Chapter 1: Safety

Question 1

Requires employers to provide their employees with working conditions that are free of known dangers

Answer 1

Occupational safety and health act

Question 2

Safety standard of practice for tree care

Answer 2

Anzi z133

Question 3

KE=(weight/×2) x speed

Answer 3

Kinetic energy equation

Question 4

Self checking STAR

Answer 4

Stop
Think
Act
Review

Question 5

Principles of accident prevention. Close calls at the bottom to a fatality at the top

Answer 5

Accident pyramid

Question 6

Unsafe acts and close calls at the bottom of the pyramid

Answer 6

Leading indicators

Question 7

Serious injury and fatality

Answer 7

Lagging indicators

Question 8

Theory that workplace injuries to be caused by a number of contributing factors and causes which randomly interact.

Answer 8

Multiple causation theory

Question 9

System approach to safety. Recognize human error and errors have to be considered in the context of the system that it occurred

Answer 9

High reliability organization

Question 10

Voltage difference when a person near a ground fault with 2 body parts straddles that voltage differential.

Answer 10

Step potential

Question 11

Voltage differential btw 2 objects someone simultaneously contacts.

Answer 11

Touch potential

Question 12

Electrical flow in an unintended direction through a transformer

Answer 12

Back feed

Question 13

____ ____organization is a group that takes a
systematic approach to safety, recognizing that humans are imperfect & that errors have to be considered in the context of the system in which they occurred.

Answer 13

High reliability

Question 14

Advantages of providing temporary accommodations for a
large-scale disaster response:

Answer 14

Oversight
Economies of scale
Communication

Question 15

An excellent example of electrical safety standards is:

Answer 15

Ansi Z133 American National Standard for Arboricultural
Operations - Safety Requirements

Question 16

British Standards Institute Recommendations for Tree Work

Answer 16

BS3998

Question 17

Two types of failure modes

Answer 17

mechanical & electrical

Question 18

Used to formally review site conditions and job procedures and determine whether it can be done safely

Answer 18

Job briefing

Question 19

Surface temp at the point of contact with high voltage can reach

Answer 19

1000 c 1832 f

Question 20

Contract arrangement in which the contractor is responsible for all financing, and owns the work until the project is complete and turned into the owner

Answer 20

Turn key contract

Question 21

Rule suggest that workers should take time before starting a job to check for potentially unsafe conditions and confer about them

Answer 21

2 minute rule

Question 22

Unsafe acts include

Unsafe condition include

Answer 22

Human error, willful rule violation, maliciousness

Equipment failure