PPE Use Standard (SSP-0011) Y Full Face Shield / Goggles Hood Clothing—Chemical Protection Gloves—Chemical Personal Fall Protection Respirator / Filter Mask Supplied Air Job Hazards Y es Job Hazards Y es Access and EgressMoving Parts Activities of OthersNoise Adverse WeatherRail Movement Chemical ExposureSharp Edges ElectricitySlips, Trips, and Falls FatigueStatic Electricity Fire and ExplosionTrip Injuries Ground ContaminationTrapped Pressure Manual HandlingWorking at Height Other: References / Documents  MSDS on gasoline.  Unit Safe Upper & Lower Limits Spreadsheet AreaUnitOperating Procedure #Certified byRevision #DatePage 3LabOPS-LB-PS of 2 Copper Strip Corrosion of LPG’s EnvironmentalSpecial Instructions EquipmentMaterials and Reagents  Corrosion Test Cylinder (conforming to requirements of ASTM D1838.  Water Bath (100 ± 1°F)  Copper Test Strip (conforming to requirements of ASTM D1838).  Isooctane  OO grade or finer steel wool.  Silicon carbide grit paper (240-grit)  ASTM Copper Corrosion Standard Plaque Scope / Objective This procedure covers the detection of components present in liquefied petroleum gases that would be detrimental to copper and copper-alloy fittings and connections that are commonly used in transportation storage and utility equipment. Note: This procedure is only valid at the time of printing. The control version can be found on the Meraux Refinery intranet. Completed Date:Prepared By:Approved By: Copper Strip Corrosion of LPG’s 1Place a sheet of silicon carbide paper on a flat surface and moisten with isooctane. 2Remove all surface blemishes from all 6 sides of strip using steel wool or silicon carbide paper. 3 Once all blemishes are removed, polish first the ends and then the sides with 105 µm (150-µm mesh) silicon carbide grains picked up with pad of absorbent cotton moistened with isooctane. 4Polish strip uniformly using long strokes that carry beyond the end of copper strip. 5Remove any metal dust with clean cotton pads moistened with isooctane. 6When strip is clean, with minimal delay, attach to dip tube and lower into prepared test cylinder (see note below). NOTE: Prior to testing, clean test cylinder thoroughly with isooctane and dry. Immediately before polishing strip, with bottom valve open on cylinder, add 1 ml distilled water to cylinder and swirl to moisten walls. Allow any excess water to drain from cylinder. 7After assembly of cylinder with strip, close both the top and then the lower valves of cylinder. 8 Keeping cylinder in upright position (to prevent copper strip from getting wet by touching walls of cylinder). Deliver prepared cylinder assembly to unit for sample collection. 9With minimal delay after sample collection, immerse sample in water bath maintained at 100 ± 1° F. 10Allow cylinder to remain in bath for 1 hour ± 5 minutes. 11At the end of the test period, remove cylinder from bath.

AreaUnitOperating Procedure #Certified byRevision #DatePage 3LabOPS-LB-PS of 2 Copper Strip Corrosion of LPG’s Continued Note: This procedure is only valid at the time of printing. The control version can be found on the Meraux Refinery intranet. Completed Date:Prepared By:Approved By: Copper Strip Corrosion of LPG’s (continued) 12Under vented hood, hold cylinder in upright position and slowly open lower valve to release liquid/vapor sample into sink. 13Disassemble cylinder immediately and remove copper strip. 14Compare strip to ASTM Copper Strip Corrosion Standards. 15 Report result in accordance with the following classification: