Copper Strip Corrosion of Diesel, Gasoline
Area
3
3
Job Hazards
Unit
Lab
Yes
Operating Procedure #
OPS-LB-PT-008
Job Hazards
Access and Egress
Moving Parts
Activities of Others
Noise
Adverse Weather
Rail Movement
Chemical Exposure
Sharp Edges
Electricity
Slips, Trips, and Falls
Fatigue
Static Electricity
Fire and Explosion
Trip Injuries
Ground Contamination
Trapped Pressure
Manual Handling
Working at Height
Certified by
Yes
Revision #
Scope / Objective
Page
1 of 2
PPE
Standard (SSP-0011)
This procedure covers the determination of the corrosiveness to copper of
hydrocarbon samples having a vapor pressure no greater than 18 psi @
100°F.
Use
Y
Full Face Shield / Goggles
Hood
Clothing—Chemical Protection
Gloves—Chemical
Personal Fall Protection
Respirator / Filter Mask
References / Documents
Supplied Air
 ASTM D130
Other:
Equipment
Materials and Reagents
Water bath or solid block bath, accuracy
122±2°F.

Date
10.11.2011





Test Tubes, Borosilicate Glass, 25 X
150 mm
ASTM Copper Strip Corrosion Standard
Plaque
Silicon Carbide Grit Paper, 220 grit
150-grit Silicon Carbide Grains
Forceps
Special Instructions





Temperature Sensing Device (TSD),
accuracy ± 1°C (2°F)
Copper Test Strips (see specifications
ASTM D130)
Steel wool; OU grade or finer
Isooctane
P8 Qualitative Filter Paper
Environmental
Copper Strip Corrosion of Diesel, Gasoline
1
Observe sample – if suspended water is evident, dry sample by filtering through P8 qualitative paper directly into test tube for a final
volume of 30 ml, then stopper with vented cork or rubber stopper.
2
Place a sheet of silicon carbide paper on a flat surface and moisten with isooctane.
3
Using steel wool or 220 grit silicon carbide paper, remove all surface blemishes from all 6 sides of copper test coupon.
4
Finish with 220 grit paper ensuring all marks are removed so that end result is a smooth, lustrous finish.
5
Store strip in isooctane until final polishing.
6
Pour 30-ml sample into clean, dry test tube and stopper with vented cork or rubber stopper.
7
Remove test coupon from isooctane and place on silicon carbide paper.
NOTE: To prevent contamination during final polishing, never allow test coupon to come into contact with bare fingers or water.
8
Polish first the ends and then the sides with 150-mesh silicon carbide grains picked up with a pad of absorbent cotton moistened with
isooctane.
9
Polish strip uniformly using long strokes that carry beyond the end of the copper strip.
10
Remove any metal dust with clean cotton pads moistened with isooctane.
11
When strip is clean, with minimal delay, slide copper strip into sample tube and re-stopper.
Completed Date:
Note:
Prepared By:
Approved By:
This procedure is only valid at the time of printing. The control version can be found on the Meraux Refinery intranet.
Copper Strip Corrosion of Diesel, Gasoline Continued
Area
3
3
Unit
Lab
Operating Procedure #
OPS-LB-PT-008
Certified by
Revision #
Date
10.11.2011
Copper Strip Corrosion of Diesel, Gasoline Continued
12
Place sample tube in bath equipped with vertical supports such that sample tube is held in upright position.
13
After 3h ±5 min., remove sample tube from bath using forceps.
14
Empty contents of tube into beaker and withdraw strip with forceps.
15
Immerse strip in isooctane and withdraw immediately.
16
Blot strip dry (do not rub) with filter paper.
17
Compare test strip with copper strip corrosion standard holding both at approximately 45° angle from the light source.
18
Interpret results as follows:
a. Select the color standard that most closely matches the test strip and rate the sample accordingly.
b. If strip is in transition state between 2 standards, rate the sample as the more tarnished classification.
c. Refer to Table 1 of ASTM D130 for a written description of each sample classification if needed.
Completed Date:
Note:
Prepared By:
Approved By:
This procedure is only valid at the time of printing. The control version can be found on the Meraux Refinery intranet.
Page
2 of 2