-
What is the purpose of the 6 gas analyzer?
- Detect OET.
- 1. Oxygen (19.5%<O2<22%)
- 2. Explosives (<10% LEL)
- 3. Toxins (Above NIOSH IDLH levels)
-
How often must All Hands require Hazard Awareness training?
Upon reporting and annually thereafter.
-
What instruction or bill outlines the requirements to be met in the event of an emergency GFE evolution?
Toxic Gas Bill
-
What are two purposes of the Gas Free Program?
- 1. To ensure a safe working and living environment for the crew
- 2. To provide an all hands hazard awareness training program
-
How often is the Gas Free Program evaluated and by whom?
- 1. Annually
- 2. Safety Officer
-
What are the Recertification Procedures for all GF Personnel?
- 1. Annual Verification of CPR
- 2. Emergency Rescue Drill & Documented
- 3. Engaged in GFE During the Year Issued 10 Certificates.
- a. If Above Has Not Been Satisfied, Complete 5 Gas Free Evolutions Under Supervision of a Certified GFE.
- b. If Above Is Not Possible, Complete an Oral/Written Exam & a Practical Exercise.
-
When may the 40 hour OJT requirement for the GFE be waived?
- 1. Graduated Formal School Within 36 months of reporting.
- 2. Unit does not have a qualified GFE aboard.
- 3. Service member is a USCG Engineering Petty Officer.
-
Where are gas free certificates retained/posted?
- 1. Original - Gas Free Log (Retain 1 year)
- 2. OOD (QD or Bridge)
- 3. All accesses to the space
- 4. Division Requesting the Service
- 5. DC Central
-
What are the requirements for a space to be considered “Safe for Personnel/Safe for Hot Work”?
- 1. 19.5% < O2 < 22 .0%
- 2. Toxins less than PEL
- 3. All Flammables removed (LEL = 0)
- 4. All boundary spaces protected
-
How long is a Gas Free Certificate good for? How many times can it be recertified?
- 1. 8 hours
- 2. Two times for 8 hours each
-
When is the CO required to sign the Gas Free Certificate?
- 1. Gas freeing IDLH space
- 2. Gas freeing for civilian contractors
- 3. Gas freeing for foreigner overseas
- 4. Hot Work adjacent to Magazines (never above or within 5 feet)
-
What are the requirements for a space to be considered "Not Safe for Personnel/Not Safe for Hot Work?"
- 1. Oxygen deficient or rich
- 2. IDLH Atmosphere
- 3. Danger of Fire or Explosion in Presence of Hotwork
-
What are the requirements for a space to be considered "Not Safe for Personnel W/O Protection/Not Safe for Hot Work?"
- 1. Provides provisional entry into space.
- 2. Toxics exceed PEL or Unity, but less than IDLH
- 3. Explosives >0% and <10%
- 4. Hot work prohibited or not requested
Note: Hot work is prohibited in the space or in the boundary spaces for which a provisional certificate is issued.
-
What are the requirements for a space to be considered "Safe for Personnel/Not Safe for Hotwork?"
- 1. Toxics below PEL
- 2. Sufficient oxygen
- 3. Danger of explosion or excessive toxicants in presence of hot work or hot work not requested
-
What are the requirements for a space to be considered "Not Safe for Personnel Inside/Safe for Hotwork Outside" and when would it be used?
- 1. Pressed up or Inerted
- 2. This is an emergency procedure and not one used routinely
-
When can you Gas Free for a Civilian?
- 1. Extreme emergency (failure to perform GFE services would increase liability).
- 2. CO permission is required.
-
When may a civilian gas free for you?
- 1. For QA (CO retains right to have S/F conduct gas free regardless).
- 2. When in a private shipyard (IAW MOA).
-
When may you gas free for a foreign contractor?
- 1. Outside US Waters.
- 2. No Shore Maritime GFE available.
- 3. No local Competent Person available.
-
What is the Procedure for Military & Civilian Dual Occupancy in a space?
- 1. Both GFE and Contractor will independently gas free the space
- 2. GFE will inform contractor of his findings
- 3. GFE will inform contractor that he retains legal obligation for the safety of contractor personnel in the space
-
When may afloat GFE provide service to non-ship’s force uniformed personnel In-port?
- 1. To conduct Assessments
- 2. To conduct Inspections
- 3. To develop Repair Work Packages
-
What are the classes of respiratory protection equipment?
