OSHA general industry electric power generation, transmission and distribution practice questions

1. Under 1910.269(a)(1)(ii)(A), section 1910.269 does not apply to construction work as defined in 1910.12, with which exception?

• A. Any work done by an electric utility's own employees
• B. Any work done on lines energized at more than 600 volts
• C. Line-clearance tree trimming and work involving electric power generation installations as specified in 1926.950(a)(3)
• D. Any work that lasts longer than 30 days

2. A factory has supplementary electric generating equipment used to supply the workplace for emergency or standby purposes only. Under the note to 1910.269(a)(1)(i)(A), which part of the rules covers that equipment?

• A. Subpart S of Part 1910
• B. Paragraph (v) of 1910.269, on power generation
• C. Paragraph (u) of 1910.269, on substations
• D. No OSHA rule covers it

3. Under 1910.269(a)(2)(i)(C), what determines the degree of training an employee must receive?

• A. The employee's years of service with the employer
• B. The number of employees on the crew
• C. The size of the employer's service territory
• D. The risk to the employee for the hazard involved

4. An employee will perform a task that is done less often than once per year. How does the note to 1910.269(a)(2)(v)(C) say OSHA considers such tasks?

• A. As exempt from the training requirements of the section
• B. As necessitating retraining before the performance of the work practices involved
• C. As tasks only a contract employer may perform
• D. As requiring a written test after the work is finished

5. During its work, a contract employer finds an unanticipated hazardous condition that the host employer did not mention. What deadline does 1910.269(a)(3)(ii)(C) set for telling the host employer?

• A. Within 10 working days after discovering the condition
• B. Within 2 working days after discovering the hazardous condition
• C. By the end of the contract
• D. At the next annual inspection

6. Employees work on exposed lines energized at 50 volts or more at a remote substation, and there are too few employees for a trained person to reach each exposed employee within the time the rule sets. What does 1910.269(b)(1)(ii) require?

• A. One trained person must be on call by telephone
• B. The work must be postponed until a trained person arrives
• C. A first-aid kit must be placed at each piece of equipment instead
• D. Each employee at the work location shall be a trained employee

7. In assigning an employee or a group of employees to perform a job, what does 1910.269(c)(1)(i) require the employer to provide to the employee in charge of the job?

• A. All available information that relates to the determination of existing characteristics and conditions required by paragraph (a)(4)
• B. A copy of each crew member's medical records
• C. A written briefing approved in advance by OSHA
• D. Only the street address of the job site

8. Before any entrance cover to an enclosed space is removed, how does 1910.269(e)(4) require the employer to determine whether it is safe to do so?

• A. By asking the last crew that worked in the space
• B. By waiting 24 hours after the space was last entered
• C. By checking for the presence of any atmospheric pressure or temperature differences and evaluating whether there might be a hazardous atmosphere in the space
• D. By removing the cover quickly and testing the air afterward

9. Continuous forced-air ventilation is used for an enclosed space. Under 1910.269(e)(12), how long must the ventilation continue?

• A. Until all employees leave the enclosed space
• B. Until the first test after entry shows a safe atmosphere
• C. For the first 15 minutes after entry
• D. Until the attendant leaves for other duties

10. Employees work on cable in a manhole. Under 1910.269(t)(8), what must the employer do about the cable's metallic sheath?

• A. Remove the sheath before work begins
• B. Paint the sheath to mark the cable being worked
• C. Nothing, because the rule covers buried cable only
• D. Maintain metallic-sheath continuity, or treat the cable sheath as energized

11. Under 1910.269(h)(3), when shall conductive ladders be used in specialized high-voltage work?

• A. Whenever a nonconductive ladder is not on the truck
• B. When the employer demonstrates that nonconductive ladders would present a greater hazard to employees than conductive ladders
• C. Whenever the work is done at night
• D. Whenever the ladder is shorter than the structure being climbed

12. A portable generator supplies cord- and plug-connected equipment covered by 1910.269(i)(2). Under 1910.269(i)(3)(i), how may the generator supply that equipment?

• A. Through a receptacle on a nearby building's wiring
• B. Through a receptacle box set on the ground away from the generator
• C. Only through receptacles mounted on the generator or the vehicle
• D. Through any receptacle, if the cord is shorter than 50 feet

13. An outrigger on mobile equipment is outside the clear view of the operator. Under 1910.269(p)(2)(ii), when may it be extended or retracted?

• A. Whenever the horn is sounded first
• B. Whenever the outrigger pads are already in place
• C. Whenever the boom is stowed
• D. Only when all employees are outside the range of possible equipment motion

14. Employees will install new lines parallel to existing energized lines. Under 1910.269(q)(2)(iv), what must happen before they do?

• A. The employer shall make a determination of the approximate voltage to be induced in the new lines, or work shall proceed on the assumption that the induced voltage is hazardous
• B. The existing lines shall always be removed first
• C. The new lines shall be installed only at night
• D. The employer shall notify OSHA of the work

15. During installation of overhead lines, between whom does 1910.269(q)(2)(ix) require reliable communications?

• A. The pulling-rig operator and the utility's system operator only
• B. The reel tender and the host employer's safety office
• C. The reel tender and the pulling-rig operator
• D. The crew and the local fire department

16. Before a line-clearance tree trimmer who is not a qualified employee climbs a tree, 1910.269(r)(1)(i) requires a determination of the nominal voltage of electric power lines posing a hazard. What alternative does the rule allow?

• A. Skipping the determination if the trimmer uses only hand tools
• B. Determining the maximum nominal voltage to which the employee will be exposed, if all lines are considered as energized at this maximum voltage
• C. Treating all lines as deenergized until a test shows otherwise
• D. Making the determination after the trimmer has finished climbing

17. A climbing rope has become wet during line-clearance tree trimming. What does 1910.269(r)(7)(vii) say about using it near exposed energized lines?

• A. It may be used if the trimmer wears rubber insulating gloves
• B. It may be used near lines energized at 750 volts or less
• C. It may be used once it has been inspected
• D. It may not be used near exposed energized lines

18. An employee who does not regularly work in an attended substation enters it. What does 1910.269(u)(6)(i) require of that employee?

• A. To sign a visitor log kept at the gate
• B. To lock the entrance behind him or her
• C. To report his or her presence to the employee in charge of substation activities to receive information on special system conditions affecting employee safety
• D. To stay outside the fence until the substation is deenergized

19. Exciter or generator brushes are to be changed while the generator is in service, and the check shows a ground condition exists. What does 1910.269(v)(2) say?

• A. The brushes may not be changed while the generator is energized
• B. The brushes may be changed if the employee wears gloves
• C. The brushes may be changed if the work takes less than 10 minutes
• D. The brushes may be changed if a second employee watches

20. Employees will work on an instrument in a current transformer secondary circuit, and the employer cannot deenergize the primary of the current transformer. What does 1910.269(w)(2) require?

• A. The secondary shall be opened before work begins
• B. The employer shall bridge the circuit so that the current transformer secondary does not experience an open-circuit condition
• C. The work may go ahead with no further step
• D. The instrument shall be removed while the secondary is open