DA Form 7468-R: Engine Generator Set Inspection Checklist – US Army personnel, DoD contractors, and facility maintenance teams across the United States rely on DA Form 7468-R to ensure engine generator sets (also called diesel generators or standby power units) are safe, reliable, and mission-ready. This standardized checklist plays a critical role in the commissioning, inspection, and testing of backup power systems at military installations, C4ISR facilities, and other DoD sites.
Whether you’re preparing for commissioning, performing routine maintenance, or verifying compliance with Army technical manuals, this guide covers everything you need to know about DA Form 7468-R, including how to complete it, key checklist items, and why it matters for operational readiness.
Download the official DA Form 7468-R PDF here:
https://armypubs.army.mil/pub/eforms/DR_a/pdf/A7468_R.pdf
What Is DA Form 7468-R?
DA Form 7468-R (dated AUG 2002) is the official Engine Generator Set Inspection Checklist (LRA) published by the Department of the Army. “LRA” refers to its use in Logistics Readiness Areas and similar maintenance contexts. The form is prescribed for use with TM 5-694, Commissioning of Electrical Systems for Command, Control, Communications, Intelligence, Surveillance, and Reconnaissance (C4ISR) Facilities.
The US Army Corps of Engineers (COE) is the proponent agency. It remains the current, authoritative form for documenting visual, mechanical, and electrical inspections of engine generator sets during installation, commissioning, and acceptance testing.
Purpose of the Engine Generator Set Inspection Checklist
Backup generators provide life-safety and mission-critical power during outages. DA Form 7468-R ensures every generator set meets strict military standards before energization and operation. It helps:
- Verify proper installation and assembly
- Identify defects early (e.g., loose connections, low fluid levels, insulation issues)
- Document electrical performance through insulation resistance, polarization index, hipot testing, and load testing
- Create a permanent record for maintenance history and compliance audits
- Support safe, reliable standby power in US Army facilities nationwide
The form is one of a series of commissioning checklists in TM 5-694 (updated February 2006) and is essential for contractors and Army technicians performing acceptance testing.
Key Sections of DA Form 7468-R
The two-page form is divided into clear, logical sections. Here’s a breakdown of exactly what it covers:
Section A – Customer Data
- Plant/Building
- Location
- Job Number
- Equipment description
- Circuit designation
- Date (YYYYMMDD)
- Test equipment type/brand and calibration due date
- Tested by (name/signature)
Section B – Equipment Data
- Manufacturer
- Style/S.O. (serial/order number)
- Voltage rating
- kW rating
- Circuit breaker size/interrupting rating
- Wet bulb and dry bulb temperatures (ambient conditions)
Section C – Visual and Electrical/Mechanical Inspection
This is the heart of the checklist. Inspectors evaluate dozens of checkpoints and mark the Condition using these codes:
A = Acceptable
R = Needs Repair/Replacement/Adjustment
C = Corrected
NA = Not Applicable
Major inspection items include:
- Exterior of equipment & equipment identification
- Bracing and completeness of assembly
- Equipment rotation and proper phase connections
- Oil level and fuel level
- Working clearance and anchorage
- Proper equipment grounding and system grounding
- Meters/gauges and alarm indicators (proper color coding)
- Filters and vents clear
- Environmental classification and provisions for spill container
- Tightness of bolted connections
- Vibration check
- Batteries and radiator fluid levels
- Fuel filter and governor/regulator verification
- Control system operation
Section D – Electrical Tests
Detailed test results are recorded here, including:
- Insulation Resistance (phase-to-ground and phase-to-phase readings in megohms)
- Polarization Index Ratio (10-minute reading / 1-minute reading)
- DC Overpotential (Hipot) Test voltage and results
- Voltage and Current Measurements at No Load, 25%, 75%, 100%, and 110% of generator rating (prime engine only)
- Phase-to-neutral, phase-to-phase, and neutral/ground readings
Important Notes on the form (must be followed):
- Perform insulation resistance measurements at 1-minute intervals.
- DC hipot testing starts at 20% of maximum test voltage and increases in equal steps.
- Maximum DC test voltage formula is provided (R × (2 × nameplate rating) × 1.6, where R = 0.8 for new installation or 0.6 after service).
- A manufacturer or supplier representative must witness commissioning tests.
- Use a load bank when possible; record engine manufacturer-recommended checks during load changes.
Step-by-Step: How to Fill Out DA Form 7468-R?
- Gather information — Collect equipment nameplate data, drawings, and calibrated test equipment.
- Complete Sections A & B before starting work.
- Perform visual/mechanical inspection (Section C) — Walk around the generator set and check every item. Record condition codes and notes.
- Conduct electrical tests (Section D) — Follow TM 5-694 Chapter 5 procedures and manufacturer instructions. Record all readings clearly.
- Add notes and signatures — Document any deficiencies, corrective actions, and who performed/witnessed the test.
- File the completed form — Retain with project records or maintenance logs.
Pro Tip: Always reference the latest manufacturer recommendations and TM 5-694 for test voltages and acceptance criteria.
Why This Checklist Matters for US Army Operations?
Reliable generator sets prevent downtime at bases, command centers, and forward operating locations. Using DA Form 7468-R ensures:
- Compliance with Army commissioning standards
- Early detection of safety hazards (e.g., improper grounding, fuel leaks)
- Documented proof of testing for audits and warranty claims
- Long-term reliability of backup power systems
Failure to properly inspect can lead to equipment damage, delayed commissioning, or mission-critical power failures.
Download DA Form 7468-R PDF (Official & Fillable)
Get the latest blank form directly from the Army Publishing Directorate:
Download DA Form 7468-R PDF
You can also find related forms (DA Form 7469-R, 7470-R, etc.) on armypubs.army.mil for complete electrical system commissioning packages.
Frequently Asked Questions (FAQs)
Q: Is DA Form 7468-R still current in 2026?
A: Yes. It remains the official form referenced in TM 5-694 and is available on the Army Publishing Directorate website.
Q: Who is required to use this form?
A: US Army electrical technicians, commissioning agents, and qualified contractors performing generator set inspections and acceptance testing.
Q: Do I need special training?
A: Yes. Personnel must be qualified in high-voltage testing, generator commissioning, and safety procedures per TM 5-694 and OSHA/NFPA standards.
Q: Where can I find a sample completed DA Form 7468-R?
A: Figure 5-5 in TM 5-694 shows a fully completed example for a 500 kW generator set.
Final Thoughts
DA Form 7468-R is more than just paperwork—it’s a proven tool that keeps America’s military power infrastructure strong and ready. Proper use of this checklist helps ensure every engine generator set passes rigorous inspection and delivers reliable backup power when it matters most.
Bookmark this page and the official PDF for quick reference on your next project. For full commissioning procedures, download TM 5-694 from the Whole Building Design Guide (WBDG).
Need help with related forms or generator maintenance? Search our site for more US Army DA forms and technical manuals.