IGC 2 Mock Paper and Answers

INTERNATIONALGENERALCERTIFICATEIN OCCUPATIONALHEALTHAND SAFETY MOCK PAPERIGC2:CONTROLOF INTERNATIONALWORKPLACEHAZARDS 1.

(a) Outline the possible effects on worker's health-when exposed to high noise levels.

(6)

(b) Outline the factors to be considered when selecting personal hearing protection for workers.

(6)

(c) Describe, with practical examples, noise control techniques that would reduce noise levels in the workplace. (8) 2.

A worker is manually loading boxes of components onto metal racking. a.

Identify FOURtypes of injury that the worker could be at risk from while carrying out this activity. (4)

b.

Outline the factors in relation to the task that will affect the risk of injury

(4)

3.

Identify the information that should be included on a material safety data sheet (MSDS)provided with a hazardous substance. (8)

4.

(a) Outline the term 'respirable dust'.

(2)

(b) Outline the methods for measuring airborne dust in the workplace.

(6)

Identify control measures to reduce the risk of accidents from reversing vehicles in the workplace.

(8)

Identify control measures to reduce the risk of electric shock when using a portable electric drill.

(8)

5.

6.

7.

Identify EIGHTsafe working practices that should be considered to reduce the risk when using a mobile tower scaffold. (8)

8.

(a) Identify TWO types of hazardous substance.

(2)

(b) Outline personal hygiene controls to reduce the risk of ingestion of a hazardous substance.

(6)

9.

Outline the factors to be considered for the successful evacuation of persons from a workplace in the event of fire. (8)

10. A maintenance worker regularly uses a hand held grinder, and is exposed to vibration. (a) Identify the symptoms that the worker may experience due to this exposure.

(2)

(b) Outline SIXcontrol measures that can be used to reduce the risk from vibration.

(6)

11. (a) Identify FOURhazards associated with the use of battery-powered fork lift trucks.

\0 )()

Outline the control measures for EACHof the hazards identified in (a).

(4) (4)

INTERNATIONALGENERALCERTIFICATEIN OCCUPATIONALHEALTHAND SAFETY MOCK PAPERIGC2:CONTROLOF INTERNATIONALWORKPLACEHAZARDS 1.

(a) Outline the possible effects on worker's health when exposed to high noise levels.

(6)

(b) Outline the factors to be considered when selecting personal hearing protection for workers.

(6)

(c) Describe, with practical examples, noise control techniques that would reduce noise levels in the workplace. (8) 2.

A worker is manually loading boxes of components onto metal racking. a.

Identify FOURtypes of injury that the worker could be at risk from while carrying out this activity. (4)

b.

Outline the factors in relation to the task that will affect the risk of injury

(4)

3.

Identify the information that should be included on a material safety data sheet (MSDS) provided with a hazardous substance. (8)

4.

(a) Outline the term 'respirable dust'.

(2)

(b) Outline the methods for measuring airborne dust in the workplace.

(6)

Identify control measures to reduce the risk of accidents from reversing vehicles in the workplace.

(8)

Identify control measures to reduce the risk of electric shock when using a portable electric drill.

(8)

5.

6.

7.

Identify EIGHTsafe working practices that should be considered to reduce the risk when using a mobile tower scaffold. (8)

8.

(a) Identify TWO types of hazardous substance.

(2)

(b) Outline personal hygiene controls to reduce the risk of ingestion of a hazardous substance.

(6)

9.

Outline the factors to be considered for the successful evacuation of persons from a workplace in the event of fire. (8)

10. A maintenance worker regularly uses a hand held grinder, and is exposed to vibration. (a) Identify the symptoms that the worker may experience due to this exposure.

(2)

(b) Outline SIX control measures that can be used to reduce the risk from vibration.

(6)

11. (a) Identify FOURhazards associated with the use of battery-powered fork lift trucks.

(4)

b :~Outline the control measures for EACHof the hazards identified

(4)

in (a).

INTERNATIONAL GENERALCERTIFICATEIN OCCUPATIONALHEALTHAND SAFETY MOCK PAPERIGC2:CONTROLOF INTERNATIONALWORKPLACEHAZARDS 1.

(a) Outline the possible effects on worker's health when exposed to high noise levels.

(6)

Model Answer: 1mark each Acute • • • • Chronic • • •

Temporary threshold shift Temporary tinnitus or ringing in the ears Trauma, e.g. blast deafness Stress / fatigue / headaches Noise induced hearing loss / permanent threshold shift Damage to hairs in the cochlea / reduced hearing capability at certain frequencies Permanent tinnitus or ringing in the ears

(b) Outline the factors to be considered when selecting personal hearing protection for workers.

(6)

Model Answer: • Noise level/exposure time or noise dose • Frequency of noise (octave band analysis) • • • • • •

Ear p~oblems Training in use Compatibility with other PPE worn Comfort Manufacturers attenuation data / standards Cost / Availablity

(c) Describe, with practical examples, noise control techniques that would reduce noise levels in the workplace. (8) Model • • • • • • •

2.

Answer: 2 marks each Process change, e.g. bolts rather than rivets Isolation if sound / sound proof enclosure Noise insulation, e.g. partitions Absorption in foam / surface coatings Vibration isolation / machinery mounts, flexible pipes Damping / stiffening of panels Silencing of exhausts

A worker is manually loading boxes of components onto metal racking. a.

Identify FOURtypes of injury that the worker could be at risk from while carrying out this activity. (4)

Model Answer: • Prolapsed or slipped or compressed disc • Torn ligaments / sprained tendons • Hernia • Muscle strain • • •

Cuts Abrasion Fracture

•

Bruises

*No marks for "back pain" or "musculoskeletal

b.

injury"

Outline the factors in relation to the task that will affect the risk of injury

(4)

Model Answer:

3.

