Download IBEW Orientation Ultimate Exam and more Exams Technology in PDF only on Docsity!
Question 21. Which OSHA standard specifically addresses the use of fall protection systems for roofing work? A) 1926.501(b)(10) B) 1926.502(b)(2) C) 1926.503(b)(3) D) 1926.504(b)(1) Answer: A Explanation: 29 CFR 1926.501(b)(10) requires fall protection for roof work when the walking/working surface is 6 ft or more above a lower level. Question 22. When selecting a personal fall arrest system, the maximum arresting force allowed by OSHA is: A) 1,800 lb B) 1,500 lb C) 2,000 lb D) 2,200 lb Answer: A Explanation: OSHA limits the deceleration force on a PFAS to 1,800 lb (8,000 N) to prevent severe injury. Question 23. The term “qualified person” in OSHA language means: A) Any employee who has completed safety orientation B) Someone with a recognized degree in engineering only C) An individual with a recognized expertise in a specific area, capable of solving or addressing hazards D) The foreman of the crew Answer: C
Explanation: A qualified person possesses a recognized degree, certificate, or extensive experience that enables him/her to solve or address a specific hazard. Question 24. Which of the following is NOT a required element of an OSHA Emergency Action Plan (EAP)? A) Procedures for reporting fires and other emergencies B) A list of all subcontractors on the job site C) Designated evacuation routes and exits D) Procedures for accounting for all employees after evacuation Answer: B Explanation: While subcontractor information may be useful, it is not a required component of an EAP. Question 25. The OSHA standard for respiratory protection (1926.103) requires fit testing of respirators at minimum intervals of: A) Every 12 months B) Every 6 months C) Every 30 days D) Every 24 months Answer: A Explanation: OSHA requires annual fit testing for respirators unless changes in the worker’s facial characteristics or equipment warrant more frequent testing. Question 26. Which type of hard hat provides protection against impact and penetration? A) Type I B) Type II C) Both Type I and Type II
Question 28. (Continuation) The correct answer is B – shoring involves hydraulic or mechanical supports to prevent trench wall collapse. Question 29. Which OSHA standard governs the use of scaffolding in construction? A) 1926. B) 1926. C) 1926. D) 1926. Answer: A Explanation: Subpart M, 29 CFR 1926.451, contains the requirements for scaffold erection, use, and dismantling. Question 30. The “Three-Rung” rule for ladder placement on a roof requires the bottom rung to be placed at least how many inches from the roof edge? A) 12 inches B) 18 inches C) 24 inches D) 30 inches Answer: C Explanation: OSHA requires the bottom rung of a ladder on a roof to be placed at least 24 inches from the roof edge to prevent the ladder from slipping. Question 31. When using a powered circular saw, the “guard” must be positioned so that it: A) Covers the blade only when the saw is turned off B) Remains in place only while the blade is rotating
C) Covers the blade at all times, regardless of operation D) Is removed for easier cutting of thick material Answer: C Explanation: OSHA requires that the guard cover the blade at all times to protect the operator from accidental contact. Question 32. A “critical lift” is defined as a lift that: A) Involves a load greater than 2,000 lb B) Requires a certified crane operator C) Involves a load that could cause death or serious injury if it fails D) Must be performed only during daylight hours Answer: C Explanation: OSHA defines a critical lift as one where failure could result in death or serious injury, regardless of weight. Question 33. Which of the following is the correct sequence for using a lockout/tagout device on a machine? A) Apply lock, then tag, then shut down the machine B) Shut down the machine, apply lock and tag, then verify isolation C) Tag the device, then lock, then shut down the machine D) Verify isolation, then lock, then tag, then restart the machine Answer: B Explanation: The proper LOTO sequence is: (1) shut down, (2) isolate energy, (3) apply lock and tag, (4) verify that the machine cannot start. Question 34. Which of the following is NOT a permissible method for controlling exposure to silica dust?
