Occupational Hygiene Monitoring Services (pty) ltd

SANAS ACCREDITED SERVICES

NOISE: (SANAS ACCREDITED)

Noise is usually seen as a sound that is loud, unpleasant, unexpected or undesired. Sound is what we hear and noise is unwanted sound. Unprotected exposure to harmful levels of noise at the workplace can cause noise induced hearing loss. The occupational exposure limit for noise is 85dB(A) as a time weighted average (TWA) over an 8 hour work shift.  

Noise surveys consists of taking noise measurements throughout the workplace to identify noisy areas. Personal noise exposure (noise dosimetry) can also be carried out.  

The noise survey reports provide very useful information which enables you to identify:
    • • Areas where employees are likely to be exposed to harmful levels of noise and personal noise dosimetry may be needed.
    • • Machines and equipment which generate harmful levels of noise.
    • • Employees who might be exposed to unacceptable noise levels.
    • • Noise control options to reduce noise exposure.
OHMS Pty Ltd carries out noise induced hearing loss (NIHL) surveys taking into consideration:
    • • Compliance with the noise regulations
    • • Hearing loss prevention
    • • Noise control

The (NIHL) surveys are carried out according to the Noise Induced Hearing Loss Regulations, 2003. (Occupational Health & Safety Act, Act 85 of 1993)

ASBESTOS: 

ASBESTOS RISK ASSESSMENT & INVENTORY:

Asbestos is the generic name for 6 different naturally-occurring fibrous minerals. A "fibre" is defined as a particle that is more than 5 micrometres (μm) in length and having a length to width ratio of at least 3:1.

Based on their physical and chemical properties, there are two major groups of asbestos: serpentine and amphibole. 

Serpentine: Serpentine fibres are long, flexible and curved. These fibres can be woven together. The main type of serpentine asbestos is chrysotile (white asbestos), which is the main type of asbestos used in manufacturing.

Amphiobole: Amphibole fibres are straight and stiff. These fibres are generally brittle and rod- or needle-shaped, which limits their commercial usefulness. There are 5 sub-types of amphiobole asbestos, including:
    • • Crocidolite (blue asbestos)
    • • Amosite (brown asbestos)
    • • Actinolite
    • • Anthophyllite
    • • Tremolite
Because it has heat-resistant and insulating properties, asbestos was used in a wide range of manufactured products. Before 1990, asbestos was mainly used for insulating buildings and homes against cold weather and noise, and for fireproofing. Asbestos was used by industry, construction, and commercial sectors in products such as:
    • • Building materials (roofing sheeting, roof sealants, ceiling and floor tiles,fascias, barge boards, eaves, paper products and felts, house siding, and asbestos-containing cement and plaster products).
    • • Friction materials (automobile clutch pads, brake linings, pads and shoes, and transmission parts).
    • • Fire and heat protection wear.
    • • Industrial furnaces and heating systems.
    • • Tremolite
    • • Asbestos textiles (fabrics).
    • • Heat, electrical, and sound insulation or wrappings.
    • • Insulation for hot and cold areas.
    • • Packing materials, gaskets, linings, and coatings.
    • • Reinforcement of plastic products, thermoset and thermoplastic resins.
    • • Filler in resins, plastics and caulking and in asphalt road surfacing.
OHMS Pty Ltd carries out asbestos assessments according to the Asbestos Regulations, 2001. (Occupational Health & Safety Act, Act 85 of 1993). From the asbestos assessment, an inventory will be drafted. Asbestos assessments are carried out to determine the following:
    • • The location and condition of all asbestos containing materials.
    • • The likelihood and potential to release asbestos fibres into the atmosphere.
    • • The potential of personal asbestos fibre exposure.
    • • To ensure compliance with the Asbestos Regulations, 2001 and the Environmental Asbestos Regulations, 2007.

 ASBESTOS AIR MONITORING:

Asbestos in air monitoring is the only way to quantify asbestos in air concentrations. This is done by air drawn through a 25mm mixed cellulose esther membrane (MCE) filter. The filter are then analysed by phase contrast microscopy (PCM) to determine the airborne asbestos concentrations.