- 1. Air Purifying
- 2. Supplied Air
-
What NSTM covers PPE?
NSTM 077
-
What publication would you find information on color coding for air purifying respirator cartridges?
NAVOSH Manual (5100.19E)
-
When may air be blown into a space vs. drawn out of a space?
- 1. No flammables present or being generated
- 2. No toxics present or being generated
- 3. Only to provide clean air for breathing and comfort
-
In the dilution formula, how many complete air changes are required and what is the timeframe?
One complete air change in three minutes.
-
What is "short circuiting" as it pertains to ventilation and how do you fix it?
- 1. Source of Make-Up air is too close to exhaust inlet ducting.
- 2. Place the trunk further into the space.
-
Which Class of Hot Work ALWAYS requires a Fire Watch?
Class I: High Energy Sparks
-
Flammables Must be Moved How Far From Work Site?
35 ft
-
Surface Coatings Should be Cleared Away How Many Inches?
4 inches
-
What is the 5 Ft Rule About?
Maintain 5 Ft Boundary Away from Magazine Bulkheads
-
What are some general safety precautions required to be followed for tank cleaning?
- 1. Smoking lamp out
- 2. 200’ exclusion zone
- 3. PPE
- 4. Safety observer
- 5. Non-spark producing tools
- 6. Continuous ventilation
- 7. SAR
-
What is the preferred medium for inerting?
Dry Nitrogen
-
What are the different methods of tank cleaning?
- 1. Hot or Cold Water Wash
- 2. Steam Cleaning
- 3. Butterworthing / Wheelerizing
- 4. Chemical Cleaning
- 5. Biological Cleaning
-
Who must be contacted prior to spray painting interior to the ship?
The GFE
-
What are the GFE requirements after spray painting is complete?
- 1. Continue to ventilate until space is clear.
- 2. Secure ventilation then let the air settle for 10 minutes.
- 3. Test the atmosphere (re-ventilate as needed).
-
What is the publication in which CHT Tank Entry Procedures are prescribed?
NSTM 593 - Pollution Control
-
When are you allowed to perform CHT Tank Entry Procedures?
- 1. In an Emergency.
- 2. CO permission.
-
When May Rescuers Enter a Confined Space?
When the GFE/GFEA orders entry.
-
Who is on the Primary Rescue Team during an Emergency Rescue in a Toxic Gas situation?
- 1. One Investigator
- 2. One Rescuer
-
During Personnel Casualty Transport, what is the priority of triage?
- 1. CAB'S (Circulatory, Airway, Breathing)
- 2. Control Bleeding
- 3. Treat for Shock
- 4. Treat Broken Bones
- 5. Transport to Medical
-
Where are copies of Gas Free Certificates kept?
- 1. All accesses to the space.
- 2. GFE Files (Original copy).
- 3. Division Requesting Services.
- 4. OOD (Quarterdeck or Bridge).
- 5. DC Central.
Note: Original must be kept for 1 year.
-
What are the requirements to be the Gas Free Engineer?
- 1. 1 per Ship
- 2. E-7 or Above
- 3. CO’s Designation Letter
- 4. Annual CPR Verification
- 5. Formal School
- 6. 40 Hours Practical Work U/I (waiverable)
-
What are the requirements to be the Gas Free Engineer Assistant?
- 1. 1 per Ship
- 2. E-6 or Above
- 3. CO’s Designation Letter
- 4. Annual CPR Verification
- 5. Formal School
-
What are the requirements to be a Gas Free Engineer Petty Officer?
- 1. 1 per IET (minimum)
- 2. E-4 or above
- 3. CO’s Designation Letter
- 4. Annual CPR Verification
- 5. Formal School
- 6. PQS (NAVEDTRA 43704, 316)
-
What is Ignition Temperature?
Minimum temperature at which self sustained combustion occurs without an external ignition source.
-
What is Fire Point?
Temperature at which sufficient vapors are released to support continuous combustion once ignited.
-
What is Flash Point?
Minimum temperature at which sufficient vapors are released to form an ignitable mixture.
-
What are the rules regarding hot work in vicinity of ammunition?
- 1. Remove any/all ammunition prior to Availability or Overhaul.
- 2. No hot work in any space containing ammunition.
- 3. CO must approve in writing any hot work in adjacent spaces.
