Hazardous Energy Sources
37 flashcards covering Hazardous Energy Sources for the OSHA OSHA 10/30 General Industry section.
Hazardous energy sources refer to the various forms of energy that can cause harm if not properly controlled during maintenance and servicing activities. The Occupational Safety and Health Administration (OSHA) defines these sources and outlines the necessary precautions in its standards, particularly in 29 CFR 1910.147, which addresses the control of hazardous energy during servicing and maintenance. This regulation emphasizes the importance of lockout/tagout procedures to ensure worker safety.
In practice exams and competency assessments for the OSHA 10/30 General Industry certification, questions on hazardous energy sources often focus on identifying different types of energy (such as electrical, mechanical, hydraulic, and pneumatic) and the appropriate safety measures. A common trap is the failure to recognize that energy sources can be both stored and released, leading to misconceptions about when lockout/tagout procedures are necessary. One key point that workers frequently overlook is the importance of documenting energy control procedures, which can be crucial during inspections or audits.
Terms (37)
- 01
What is the purpose of the Lockout/Tagout (LOTO) standard?
The purpose of the Lockout/Tagout (LOTO) standard is to prevent the unexpected energization or startup of machines and equipment during maintenance or servicing, ensuring worker safety (29 CFR 1910.147(a)).
- 02
When must energy control procedures be developed?
Energy control procedures must be developed when employees are required to lock out or tag out equipment to perform servicing or maintenance (29 CFR 1910.147(c)(4)(i)).
- 03
How often must energy control procedures be inspected?
Energy control procedures must be inspected at least annually to ensure they are being followed and are effective (29 CFR 1910.147(c)(6)(i)).
- 04
What must be done before servicing equipment?
Before servicing equipment, the worker must ensure that the equipment is properly locked out or tagged out to prevent accidental energization (29 CFR 1910.147(d)(1)).
- 05
What are the requirements for tags used in LOTO?
Tags must be securely attached, warn against hazardous conditions, and indicate the identity of the employee who applied the tag (29 CFR 1910.147(c)(5)(ii)).
- 06
Under LOTO, what is required when a worker is exposed to hazardous energy?
The worker shall follow established lockout/tagout procedures to control hazardous energy before performing any maintenance or servicing (29 CFR 1910.147(d)(1)).
- 07
What is considered a hazardous energy source?
Hazardous energy sources include electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and other sources that could cause injury (29 CFR 1910.147(a)).
- 08
What is the first step in the lockout/tagout process?
The first step in the lockout/tagout process is to notify all affected employees that a lockout or tagout procedure is going to be utilized (29 CFR 1910.147(d)(3)).
- 09
How should stored energy be managed during servicing?
Stored energy must be relieved, disconnected, or restrained to prevent the unexpected release of energy during servicing (29 CFR 1910.147(d)(4)).
- 10
What is the minimum training requirement for employees regarding LOTO?
Employees must be trained to understand the purpose and function of the energy control program and the specific procedures they are required to follow (29 CFR 1910.147(c)(7)(i)).
- 11
What is the role of a qualified person in LOTO?
A qualified person is someone who has received training in the recognition of hazardous energy sources and the proper procedures for controlling them (29 CFR 1910.147(b)).
- 12
What must be done if a lockout device is removed?
If a lockout device is removed, the authorized employee must ensure that the equipment is safe to operate before removing the lockout device (29 CFR 1910.147(d)(5)(i)).
- 13
What is the maximum number of locks that can be placed on a lockout device?
There is no specific maximum number of locks; however, each authorized employee must have their own lock on the device (29 CFR 1910.147(d)(4)(iii)).
- 14
What should be done if a tagout device is removed without authorization?
If a tagout device is removed without authorization, the equipment must not be operated until the authorized employee who applied the tag is notified (29 CFR 1910.147(d)(5)(ii)).
- 15
What is the definition of 'energized' in the context of hazardous energy?
'Energized' refers to equipment or circuits that are connected to an energy source or contain residual or stored energy (29 CFR 1910.147(b)).
- 16
What is required for multi-employer worksites regarding LOTO?
