# White Tank and Truck Repai — Hazardous Materials Safety Interpretation

**Citation:** 01-0119  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2001-05-17

01-0119 response to White Tank and Truck Repai concerning 180.405.

## Document text

<<<PAGE 1>>>

US. Department
of Transportation
400 Seventh Street, S.W
Washington, D.C
20590
Research and
Administration
Special Programs
MAY 1 7 2001
Mr. Clay Sutter
Ref. No. 01-0119
Shop Foreman
White Tank and Truck Repair
P.O. Box 469
Belleville, Illinois 62222
Dear Mr. Sutter:
This responds to your May 13, 2001 letter concerning specification requirements for MC 306
cargo tanks authorized for the transportation of hazardous materials by the Hazardous Materials
Regulations (49 CFR Parts 171-180; HMR). Specifically, you ask about damage protection
requirements for a rubber vapor boot and connecting metal piping installed on the top of an
MC 306 cargo tank.
Generally, the HMR permit a rubber attachment, such as the vapor boot pictured in your letter, to
extend beyond a cargo tank's accident damage protection device. However, metal piping that
extends above the accident damage protection may result in leakage of the lading if struck during
a rollover. Any device that could result in leakage of lading if struck during a rollover may not
extend beyond an accident damage protection device unless it is equipped with a stop valve and a
sacriticial device such as a shear section. The sacrificial device must be located in the piping
system outboard of the stop valve and within the accident protection device to prevent any
accidental loss of lading. If the metal piping pictured in your letter is not equipped with a stop
valve and a sacrificial device, then the cargo tank should be removed from service until
appropriate modifications to the piping are completed.
I hope this information is helpful. If you have further questions, please do not hesitate to contact
this office.
Sincerely,
homas G. Allan
Senior Transportation Regulations Specialist
Office of Hazardous Materials Standards
010119
180.405
→••

<<<PAGE 2>>>

Gorsky
§
180:405 F
20Z SOUTH 20TH STBELT
117 PREMIER DRIVE
'A MAILING ADDRESS:
P.O. Box 469
BELLEVILLE, IL 62223
(618) 234-6689
•OTANK & TRUCK REPAIR OO
BELLEVILLE, IL 62222
A.S.M.E. CERTIFIED - U23230
01-0119
May 13, 2001
Mr. Mazzullo,
I am looking for some information on a tank we are doing a five (5) year inspection. We
are doing a visual inspection on a MC306AL / 9000 gal. ACRO- TRAILER (manuf.) /
SN# 5370. Manufacture date is 5/10/77.
I need to know if the vapor boots and connecting tube being above roll-over rail is in
and mail hard copy.
(Please check for email message)
Sincerely,
Clay Sutter
Shop Foreman
Phone: 800-560-5936
Fax:
618-234-0178
whitetnk@apci.net

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2001/010119.pdf>
- Source ID: `phmsa`
- SHA-256: `7b969f9c7b5d830e92c1f1a36bbca32feafeac3a5216a21300555995c7c88e5a`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-23T10:26:55.089Z
- Document slug: `phmsa-interpretation-01-0119`

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