- 4. Apply 5 foot rule for adjacent spaces.
-
Describe Additive Effects.
If there is more than one toxicant product in a space undergoing testing, the cumulative effects of the two or more products may be above unity, even though the PELs for any one of the products has not been exceeded.
-
What is NSTM 593?
Pollution Control (Sec 4, Sewage)
-
What is NSTM 631?
Preservation of Ships in Service (Sec 2. Safety Information)
-
What is the NAVSEA OP 4?
Ammunition Afloat (Ch 2, General Regulations)
-
What is the risk of an oxygen rich atmosphere and at what percentage does this occur?
- 1. Considered IDLH due to exceptional risk of fire.
- 2. Greater than 22%
-
What is the risk of an oxygen deficient atmosphere and at what percentage does this occur?
- 1. Considered IDLH by OSHA due to lack of coordination, perception, and judgement.
- 2. Less than 19.5%.
-
What is the purpose of NIOSH?
National Institute for Safety and Health tests and approves respiratory equipment and recommends toxicity exposure limits to OSHA.
-
What is/are the respiratory protection requirements in an IDLH space?
Supplied Air Respirator (SAR) w/15 min backup air (SCBA).
-
What is/are the respiratory protection requirements when toxins are above PEL?
Respiratory protection is mandatory (filter type respirator or supplied air respirator as appropriate).
-
What is/are the respiratory protection requirements when toxins are below PEL?
Respiratory protection is optional.
-
What are the different tank cleaning methods?
- 1. Chemical
- 2. Butterworthing
- 3. Steam
- 4. Water Wash
- 5. Biological
-
How is steam cleaning of a tank accomplished?
- 1. Temperature may not exceed 230 deg F.
- 2. Apply 50 or 150 PSI steam for a period of 24 hours through a tank top connection.
- 3. Used to steam out MOGAS tanks.
- 4. May NOT be used in plastic or epoxy coated tanks (e.g. JP-5).
-
What is inerting?
- 1. Use CO2 (heavier than air) or N2 (lighter than air and preferred medium) to maintain <1% O2 concentration.
- 2. Work outside of the space shall be certified and maintained as "Safe for Hot Work"
- 3. Upon completion of work, dispose of displaced vapor and inerting medium safely.
-
What emergency rescue equipment are you required to have?
- 1. 5 SCBA's: 2 PASP's, 5 RASP's with 55 min of air per PASP (1 bottle).
- 2. 4 safety harnesses and safety lines
- 3. 2 radios or 3 SP Phones with salt and pepper lines on scene.
- 4. First aid kit and stretcher
- 5. Chain fall
- 6. Detection equipment
- 7. Explosion proof lighting, flashlight, drop lights, or chem lights.
- 8. Additional PPE as required.
-
What are the advantages of the PASP/RASP over an SCBA?
- 1. Longer stay time
- 2. 15 minute Back-up air supply
- 3. Ease in Rescue
- 4. Ease in Egress
-
What is the composition of the Primary Rescue Team?
- 1. One Investigator
- 2. One Rescuer
Conducts initial contact, assessment, & safe removal.
Investigator has the comms.
-
What is the composition of the Secondary Rescue Team?
- 1. GFE determines the number
- 2. 2+1 minimum size
- 3. Don respiratory equipment and stand by to provide assistance to the Primary Rescue Team.
-
How many Rescue Team Attendants are required and what is their purpose?
- 1. One per rescuer.
- 2. Helps to don gear.
- 3. Tends safety line and chain fall.
- 4. Tends SAR/SCBA air hoses.
- 5. Maintains comms with the space.
-
What are the operating steps for the Draeger tube?
- 1. Insert unbroken tube.
- 2. Squeeze bellows.
- 3. Wait 30 minutes.
- 4. Chain should still have slack.
- 5. Read instruction sheet.
- 6. Break off both ends of the tube.
- 7. Insert tube with the arrow pointing to the pump.
- 8. Squeeze bellows required number of times (Indicated by N= on the tube).
- 9. Determine readings.
-
When is the CO required to sign off on a Gas Free evolution?
- 1. Gas freeing an IDLH space.
- 2. Gas freeing for civilian contractors.
- 3. Gas freeing for a foreigner overseas.
- 4. Hot work in vicinity (5 ft) of a magazine.
-
Why do we have ventilation requirements and how are they accomplished?
