Confined space 16 Flashcards
OSHA Standard for Permit-Required Confined Spaces
1910.146
OSHA Telecommunications Standard- Underground Lines
1910.268 Section (O)
OSHA Standard to allow technicians to enter a jointly occupied manhole while working alone
1910.268 Section O(3)
Attendant must be currently certified in
CPR and First Aid
Acceptable oxygen levels are from
19.5% to 22.5%
(LEL/LFL)
Lower Explosive Limit, Lower flammable limit
Hydrogen Sulfide must be lower than _____ PPM and Carbon Monoxide must be lower than ____PPM.
10 and 33
Ladders shall be used to enter and exit manholes exceeding 4 feet in depth.
OSHA 1910.268 (O)(4)
A mechanical rescue device must be available to rescue personnel in vertical type spaces more than
5 ft deep
All rescue personnel must practice making permit space rescues at least once every
12 months
Carbon monoxide may be fatal at ____ parts-per-million (ppm) in air, and is considered dangerous at ____ ppm
1000 and 200
There are three technician roles associated with confined space operations:
Entrant, Attendant, and Supervisor
The surrounding and effective capture of a person by a liquid or substance, possibly causing death by filling or plugging of the respiratory system or creating enough force on the body to cause death by strangulation, constriction or crushing
Engulfing
A condition resulting in death or unconsciousness caused by inadequate oxygen, presence of noxious agents, or other obstruction to normal breathing
Asphyxiation
The Comcast maximum oxygen level is ______%.
22.5%
How long are entry permits required to be kept on file?
at least one year
The standby attendant will continue to monitor atmosphere levels and record every ______ minutes.
20
Prevent any objects or personnel from falling into a manhole.
Manhole Shield
Effects similar to frost bite due to prolonged exposure to water and cold on the skin combined with a lack of blood flow due to the cold
Trench Foot
OSHA standard for ladders to be used to enter and exit manholes exceeding 4 feet in depth.
(OSHA 1910.268 (o)(4)
A mechanical rescue device must be available to rescue personnel in vertical type spaces more than___
5ft deep
All rescue personnel must practice making permit space rescues at least
Once every 12 months
NIOSH
National Institute for Occupational Safety and Health
% of fatalities were would be rescuers
67%
% of fatalities were supervisor or above
35%
OSHA
Occupational Safety and Health Administration
Confined Space Qualification is made up of what 2 parts?
Written Exam and Field demonstration
When is confined space recertification required?
Every 3 years, after a safety violation, or as required by your system or division.
The entrant and attendant must have current…
CPR and first aid certifications
A confined space is one that…
1) Is large enough and so configured that an employee can bodily enter and perform assigned work.
2) Has limited or restricted means for entry or exit.
3) Is not designed for continuous employee occupancy
confined spaces are classified as follows
non-permit confined spaces,
permit required confined spaces
Permits and Specific training are required if the confined space:
1) Contains, or has the potential to contain, a hazardous atmosphere.
2) Contains a material that has the potential for engulfing the worker
3) has an internal configuration such that a worker could be trapped or asphyxiated by inwardly converging walls or by a floor that slopes downward and tapers to a smaller cross section.
4) Contains any other recognized serious safety or health hazards.
The 2 OSHA standards that you should be familiar with when working in confined spaces are:
- 146-Permit Required Confined Spaces
1910. 268-Telecommunications-Section (o)- Underground Lines
Requirements of OSHA standard 1910.146 include:
1) Identification of confined spaces.
2) Informing employees of the confined spaces existence.
3) Entry permits.
4) a written permit confined space program
5) Training for individuals with active roles in confined space work, including: authorized entrant,attendants, entry supervisor,Rescue and emergency services personnel
Permit required confined spaces for general industry became effective on …
April 15, 1993
OSHA Telecommunications Standard 1910.268 Section(o) gives specific direction in the following areas:
1) Guarding Manholes and street openings
2) Requirements prior to entering manholes and unvented vaults.
3) Joint power and Telecommunications Manholes.
As you read in the OSHA 146 Standard, Permit Controlled confined spaces, you will note that per part (g), this training is required for all employees work duties could involve working in confined spaces. Training is required in any of the following situations:
1) Before a technician is assigned to a confined space operation
2) whenever a change is made in the operation in which the employee has not been previously trained.
3) whenever there are deviations from the permit-required confined space procedure.
4) Before there is a change of duties
3 technician roles associated with confined spaces
1) Entrant
2) Attendant
3) Supervisor
Entrant general responsibilities include:
1) currently certified in CPR and First Aid
2) Understand the hazards you may face during entry of a permit space including how exposure occurs,as well as signs, symptoms, and consequences of exposure.
3) Properly use required equipment
4) Equipment is on site and properly inspected.
Entrant communication responsibilities include:
1) Stay in contact with the attendant so that they can monitor your status and alert you if you need to vacate the permit space.
2) Alert the attendant whenever you recognize a warning sign or symptom of exposure to a dangerous situation. And a prohibited condition.
Exit the permit space as quickly as possible whenever:
1) an order to evacuate is given by the attendant or the entry supervisor.
2) you recognize any warning sign or symptom of exposure to a dangerous situation.
3) You detect a prohibited situation.
4) An evacuation alarm is activated.
attendant general responsibilities include:
1) Be currently certified in CPR and First Aid
2) Understand the hazards that may be faced during entry of a permit space, including how exposure occurs and the signs, symptoms and consequences of exposure.
3) be aware of possible behavior effects of hazard exposure of authorized entrants.
4) Remain outside the permit space during entry operations until relieved by another attendant.
5) Perform no duties that might interfere with the attendant’s primary duty to monitor and protect authorized entrants.
attendant communication responsibilities include:
communicate with authorized entrants as necessary to monitor their status and alert them of the need to evacuate the permit space.
Access control means to:
1) continuously maintain an accurate count of authorized entrants in the permit space and ensure that the means used to identify authorized entrants accurately identifies who is in the permit space.
2) Take the following actions when unauthorized persons approach or enter a permit space while entry is underway.
a) warn the unauthorized person that they must stay away from the permit space.
b) advise the unauthorized persons that they must exit immediately if they have entered the work area surrounding the permit space.
c) inform the authorized entrants and the entry supervisor if unauthorized persons have entered the work area surrounding the permit space.
The attendant must the work zone access
control
The attendant orders evacuation immediately if:
1) detects a hazardous condition
2) detects a behavioral effect if hazard exposure in an authorized entrant.
3) detects a situation outside the space that could endanger the authorized entrants.
4) If the attendant cannot effectively and safely perform all the duties required of an attendant.
Who will summon rescue and other emergency personnel as soon as they determine that authorized entrants may need assistance to escape from permit space hazards?
The attendant
The attendant will perform non entry rescues as specified by….
your system’s rescue procedure.
