safe 211 test 2 electrical/fall protection
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epui789 Plus on September 29, 2011
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safe 211 test 2 electrical/fall protection
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safe 211 test 2 electrical/fall protection
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103 terms
Terms | Definitions |
|---|---|
 OSHA 29 CFR 1910.147 | rules regarding lock out tag out |
| 60% of death due to lock out tag out ... | no lock out tag out was attempted |
| the company has responsbility to | train provide equipment procedure |
| ECP | energy control procedure |
| de-energize | free from any source of energy which could cause the movement of equipment. Also free from any eletrical connection to a voltage source or static charge which could cause movement through being turned on or off |
| energized | connected to energy source which could cause equipment or material movement |
| stored energy | any form of energy which is contained in a unit and can result in the unexpected and uncontrolled movement of the item |
| energy control procedure | a procedure that is developed documented and utilized for each unique service/ maintainence job to insure the control of potentially hazardous energy |
| energy isolating device | a mechanical device that prevents the release of energy. ex circut breaker, disconnect switch, line blind chains etc |
| energy source | any eletrical, mechanical, hydraulic, pneumatic, chemical, thermal, gravity or other source that can cause movement of a piece of equipment |
| 1910.147a2ii | lockout tagout production exemption |
| levels of training for lock out and tag out | authorized affected awareness |
| authorized levels of training (lock out tagout) definition | worker chosen to lock and work on equipment |
| Affected levels of training (lock out tagout) definition | job requires them to use equipment that is being worked on |
| awareness levels of training (lock out tagout) definition | all ohter employees near the area |
| multi energy source must have what | written procedure |
| SES | single energy source |
| purposes of an outlet tester | test GFCI confirms power confirms proper wiring |
| most dangerous type of wiring | hot ground reverse |
| energy source ... | pneumatic chemical hydrualic electrical etc |
| energized | connected to energy source |
| residual energy | any type of energy stored in the device |
| sections of an energy control program | written energy procedures employee training periodic inspections |
| sections of an energy control procedure | state intended use list specific steps specific steps on placement / removal / transfer specific steps for verification |
| lockout sequence | prep for shutdown macine or equipment shutdown machine isolation device ( ball vavle cover) apply lockout device stored energy verification of isolation |
| lockout materials must be | durable substantial standardized identifiable |
| outside contractors must do what regarding a lock out tag out program | has to follow host employer program |
| tag only systems requirements | if a device is not capable of being locked out employer shows full employee protection |
| highest fatality rate of electrical fatalities | overhead line work |
| conductor (defintion) | a material that has free electrons. Electric current can readily move from one atom to another. |
| Insulator (defintion) | a material that does not have free electrons. Electric current that does not have free electrons. Non-Metalic material |
| electric current (defintion) | the flow of electrons through a conductor |
| what determines severity of a shock | amount of current during the amount of time in contact with the electricty |
| the service panel is not designed for what | to save worker lives |
| 80% of electrical injuries occur from what | arch flash and ignition of flammable clothing |
| arch tempratures can reach what | 35000F |
| voltage (E volts) | pushes current through the system |
| current (I amps) | the work of the system |
| Resistance (R ohms) | the opposition to current flow within the system |
| power (W watts) | Amount of energy delivered |
| OHM'S law | E = I x R |
| Power formula | W = E x I |
| 1 Milliamp | faint tingle |
| 10 Milliamps | Cant let go painful shock |
| 100 Milliamps | Almost certian death |
| 36% of electrical shock injuries result in what | falls from ladders |
| 50% of overhead powerlines hazards result in what | direct worker contact |
| 80% lineman fatailties result in what | lineman holding with bare hands |
| number one way to prevent fatalities by overhead lines | maintain safe working distances |
| minimum distance approach distance for overhead lines | 10ft |
| 10 ft minimum working distance for what voltage | 50k |
| GFCI does not need to work to have.... work | ground prong |
| 70E is based on the following protective stratgies | creating an electrically safe work condition training workers planning the task selecting and using PPE |
| A .... must be in tact for a GFCI to test properely | ground wire |
| shock hazard analysis (definition) | shall determine the voltage to which personnel will be exposed, boundary requirements, and the personal protective equipment necessary in order to minimized the possibility of electric shock to personal |
| limited approach (defintion) | qualified person shall advise the non qualified person of the electtrical hazard and warn him/her to stay out |
| electric shock vs arch flash (electric shock) | the human body becomes part of the electric circuit which may or may not cause injury or death |