- 1. Required to control the flammability and toxicity hazard.
- 2. Use dilution-type ventilation to protect adjacent areas. This ensures vapor concentrations remain below 10% LEL.
- 3. Run ventilation continuously.
-
What is the purpose of general ventilation?
- 1. Provides uncontaminated air for breathing or general comfort.
- 2. Can be supply or exhaust.
- 3. Rated for one complete air change every three minutes.
-
What is the purpose of local exhaust ventilation?
- 1. Captures contaminants as they are generated.
- 2. Draws them through exhaust ductwork located 6-10 inches from the work being conducted.
- 3. Effective for welding and solvent use.
- 4. Exhaust only.
- 5. The work zone farthest from the exhaust inlet requires airflow of 100 fpm towards the exhaust.
-
What does the dilution ventilation formula calculate?
- 1. One complete air change in three minutes.
- 2. If welding, compare the results to NSTM 074 Vol 3 (pg. 74-78) and use the larger number for ventilation requirements.
-
Name three toxicants that are associated with sewage.
- 1. H2S
- 2. Ammonia
- 3. Methane
-
What toxicant is associated with rust?
Hydrogen
-
Name two toxicants that represent an asphyxiation hazard.
- 1. Nitrogen dioxide
- 2. Ammonia
-
What toxicants are associated with combustion?
-
When is Oxygen considered IDLH?
- 1. Above 22%
- 2. Below 19.5%
-
When are explosives considered IDLH?
When concentration exceeds 10% LEL
-
Name four toxicants that are heavier than air.
- 1. CO2
- 2. H2S
- 3. HALON
- 4. Freon
-
Name four toxicants that are lighter than air.
- 1. CO
- 2. Ammonia
- 3. Hydrogen
- 4. Methane
-
What type of information is on an MSDS?
- 1. General Info
- 2. Physical/Chem. Characteristics
- 3. Fire/Explosion Data
- 4. Reactivity Data
- 5. Health Hazards
- 6. Precautions for Safe Handling and Control Measures
-
What are the three tests required for calibrating the 6-gas analyzer?
- 1. Fresh Air test (Done prior to each use)
- 2. Bump test (daily before use)
- 3. Monthly calibration
-
What toxins are required to be tested for following a class "B" fire? Where can this be found?
- 1. Carbon Dioxide
- 2. Carbon Monoxide
- 3. Hydrogen Chloride
- 4. Hydrogen Cyanide
- 5. Hydrocarbons
Per NSTM 555-7.10.3
-
What are the key sections of the NSTM 074 to be familiar with and why?
- 1. Section 20 = Navy Gas Free Certificates
- 2. Section 21 = Ventilation
- 3. Section 22 = Hot Work
- 4. Appendix C = Sample Gas Free Engineering Notebook
- 5. Appendix D = Navy Gas Free Certification and Test Log
- 6. Appendix E = Shipboard Hazardous Atmospheres and Compartments Identification Tables
- 7. Appendix G = Chemical Names, PEL and IDLH
-
Where can respirator cartridge colors identifiers be found?
- 1. Manufacturer's Chart
- 2. NAVOSH Manual
- 3. Industrial Hygienists' Field Operators Manual (IHFOM)
-
What are the audit requirements and procedures for the GF program?
- 1. Ship's Safety Officer shall audit annually.
- 2. Audit follows NAVSEA checklist found on the NAVSEA DC page.
- 3. Evaluates the GFE Service Personnel and recertification requirements.
- 4. Document Crew Training upon reporting and annually.
- 5. GFE personnel shall have letters of designation and qualifications shall be recorded in individual's service record.
-
What is the definition of hot work?
- 1. Flame heating, welding, torch cutting, brazing, or carbon arc gouging.
- 2. Any operation producing temperatures of 240 deg C/400 deg F.
- 3. Any operation occurring in the presence of flammables which require the use of the presence of an ignition source.
-
What is the difference between Class I and Class II flames in vicinity of Alpha materials?
- 1. Class I - High energy, scattered sparks.
- 2. Class II - Minimal energy, localized sparks.
-
What are the gas free requirements when conducting sewage cleanup?
- 1. Gas free every two hours.
- 2. Gas free every hour if temperatures are above 90 deg F.
-
What are the nine phases to HAZMAT Spill Clean-Up Procedures per OPNAVINST 5100.19?
