcinogen).
The OSHA permissible exposure limit (PEL for cristobalite is 0.05 mg/m 3 (respirable dust). The ACGIH
threshold limit value (TLV) for cristobalite is 0.05 mg/m 3 (respirable dust) (ACGIH 1991-92). Use NIOSH or
MSHA approved equipment when airborne exposure limits may be exceeded. The minimum respiratory pro-
tection recommended for given airborne fiber or cristobalite concentrations are:
CONCENTRATION
0-1 fiber/cc or 0-0.05 mg/m 3 cristobalite Optional disposable dust respirator (e.g. 3M
(the OSHA PEL) 9970 or equivalent).
Up to 5 fibers/cc or up to 10 times the Half face, air-purifying respirator equipped
OSHA PEL for cristobalite with high efficiency particulate air (HEPA)
filter cartridges (e.g. 3M 6000 series with
2040 filter or equivalent).
Up to 25 fibers/cc or 50 times the OSHA Full face, air-purifying respirator with high
PEL for cristobalite (2.5 mg/m 3 ) efficiency particulate air (HEPA) filter cart-
ridges (e.g. 3M 7800S with 7255 filters or
equivalent) or powered air-purifying respirator
(PARR) equipped with HEPA filter cartridges
(e.g. 3M W3265S with W3267 filters or
equivalent).
Greater than 25 fibers/cc or 50 times the Full face, positive pressure supplied air respira-
OSHA PEL for cristobalite (2.5 mg/m 3 ) tor (e.g. 3M 7800S with W9435 hose & W3196
low pressure regulator kit connected to clean
air supply or equivalent).
If airborne fiber or cristobalite concentrations are not known, as minimum protection, use NIOSH/MSHA approved
half face, air-purifying respirator with HEPA filter cartridges.