| electric shock vs arch flash (arch flash) | an explosive release of energy caused by an electric arc the human body does not have to be part of the circuit to be injured or killed |
| guard live parts of electric equipment operating at .... volts or more against accidental contact | 50 volts |
| the PPE required for working on or near live electrical components depends on what factors | voltage current distance exposure time - most important |
| transient energy (defintion) | is a short lived burst of energy in an eletrical system caused by a sudden change. May be internal or external event |
| overvoltage (defintion) | when the voltage in a circuit or part of a circuit is rasied above its upper designed limit |
| 40 cal is resistant to how many volts | 600v |
| way most workers died of eletrcial shock over ten years ago | bare hands to wire |
| enegized electrical work permit is required to be completed by who | supervisor and employee signature |
| OHSA's focus four in construction | electrical falls struck by caught between |
| eletrical hazards | inadequate wiring wires with bad insulation ungrounded electrical systems and tools overloaded circuits damaged power tools and equipment using the wrong PPE and tools overhead powerlines all hazards are made worse in wet conditions |
| electrical protective measures | guard live parts proper use of flexible cords use fuses and circuit breakers proper grounding use GFCI's lockout/tagout closed electric panels training |
| residental construction effective date | 2010 2011 |
| when subpart M apply | leading edges open holes floor and wall openings water ramps hoist areas roofs and riggs confined spaces formwork / rebar |
| what is the new defintion of residential construction | wood frame residental use |
| fall protection | harness and lanyard anchor point retractable safety net position device |
| fall prevention | controlled access zone guardrail hole covers fall restraint warning line safety monitor |
| details of a guardrail | 42 inches 200lbs force toe board |
| horizontal lifeline must hold | 500lbs |
| an anchor point must hold | 5000lbs |
| A ground fault is: | energized frames resulting from electrical conductivity between energized conductors and equipment frames |
| 4. A ground fault circuit interrupter protects against the following | whose body is also in contact with the ground |
| The neutral wire carries current under normal conditions true or false | true |
| The ground wire carries current under normal conditions true or false | false |
| A ground fault can be detected by | measuring the voltage between the equipment frame and the ground bus at the service entrance |
| A break in the ground wire | results in ground fault protection becoming nonfunctional |
| A ground-fault circuit interrupter (GFCI) is a device which opens the circuit when | a person's body conducts current between the hot wire in the circuit and ground |
| Before attempting to extinguish an electrical fire, it is best to | Cut the power |
| Electric arc welding in the rain is okay if | Never, unless you have a death wish |
| Which two parameters are most important for fuses? | ampere and current-interruption rating |
| GFCI stands for | Ground Fault Circuit Interrupter |
| Which of the following must be notified prior to equipment shutdown for repair? | affected employees |
| What must be done before restoring energy to equipment after removing a lockout/tagout | The Authorized Employee will make a visual inspection of the work area to ensure that all nonessential items have been removed, all components are operationally intact, and all affected personnel are informed |
| What is the only purpose of a Lockout/Tagout? | To protect employees from hazardous energy including electrical, mechanical, hydraulic, pneumatic, chemical, thermal, or any other types of energy |
| Who is an Authorized Employee | An employee, who has been trained, examined and is knowledgeable of the company's lockout/tagout procedure and hazardous energy control and has been designated as such |
| Who can remove a Lockout/Tagout | Only the employee who hung it and his or her Supervisor if the employee can not be contacted |
| Lockout/tagout is a safety procedure mandated by | OSHA |
| The first step in lockout/tag out is to | Turn off the equipment and disconnect the energy source |
| Falls are dangerous because of three primary elements | Free-fall distance the worker falls Shock absorption at impact Weight of the worker |
| things needed for preventing a fall in a hole | cover secured (500lb) marked |
| lanyards can not be wrapped around and tied back into themselves or put in knots unless | backbiter style is approved |
| harness need to be inspected every | 10 yrs |
| lanyards need to be inspected every | 5 yrs |
| vertical distance from working level horizontal plane of net when placed at 5 ft (net overhang) | minimum required horizontal distance of outer edge of net from the edge of the working surface 8 ft |
| vertical distance from working level horizontal plane of net when placed at 5 - 10 ft (net overhang) | minimum required horizontal distance of outer edge of net from the edge of the working surface 10 ft |
| vertical distance from working level horizontal plane of net when placed at above 10 ft (net overhang) | minimum required horizontal distance of outer edge of net from the edge of the working surface 13 ft |
| characteristics of a controlled access zone | contorl lines 6 to 25 ft from the edge 6 to 60 ft for pre cast concrete 200lbs minimum breaking strength flagged every six feet workers in CAZ must be trained to recognize hazards a safety monitor most also be used |
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