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TM 9-2330-272-14
4-64. PURGING TANK.
This
a.
b.
c.
Task Covers:
General Information
d. Steam Clean Purging
Draining Tank
e.
Forced Air Purging
Chemical Purging
Initial Setup:
Materials/Parts:
Tools/Test Equipment:
l Rags (Item 14, Appendix E)
l Common no. 2 shop set
l Combustible gas indicator set
Personnel Required: Three
l Steam cleaner
References:
Q FM 10-20
l FM 10-71
l TB 43-0212
a.
GENERAL INFORMATION
1.
2.
3.
4.
5.
6.
Removal of combustible vapors and liquids requires a coordinated effort of properly skilled safety and
maintenance personnel. This maintenance procedure is to be performed by authorized Organizational or Direct
Support Maintenance personnel with an MOS of 77F or equivalent.
A thorough reading of FM 10-20, FM 10-71, and TB 43-0212 is essential for understanding proper draining and
purging methods.
There are several methods available to eliminate combustibles from fuel tankers. The primary method is by use
of a purging chemical. Using a chemical to purge saves time, labor, and material compared to other methods. H
greatly reduces the possibility of a combustible vapor buildup after the purging procedure has been completed
and after the vapor test readings show a safe level.
Alternate methods include steam and forced air.
The methods described here will be chemical, steam, and forced air.
If the semitrailer is being shipped after draining and purging, refer to Chapter 4, Section XVII for supplemental
instructions.
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