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Home My WebLink AboutPR 22676: RATIFYING THE DECISION TO AUTHORIZE EMERGENCY REPAIRS OF TWO GENERATORS ort rrhur (etw INTEROFFICE MEMORANDUM Date: July 20, 2022 To: The Honorable Mayor and City Council Through: Ronald Burton, City Manager From: Calvin Matthews, P.E. Water Utilities Director RE: PR 22676—Electrical Transfer Station Repairs at the Water Purification Plant Introduction: The intent of this Agenda Item is to seek City Council's ratification for the emergency repair of the electrical transfer station and provide temporary power at the Water Purification Plant at 1101 H.O. Mills Boulevard. During the heavy rain event on July 1, 2022, the electrical transfer station which provides power to the Water Purification Plant was damaged. The plant could not maintain water pressure and flow without electricity at this point. Emergency authorization was sought from the City Manager due to the critical nature for the protection of public health and safety. Electrical Specialties, Inc. was the first response able to immediately mobilize to do the repairs. Electrical Specialties also provide generators as well as Peak Engineering of Port Neches, Texas for temporary power supply in the total amount of$123,587.99. Budgeted funds are available in Account No. 410-40-210-5318-00-00-000, Equipment Maintenance. Background: The electrical transfer station allows for power switching feeds between Entergy and the onsite generator at the facility. It had power surge damage caused by moisture accumulated in the switchgear, detailed as follows: On July 1, 2022 after the heavy rain event, the facility lost power and the breakers inside the switchgear that distributes power to the facility had tripped open on a ground fault. An attempt was then made to transfer the plant to the onsite generator. The manual transfer switch failed and cut power to the plant during the process. This incident prevented the plant from producing potable water or maintaining pressure. The rental generators were arranged right away for the temporary power supply to prevent a boil water notice. The electrician later determined that the switchgear had failed due to moisture "Remember,we are here to serve the Citizens of Port Arthur" fiti 'A ar INTEROFFICE MEMORANDUM Date: July 1, 2022 To: Ronald Burton, City Manager From: Calvin Matthews, P.E. Water Utilities Director Gc...—,__ RE: Approval for Emergency Repairs to Water Plant The main power transfer switch at the Water Purification Plant was damaged by water/moisture. The damage knocked out the power and prevented us from running the plant. It requires to rent generators and to repair the switch and ancillary components. The Water Utilities Department will be renting two generators from Stewart& Stevenson through Electrical Specialties Inc. and one generator from Peak Electrical Engineering to run the plant. Multiple bids were not solicited due to Local Government Code allowances to preserve Public Health and Safety from emergency conditions. This is a potential direct threat to the health and safety of the citizens of Port Arthur. Pursuant to Section 252.022(a)(2) this purchase is authorized because of a public calamity that requires the immediate appropriation of money to relieve the necessity of the municipality's residents or to preserve the property of the municipality. It is further authorized pursuant to Section 252.022(a)(3) because of unforeseen damage to public machinery, equipment, or other property. Emergency approval is requested of the City Manager to hire a contractor,Electrical Specialties Inc., to troubleshoot, rent two generators, rebuild the Automatic Transfer Switch, HI-PO test/replace the cable and make emergency repairs. This estimate of the damage is$138,000.00. The extra generator rental will cost approximately $10,000.00 through Peak Electrical Engineering for an estimated two weeks. A proposed resolution will be presented to City Council for ratification. Account number is 410- 40-210-5318-00-00-000, Equipment Maintenance. I, Ronald i• , • • .. approve the emergency repair to the Water Plant. Iiii00.. aik ak Ronald :urto . ,! City Maria, r "Remember,we are here to serve the Citizens of Port Arthur" pEAKPO Box 969 Port Neches, TX 77651 Invoice } N u I \ I- I: 1: 1 A ,. ��„n�•«m Phone: (409)729-2226 Date Invoice# 