Es-Tee-Nineteen Flashcards
ST19 requires that all circuits or parts operating at ________ volts or should normally be de-energized before anyone works on or near them
50
Test meters are required to be rated for the circuits and equipment to which they will be connected
True
The rating for a hazard risk category 2 is ______ .
8cal/cm 2
The 3 hazards of electricity are
Shock, arc, and blast
The appropriate class of glove that should be worn while working on energized circuits of 480 volts is _______
Class 00
Only _______ may use testing equipment on energized circuits.
Qualified workers
All electrical circuits must be tested “de-enegized” before being considered safe to touch
True
Within the Department of Water Resources, which office is responsible for generating and issuing electrical warning labels?
Electrical Engineering Services
A current flow as low as _______ through a person’s heart will cause heart fibrillation
100mA
An electric arc can reach temps four times as high as that of the sun.
True
NFPA 70-E is updated periodically and is considered the “industry Standard” for safety in the workplace.
True
______ are responsible for providing PPE with an ATPV rating sufficient for the work being performed
Superintendent/ Branch Chiefs
The abbreviation FR when referring to protective clothing stands for
Flame Resistant
An example of work that may be performed on energized circuits because of infeasability would be testing or troubleshooting
True
Which protection boundary can be crossed by an unqualified worker while being escorted by a qualified worker?
Limited approach
Employees should remove all jewelry such as rings, watches, necklaces, etc., before performing energized work.
True
Before rubber protective equipment can be worn, it must be ______
Inspected
Once placed into service, rubber gloves must be cleaned, inspected every _______ months.
6months
When should Job Hazard Analysis should be performed?
Before the start of each job
It is permissible for an unqualified person to cross the Restricted Approach Boundary
False
A(n) ______ area is a clearly marked area where personnel are not required to wear Flame Resistant clothing
Exclusion
Where insulated rubber gloves are used for shock protection, ________ shall be worn over the rubber gloves.
Leather Protector Gloves
Face shields that are not arc related may be used for arc flash protection if they are tinted.
False
What is the purpose of Project O&M instruction ST-19
To enhance safe working conditions established by OP2 and other safety documents and to provide criteria for assessing and mitigating the risk of shock and arc flash hazards during equipment use that may result in personal injury
The Limited Approach Boundaries for a live 480volt fixed circuit is 10’.
False (3’6”)
NFPA 70E requires a job briefing to be conducted
Before the start of each day