- 1. Discovery and Notification
- 2. Initiation of Action
- 3. Evaluation
- 4. Containment & Damage Control
- 5. Dispersion of Gases/Vapors
- 6. Cleanup & Decontamination
- 7. Disposal of Contaminated Materials
- 8. Certification for Re-Entry
- 9. Follow-Up Reports
-
What color indicates a Battle Dressing Station (BDS) on your DC plates?
Green
-
How do you transport casualties while in a stretcher?
- 1. Feet first
- 2. Head first only when transporting up or down ladders.
-
Where can you find the specific requirements for Battle Dressing Stations?
CNSP/CNSL INST 6000, Appendix K
-
What are the four stretcher types?
- 1. Stokes Stretcher
- 2. Miller Board (Litter Splint)
- 3. Army Litter
- 4. Reeves Sleeve 2
-
What is the purpose of the Gas Free Program?
- 1. Provide a safe working and living environment for the crew.
- 2. Provide Hazard Awareness Training of a general nature for the crew.
-
When can you blow air into a space?
- 1. No flammables present or being generated.
- 2. No toxics present or being generated.
- 3. Only to provide clean air for breathing and comfort.
-
When conducting a bump test with the 6-gas analyzer, what is the delta (in percentage) that is acceptable?
90-110% of cylinder value
-
How many hoses/ducts can be used with a Ramfan 2000?
3, 15', ducts per fan.
-
What ways do toxicants enter the body?
- 1. Ingestion (eating, drinking)
- 2. Absorption (touching)
- 3. Inhalation (breathing)
-
What tools are available prior to opening a compartment to determine potential hazards?
- 1. Previous chits.
- 2. Tag Out Audit.
- 3. DC Book.
- 4. WAF log.
-
When is a retest of a Gas Free Chit required?
- 1. Entry or Work Delay
- 2. Expiration (8 hours)
- 3. Hazard Detected
- 4. Ship Movement
- 5. Securing Ventilation
- 6. New Operations or Materials
- 7. Closing Space or Temporary Shutdown
-
On a gas free chit, what are the three ventilation options?
- 1. Local exhaust Ventilation
- a. Welding, Painting, Using Solvents
- 2. Dilution Ventilation
- a. Reducing toxins, Controlling flammable vapors
- 3. General Exhaust Ventilation
- b. Providing cool comfort air in a hazard-free environment
-
In a tank cleaning evolution, what is the difference between an IDLH and non-IDLH process?
IDLH requires SAR/SCBA and CO permission prior to conducting work.
-
What constitutes continuous atmospheric testing?
Conducting a test every 15 minutes
-
What constitutes a periodic atmospheric test?
Any periodicity greater than 15 minutes.
-
What is recirculation?
When the exhaust of a space is located too close to the intake.
-
What are the modes of operation for Gray and Black water holding tanks?
- 1. Inport - All water and soil drains to tank, then to pier riser.
- 2. Transit - Within 3 nm of coast. All black water diverts to tank, grey water to below W/L (to tank), grey water above W/L (overboard)
- 3. At Sea - Beyond 3nm of coast. All grey and black water discharges overboard.
-
When can the GFE/GFEA issue a certificate for initial work?
- 1. Confine spaces that contain, or have not contained, toxic or flammable materials.
- 2. Operations which generate or have the potential to generate toxic levels above PEL.
- 3. Operations that do not result in IDLH flammable and O2 levels.
-
When can the GFEPO issue a certification for initial work?
- 1. Cold Work in spaces that do not contain, or have not contained, toxic or flammable materials.
- 2. Operations which do not naturally generate toxic levels above PEL.
- 3. Operations that do not result in IDLH flammable and O2 levels.
-
When may the GFE/GFEA delegate initial test responsibilities?
- 1. Written approval in CO designation letter
- 2. Operations repetitive and routine
- 3. No Space immediately designated as IDLH (sewage tanks, fuel tanks, etc.)
- 4. Testing and Certification procedures clearly established in GFE instruction.
- 5. GFEPO trained and qualified to perform delegated tasks.
-
What are the ventilation requirements when welding and for what size rod?
- 1. 2,000 cu ft per welder, if a 5/32 or 3/16 rod is used.
- 2. 3,500 cu ft per welder, if a 1/4 rod is used.
- 3. 4,500 cu ft per welder, if a 3/8 rod is used.
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