7/20/2022 5055 Bill To Ship To City of Port Arthur City of Port Arthur PO Box 1089 1 101 H.O.Mills Road Accounts Payable Port Arthur,TX 77640 Port Arthur,TX 77641 S.O. No. P.O. No. Terms Due Date Other 122-135 Net 30 8/19/2022 Fault Support and Generator Item Description Ordered Prey. Invoi... Invoiced Rate Amount Equipment Rental Generator 7/1/20222-7/7/2022 1 0 1 970.60 970.60 Equipment 3%Environmental Fee 1 0 1 29.12 29.12 Equipment Rental Cables 1 0 1 243.80 243.80 Equipment Damage Waiver for Rented Equipment 1 0 1 145.59 145.59 Freight Freight for roundtrip hotshot delivery of rental 1 0 1 2,422.19 2,422.19 generator and cables Technical Serv... After Hours Callout and Support on 7/1/2022 1 0 1 1,614.30 1,614.30 Subtotal S5,425.60 Sales Tax (8.25%) so.00 Total S5,425.60 Payments/Credits so_oo Balance Due S5,425.60 '44; ..,. Electrical Specialties Inc Invoice 1550 Langham Road Beaumont,TX 77707 Date Invoice# (409)860-5211 * Fax(409)860-5851 7/11/2022 25120-JB TECL# 17109 Bill To City of Port Arthur 1101 H.O. Mills Blvd. Port Arthur, Texas 77640 P.O. No. Terms Description Amount Test cables,rebuild existing ATS. Provided 1.5 meg generator and terminate 118,162.39 temporary cables to existing gear. Provided 200kw generator for existing MCC1600 Building and terminated cables. After completed disconnected all generators and reconnected to main power source. Tested and energized. Complete list of operations given. Regulated by the Texas Dept. of Licensing&Regulations, PO Box 12157 Sales Tax (8.25%) Austin,Texas 78711 800-803-9202 or 512-463-6599 $0.00 CREDIT CARD PAYMENTS EXCEEDING $500.00 WILL BE Total CHARGED AN ADDITIONAL 2.5% FEE. $118,162.39 Electrical Specialties, Inc. 1550 Laugh= Beaumon4 Texas 77707 Phone:(409)860-5211 Fax:(409)860-5851 www.esibmteom Residential *Commercial *Industrial *Fire& Security Systems *Monitoring Systems ORDER OF OPERATIONS In the event of main power failure on either A or B feed to TS1 and TS2 please follow the order of operations below. This will reduce the potential of exposure to hazardous voltage. This operation should be performed by qualified personnel, and the use of proper PPE is required. • First determine where the fault occurred. If the main breaker for A or B feed has tripped there is a problem within the facility and further investigation will be needed before any action is taken. Swapping feeds under this condition without isolating the cause can be dangerous. Once the fault is identified and isolated or corrected power can be brought back up following these steps. 1. Switch A and B feed breakers to off or open position in the main MCC. 2. Remove the load at each affected MCC by turning off the main breaker. 3. Move TS1 and TS2 to the Respective Feed(A feed or B feed) both switches must be on the Same Feed. Both TS1 and TS2 are Kirk Key protected care must be taken to insure proper operation. 4. Re-energize the selected feed that TSI and TS2 are in. 5. Return to the affected MCC's and re-energize the main breakers. 6. If any breaker shows a fault do not close or energize, this can cause damage to equipment, wire, or personnel. Electrical Specialties, Inc. 1550Langhan Beaumont Texas 77707 Phone(409)860-5211 Far(409)860-5851 wwweahmtcom Residential *Commercial *Industrial *Fire& Security Systems *Monitoring Systems The following is a report of the outage at the Port Arthur Water Treatment plant,possible causes, repairs made, suggested order of operations,preventative maintenance and corrective measures. Electrical Specialties Inc. was contacted 7/1/2022 of an outage at the Port Arthur water treatment facility. The B feed from the power company had failed and in an attempt to restore power the city swapped to A feed, this also failed due to a phase to phase short at TS1. Being the short occurred on the common bus ahead of the switch, both A and B feed could not be re energized ESI and The City of Port Arthur decided to bring in temporary power to keep the facility operational until repairs could be made. Possible Causes • After investigation of TS1 by Electrical Specialties Inc, Bayou Power Service, and City personnel the causes of TS1 failure was likely due to a combination offactors, the most apparent being moisture, and dust accumulation on the insulator between B and C phases inside the medium voltage switch. At the time of the failure the heat