In development with a small number of DOT-registered shops

180 TANK180
(325) 716-0875

For DOT-registered cargo tank test facilities

Six clocks
per tank.

Six tests, six intervals, each one decided by that tank's own attributes. Tank180 keeps them for every tank you service on one list — so "what's due next month?" is a question you answer in a second instead of a folder you have to open.

Email or a phone number, whichever you'd rather. I reply myself.

Tank on record

41-8827

  • Leakage

    In 7 days

    08/26/20251 yr08/26/2026

  • External visual

    In 80 days

    11/07/20251 yr11/07/2026

  • Internal visual

    In 580 days

    03/21/20235 yr03/21/2028

  • Pressure

    Due today

    08/19/20215 yr08/19/2026

  • Thickness

    In 298 days

    06/13/20252 yr06/13/2027

  • Lining

    Not required

    —N/AUnlined

Each interval computed from this tank's spec, lining, insulation and lading.

The shape of the problem

A shop with 600 tanks is holding 3,600 dates.

Every cargo tank carries six independent tests, each on its own interval, and each interval decided by that tank's own attributes. Insulated changes one. Lined and corrosive changes another. Vacuum-loaded with a full-opening rear head changes two.

Most shops do it in a spreadsheet, in a folder per tank, or in someone's head.

Fig. 01 · one mark per test date
Past due today
31
Due inside 30 days
148
Tracked continuously
3,600

01

What's due next month — across every customer.

Every tank you service, across every customer, sorted by the next test that comes due — with the phone number to call, right on the row.

Tanks · ordered by next test due600 tanks

Needs action 18

  • 41-8827Hilltop Fuels(325) 555-0173
    08/14/20265 days past due
    K test 5 days past due
  • 33-0142Ranly Ag Service(432) 555-0114
    08/29/2026In 10 days
    V test in 10 days
  • 41-8831Hilltop Fuels(325) 555-0173
    09/07/2026In 19 days
    P test in 19 days
  • 28-5510Anders Propane(806) 555-0122
    09/20/2026In 32 days
    I test in 32 days
  • 19-2205Corrco Chemical(915) 555-0167
    10/06/2026In 48 days
    T test in 48 days

The tank list at actual density. Names shown are sample data.

02

Every date explains itself.

Tap any due date and Tank180 shows the rule it applied, the arithmetic, and the CFR citation. When a customer tells you a test isn't due yet, the answer is already on the screen.

P — Pressure test

Procedure · 49 CFR 180.407(g)

Last test
08/14/2021 — passed
Interval
5 years — DOT 406, unlined 49 CFR 180.407(c) Table I
Due
08/31/2026 — last day of August — in 12 days

03

The report comes out of the inspection.

Record the test on a tablet in the bay, with signal or without. The 180.417(b) report and the 180.415 marking string are built from what you recorded — and Tank180 tells you if a required entry is missing before anyone signs it.

4 inspections saved on this tablet · upload when you have signal

The vocabulary

V I L P T K

Base intervals from Table I in 49 CFR 180.407(c). A tank's own attributes — insulation, lining, lading, spec — can shorten them. Tank180 applies the rule per tank, not per fleet.

  • VExternal visual Procedure · 49 CFR 180.407(d)1 yr *
  • IInternal visual Procedure · 49 CFR 180.407(e)5 yr *
  • LLining Procedure · 49 CFR 180.407(f)1 yr
  • PPressure Procedure · 49 CFR 180.407(g)5 yr *
  • TThickness Procedure · 49 CFR 180.407(i)2 yr *
  • KLeakage Procedure · 49 CFR 180.407(h)1 yr

* Shorter in corrosive service or for certain specs — see 180.407(c).

On the record

Electronic records are acceptable.

PHMSA has confirmed that electronic 180.417(b) records and digital signatures satisfy the rule. You are not required to keep paper.

  • #12-0226

    Interpretation

  • #16-0114

    Interpretation

See it before you decide anything.

Tank180 is being built with a handful of DOT-registered facilities. If you run one, I'll walk you through it — your kind of tanks, your kind of dates — and you can tell me what it gets wrong. First shops go live this fall.

Priced per site, not per seat. Every inspector in your shop, one number.

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