Respiratory Protection Air Sampling
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Transcript of Respiratory Protection Air Sampling
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Radiation Protection Technology
Respiratory ProtectionAir Sampling
Radiological Safety and ResponseRPT-243-PE-6
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Radiation Protection Technology
• Inspect a full-face negative pressure respirator.• Perform pre-use checks on a full-face negative
pressure respirator.• Don a full-face negative pressure respirator.• Remove a full-face negative pressure respirator.
• Obtain a air sample using available equipment
• Perform required analysis and calculations to determine the airborne radioactivity concentration.
Learning OutcomesUpon completion of this lesson, the student will be able to:
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Radiation Protection Technology
Respiratory Protection
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Radiation Protection Technology
Prior to Use in the Field
• Medical Evaluation
• Fit Tested
• Field Tested (negative and positive pressure check)
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Radiation Protection Technology
In the Mock-up Area
• Since not all of the students have been screened medically – nor fit tested, you are not allowed to wear a respiratory protection device.
• Therefore, you are not permitted to put the masks on your face with the filters installed.
• Without the filters, it IS NOT a respiratory protection device.
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Radiation Protection Technology
http://www.sharpesafety.com/catalog/images/7/1437.jpg
Inspection
• Lens
• Face piece - sized based on fit test
• Harness
• Nose cup
• Exhalation valve
• Filters
• Using a respirator wipe, clean
the interior of the mask, sealing surface, and
the exhalation valve thoroughly.
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Radiation Protection Technology
Inspection
Access the exhalation
valve
Squeeze the sides
Remove the cover
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Radiation Protection Technology
Inspection
Check for foreign material under flapper valve
and clean thoroughly
then replace cover
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Radiation Protection Technology
Inspection
Inspect and thoroughly clean the sealing surface and interior
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Radiation Protection Technology
Fitting
• Loosen straps• Insert chin• Pull harness over head• Center harness on back of head• Tighten neck straps – one side at a time• Tighten top straps to adjust fit• Tighten temple straps (if present) – one at a
time
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Radiation Protection Technology
User Seal Check
• Positive pressure test – – Cup one hand under the component housing cover
(not possible on all models)– Cover the exhalation valve vents with the other hand
(not possible on all models)– Blow into the mask– Face blank should move away from face– Blow into the mask with exhalation
uncovered and ensure it operates
http://www.cdc.gov/niosh/images/99-143l.jpg
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Radiation Protection Technology
User Seal Check
• Negative pressure test– Use palms of hands to block
filter air inlets (filter ports for mock-up)
– Inhale gently, hold breath for 10 seconds
– Face piece should collapse against face, and remain there http://www.cdc.gov/niosh/images/99-143l.jpg
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Radiation Protection Technology
Final Steps Before Entry
• Ensure hood is around face-piece and fastened under the chin.
• Secure the hood to the coveralls as needed with Velcro closure (tape for DOE).
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Radiation Protection Technology
Doffing
• Remove Outer Gloves
• Remove Hood
• Bend at the waist
• Reach under mask at chin
• Pull mask off of face at chin
• Remove mask off the top of head – out and away
• Disposition the mask as directed.
• For the PE, bag the respirator across the SOP as coached by the Instructor.
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Radiation Protection Technology
Air Sampling
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Radiation Protection Technology
Filter Type Sampling
• Most common form of air sampling
• Air drawn through filter paper at known flow rate for known length of time
• Many varieties
• Sometimes taken in tandem with a chemical filter cartridge
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Radiation Protection Technology
Basic Air Sampler
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Radiation Protection Technology
Air Samplers
• Portable• Fixed
– Contaminated area– Buffer area– Stack (effluent)
• Incorporate monitor – detector looking at filter paper
• Personal – breathing zone
http://www.fjspecialty.com/lv-14m.htm
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Radiation Protection Technology
Personal Air Sampler (PAS)
•Worn by worker
•Breathing Zone sampler
•Low flow – 2 L/m
•Battery operated
•Must be handled carefully
to avoid contaminating filter
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Radiation Protection Technology
Regulated Air Sampler (RAS)
• Installed or portable
• Low volume filter paper sampler < 7cfm
• Used to verify containment integrity
• Determine work place ambient radioactivity
• Sample occupied areas
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Radiation Protection Technology
In the Mock-Up
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Radiation Protection Technology
High Volume Air Sampler(Staplex)
• Short duration sampling
• Area coverage
• Job-site decisions
• Accident coverage
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Radiation Protection Technology
High Volume Air Sampler(Staplex)
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Radiation Protection Technology
High Volume Air Sampler(Staplex)
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Radiation Protection Technology
High Volume Air Sampler(Staplex)
Flow Meter on the rear
Read to the bottom of the
ball
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Radiation Protection Technology
Variable Flow Rate Air Sampler(Radeco)
• Short duration sampling
• Manual & Variable Mode
• Area coverage
• Job-site decisions
• Accident coverage
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Radiation Protection Technology
Variable Flow Rate Air Sampler(Radeco)
Glass Fiber Filter paper
“fuzzy side out
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Radiation Protection Technology
Variable Flow Rate Air Sampler(Radeco)
Flow Meter on Side Read to the bottom of
the ball
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Radiation Protection Technology
Air Sample Activity Calculation
• Complete Air Sample Data Sheets
• Calculate total volume (flow rate x time)
• Count air sample filter with β-γfrisker and α frisker (quick count)
• Prepare filter paper for isotopic analysis and delivery to the count room
• Attach Air Sample Data Sheets to the Student Guide
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Radiation Protection Technology
Scenario Brief
• The 509 RCA posted as an airborne radioactivity area – respiratory protection required for entry.
• A full set of PCs is required for entry into the 509 RCA.• Obtain two ten minute air samples• Exit the area remove respirator, PCs and bag material
into the 508 room.• Count and calculate the activity for a quick count
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Radiation Protection Technology
Other Instructions
• This practical exercise may be completed individually, or with a partner except each partner must draw one air sample.
• The calculation portion of the exercise must be performed independently.
• Follow the instructions in the exercise guide. • Use disposable latex gloves for your outer set of gloves.• Wipe out the respirator with a sanitizing wipe prior to
donning the mask and again after removal and prior to storing.
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Radiation Protection Technology
Other Instructions
• Do not separate this package. Maintain it intact.• Record all answers on the document – no extra pages.• Return the RPT-243-PE-6 Practical Exercise Guide
document to the instructor as directed.
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Radiation Protection Technology
Time to DO!