Multi-employer worksites must have a coordination of lockout/tagout procedures among different employers to ensure safety (29 CFR 1910.147(f)).
- 17
What is the significance of the term 'affected employee'?
An affected employee is one who operates or uses the equipment that is being serviced or maintained (29 CFR 1910.147(b)).
- 18
What should be done if equipment cannot be locked out?
If equipment cannot be locked out, alternative measures such as using a tagout system with additional safety measures must be implemented (29 CFR 1910.147(c)(2)).
- 19
What is the purpose of a lockout device?
A lockout device is used to hold an energy-isolating device in a safe position to prevent the accidental energization of machinery (29 CFR 1910.147(b)).
- 20
What is the requirement for training employees on hazardous energy control?
Employees must be trained to recognize hazardous energy sources and the proper methods to control them (29 CFR 1910.147(c)(7)).
- 21
How should hazardous energy sources be identified?
Hazardous energy sources must be clearly identified and labeled to inform employees of potential risks (29 CFR 1910.147(c)(1)).
- 22
What is the role of the authorized employee in LOTO?
The authorized employee is responsible for implementing the lockout/tagout procedures and ensuring that equipment is properly locked out (29 CFR 1910.147(b)).
- 23
What is required for a tagout system to be effective?
A tagout system must be supplemented by additional safety measures to ensure that the equipment cannot be operated while tagged out (29 CFR 1910.147(c)(2)).
- 24
What must be done if a lockout procedure fails?
If a lockout procedure fails, the equipment must not be operated until the failure is corrected and the lockout is re-established (29 CFR 1910.147(d)(5)(iii)).
- 25
What is the definition of 'control of hazardous energy'?
Control of hazardous energy refers to the practices and procedures used to prevent the accidental release of hazardous energy during maintenance and servicing (29 CFR 1910.147(a)).
- 26
What is required when servicing equipment that has multiple energy sources?
When servicing equipment with multiple energy sources, each source must be locked out or tagged out to ensure safety (29 CFR 1910.147(d)(4)).
- 27
What is the importance of periodic inspections of LOTO procedures?
Periodic inspections ensure that the LOTO procedures are being followed and remain effective in controlling hazardous energy (29 CFR 1910.147(c)(6)).
- 28
What is the requirement for notifying affected employees about LOTO?
Affected employees must be notified before the application of lockout or tagout devices and after the completion of the servicing (29 CFR 1910.147(d)(3)).
- 29
What is the definition of 'energy-isolating device'?
An energy-isolating device is a mechanical device that physically prevents the transmission or release of energy (29 CFR 1910.147(b)).
- 30
What must be done if a worker is exposed to hazardous energy during maintenance?
The worker must follow the established lockout/tagout procedures to control hazardous energy before beginning maintenance (29 CFR 1910.147(d)(1)).
- 31
What is required for a lockout/tagout program to be effective?
A lockout/tagout program must include written procedures, employee training, and periodic inspections to ensure compliance (29 CFR 1910.147(c)).
- 32
What is the role of the employer in LOTO procedures?
The employer is responsible for establishing and enforcing a lockout/tagout program that complies with OSHA standards (29 CFR 1910.147(a)).
- 33
What is the definition of 'residual energy'?
Residual energy is any energy that remains in a system after the primary energy source has been isolated (29 CFR 1910.147(b)).
- 34
What must be done to ensure safety when using tagout devices?
Tagout devices must be used in conjunction with additional safety measures to prevent accidental energization (29 CFR 1910.147(c)(2)).
- 35
What is the significance of the term 'lockout'?
'Lockout' refers to the placement of a lock on an energy-isolating device to prevent the transmission of energy (29 CFR 1910.147(b)).
- 36
What is required for a lockout device to be effective?
A lockout device must be durable, standardized, and identifiable to ensure it cannot be easily removed (29 CFR 1910.147(c)(5)).
- 37
How often must LOTO training be refreshed?
LOTO training must be refreshed whenever there is a change in job assignments, equipment, or procedures (29 CFR 1910.147(c)(7)(ii)).