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Post Date: May 11, 2001
Category: MAINTENANCE Subcategory: NWP MONTHLY MAINTENANCE Subject: 01-241 June 2001 Monthly Maintenance Notice Text: All Shippers Letter 01-241????? ??????? Date:?? 5/11/01 Time:?? 17:00 hrs?????? ??????? ??????? ??????? TO:???? ALL SHIPPERS SUBJECT:??????? JUNE 2001 MAINTENANCE SCHEDULE The following maintenance work is scheduled on Northwest Pipeline for the month of June. Potential system impacts are identified below. Volume impact and scheduled maintenance out of service date estimates are stated as accurately as possible, but are subject to change based on factors such as ambient temperatures, actual market demand, etc.? Any variance from this notice will be indicated on a monthly scheduled maintenance notification and posted to the EBB by or before the 15th day of each month prior to the work commencing. All capacities listed in this maintenance schedule are in Dekatherms. Sumas to Mt. Vernon Compressor Stations Repair Anomalies on 26" Mainline? Date:?? ??????? June 1, 2001 to June 31, 2001 Design Cap:????? ?????? 1,097,000 Dth Available Cap:? 1,097,000 Dth As a result of the smart pigging program completed in September 1999, anomaly repair work will take place on the 26" mainline from the Sumas Compressor Station to the Mt. Vernon Compressor Station.? Pressure restriction to 647 psi will be in place from June 1 through June 13.? The remainder of this project will coincide with the work at Heartbreak Hill, Eagles Nest, and Cruise Road. No system impact is anticipated.? 26" Heartbreak Hill Pipe Replacement Date: ? ??????? June 14, 2001 to June 29, 2001 Design Cap:???????????????????????? 1,097,000 Dth Available Cap:? 800,000 to 820,000 Dth As a result of the 1999 internal inspection between Sumas and Mount Vernon Compressor Stations approximately 3,500 feet of 26" mainline at Milepost 1444 will be replaced. Approximately 28 miles of 26" mainline will be taken out of service for 15 days. 26" Eagles Nest Pipe Replacement Date:?? ??????? June 14, 2001 to June 29, 2001 Design Cap:????? ?????? 1,097,000 Dth Available Cap:? ??????? 800,000 to 820,000 Dth As a result of the 1999 internal inspection between Sumas and Mount Vernon Compressor Stations, approximately 500 feet of 26" mainline at Milepost 1443 will be replaced. Approximately 28 miles of 26" mainline will be taken out of service for 15 days. 26" Cruise Road Pipe Replacement Date:?? ??????? June 14, 2001 to June 29, 2001 Design Cap:???? ??????? 1,097,000 Dth Available Cap:? ??????? 800,000 to 820,000 Dth As a result of the 1999 internal inspection between Sumas and Mount Vernon Compressor Stations approximately 537 feet of 26" mainline at Milepost 1455 will be replaced. Approximately 28 miles of 26" mainline will be taken out of service for 15 days. Pocatello Compressor Station / Unit #1 Date:?? June 4, 2001 to June 8, 2001 Northwest will be performing an annual inspection/overhaul on unit #1 at the Pocatello Compressor Station. No system impact is anticipated. Sumas compressor Station / Unit #7 & Unit #8 Date:?????????????? June 5, 2001 & June 6, 2001 Northwest will be performing an annual inspection on unit #7 and unit #8 at the Sumas Compressor Station. No system impact is anticipated. Mount Vernon compressor Station / Unit #3 Date:?? June 7, 2001 Northwest will be performing an annual inspection on unit #3 at the Mount Vernon Compressor Station. No system impact is anticipated.? Plymouth Compressor Station / Unit #1 & Unit #2 Date:?? June 10, 2001 to June 15, 2001 Northwest will be installing a new oil filtration system on unit #1 and unit #2 at the Plymouth Compressor Station. No system impact is anticipated. Kemmerer Compressor Station / Unit #2 Date:?? June 11, 2001 to June 15, 2001 Northwest will be performing an annual inspection/overhaul on unit #2 at the Kemmerer Compressor Station. No system impact is anticipated. Camas to Eugene Pigging Project Date:?? ??????? June 11, 2001 to June 30, 2001 Design Cap:???? ??????????????????????? 343,000 Dth Available Cap:? 275,000 Dth As a result of the smart pigging program completed in October 2000, anomaly repair work will begin June 11, 2001.? The 16" Camas / Eugene line is paralleled by a 20" loop line. No system impact is anticipated. North Seattle Pigging Project Date:?? ?????????????????????? June 11, 2001 to June 23, 2001 Design Cap:???? 200,000 Dth Available Cap:? 140,000 Dth Internally inspect 10.39 miles of the original 8" and 16" loop. The job scope involves taking one line out of service at a time.? Permanent pig launching and receiving facilities will be installed at the end points of the North Seattle Lateral.? Anomaly repairs if required will be made in September 2001.? No system impact is anticipated. Soda Springs Compressor Station Date:?? June 12, 2001 to June 13, 2001 Northwest will be performing its annual DOT emergency shutdown test and will be installing new station isolation valves at the Soda Springs Compressor Station. No system impact is anticipated. South Seattle Pigging Project Date:?? ??????? July 16, 2001 to August 3, 2001 Design Cap:???? ??????? 185,000 Dth Available Cap:? 89,675 Dth As a result of the smart pigging program completed in October 2000, anomaly repair work will begin June 11, 2001.? The job scope involves taking one line out of service at a time to make necessary repairs.? The original 10 3/4" line is paralleled by a 10 3/4", 12 3/4", and 16" loop line. No system impact is anticipated. Sumas Compressor Station / A Plant Date:?? June 18, 2001 to June 19, 2001 Northwest will be performing its annual DOT emergency shutdown test and installation of new gas filters in the Sumas A plant. No system impact is anticipated. 16" Camas to Eugene Smart Pigging Project (South of Oregon City Compressor Station) Date:?? ?????????????????????? June 26, 2001 to July 19, 2001 Design Cap:???? ??????? 275,000 Dth Available Cap:? ??????? 275,000 Dth Northwest will be Smart Pigging 15 miles of the 16" Camas-Eugene line south of the Oregon City Compressor Station by installing a Permanent pig launcher and receiver. The 16" Camas / Eugene line is paralleled by a 20" loop line. No system impact is anticipated. Vernal Pigging Project Date:?? ??????? June Sometime Design Cap:???? ??????? 330,000 Dth Available Cap:? ??????? 330,000 Dth As a result of the smart pigging program completed in September 2000, anomaly repair work will begin on the 26" Ignacio to Sumas line sometime in the month of June. No system impact is anticipated. Contact your Marketing Services Representative at (801) 584-7301, for more information. WGP-W st
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