Document vVDb04gR9XOdXqdV0gDd393k8

Ethanolamines/Glycol Ethers Tier 3 Procedure Section Number: Issue Number: Original Date: Revision Date: Title: References: 1703 1.5 01-02-92 Author: Bryan Abadie 01-27-98 Blowing Out Product Lines And Equipment With Nitrogen Glossary Of Equipment Identification (Text #114) 1703 Blowing Out Product Lines And Equipment With Nitrogen 1.0 Objective: 1.1 To clear process lines or equipment of liquid product that are either contaminated or is to be prepared for maintenance. 2.0 Responsibility: 2.1 It is the responsibility of the operations personnel to ensure that this procedure is fully complied with. 2.2 It is the responsibility of the operations personnel to ensure that this procedure is executed in a safe and efficient manner. 3.0 Safety notations: 3.1 Gloves and monogoggles are required to perform this task. 4.0 Special notations: 4.1 Deviating from this procedure may allow product to back up into the nitrogen hose and cause a spill. 5.0 Example: 5.1 Refer to S-313 in the S&LP book for appropriate design of a nitrogen station. 6.0 Procedure: 6.1 Hook up nitrogen at tank truck rack, drumming building, and check tank. 6.2 With the recirculation valve open on the storage tank start nitrogen blowing from all three stations. Date Printed: April 18, 1998 Printed Copies Of This Document Are Uncontrolled And Not Subject To Update. The Controlled Copy Is Maintained In File: amge/Blowline.doc Page 1 Of 2 DO A 060238 CONFIDENTIAL 6.3 When it is evident that nitrogen is reaching the storage tank. Block in the recirculation valve and allow the header to pressure up. Open the recirculation valve and allow header to depressure into the tank. Repeat this line popping until you feel that most of the liquid is out of the header. 6.4 Block in the nitrogen at all three locations and disconnect. 6.5 Pump from the storage tank back into the check tank to help eliminate excess nitrogen in the header. An initial level rise is sufficient. Leaving excess nitrogen in the system causes hammering during loading due to two phase flow. 7.0 Revisions: Revision #1 03-26-93 Deleted 5.1, 5.2, 5.3, 5.4, and 5.5. Added new 6.1, 6.2, 6.3, 6.4, and 6.5. Revision #2 10-27-94 Revised 6.5 Revision #3 Revision #4 Revision #5 12-23-94 12-23-94 04-28-95 01-27-98 Deleted note about waffer valves in section 6.1. Remove work "cotton" as description of gloves in Section 3.0 Deleted the "note section" in 6.1 due to new new piping modification change. Revised 2.1,2.2 Date Printed: April 18, 1998 Printed Copies Of This Document Are Uncontrolled And Not Subject To Update. The Controlled Copy Is Maintained In File: amge/Blowline.doc Page 2 Of 2 DO A 060P39 CONFIDENTIAL