Question 37. For a permit-required confined space, the permissible oxygen concentration range is: A) 18%–22% B) 19.5%–23.5% C) 20%–25% D) 21%–24% Answer: B Explanation: OSHA requires oxygen levels between 19.5% and 23.5% for a safe atmosphere in a confined space. Question 38. Which of the following is NOT a required element of a confined-space entry permit? A) Identification of the space as permit-required B) List of all workers present on the site that day C) Atmospheric testing results D) Rescue and emergency procedures Answer: B Explanation: While a permit includes many details, a site-wide worker list is not a required element. Question 39. The “Water-Rest-Shade” (WRS) protocol for heat illness prevention is recommended after how many minutes of continuous work in hot conditions? A) 30 minutes B) 45 minutes C) 60 minutes D) 90 minutes Answer: C
Explanation: OSHA recommends a break for water, rest, and shade after each hour of continuous work in hot environments. Question 40. Which of the following best describes a “nip point” in machine guarding? A) A location where two moving parts intersect, creating a crushing hazard B) The point where a worker’s hand may slip onto a blade C) The spot where a guard is attached to a machine frame D) A location where a tool changes direction Answer: A Explanation: A nip point is where two moving parts come together, creating a risk of crushing or shearing. Question 41. The OSHA standard for ladder safety (1926.1053) requires a 4:1 ratio for extension ladders. This means: A) The ladder must be four times longer than the height it reaches B) The base of the ladder must be placed one foot away from the wall for every four feet of ladder height C) The ladder must be placed at a 4-degree angle from the vertical D) The ladder must be secured at four points along its length Answer: B Explanation: A 4:1 ratio means the base should be one foot out for every four feet of ladder length to maintain stability. Question 42. Which of the following is the correct order for donning a full-face respirator? A) Check filter → Adjust straps → Perform seal check → Put on respirator B) Adjust straps → Perform seal check → Put on respirator → Check filter
Question 45. Which of the following is an acceptable method for testing a GFCI outlet? A) Using a voltage meter only B) Pressing the “test” button on the outlet C) Shaking the outlet to see if it trips D) Applying a high-current load manually Answer: B Explanation: Pressing the built-in test button on a GFCI verifies that it trips correctly. Question 46. A “competent person” must inspect a trench at least: A) Every shift B) Once per week C) Every 24 hours, or more frequently as needed D) Only after a cave-in occurs Answer: C Explanation: OSHA requires daily inspections of trenches and additional inspections after any event that could affect stability. Question 47. Which of the following is NOT a required component of a fire watch program? A) Continuous monitoring of the area where hot work is performed B) Availability of a fire extinguisher within 30 feet of the work area C) Documentation of the fire watch’s name, start/end times, and observations D) Mandatory use of a fire-resistant blanket for all workers on site Answer: D Explanation: While fire-resistant blankets may be used, they are not a universal requirement for a fire watch program.
Question 48. The OSHA standard for electrical safety (1926.416) requires that all exposed live parts be: A) Marked with red tape only B) Guarded from accidental contact or de-energized C) Covered with a plastic sheet D) Painted black Answer: B Explanation: OSHA requires that live parts be guarded or de-energized to prevent contact. Question 49. Which of the following best describes the purpose of a “lockout” device? A) To secure a tool to a workbench B) To prevent the accidental energization of equipment during service C) To label hazardous chemicals D) To identify a qualified person on site Answer: B Explanation: A lockout device physically prevents the re-energization of equipment while maintenance is performed. Question 50. Under OSHA’s “Hierarchy of Controls,” which control method is considered the most effective? A) Personal protective equipment (PPE) B) Administrative controls C) Engineering controls D) Substitution
B) They must be authorized to perform the specific electrical task and have knowledge of the applicable standards C) They are required to hold a master electrician license in all states D) They are only needed for high-voltage work above 600 V Answer: B Explanation: A qualified person must be capable of identifying hazards and performing the task safely, with appropriate training or experience. Question 54. When working near an overhead power line, a “minimum approach distance” for a crane boom is: A) 5 feet for voltages up to 50 kV B) 10 feet for voltages up to 35 kV C) 15 feet for voltages up to 100 kV D) 20 feet for any voltage Answer: B Explanation: OSHA’s Table II- 4 - 1 (1926.1400) sets a 10-foot minimum approach for voltages up to 35 kV for non-insulated equipment. Question 55. Which of the following is required when using a powered hand tool with a “trigger lockout” feature? A) The trigger lock may be disabled if the worker is experienced B) The lockout must be engaged when the tool is not in use, even for short periods C) The lockout is optional for tools that are battery-powered D) The lockout is only required if the tool is used above 6 ft Answer: B Explanation: OSHA requires that trigger-lockout features be engaged whenever the tool is not actively being used to prevent accidental start-up.