strips that help keep moisture down inside TS1 were on and operational. Repairs made • Electrical Specialties Inc., Bayou Power Services, and Dashiell Corp. repaired and tested all cables and gear. • The damaged bus, insulators, and barriers were replaced, all undamaged components were inspected cleaned and tested with 15kv Megg ohm meter by Bayou Power Services. • ESI disconnected all associated cables to be tested. • Dashiell Corp.performed a VLF A/C high Pot of all cables as per cable manufacturer recommendation. Both A and B feeder tested within range. The test report for the test will be provided to the city. • Cleaned and inspected TS2. • After all repairs Feeder A and B breakers where tested for functionality and passes. Suggested order of operations After speaking with the city personnel about the operation of TS1, TS2, and feeder breakers we decided to come up with an operational sequence to lessen the exposure of personnel to hazardous voltage. The Sequence of operation is attached. Page 1 Preventative Maintenance While the heaters provide some form of moisture control there are other actions that can be taken to lessen the potential of outages. The following are suggested measures from ESI and Bayou Power Services to prolong the life of the equipment. • It was noticed the removable panels and door could use better sealing around the edges. It was recommended to install window and door foam around the mating surface with a small bead of silicone to aid in adhesion. This will lessen the chance of moisture from blowing rain. TSI and TS2 are outdoor N3R type enclosures and have vented doors not all moisture and dust can be stopped but with proper maintenance can be greatly reduced. • Regular shut-down, inspection and cleaning of the equipment. Recommended every 2 years • Regular swap of the feeder from B to A feed Recommended Quarterly this will insure all moving parts are in working order and the cables do not stay un-energized and collect moisture. • No additional heaters are recommended. But operation of existing should be checked. • Inside the high service pump MCC the existing medium voltage gear has Multilin 269. Bayou Power Services recommended recording all set parameters in the unit. This 269 unit is obsolete and if there is a failure on it the replacement 369 or 469 will need the exact information. These Multilin units handle all RTD inputs and motor data if one faults it will render that motor inoperable. • The high service pump MCC switch gear could also benefit from a preventative maintenance cleaning. All these cabinets are linked as one unit and failure on the line voltage could cause a loss of all associated equipment. Regards, ELECTRICAL SPECIALTIES, INC. Page 2 DASHIELL CORP. 4412 Maplewood Drive Sulphur, LA 70663 Phone: 337-625-5090 Fax: 337-625-5095 VLF Cables SC4 \ TS1 A and B Feede at City of Pur Water Division E ical Specialties Inc. Port Arthur, TX July 2022 Dashiell Job#221342 DASHIELL, LLC. HIGH VOLTAGE SPECIALISTS FIELD SERVICE DIVISION FIELD TEST REPORT Rusty Trahan COMPANY: Electrical Specialties Inc Site: City of Port Arthur Water Division LOCATION: Port Arthur, Texas JOB NO: 221342 DATE OF SERVICE: 07/06/22 JOB CONTACT: Justin Burns ,, t; SCOPE OF SERVICES VLF TS1 A and B Feeder Cables ',4:,,,--°;. SERVICE/COMMENTS ,''{ .g`,i Dashiell was contracted to perform AC VLF cable testing. Upon arriving\was •ted at the TSI A Feeder outdoor disconnect switch faulted. Therefore, customer request- 1 Dashiell perform electrical testing on the A and B Feeder cab -_ .II cables wer a=.,dis nected on both ends of switchgear. All three phases were tested with accept t.e rests. r. , Ar ' p ' t IA Page 1 of 1 P.O.Box 1300 1300 Underwood Rd. 4412 Maplewood Drive Deer Park,TX 77536 Sulphur,LA 70663 Beaumont,TX 77726 (281)479-7407 (337)625-5090 (409)842-2328 HVA Report TS1 A Feeder From Disconnect Page 1 oro Company Dashiell Location Port Arthur, TX Customer PO# Owner Port Arthur Water Division Job# 221342 Owner Representative Date 07/06/2022 11:53:00 AM Temperature 90 Tested by G Allen Humidity 80 Substation Position Circuit ID TS1 A Feeder Device Under Test is Cable Rated Voltage 15.0 kV Operating Voltage 13.8 "+ Manufacturer Suppior Essex Model -li Insulation Type EPR Insulation Thickness 220 mils, V.,. Shield Type Grounding `y�,�: Conductor Size 2 AWG Conductor Material