Chemwatch: 4883-44
Page 5 of 10
Version No: 4.1.1.1
Issue Date: 12/22/2014
Print Date: 06/27/2016
Nature's Answer Pernaease Powder
OCCUPATIONAL EXPOSURE LIMITS (OEL)
INGREDIENT DATA
Not Available
EMERGENCY LIMITS
Ingredient
Material name
TEEL-1
TEEL-2
TEEL-3
Nature's Answer
Pernaease Powder
Not Available
Not Available
Not Available
Not Available
Ingredient
Original IDLH
Revised IDLH
Stabilised Green-Lipped
Mussel Powder (Perna
canaliculus)
Not Available
Not Available
Shark Cartilage
Not Available
Not Available
Abalone Powder (Haliotis
iris)
Not Available
Not Available
MATERIAL DATA
Sensory irritants are chemicals that produce temporary and undesirable side-effects on the eyes, nose or throat. Historically occupational exposure
standards for these irritants have been based on observation of workers' responses to various airborne concentrations. Present day expectations require
that nearly every individual should be protected against even minor sensory irritation and exposure standards are established using uncertainty factors or
safety factors of 5 to 10 or more. On occasion animal no-observable-effect-levels (NOEL) are used to determine these limits where human results are
unavailable. An additional approach, typically used by the TLV committee (USA) in determining respiratory standards for this group of chemicals, has
been to assign ceiling values (TLV C) to rapidly acting irritants and to assign short-term exposure limits (TLV STELs) when the weight of evidence from
irritation, bioaccumulation and other endpoints combine to warrant such a limit. In contrast the MAK Commission (Germany) uses a five-category system
based on intensive odour, local irritation, and elimination half-life. However this system is being replaced to be consistent with the European Union (EU)
Scientific Committee for Occupational Exposure Limits (SCOEL); this is more closely allied to that of the USA.
OSHA (USA) concluded that exposure to sensory irritants can:
cause inflammation
cause increased susceptibility to other irritants and infectious agents
lead to permanent injury or dysfunction
permit greater absorption of hazardous substances and
acclimate the worker to the irritant warning properties of these substances thus increasing the risk of overexposure.
Exposure controls
Engineering controls are used to remove a hazard or place a barrier between the worker and the hazard. Well-designed
engineering controls can be highly effective in protecting workers and will typically be independent of worker interactions to
provide this high level of protection.
The basic types of engineering controls are:
Process controls which involve changing the way a job activity or process is done to reduce the risk.
Enclosure and/or isolation of emission source which keeps a selected hazard "physically" away from the worker and
ventilation that strategically "adds" and "removes" air in the work environment. Ventilation can remove or dilute an air
contaminant if designed properly. The design of a ventilation system must match the particular process and chemical or
contaminant in use.
Employers may need to use multiple types of controls to prevent employee overexposure.
Appropriate
engineering controls
Local exhaust ventilation is required where solids are handled as powders or crystals; even when particulates are relatively
large, a certain proportion will be powdered by mutual friction.
If in spite of local exhaust an adverse concentration of the substance in air could occur, respiratory protection should be
considered.
Such protection might consist of:
(a): particle dust respirators, if necessary, combined with an absorption cartridge;
(b): filter respirators with absorption cartridge or canister of the right type;
(c): fresh-air hoods or masks.
Air contaminants generated in the workplace possess varying "escape" velocities which, in turn, determine the "capture
velocities" of fresh circulating air required to effectively remove the contaminant.
Type of Contaminant:
Air Speed:
direct spray, spray painting in shallow booths, drum filling, conveyer loading, crusher dusts, gas
discharge (active generation into zone of rapid air motion)
1-2.5 m/s (200-500
f/min.)
grinding, abrasive blasting, tumbling, high speed wheel generated dusts (released at high initial
velocity into zone of very high rapid air motion).
2.5-10 m/s (500-2000
f/min.)
Within each range the appropriate value depends on:
Lower end of the range
Upper end of the range