Sundstrom sea half and full face agserv expo

Copyright © 2010 by The SEA Group

Respiratory protection

Step 2: Higher workload – Powered Air-Purifying Respirators

Step 1: Lower workload – filtering devices


Step 1: Low workload – filtering devices

Low exposure Higher exposure


Contents• When can filter protection be used?• Types of filter protection• Ways of exposure/Respiratory system• Airborne contaminants and hazards• Respiratory protective device program• Gas filters • Particle filters• Real life and protection factors• Half face masks/Full face masks• Check prior to use• Cleaning• Maintenance


When can filter protection be used?

• At normal oxygen concentrations • If the contaminant is known and can be trapped in a filter

• If the contaminant and its concentration is not so high that it poses an immediate danger to life and health

• Clear warning properties (smell or taste)

• Where the authorities do not prescribe another form of respiratory protection devices


Ways of exposure

the main way of exposure is inhalation of airborne hazards

• Through the digestive system

• Through the skin

• Through inhalation


1. Inhalable dust (100 μm)

2. Thoracic dust (10 μm)

3. Respirable dust (4 μm)

= Total dust

Particles are split into three groups according to their health risks


Dust/smoke/mist

Two types of contaminants – three risk areas

Gas/fumes Lack of oxygen


Inorganic particles

Chrysotile - asbestos

Silica dust

Crocidolite - asbestos Bacteria

Fungal spores

Organic particles

Mites

Particles can be both liquid and solid

Particles


Risks

• Permanent lung damage (e.g. silicosis)• Damage to other vital organs (e.g. liver, brain)• Cancer• Fatal injury• Chronic illness (asthma, allergies, etc.)


Respiratory protection must always be part of a respiratory protection program

AS/NZS1715:2009

Respiratory protective equipment must not simply be given to users in the belief that it will automatically provide an adequate level of protection!

A respiratory protection program must include the following:• Identification of hazardous substances• Risk assessment• Mitigation of risk through the implementation of technical measures• Choice of appropriate respiratory protection• Training in use, fit and maintenance• Appoint and train a competent person• Document all procedures


Who has the responsibility? AS/NZS1715:2009

Employer's legal obligations:• To have the expertise to create and manage a respiratory protection program• To provide protection devices that are suitable for both users and their tasks• To provide training in use, fit and maintenance• To monitor compliance with the program• To produce documentation

Employee's obligations:• To comply with the program• To use respiratory protection devices in the prescribed manner• To report any problems occurring when using the equipment


Gas filters - what happens to the gas?

Gas molecules are bound in the various types of porous carbon

1 gram of carbon can have an active surface area of 200—2,000 m2

Lignite

Coal

Peat

Charcoal

Coconut shell

Text


Gas filter breakthrough

A

B

Time

PPM

Breakthrough occurs at an accelerating rate


Gas Filters, Half and Full Facemasks

Class Test concentration 1 0.1 percent by volume = 1 000 ppm2 0.5 percent by volume = 5,000 ppm3 1 percent by volume = 10,000 ppm

Filter type

Protects against Colour code

A Organic substances with boiling point above +65ºC

B Inorganic substancesE Acid gasesK Ammonia and certain amines


Sundström gas filters

A. Activated carbonB. Polyester filter discC. Polypropylene casingD. Abbreviated label with use-by date

A

B

C D


Gas filters SR 217 A1 and SR 218-5 A2 protect against organic contaminants with a boiling point above +65ºC. Gas filters SR 315 ABE1 and SR 294 ABE2 protect against organic contaminants with a boiling point above +65º, inorganic contaminants and acid gases/fumes. Gas filters SR 316 K1 and SR 295 K2 protect against ammonia and certain amines.

Gas filter SR 297 ABEK1 protects against the same type of contaminants as gas filter SR 315 and also protects against ammonia.