•

Frequency of the activity

•

Distance reached

•

Distance load held away from body

I stooping

•

Twisting

•

Height lifted

•

Distance carried

movements

Identify the information that should be included on a material safety data sheet (MSDS)provided with a hazardous substance. (8)

Model Answer:

4.

I preparation I propriety

•

Substance

•

Composition

•

Hazard identification

•

First Aid measures

•

Fire-fighting

I supplier

identification name

measures release

I spillage

•

Accidental

•

Handling & Storage

•

Exposure controls I PPE Physical and Chemical Properties (any example)

•

Stability and reactivity

•

Toxicological

•

Ecological data

data

•

Disposal data

I environmental

•

Transport data

•

Regulatory

requirements

considerations

I information,

e.g. Risk and safety phrases

I OEL

(a) Outline the term 'respirable dust'.

(2)

Model Answer: Atmospheric

dust of particle size (0.5 to 7 microns) that enters lower lungs during respiration.

(b) Outline the methods for measuring airborne dust in the workplace.

(6)

Model Answer: •

Dust lamp

I dust

•

Collection

offilter

•

Total dust - use total dust sampler

•

Respirable dust - use cyclone

(preweighed)

by active sampling

•

Personal or static (fixed) sampling

•

Pre set flow rate of pump

•

Measure

o

•

5.

deposits

time of sampling Indirect measurement •

By weight

•

By microscopy

(pump)

I analysis: for asbestos (fibre count)

Direct reading instrument

Identify control measures to reduce the risk of accidents from reversing vehicles in the workplace.

(8)

Model Answer: •

6.

Avoid need to reverse / 1way systems / turning circles

•

Segregation

•

Audible vehicle alarm

of pedestrians

•

Mirrors on vehicles

•

Mirrors at blind corners

• •

Refuges Workplace lighting

•

Wear Hi-Viz jackets

• •

CCTVin cab Prohibit unauthorised

• • •

Use of banks man Site rules Driver training

e.g. barriers / warning signs and markings

persons

Identify control measures to reduce the risk of electric shock when using a portable electric drill.

(8)

Model Answer:

7.

•

Cover / protect / re-route cable

•

Armour cable

• • •

Use RCD Use double insulated drill IIDV drill with centre tapped to earth transformers

•

Minimise

• •

Cordless / battery drill Suitable drill for environment,

• • •

PAT (testing) Visual inspection / user checks Fuse rating correct

(CTE)

length of cable / extensions / suitable outlets e.g. air drill for flammable

vapours

Identify EIGHTsafe working practices that should be considered to reduce the risk when using a mobile tower scaffold. (8) Model Answer:

8.

• • • •

Erected by competent persons Used within SWL / not overload Praperly braced / no defective components Use of edge protection - guard rails and toe boards

• •

Use of outriggers Height to least base ration (use within)

•

No moving the tower with people or materials

• •

Erect on firm, level ground Avoid overhead obstacles

•

Wheels locked when in use

•

Tied of side loading

•

Cordon off work area

on it

(a) Identify TWO types of hazardous substance.

(2)

Model Answer: Any hazardous substance, e.g. carbon dioxide, carbon monoxide, (NOT BIOLOGICAL

silica, asbestos, etc.

HAZARDS!)

(b) Outline personal hygiene controls to reduce the risk of ingestion of a hazardous substance. Model Answer: •

Personal cleanliness, e.g. wash hands No smoking at work

(6)

• • • • • 9.

No eating / drinking at work Use PPE, e.g. gloves Wash soiled clothes (laundry) Change work clothes and shower Avoid hands to mouth contact, e.g. do not bite fingernails

Outline the factors to be considered for the successful evacuation of persons from a workplace in the event of fire. (8) Model Answer: • Fire detection (smoke / heat), break glasses & fire alarm • Fire protected resistant escape route • Alternative fire escape routes • Unobstructed escape route / exit doors not locked • Width of exits • Number of exits • Travel distances • Emergency lighting • Escape / fire exit signage • Provision of fire doors / closed to prevent fire spread • Safe assembly point • Fire marshals, assist disabled • Fire drills/ practice • Roll call • Provision of fire-fighting equipment

10. A maintenance worker regularly uses a hand held grinder, and is exposed to vibration. (a) Identify the symptoms that the worker may experience due to this exposure.

(2)

Model Answer: • Numbness / tingling • Blanching of fingers (white fingers) • Swollen / painful joints • Reduced strength / grip • Reduced sense of touch / feeling • Reduced dexterity (b) Outline SIX control measures that can be used to reduce the risk from vibration.

(6)

Model Answer: • Substitute with lower vibration tools • Reduce exposure time / frequent breaks / job rotation • Health surveillance • Planned maintenance • Improve tool grip / fit anti-vibrate grip • Avoid cold temperature / space constraints • Anti-vibration gloves / gloves to keep hands warm • Training / health promotion • Keep operators warm and dry • Stop smoking / exercise fingers during breaks

11. (a) Identify FOURhazards associated with the use of battery-powered fork lift trucks. Model Answer: 1. Battery charging - hydrogen 2. Battery short circuit / overcharging - explosion

(4)

3. 4. 5.

to ')(J

Battery acid exposure - acid burns Handling of batteries - manual handling injuries Collision with people / silent running - injury

Outline the control measures for EACH of the hazards identified in (a).

Model Answer:

1. 2. 3. 4. 5.

Adequate ventilation / avoid ignition sources Insulation / connection procedure / over charge protection PPE,e.g. gloves faceshield apron Use mechanical aids Drivers to sound horn when approaching people / segregation of pedestrian and vehicle routes

(4)