Question 56. In the context of scaffolding, a “load capacity” sign must be posted at: A) The top of the scaffold only B) The base of the scaffold and at each level where workers stand C) Only on the scaffold guardrails D) No sign is required if the scaffold is inspected daily Answer: B Explanation: OSHA requires load capacity signage at the base and at each level to inform workers of the maximum allowable load. Question 57. Which of the following best describes “heat stroke”? A) Mild headache and dizziness from working in the sun B) A severe condition marked by body temperature > 104 °F, altered mental state, and possible organ failure C) Muscle cramps due to dehydration D) Excessive sweating without any other symptoms Answer: B Explanation: Heat stroke is a life-threatening emergency characterized by high core temperature, CNS dysfunction, and potential organ damage. Question 58. The OSHA standard for excavation and trenching (1926.650) requires that a competent person must: A) Perform daily inspections of the trench, including after any rainstorm, vibration, or other events that could affect stability B) Only inspect the trench before work begins C) Conduct inspections once per week D) Rely on the equipment operator to report hazards Answer: A
D) Must be disposable after each shift Answer: B Explanation: FR garments for steel erection must meet NFPA 2112 (or equivalent) for flame resistance. Question 62. When performing a “hot work” operation (e.g., welding) near flammable materials, the required fire-watch period after completion of the work is: A) 10 minutes B) 20 minutes C) 30 minutes D) 45 minutes Answer: C Explanation: OSHA requires a fire-watch for at least 30 minutes after completing hot work to detect smoldering fires. Question 63. Under OSHA’s “Bloodborne Pathogens” standard, the minimum required training for workers who may be exposed must be refreshed: A) Every 6 months B) Annually C) Every 2 years D) Only when new procedures are introduced Answer: B Explanation: OSHA mandates annual refresher training for bloodborne pathogen exposure. Question 64. Which of the following best describes the “Arc-Flash” hazard? A) A high-temperature plasma discharge caused by a short-circuit or fault in an electrical system
B) A flash of light produced by a welding torch C) An explosion caused by combustible gases D) A spark from a grinding wheel Answer: A Explanation: An arc-flash is a dangerous release of energy from an electrical fault, producing intense heat, light, and pressure. Question 65. The OSHA standard for “Respiratory Protection” (1926.103) requires that a respirator be selected based on: A) The worker’s personal preference B) The type of contaminant, its concentration, and the required protection factor C) The cheapest available model D) The color of the respirator for visibility Answer: B Explanation: Selection must consider contaminant type, concentration, and required protection factor (e.g., APF). Question 66. In a construction setting, a “permit-required confined space” must have all of the following EXCEPT: A) A limited or restricted means of entry or exit B) An atmosphere that may be hazardous C) A requirement for a written entry permit before work begins D) A minimum size of 10 ft³ Answer: D Explanation: OSHA does not specify a minimum size; the definition focuses on hazards, not volume.
Explanation: Color is not a safety requirement; structural integrity and load rating are. Question 70. The OSHA “Bloodborne Pathogens” standard requires employers to provide which of the following to exposed employees? A) Free vaccination against hepatitis B B) Free dental insurance C) Free gym membership D) Free transportation to work Answer: A Explanation: Employers must offer hepatitis B vaccination at no cost to employees with potential exposure. Question 71. Which of the following is a required component of a “fire-extinguisher” inspection? A) Checking the pressure gauge for proper reading B) Testing the extinguisher by discharging it on a fire C) Repainting the extinguisher annually D) Adding water to the extinguisher every month Answer: A Explanation: Inspectors must verify that the pressure gauge indicates the correct pressure; discharging is not required unless the extinguisher is used. Question 72. The OSHA standard for “Electrical – Wiring Methods” (1926.405) requires that conductors be protected from physical damage by: A) Painting them black B) Using conduit, raceway, or other approved means C) Wrapping them in duct tape
D) Placing them under a carpet Answer: B Explanation: Conductors must be protected from physical damage using conduit, raceways, or other approved protection. Question 73. Which of the following best defines “Subpart Z” of OSHA’s construction standards? A) Standards for electrical safety B) Standards for hazardous substances, including lead, asbestos, and silica C) Standards for fall protection D) Standards for personal protective equipment Answer: B Explanation: Subpart Z (29 CFR 1926.1400-1926.1448) addresses hazardous substances such as lead, asbestos, silica, and other toxic agents. Question 74. Which of the following is a required feature of a “rescue plan” for a confined-space entry? A) A list of all subcontractors on site B) Detailed procedures for atmospheric monitoring, retrieval, and emergency medical services C) The names of all workers present on the site that day D) A schedule of daily toolbox talks Answer: B Explanation: A rescue plan must include monitoring, retrieval methods, and emergency response procedures specific to the confined space. Question 75. OSHA requires that scaffolding be inspected: A) Only after a major storm
