5/1 NFPA70E Final Exam
Questions And Answers
NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters; 17
informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction. Chapter 1
is divided into ? articles. - ANSWER- 3/5
The appointment of the NFPA 70E ...
5/1 NFPA70E Final Exam
Questions And Answers
NFPA 70E, Standard for Electrical Safety in the Workplace, consists of ? chapters; 17
informative annexes; the Foreword to NFPA 70E; and Article 90, Introduction. Chapter 1
is divided into ? articles. - ANSWER- 3/5
The appointment of the NFPA 70E Committee was announced on January 7, ? , and
was formed to assist ? in preparing electrical safety standards that would serve its
requirements. - ANSWER- 1976/OSHA
The 1995 edition of NFPA 70E included the concepts of ? and the establishment of an
arc. The 2000 edition continued to focus on establishment of flash protection
boundaries, the use of personal protective equipment, and ? to assist the user in
applying appropriate protective clothing and personal protective equipment for common
tasks. - ANSWER- Limits of Approach/Charts
The 2004 edition of NFPA 70E introduced the requirements of ? . The 2018 edition ? all
previous editions. - ANSWER- The energized electrical work permit / supersedes
NFPA 70E Chapter 1 applies generally to electrical safety in the workplace. Chapter 2
addresses safety-related ? requirements. Chapter 3 ? Chapter 1 with safety
requirements for special equipment. - ANSWER- maintenance / supplements or
modifies
Explanatory material is included in the form of informational notes, which are not
enforceable as requirements. Brackets containing section references to another NFPA
document are for informational purposes only and are provided as a guide to indicate
the source of the extracted text. - ANSWER- True
An arc flash hazard is defined in Article 100 as a source of possible injury or damage to
health associated with the release of energy caused by an electric arc. Informational
Note No. 1 indicates that the likelihood of occurrence of an arc flash incident increases
when energized electrical conductors or circuit parts are exposed or when they are
within equipment in a(n) ? condition, provided a person is interacting with the equipment
in such a manner that could cause an electric arc. An arc fla - ANSWER- guarded or
enclosed / maintained
Arc rating is defined in Article 100, in part, as the value attributed to materials that
describes their performance with exposure to an electrical arc discharge and is
expressed ? . Informational Note No. 1 states, in part, that arc-rated clothing or
equipment has been tested for exposure to an electric arc and that flame-resistant (FR)
clothing without an arc rating ? been tested for exposure to an electric arc - ANSWER-
in cal/cm2 / has not
,ATPV is defined in ASTM F1959/F1959M as the incident energy (cal/cm2) on a material
or a multilayer system of materials that results in a ? probability that sufficient heat
transfer through the tested specimen is predicted to cause the onset of a second degree
skin burn injury based on the Stoll curve. EBT is defined in ASTM F 1959-06 as the
incident energy (cal/cm2) on a material or a material system that results in a ?
probability of break open. - ANSWER- 50% / 50%
The Informational Note to the definition of arc flash boundary states that, according to
the Stoll skin burn injury model, the onset of a second degree burn on unprotected skin
is likely to occur at an exposure of ? for one second. - ANSWER- 1.2 cal/cm2
An approach limit at a distance from an exposed energized electrical conductor or
circuit part within which a shock hazard exists - ANSWER- Limited Approach Boundary
An approach limit at a distance from an exposed energized electrical conductor or
circuit part within which there is an increased likelihood of electric shock, due to
electrical arc-over combined with inadvertent movement - ANSWER- Restricted
Approach Boundary
When an arc flash hazard exists, an approach limit from an arc source at which incident
energy equals 1.2 cal/cm2 (5 J/cm2) - ANSWER- Arc-Flash Boundary
An electrical hazard is defined as a dangerous condition such that contact or ? can
result in electric shock, arc flash burn, thermal burn, or ? . - ANSWER- equipment
failure / arc blast injury
Incident energy is defined as the amount of thermal energy impressed on a surface, a
certain distance from the source, generated during an electrical arc event. Incident
energy is typically expressed in ? - ANSWER- calories per centimeter squared (cal/cm2)
A qualified person is defined as one who has demonstrated skills and knowledge
related to the construction and ? of electrical equipment and installations, and has
received safety training to ? the hazards and reduce the associated risk. - ANSWER-
operation / identify
An unqualified person is defined as a person who is not a qualified person - ANSWER-
True
The requirements that address host and contract employer's responsibilities require a
number of things. Which of the following are among those requirements? - ANSWER- 1.
The contract employer must ensure that each employee follows the work practices
required by NFPA 70E in addition to any safety-related work rules of the host employer.
IV. The host employer must inform the contract employer with the information about the
employer's installation that the contract employer needs to make the assessments
required by Chapter 1 of NFPA 70E
, V. There must be a documented meeting between the host employer and the contract
employer where the host employer has knowledge of hazards covered by NFPA 70E
that are related to the contract employer's work.
The electrical safety training requirements in 110.2(A) state that employees are required
to be trained in a number of topics. Which of the following are among those employee
training topics? - ANSWER- I. In safety-related work practices and procedural
requirements, as necessary, to provide protection from the electrical hazards associated
with their respective job or task assignments
III. To identify and understand the relationship between electrical hazards and possible
injury
IV. To understand the specific hazards associated with electrical energy
Determine which of the following are required to meet the NFPA 70E requirements
related to emergency response training. - ANSWER- II. Employees exposed to shock
hazards and those responsible for the safe release of victims from contact with exposed
energized electrical conductors or circuit parts shall be trained in methods of safe
release.
III. Employees responsible for responding to medical emergencies shall be trained in
first aid and emergency procedures.
IV. Employers shall verify at least annually that employee emergency response training
is current.
V. The employer shall document that emergency response training has occurred.
The employer must document that each employee has received the training required by
110.2(A). This documentation of training must satisfy which of the following criteria? -
ANSWER- I. It must be made when the employee demonstrates proficiency in the work
practices involved.
II. It must be maintained for the duration of the employee's employment.
III. It must contain the content of the training, each employee's name, and dates of
training
Identify which of the following statement(s) is/are true as they relate to unqualified
persons. - ANSWER- I. An unqualified person is defined as a person who is not a
qualified person.
III. Unqualified persons must be familiar with any electrical safety-related practices
necessary for their safety.
IV. Unqualified persons must be trained in any electrical safety-related practices
necessary for their safety.
Determine which of the following among the NFPA 70E requirements relate to qualified
person training, both generally and when such persons are permitted to work within the
limited approach boundary. - ANSWER- I. The employee must be familiar with the
proper use of the special precautionary techniques, applicable electrical policies and
procedures, PPE, insulating and shielding materials, and insulated tools and test
equipment.
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