Procurement #16499


Title
RFB - Geothermal Test Well
Status
Archive
OpenDate
09/26/2017
CloseDate
10/10/2017
Description
Cherokee Nation Businesses, LLC a wholly owned Tribal company of the Cherokee Nation is seeking bids from qualified, and experienced, contractors to do a Vertical Test Bore and Formation Thermal Conductivity Test for a Vertical Ground-Loop Heat Exchanger on Closed-Loop Ground Source Heat Pump System
Detail
Cherokee Nation Businesses, LLC a wholly owned Tribal company of the Cherokee Nation is seeking bids from qualified, and experienced, contractors to do a Vertical Test Bore and Formation Thermal Conductivity Test for a Vertical Ground-Loop Heat Exchanger on Closed-Loop Ground Source Heat Pump Systems at the Cherokee Nation Museum. Work is to be done in accordance with included specifications, and location image developed by HP Engineering and 1 Architecture. Bids, on company letterhead and included a valid COI, are to be returned via email to Tina Jones, tina.jones@cnent.com, no later than close of business on October 10, 2017. 1.1 SCOPE A. A vertical bore shall be installed according to these specifications. The completed bore shall be located so that it may be incorporated into the final ground-loop heat exchanger design. A completed vertical test bore shall consist of the vertical bore with an approved polyethylene u-bend assembly installed to the completed bore depth with an approved grouting material installed in the bore annulus. B. Vertical bore can be drilled either by a mud-rotary drilling rig or by a compressed-air drilling rig whichever is most feasible based on geological conditions. C. Drilling contractor shall provide a detailed test bore report. The report shall include the following information: 1. Each formation type encountered (detailed drill log) 2. Each formation depth (in feet) 3. Depth of any significant cracks, fissures or caverns encountered 4. All water bearing zones and if encountered: a. Zone depths b. Estimated flow rate 5. Type of drilling equipment used (i.e. mud-rotary, air-rotary, air-hammer, etc.), and rig model number 6. Bag quantity of drill mud used if applicable 7. Total time to drill the test bore excluding shut-downs to obtain water or mechanical break-downs. A completed, signed report shall be supplied immediately at the conclusion of the drilling process. D. Drilling contractor shall be responsible for all permits and following all applicable codes and regulations. Where any discrepancy exists between local codes and regulations and this specification, the more stringent of the two documents prevail. E. Drilling contractor shall take all necessary precautions to protect the site from any damage resulting from the drilling operation, including all buried utilities. F. Final comprehensive report and analysis shall be performed by Geothermal Resource Technologies, Inc. (GRTI) with no exceptions. www.grti.com G. Generate a Borehole Design Project Report using Gaia Geothermal GLD 2017 software, no exception. Include full length report using input data from of Monthly Load Data from the engineer of record at the time of test well completion. 1.2 BORE DIAMETER A. The diameter of the vertical bore shall not be greater than 6 inches (152.4 mm) and shall not be less than 4.5 inches (114.3 mm). The final diameter shall be determined by the drilling contractor's available equipment. Cherokee Nation Museum Geothermal Test Well 2 1.3 COMPLETED BORE DEPTH A. The borehole depth shall be 300’. Borehole depth shall begin at 5’ below grade. B. The completed bore depth shall be within 5% of the final estimated design bore depth for the specific project. The completed depth shall be determined by the placement of the u-bend. The distance from the bottom of the u-bend to the surface shall constitute the completed bore depth. At minimum, an additional 10 feet of pipe length (on both the supply and return legs) shall be left above the installed u-bend assembly, above ground level/finished grade. C. Once the test well is completed, the tubes shall be filled with fresh water, the tube ends sealed, and the extra pipe length shall be buried 3’ below the ground level. The well shall be marked with GPS coordinates and covered with an RFID disc. Restore the lawn to pre-drilled conditions. 1.4 POLYETHYLENE U-BEND ASSEMBLY A. The polyethylene u-bend assembly shall be manufactured from a polyethylene extrusion grade material having a minimum cell classification of PE345434C per ASTM D-3350 and shall fully comply with the ISGHPA standard 1C "Ground Heat Exchanger Materials". The u-bend shall be factory assembled and pressure tested to 100 psi prior to insertion into the vertical bore. The u-bend pipe diameter shall be 3/4 inch (19 mm), 1 inch (25.4 mm) or 1-1/4 inch (31.8 mm) IPS-OD as determined from the table below: U-Bend Pipe Diameter Completed Bore Depth 3/4 in. (19 mm) Polyethylene 100 - 200 ft (30.48 – 60.96 m) 1 in. (25.4 mm) Polyethylene 150 - 300 ft (45.72 – 91.44 m) 1-1/4 in. (31.8 mm) Polyethylene 250 - 500 ft (76.20 – 152.4 m) B. Any and all connections made below grade shall be done using heat fusion. C. Pipe manufacturer and total installed u-bend length shall be reported immediately following bore completion. 