Sundström gas filters


The service life of a gasfilter is affected by the following:• Substance and its concentration

• Volume of air passing through the filter

• Humidity and temperature

• Storage (the use-by date refers to unopened pack)

• Workplace measurements (if possible) are preferable for the calculation of filter service life

• Clear warning properties (basic assumption for use of filter protection)

• Smell and taste not recommended for use as a regular measurement • Filter replacement policy with good margin

Principles for replacing gas filters:


Particle filter – filtration technology: two methods

Electrostatic MechanicalUnable to handle air speeds above 95 litres/min

Handles air speeds above 250 litres/min

Small filter area means a short service life for the filter

Large filter area means a long service life for the filter

Electrostatically charged material loses its charge (filtering ability) when it becomes damp

Filters equally well in dry and humid environments


Particle filters

Type(AS/NZS1716:2003)

Filtration efficiency dry particles wet particles

P1 80 %

P2 94 %

P3 99,95 %


Sundström particle filter

A. Filtering mediumB. Hot-melt adhesiveC. LabelD. CasingE. Sealing gasket


Particle filters SR 510 and SR 610• Mechanical filtering

• Large filter area (1300 cm2) affords low inhalation resistance and a long service life

• Separation level, military standard > 99.997%• Same filter used in half and full facemasks, as well as fan-assisted masks

• Pre-filter SR 221 offers good economy

• SR 610 with standard thread


Which particle filter?

Class Filtration effeciency Filtering quota

Disposable P3 99 % 100/1 = 100

P3 99.95 % 100/0.05 = 2 000

SR 510 P3 99.997 % 100/0.003 = 33 000


Service life of a particle filter is affected by the following:• Contaminant and its concentration

• Speed of air passing through the filter

• Humidity and temperature

• Storage (the use-by date refers to unopened pack)

• Blocked particle filter (or partially blocked – hard to breathe through)

• Damaged filter

Principles for replacing particle filters:


Combination filter in two different ways


Real life


Leakage through:

= Total leakage

+ Filter+ Exhalation valves

+ Between face & mask

Leakage pathways


Importance of 100 % wear time

0

200

400

600

800

1000

1200

0 min 2,5 min 5 min 10 min 20 min 30 min 40 min 50 min

Prot

ectio

n fa

ctor


Protection factor & BeardsBeards and protection factor

0

200

400

600

800

1000

1200

Clean shaven Stubble Beard

< 1% remaining

< 10% remaining


Half facemask/silicone facemaskHalf facemasks cover nose, mouth and chin

Comprising:• Mask body• Inhalation and exhalation valve(s)• Holder for replaceable filter• Head harness


Half facemask SR 100

• Body and membrane made from silicon

• Dual exhalation valves produce low exhalation resistance• Easily adjustable head harness• Simple filter program• Can be connected to compressed

air using SR 307


Sundström half facemask SR 100

1. Body2. Filter housing3. Head harness4. Exhalation valve seat5. Exhalation membrane6. Valve cover7. Inhalation membrane8. Particle filter9. Gas filter 10.Pre-filter11.Pre-filter holder


SR 100 accessories and spare parts


Full face masksFull face masks cover eyes, nose, mouth and chin

Comprising:• Mask body with inner mask• Visor• Inhalation and exhalation valve(s)• Holder for replaceable filter• Harness


Full facemask SR 200 • Integrated outer and inner mask • Unique air circulation affords low inhalation resistance• Dual exhalation valves produce low exhalation resistance• Large field of vision• Easily adjustable textile harness• Simple filter program


Sundström full face mask SR 200

1. Polycarbonate visor2. Upper frame half3. Head harness4a Exhalation membrane4b Valve cover4c Inhalation membrane4d Inhalation membrane5 Pre-filter holder6 Filter adapter 7 Grommet8 Gas filter9 Particle filter10 Pre-filter


SR 200 accessories and spare parts


Check before use: SR 100 and SR 200

Function check – test disc SR 322

• Visual inspection of the mask and its parts• Fit filter• Place test disc SR 322 in filter holder• Fit pre-filter holder on filter• Place the mask on your face and inhale• The mask must stay on for 5–10 seconds


Cleaning: SR 100 and SR 200

Daily cleaning

• Daily cleaning is to be done using cleaning SR 5226 cleaning wipes • Wipe the inside of the mask• Remove the exhalation membrane and clean the exhalation valves

Heavy cleaning

• Mask is dishwasher-safe • Use a mild detergent and wash at +40°C• First remove the head harness and membrane• Wash mask and head harness in a laundry bag


Discussion/Questions?

Healthcare

Sundstrom sea half and full face agserv expo