Interview guide for utility roles: a loop for line, gas and water field crews

Utility crews work on energized lines, pressurized gas mains and the water system a town drinks from, often at night, in bad weather and after a storm has made everything harder. The people who do it well share a few habits: they follow the rules that prevent contact with energized equipment or an uncontrolled gas release every time, they stop the job when conditions change, they communicate clearly in a crew, and they answer the phone when the system fails. A utility loop has to test those habits, verify the certifications and qualifications the work requires, and follow the federal testing rules that apply to some of these jobs. This guide gives utility managers a loop for line, gas distribution and water and wastewater field roles, with a shared core and the pieces that differ by trade.

The phone screen for line crews is in electrical lineworker screening questions. Customer-site repair work is closer to the interview guide for field service roles, and inside electricians and plumbers belong in the interview guide for skilled trades. This page is for people who build, operate and maintain the utility system itself.

The loop at a glance

Stages 2 to 4 fit in one morning at your yard or training center. Apprentice and entry-level loops often add a pole climbing school or an aptitude test before stage 2; run whichever your training program and any labor agreement require, the same way for everyone.

Stage 1: the screen (20 minutes)

• "This role is on a callout rotation of [example: one week in four], and during major storms everyone works extended shifts, sometimes away from home. Can you meet that?" Callout response is the most common reason utility hires do not work out; describe it exactly.
• "The job requires a [class] commercial driver's license [within a stated time]. Do you hold it?" Only if the vehicles require it.
• "Which certifications or qualifications do you hold?" Examples: a journeyman lineworker card, operator qualification records for gas covered tasks, or a state water or wastewater operator certificate and its grade.
• "The work involves [climbing, lifting, working in trenches and confined spaces, outdoor work in all weather]. Can you perform those tasks, with or without accommodation?" Ask everyone the same way.

Stage 2: safety scenario interview (45 minutes)

Ask the shared questions to every candidate, then the trade questions for the role.

Shared questions

1. "Walk me through a job briefing you led or took part in. What was covered?" Listen for: hazards, energy sources or pressures, procedures, special precautions, personal protective equipment and who does what.
2. "Tell me about a time you stopped a job. What made you stop, and what happened next?" Listen for: a specific trigger, stopping without blame, and restarting only after the hazard was controlled. Candidates who have never stopped a job are a concern.
3. "A senior crew member wants to skip a step to finish before dark. What do you do?" Listen for: speaking up respectfully and refusing to proceed unsafely.

Line and electric

• "How do you know a line is de-energized before you work on it?" Listen for: switching orders and clearances, testing for absence of voltage, and installing grounds per procedure.
• "What determines how close you can get to an energized conductor?" Listen for: nominal voltage and minimum approach distances. OSHA's 1910.269 requires qualified employees to be trained in distinguishing exposed live parts, determining nominal voltage and the minimum approach distances.

Gas distribution

• "You arrive at an odor call and the reading inside the building is high. What do you do first?" Listen for: making the area safe, evacuating, eliminating ignition sources and following the emergency procedure, not hunting for the leak inside.
• "Which covered tasks are you qualified for now, and how were you evaluated?" Listen for: specific tasks and evaluation methods under their employer's operator qualification program.

Water and wastewater

• "A main break leaves part of the system with low pressure. What happens next?" Listen for: isolating valves, notifying the right people, and awareness of boil water notices and sampling before return to service.
• "Tell me how you prepare to enter a vault or manhole." Listen for: atmospheric testing, ventilation, permits and an attendant.

Stage 3: field task demonstration (60 minutes)

Choose one task an experienced crew member at this level does weekly, done on training equipment that is de-energized and depressurized. Examples: framing a crossarm or installing a transformer on a training pole for line roles; a service line tie-in or a meter set on a training rig for gas roles; a valve exercise, hydrant flushing procedure or chlorine residual test for water roles.

What to score

• Safety gate: personal protective equipment, testing before touching, and the procedure's safety steps, every time. A critical safety error ends the stage.
• Procedure: follows the written steps in order and says when the procedure differs from what they are used to.
• Skill: quality and pace compared with what your crew leaders set beforehand.
• Communication: clear calls to the trainer acting as a crew member, especially before anything is raised, opened or energized.

Use the same task, equipment and time limit for every candidate in the role, and ask in advance whether anyone needs an adjustment.

Stage 4: manager interview (30 minutes)

1. "Tell me about the longest storm or emergency response you worked. What was hard, and how did you look after yourself and the crew?" Listen for: fatigue awareness and staying with the rules when tired.
2. "A customer comes out and is angry that their power or water is off. What do you say?" Listen for: courtesy, a plain explanation and not promising restoration times they cannot control.
3. "How do you keep your qualifications current?" Listen for: tracking expiry dates themselves.

Scorecard competencies and weights

Example weights for a journeyman-level field role. Lock yours before the first candidate.

The weighted interview scorecard covers combining scores so a strong skill score cannot offset a safety failure.

Legal points to check

Checked against the linked primary sources as of October 2026. Not legal advice; your safety, drug and alcohol program and legal teams decide which rules apply to each role.

• Electric power work. OSHA's 29 CFR 1910.269 covers the operation and maintenance of electric power generation, transmission and distribution. It sets the training qualified employees need and requires the employer to determine, through regular supervision and inspections at least annually, that each employee follows the safety-related work practices.
• Gas pipeline drug testing. PHMSA's rules at 49 CFR 199.3 define covered functions as operations, maintenance or emergency-response functions regulated under the pipeline safety rules, performed by operators, contractors and contractors' employees. Under 49 CFR 199.105, an operator may not hire or contract for the use of a person for those functions unless the person passes a drug test or is covered by a conforming anti-drug program. Prior DOT employer records are covered by 49 CFR 40.25.
• Gas operator qualification. Under 49 CFR 192.805, each operator must have a written qualification program that identifies covered tasks and ensures, through evaluation, that people performing them are qualified. A non-qualified person may perform a covered task only when directed and observed by a qualified individual. Qualifications are tied to the employer's program, so plan how a new hire's records will be evaluated.
• Water operators. EPA explains that the Safe Drinking Water Act operator certification program works through state programs that meet EPA guidelines for operators of community and nontransient noncommunity water systems. Your state sets the grades and exams.
• Commercial drivers. For CDL drivers subject to FMCSA testing rules, 49 CFR 382.701 requires a pre-employment full query of the Drug and Alcohol Clearinghouse, with the driver's specific consent, before they perform safety-sensitive functions.
• Background checks and medical questions. For consumer reports, follow 15 U.S.C. 1681b(b) and the FCRA background check process. Medical exams, such as those for respirator use, come after a conditional offer; see pre-employment medical exams and the ADA. Non-DOT testing is in drug testing laws in hiring.

The decision rule

1. Gates: required license, certificate or qualification; no critical safety error in the field task.
2. Floor: at least 3 on safety rules and stop-work judgment.
3. Weighted total: in this example, 2.8 or higher on a 1–4 scale is an offer, conditional on required drug tests, Clearinghouse query and medical exams after the offer.
4. References: ask a former foreman how the candidate behaved on a long storm callout and when a job was stopped.

Adjusting the loop

Mistakes that weaken utility loops

• Hiring on years alone. Ask how they work, not how long.
• Vague callout expectations. Storm work is the job; say so.
• No stop-work question. The people who stop jobs are the people who come home.
• Assuming a qualification transfers. Gas covered task qualifications belong to the employer's program.