Work Environment Measurement

The Environment Control Division (ECD) of the Occupational Safety and Health Center (OSHC) work primarily towards eliminating work environment hazards and their effects. ECD carries out work environment measurement to evaluate levels of exposure to chemicals like solvents, acids, metals, gases, asbestos and physical agents like noise, heat, vibration and illuminations. It also evaluates existing ventilation system and recommends control measures to reduce workers exposure and eliminate workplace hazards. ECD is equipped with apparatus from sampling devices, direct reading instruments and analytical laboratory equipment and utilizes JISHA, OSHA and NIOSH method in doing our workplace assessment and worker’s exposure to hazards.

WEM Parameters

I. PHYSICAL FACTORSII. DUSTIII. ORGANIC SOLVENTS IV. GASESV. ACIDSVI. METALSVII. OTHER CHEMICALSVIII. RESPIRATOR (Air Purifying Respirator)IX. VENTILATION
1. Noise
– Direct Indication
– Octave Band Analysis
2. Heat
3. Illumination
4. Vibration
– Hand Arm
– Whole Body



1. Total / Respirable Dust Concentration
– Low Volume Sampling
– Personal Sampling
– High Volume Sampling
2. Asbestos Counting
3. Asbestos/Mineral Dust Qualitative Analysis by XRD



1. Acetonitrile
2. Carbon Disulfide
3. Alcohol 1
– Methanol
– Ethanol
– Isopropyl Alcohol
– Tert-Butyl Alcohol
4. Alcohol 2
– Isobutyl Alcohol
– n-Butyl Alcohol
– n-Propyl Alcohol
– Sec-butyl Alcohol
– Allyl Alcohol
5. Aromatic Hydrocarbon
– Benzene
– Cumene
– Ethyl Benzene
– Napthalene
– Styrene
– Toluene
– Xylene
6. Hydrocarbon
– Cyclohexane
– n-Heptane
– n-Octane
– n-Pentane
– Methyl Cyclohexane
– N-Hexane
7. Ketone
– Acetone
– Cyclohexanone
– 2-Pentanone
– 2-Hexanone
– Methyl Ethyl Ketone
– Methyl Isobutyl Ketone
8. Halogenated Hydrocarbon
– Carbon Tetrachloride
– Chlorobenzene
– Chloroform
– 1-2 Dichloromethane
– 1-2 Dichloroethylene
– O-Dichlorobenzene
– P-Dichlorobenzene
– 1-1-2-2 Tetrachloroethane
– Tetrachlorethylene
– Trichloroethylene
– Dichloromethane / Methylene Chloride
9. Other Organic Compounds
– Ethers
– Esters (Ethyl Acetate, Butyl Acetate)
10. Qualitative and Quantitative sample Profiling of Organic Solvent by Gas Chromatography – Mass Spectrometry



– Hydrogen Sulfide
– Carbon Monoxide
– Carbon Dioxide
– Oxygen
– Combustible Gases (LEL)
– Sulfur Dioxide
– Nitrogen Dioxide
– Volatile Organic Compounds (VOCs)
– Other Gases (Gas Monitor)
– Ammonia
– Mercury



– Sulfuric Acid
– Nitric Acid
– Hydrochloric Acid
– Phosphoric Acid
– Hydroflouric ACid
– Chromic Acid
– Formic Acid
– Acetic Acid



– Aluminum
– Arsenic Compound
– Cadmium and Compound
– Chromium
– Lead
– Mercury
– Zinc
– Manganese
– Iron
– Copper
– Tin



– Ozone
– Formaldehyde
– Hydrogen Cyanide
– Phenol
– Chlorine

1. Dust Respirator
a. Disposable-type dust respirator
– Dust removing efficiency and inhalation resistance
b. Replaceable type dust respirator
– Dust removing efficiency and inhalation resistance
2. Gas Respirator
a. Gas removing ability of chemical cartridges/canister
a.1. Organic Gases
a.2. Sulfur Dioxide (SO2)
a.3. Carbon Monoxide (CO)
a.4. Chlorine (Cl2)
a.5. Ammonia (NH3)
b. Smoke removing efficiency of canister and chemical cartridges
c. Pressure Drop Test
– Face piece and connecting hoses
– Canisters and Chemical Cartridges
– Exhalation and Inhalation Valves
d. Air Tightness Test
– Face piece and connecting hoses
– Canisters and Chemical Cartridges
– Exhalation and Inhalation Valves
e. Chemical Resistance
f. Heat Resistance
g. Cold Resistance
h. Construction Test



1. General Ventilation
– Measurement of air velocity and ambient air temperature and determination of air direction
– Air Exchange
2. Local Exhaust Ventilation
a. Use of local exhaust vent modal of equipment with accessories and measuring apparatus
b. Test of Local Exhaust Ventilation System
– Measurement of hood velocity and determination of air directional pattern in hood suction



Request Form:

FREQUENTLY ASKED QUESTIONS

Q: What is Work Environment Measurement (WEM)?
A. Work Environment Measurement means sampling and analysis carried out in respect of the atmospheric work environment and other fundamental elements of working environment for the purpose of determining the actual conditions thereof.

Q. What is the basis for the conduct of WEM?
A. As stated in Rule 1077 of the OSHS, the employer shall carry out the working environment measurement in indoor or other workplaces where hazardous work is performed.

Q. Do we have local distributor of IH equipment?
A. Yes. There are suppliers of IH instruments locally.

Q. Do we have private companies that conduct WEM?
A. Yes, there are private service providers that conduct WEM, but the OSH Standards and DO 160-16 requires a WEM provider to be accredited.

Q. How often should we conduct WEM? What are the conditions or parameters to be measured?
A. WEM shall be conducted periodically as may be necessary but not longer than annually. As required by the OSHS, WEM shall include temperature, humidity, pressure, illumination, noise, ventilation and concentration of substances and chemicals. It is important to recognize environmental hazards or stresses in the workplace. The magnitude or level of hazards can be accurately determined by using industrial hygiene equipment. Prevention is better than cure so it is necessary to assess and evaluate these hazards.

Q. Are companies allowed to conduct internal monitoring
A. Yes, the company’s safety and medical personnel may conduct WEM provided they have taken adequate training and experience in WEM. Internal monitoring also requires the use of calibrated Industrial Hygiene equipment.


LIST OF PPE THAT PASS THE PERFORMANCE TESTING STANDARD OF THE OSHC

FOR SAFETY SHOES WITH PUNCTURE RESISTANCE PROTECTION

FOR SAFETY SHOES WITHOUT MID-SOLE DEVICE PROTECTION

HARD HAT

FOR SAFETY SPECTACLES, SAFETY GOGGLES AND FACE SHIELD

FALL PROTECTION EQUIPMENT

Note:


Occupational Health Examinations

BIOLOGICAL MONITORING

A. Heavy Metals

  • Lead in Blood
  • Lead in Urine
  • Cadmium in Blood
  • Cadmium in Urine
  • Mercury in Blood
  • Mercury in Urine

B. Organic Solvents

  • Hippuric Acid
  • Methyl-Hippuric Acid
  • Mandelic Acid
  • Total Phenol in Urine
  • Trichloroacetic acid
  • Trichloroacetic acid and Trichloroethanol

C. Special Examination

  • Audiometry