C 1`-"'OM1, 'to, #of Conductors 3 Length t.a,, Installed in Underground Age .2O13 Cable Test End Cable Far End ,-\\ ?, j Termination near Termination far '): \41-'" --- # 1-'"- # of Splices Splice Locations '. • �. Jacket - Jackell Integrity �� '\ E? Equipment rt , Equipment Used HVA60 Serialnumber GH0204.14A030 Test Setup4' Type of HV Test Maintenance Test'r�'' " Test Voltage 16.0 kVrms Waveform Sine ` i, .:\Planned Test Duration 30 min Frequency 0.1 Hz �way A�;, '.. Urrent Limit Trip out on Arc Measurements / Result ',, Breakdown4 No \" Breakdown Voltage Time to Fai_:$e 15.0kV aint fini . s Ily Step -)Itagr L rrent Capacitance Resistance Frequency 1 1• _v' s 1.2 •rms 126 nF 1.4 GOhm 0.1 Hz 2 3 4 — - Test is X Acceptable Unacceptable Comments printed with HVA Control Center,HV Diagnostics HVA Report TS1 A Feeder From SWGR Page 2 of 4 Company Dashiell Location Port Arthur Water Division Customer PO# Owner Job# 221342 Owner Representative Date 07/06/2022 11:17:00 AM Temperature 90 Tested by G Allen Humidity 80 Substation Position Circuit ID TS1 A Feeder 52-1D Device Under Test is Cable Rated Voltage 15.0 kV Operating Voltage 13.8 Manufacturer Suppior Essex Model Insulation Type EPR Insulation Thickness 220 mi Shield Type Grounding Conductor Size 2 AWG Conductor Material '- #of Conductors 3 Length Installed in Underground Age Cable Test End Cable Far End b: Termination near Termination far #of Splices Spli Location Jacket - Ja•:i--t Integrity Equipment Equipment Used HVA60 Ser .1 umber GH0204.14A030 Test Setup Type of HV Test Maintena e Tes Test Voltage 16.0 kVrms Waveform Sine "lanned Test Duration 30 min Frequency 0.1 Hz rrent Limit Trip out on Arc Measurements/ Result Breakdown V No Breakdown Voltage Time to Fai 15.0kV ant finis • s Ily Step rrent Capacitance Resistance Frequency 1 1• ; s 1.2 Arms 124 nF 1.5 GOhm 0.1 Hz 2 3 4 Test is X Acceptable Unacceptable Comments printed with HVA Control Center,HV Diagnostics HVA Report TS1 B Feeder From Disconnect Page 3 of 4 Company Dashiell Location Port Arthur, TX Customer PO# Owner Port Arthur Water Division Job# 221342 Owner Representative Date 07/06/2022 1:05:00 PM Temperature 90 Tested by G Allen Humidity 80 Substation Position Circuit ID TS1 B Feeder Device Under Test is Cable Rated Voltage 15.0 kV Operating Voltage 13.8 Manufacturer Suppior Essex Model Insulation Type EPR Insulation Thickness 220 mi Shield Type Grounding Conductor Size 2 AWG Conductor Material #of Conductors 3 Length Installed in Age Cable Test End Cable Far End Termination near Termination far #of Splices Splice Location Jacket - Jacket Integrity Equipment Equipment Used HVA60 Serialnumber GH0204.14A030 Test Setup Type of HV Test Maintena e Test t � � Test Voltage 16.0 kVrms Waveform Sine Planned Test Duration 30 min Frequency 0.1 Hz Current Limit Trip out on Arc Measurements / Result Breakdown V No Breakdown Voltage Time to Fai u 15.0kV aint fini . s Ily Step ioItagr t, trent Capacitance Resistance Frequency 1 1•`"::moi s 93 Arms 93.2 nF 2.0 GOhm 0.1 Hz 2 3 — — 4 Test is X Acceptable Unacceptable Comments printed with HVA Control Center,HV Diagnostics HVA Report TS1 B Feeder From SWGR Page 4 of 4 Company Dashiell Location Port Arthur, TX Customer PO# Owner Port Arthur Water Division Job# 221342 Owner Representative Date 07/06/2022 12:29:00 PM Temperature 90 Tested by G Allen Humidity 80 Substation Position Circuit ID TS1 B Feeder Device Under Test is Cable Rated Voltage 15.0 kV Operating Voltage 13.8 ''' Manufacturer Suppior Essex Model Insulation Type EPR Insulation Thickness 220 mils r.,.. \'; Shield Type Grounding fi , .. Conductor Size 2 AWG Conductor Material CU #of Conductors 3 Length b D y Installed in Underground Age 2015 x' Cable Test End Cable Far End t`�' ' Termination near Termination far ` � #of Splices Splice Locations . Jacket - Jacket Integrity \ �' Equipment Equipment Used HVA60 .k Serialnumber GH0204.14A030 \.., / Test Setup _ ,=. Type of HV Test Maintena .e Tes Test Voltage 16.0 kVrms Waveform Sine ' Planned Test Duration 30 min Frequency 0.1 Hz Current Limit Trip out on Arc Measurements/ Result Breakdown V No Breakdown Voltage Time to Fai ,i; 15.0kV ant fini • s Ily Y Step Voltagr t rrent Capacitance Resistance Frequency 1 1. s 98- Arms 97.9 nF 1.9 GOhm 1 0.1 Hz 2 3 14 Test is X Acceptable Unacceptable Comments printed with HVA Control Center.HV Diagnostics