NYC CUSTODIAN ENGINEER EXAM PRACTICE TEST QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE| INSTANT DOWNLOAD
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Core Domains
- Building Operations and Maintenance Fundamentals
- HVAC Systems and Boiler Operation
- Fire Safety and FDNY Certificate of Fitness Requirements
- Electrical Safety and Lockout/Tagout Procedures
- Plumbing Systems and Water Quality Management
- Preventive Maintenance and Equipment Inspection
- Environmental Safety and Hazardous Materials Handling
- Regulatory Compliance and Legal Standards
- Ethics and Professional Standards
- Emergency Response and Crisis Management
Introduction
The NYC Custodian Engineer Exam assesses the critical knowledge and skills required for effective facility
management and building maintenance in New York City public schools. This examination evaluates
candidates' competency in building operations, HVAC systems, boiler operation, fire safety protocols,
electrical safety procedures, plumbing maintenance, preventive maintenance strategies, hazardous materials
handling, and regulatory compliance requirements.
,The exam consists of multiple-choice and scenario-based questions designed to test both foundational theory
and applied professional knowledge. Questions emphasize real-world application and decision-making skills
essential for custodian engineers who maintain school facilities. The assessment covers FDNY Certificate of
Fitness requirements, OSHA safety standards, New York City building codes, electrical lockout/tagout
procedures, fire extinguisher classifications, boiler safety operations, HVAC system maintenance, plumbing
code compliance, and environmental safety protocols.
Success on this exam demonstrates readiness to perform custodian engineering duties including equipment
inspection, emergency response, preventive maintenance scheduling, hazardous material identification, and
adherence to professional ethics and legal standards in an educational facility environment.
Section One: Questions 1–100
Question 1
What is the primary purpose of implementing a lockout/tagout procedure before servicing electrical
equipment?
A. To reduce energy consumption during maintenance
B. To prevent unexpected equipment startup that could cause injury
C. To document maintenance activities for regulatory compliance
D. To schedule maintenance during off-peak hours
🟢 B. To prevent unexpected equipment startup that could cause injury
,🔴 RATIONALE: Lockout/tagout procedures are designed to physically isolate energy sources and prevent
accidental energization or startup of equipment during maintenance, which could result in serious injury or
death to workers.
Question 2
Which fire extinguisher class is specifically designed for cooking oil and grease fires in commercial kitchens?
A. Class A
B. Class B
C. Class K
D. Class C
🟢 C. Class K
🔴 RATIONALE: Class K fire extinguishers are specifically designed for high-temperature cooking fires
involving flammable liquids like cooking oils and greases, which are common in commercial kitchen
environments.
Question 3
A custodian engineer discovers a water leak in a school basement. What is the FIRST action they should take?
A. Call a licensed plumber immediately
B. Document the leak with photographs
C. Secure the area to prevent student access
D. Attempt to repair the leak themselves
, 🟢 C. Secure the area to prevent student access
🔴 RATIONALE: The priority in any safety incident is protecting people. Securing the area prevents students
from accessing a potentially hazardous situation (slip hazard, electrical risk, or structural concern) before
addressing the mechanical issue.
Question 4
Which of the following is NOT a requirement for operating a boiler safely?
A. Regular inspection of pressure gauges
B. Maintaining proper water level
C. Increasing pressure beyond maximum rating during emergencies
D. Testing low-water cutoff devices
🟢 C. Increasing pressure beyond maximum rating during emergencies
🔴 RATIONALE: Operating a boiler above its maximum rated pressure is extremely dangerous and can cause
catastrophic failure. Safe boiler operation requires maintaining pressure within specified limits, never
exceeding maximum ratings.
Question 5
What does the acronym OSHA stand for?
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE| INSTANT DOWNLOAD
Core Domains
- Building Operations and Maintenance Fundamentals
- HVAC Systems and Boiler Operation
- Fire Safety and FDNY Certificate of Fitness Requirements
- Electrical Safety and Lockout/Tagout Procedures
- Plumbing Systems and Water Quality Management
- Preventive Maintenance and Equipment Inspection
- Environmental Safety and Hazardous Materials Handling
- Regulatory Compliance and Legal Standards
- Ethics and Professional Standards
- Emergency Response and Crisis Management
Introduction
The NYC Custodian Engineer Exam assesses the critical knowledge and skills required for effective facility
management and building maintenance in New York City public schools. This examination evaluates
candidates' competency in building operations, HVAC systems, boiler operation, fire safety protocols,
electrical safety procedures, plumbing maintenance, preventive maintenance strategies, hazardous materials
handling, and regulatory compliance requirements.
,The exam consists of multiple-choice and scenario-based questions designed to test both foundational theory
and applied professional knowledge. Questions emphasize real-world application and decision-making skills
essential for custodian engineers who maintain school facilities. The assessment covers FDNY Certificate of
Fitness requirements, OSHA safety standards, New York City building codes, electrical lockout/tagout
procedures, fire extinguisher classifications, boiler safety operations, HVAC system maintenance, plumbing
code compliance, and environmental safety protocols.
Success on this exam demonstrates readiness to perform custodian engineering duties including equipment
inspection, emergency response, preventive maintenance scheduling, hazardous material identification, and
adherence to professional ethics and legal standards in an educational facility environment.
Section One: Questions 1–100
Question 1
What is the primary purpose of implementing a lockout/tagout procedure before servicing electrical
equipment?
A. To reduce energy consumption during maintenance
B. To prevent unexpected equipment startup that could cause injury
C. To document maintenance activities for regulatory compliance
D. To schedule maintenance during off-peak hours
🟢 B. To prevent unexpected equipment startup that could cause injury
,🔴 RATIONALE: Lockout/tagout procedures are designed to physically isolate energy sources and prevent
accidental energization or startup of equipment during maintenance, which could result in serious injury or
death to workers.
Question 2
Which fire extinguisher class is specifically designed for cooking oil and grease fires in commercial kitchens?
A. Class A
B. Class B
C. Class K
D. Class C
🟢 C. Class K
🔴 RATIONALE: Class K fire extinguishers are specifically designed for high-temperature cooking fires
involving flammable liquids like cooking oils and greases, which are common in commercial kitchen
environments.
Question 3
A custodian engineer discovers a water leak in a school basement. What is the FIRST action they should take?
A. Call a licensed plumber immediately
B. Document the leak with photographs
C. Secure the area to prevent student access
D. Attempt to repair the leak themselves
, 🟢 C. Secure the area to prevent student access
🔴 RATIONALE: The priority in any safety incident is protecting people. Securing the area prevents students
from accessing a potentially hazardous situation (slip hazard, electrical risk, or structural concern) before
addressing the mechanical issue.
Question 4
Which of the following is NOT a requirement for operating a boiler safely?
A. Regular inspection of pressure gauges
B. Maintaining proper water level
C. Increasing pressure beyond maximum rating during emergencies
D. Testing low-water cutoff devices
🟢 C. Increasing pressure beyond maximum rating during emergencies
🔴 RATIONALE: Operating a boiler above its maximum rated pressure is extremely dangerous and can cause
catastrophic failure. Safe boiler operation requires maintaining pressure within specified limits, never
exceeding maximum ratings.
Question 5
What does the acronym OSHA stand for?
