What 178.345-5(d) means in plain language
This citation covers the secure fastening of manhole covers on hazmat tank vehicles—specifically DOT406, DOT407, and DOT412 specification tanks. These tanks carry liquids, gases, and other hazardous materials under strict containment rules. A manhole is the access point where material is loaded or unloaded, and it must be properly sealed and secured before the vehicle moves.
If an inspector finds your manhole cover loose, improperly fastened, or not meeting the specification for your tank type, you'll be cited under 178.345-5(d). The goal is straightforward: prevent spills, leaks, and exposure during transport. A failing manhole seal puts cargo, your rig, and public safety at risk.
What our enforcement data actually shows
Across our 13 million+ inspection records, 178.345-5(d) has generated 12 all-time citations, placing it at rank #2132 out of 3,036 FMCSR codes by enforcement volume. Over the last 12 months and last 90 days, our database shows zero citations for this violation—indicating it is either rare or drivers and fleets are managing it effectively.
When this citation does appear, the consequences are serious. Our inspection records show a 58.3% out-of-service rate for 178.345-5(d) violations. This is notably higher than the all-FMCSR average OOS rate of 31.4%, meaning you are substantially more likely to be pulled from service if an inspector finds a manhole securement failure. Of the 12 all-time citations in our database, 7 resulted in out-of-service orders and 5 did not.
Who gets cited most
Our inspection data does not provide a state-level breakdown for this specific code. However, the top carriers in our records with 178.345-5(d) citations include single incidents distributed across carriers such as Langer Transport Corp, Pilot Travel Centers LLC, and Texas Transeastern Inc. No single carrier dominates the citation pattern, suggesting manhole securement issues occur sporadically across the industry rather than concentrating in specific fleets.
Vehicle make data from cited units shows Kenworth (KW) appearing twice, with single citations on Heil, Freightliner (FRHT), Peterbilt (PTRB), and other tanker platforms. This spread indicates the violation is not tied to a particular manufacturer or truck configuration.
How severe is this compared to similar codes
In the Hazardous Materials category, manhole securement is one of the less frequently cited violations. For comparison, our data shows that general loading and unloading hazmat violations (177.834A-HMC) have 3,954 citations with a 99.2% OOS rate—far more common and even more punitive. Placarding violations (177.817(a)) account for 2,274 citations at 97.9% OOS.
Movement of damaged hazmat packages (177.823(a)) generates 1,829 citations at 51.8% OOS, which is close to the 58.3% rate for manhole securement. Both violations share the underlying risk: cargo containment failure during transport. However, manhole securement is much rarer in enforcement activity, suggesting it is either caught and corrected more often during pre-trip inspections or occurs less frequently than other hazmat transport defects.
How to avoid it
Before you leave the dock:
-
Verify manhole cover fit and fastening. Walk around your tank and physically inspect every manhole cover. It should sit flush against the tank opening with no gaps. Check that all bolts, clamps, or fasteners are hand-tight and secure. Do not rely on a visual sweep—touch each fastener.
-
Know your tank specification. Confirm your vehicle is a DOT406, DOT407, or DOT412 tank and understand the correct manhole assembly for that spec. If you're unfamiliar, ask your dispatcher or safety manager to review the spec placard on your tank.
-
Check for damage or corrosion. Manhole covers, gaskets, and fasteners degrade over time. Look for rust, cracks, missing bolts, or swollen gaskets. A corroded gasket will not seal properly. If you spot damage, report it to maintenance before loading.
-
Perform this check after every stop. If you stop to refuel, rest, or at a weigh station, do a quick visual and tactile check of all manhole covers. Vibration and road shock can loosen fasteners during transit.
-
Document your inspection. Many fleets require drivers to sign off on pre-trip and post-trip inspections. Use this form to specifically note manhole condition. This creates accountability and a paper trail if an issue is later found.
Manhole securement violations are rare, but when they occur, they carry a 58.3% chance of being pulled out of service. The fix is simple: inspect, tighten, and verify before every departure. A few minutes of pre-trip diligence will keep you moving and safe.