OHMS Pty Ltd offers the following services:
    • • Asbestos risk assessment & inventory
    • • Drafting asbestos plans for asbestos removal projects.
    • • Approval of asbestos plans.
    • • Notification to the Department of Labour (DoL) of intention to remove asbestos containing materials.
    • • Air monitoring (Background, during removal (personal & static), clearance and re-assurance)
    • • Air sample analysis (counting of asbestos fibres)*
    • • Bulk sample analysis (to determine if a material contains asbestos)*

*The asbestos air and bulk sample analysis are carried out in the OHMS Pty Ltd Occupational Hygiene laboratory. The asbestos air and bulk sample analysis are carried out according to HSG 248, The analysts’ guide for sampling, analysis and clearance procedures.

HAZARDOUS CHEMICAL SUBSTANCES: (SANAS ACCREDITED)

Hazardous chemical substances refers to any toxic, harmful, corrosive, irritant orasphyxiant substance or, a mixture of substances, including dusts, fumes, gases, mists and vapours, that may produce adverse health effects in individuals when exposed to sufficient quantities.

The HCS surveys are carried out according to the Hazardous Chemical Substance Regulations, 1995. (Occupational Health & Safety Act, Act 85 of 1993).

OHMS Pty Ltd offers the following services:
    • • Walk through health risk assessment/ chemical risk assessment (on site).A Chemical Risk Assessment will help employers to identify and manage the risk from chemical exposure, as per the Regulations for Hazardous Chemical Substances, 1995. The chemical risk assessment will determine what airborne contaminant needs to be quantified by air monitoring based on the process and material safety data sheets (MSDS).
    • • Personal, static and environmental air monitoring for HCS based on the walk through health risk assessment and/or chemical risk assessment.
    • • Testing of ventilation controls in place (local exhaust ventilation, fume cupboards etc.)
    • • Planning and drafting of chemicalmonitoring programmes.
OHMS Pty Ltd carries out HCS surveys taking into consideration:
    • • Compliance with the HCS regulations
    • • Protecting the health of the workers
    • • Medical surveillance for employees exposed to table 3 substances (HCS Regulations, 1995)
    • • Annual reminder to clients for the monitoring for table 1 substances if applicable(HCS Regulations, 1995)
    • • Recommending controls in good faith to keep chemical exposures as low as reasonably practicable (ALARP)

*The asbestos air and bulk sample analysis are carried out in the OHMS Pty Ltd Occupational Hygiene laboratory. The asbestos air and bulk sample analysis are carried out according to HSG 248, The analysts’ guide for sampling, analysis and clearance procedures.

LEAD: (SANAS ACCREDITED)

Lead is a very soft, highly malleable metal that is very resistant to corrosion. In terms of industrial hygiene two categories of lead compounds are considered – firstly, lead and inorganic lead compounds and secondly, organic lead compounds. Lead is widely used in metal products, sheet metal, solders and pigments. It was also widely used as an additive (tetra ethyl lead) in petrol. Other uses of lead include in batteries, pottery glazes and in lead crystal glass. Exposure to lead and inorganic lead compounds usually occurs through inhalation of dust and fume from metal processing, grinding and welding. Lead is readily absorbed through the lungs. Ingestion is also a possible route of entry where poor hygiene standards occur. Once in the body the lead is transported by the red blood cells and stored mainly in the bone marrow where it interferes with haemoglobin production. Organic lead compounds (mainly tetra ethyl lead) are absorbed as a vapour by inhalation and are also readily absorbed through the skin.

The lead surveys are carried out according to the Lead Regulations, 2001. (Occupational Health & Safety Act, Act 85 of 1993)

OHMS Pty Ltd offers the following services:
    • • Walk through health risk assessment/ lead risk assessment to lead (on site).A lead Risk Assessment will help employers to identify and manage the risk from lead exposure, as per the Lead Regulations, 2001.
    • • Personal, static and environmental air monitoring for lead based on the walk through health risk assessment and/or lead risk assessment.
    • • Testing of ventilation controls in place (local exhaust ventilation, fume cupboards etc.)
    • • Planning and drafting of chemical monitoring programmes.
OHMS Pty Ltd carries out HCS surveys taking into consideration:
    • • Compliance with the Lead regulations
    • • Protecting the health of the workers
    • • Medical surveillance for employees exposed to lead (Lead Regulations, 2001)
    • • Annual reminder to clients for personal exposure to lead monitoring(Lead Regulations, 2001)
    • • Recommending controls in good faith to keep lead exposures as low as reasonably practicable (ALARP)
OHMServices.co.za SANAS Accreditation 2016 1
OHMServices.co.za SANAS Accreditation 2016 2
OHMServices.co.za SANAS Accreditation 2016 3
OHMServices.co.za SANAS Accreditation 2016 4
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