1.5 GROUTING MATERIAL A. The annular space between the vertical bore wall and the u-bend assembly shall be filled with a bentonite-based grouting material with a minimum solids content of 20% with a minimum 1.0 thermal conductivity. The grouting material shall be mixed in strict accordance to the manufacturers mixing instructions. Grouting material shall be placed using a pressure pump with a tremie pipe system. The material shall be installed from the bottom to the top of the vertical bore. If any settling occurs during the initial 24-hour period after installation, additional material shall be added to insure that grouting material remains at surface level. B. In the event that a geological formation is encountered that prevents the grouting material from forming a solid seal, either a 3/8 inch (9.5 mm) or 3/4 inch (19 mm) granular bentonite material may be use through that specific formation zone. Upon completion of that specific zone, the grout slurry shall continue to be use until reaching the surface of the vertical bore. C. Grout manufacturer and percent solids shall be reported immediately following bore completion. Cherokee Nation Museum Geothermal Test Well 3 PART 2 - FORMATION THERMAL CONDUCTIVITY TEST 2.1 SCOPE A. The formation thermal conductivity test is designed to determine the average thermal conductivity of the formation for the completed bore depth. B. Testing agency responsible for data collection oversight and data analysis must have a minimum of ten years company experience in thermal conductivity testing of vertical bore heat exchangers. Experience must include not less than 100 successfully completed tests. A list of previous tests shall be made available upon request, including references and contact information. C. Use 3gpm/ton, 100% water input into computer simulation. 2.2 ELAPSED TIME AFTER BORE INSTALLATION BEFORE TESTING A. When the test bore is drilled with a mud rotary drilling device, the test shall be scheduled to start no sooner than 48 hours (2 days) after final bore completion. B. In the event that compressed air drilling is employed, the test shall be scheduled to start no sooner than 120 hour (5 days) after final bore completion. C. Ground temperature shall be measured after 2 day minimum cool-down period. 2.3 EQUIPMENT A. The testing device shall be designed so that a constant rate of heated water is supplied in an uninterrupted fashion to the u-bend assembly. B. The minimum combined accuracy of the temperature sensor and datalogger shall be ? 0.5 ?F. Loop fluid temperature readings shall be taken with temperature sensors mounted in the fluid stream. The temperature sensor and datalogger accuracy shall be verified on an annual basis with an instrument traceable to the National Institute of Standards and Technology (NIST). C. Power transducers shall have a minimum accuracy of ? 2.0 % of reading. The datalogger and power transducers shall be calibrated at least every two years by the manufacturer using recognized national or international measurement standards such as those maintained by NIST. D. The testing device shall have the capability to automatically collect data at predetermined intervals. Collected data shall be available to the design engineer in an electronic format compatible with Microsoft Excel®. E. The entire testing device shall be designed to prevent as much heat loss to the environment as possible. The testing device shall have an equivalent insulation 1.0” fiberglass. Each end of the u- bend assembly shall be insulated with a 0.5” closed-cell insulation to prevent heat loss or heat gain. F. Send NIST calibration report for each instrument used in the test. 2.4 DATA ACQUISITION FREQUENCY A. Data collection device shall have the ability to accurately determine the undisturbed formation temperature by measuring the temperature of the fluid exiting the loop prior to the Cherokee Nation Museum Geothermal Test Well 4 start of the test for a period of 20 minutes. Data shall be recorded at a maximum interval of 15 seconds during this period. B. Data shall be taken at a frequency of no more than every 5 minutes throughout the duration of the thermal conductivity test. Data collected shall consist of the following as a minimum; temperature into the loop, temperature out of the loop, ambient air temperature within the test unit compartment, ambient outdoor air temperature and input heat rate. 2.5 INPUT HEAT RATE A. The average heat input shall be within the range of 51.2 Btu/ft (15 watts) and 85.4 Btu/ft (25 watts). B. The average input heat rate shall be reported in the final analysis. 2.6 TEST DURATION A. The duration of the formation thermal conductivity test shall be a minimum of 40 hours from the initial starting time. B. Power interruptions are unacceptable for this type of testing. In the event an interruption occurs which lasts longer than 5 minutes, power should be restored as soon as possible and the test continued to conclusion. Provisions shall be made to run the test again based on the analysis of the collect data. In such event, the vertical bore shall be allowed to thermally rest for a period of at least 14 days prior to re-starting the test. 2.7 TEST DATA ANALYSIS PROCEDURE AND REPORT A. Data analysis shall follow current IGSHPA (International Ground Source Heat Pump Association) standards. Data analysis personnel shall have an engineering degree from an accredited university with a background in heat transfer and experience with Line Source theory. Documentation regarding qualifications shall be supplied upon request. B. The test report shall include calibration/accuracy documentation of the test equipment including: 1. Calibration dates of the power transducers and datalogger 2. Verification of temperature sensor accuracy as described in 2.3.B. Please note that winning bid(s) will be published. Cherokee Nation Businesses, LLC (“CNB”) reserves the right to issue one award, multiple awards, or reject all bids; any award is subject to the approval of the required funds. Responding bidders are not allowed to withdraw their bid for a period of 90 days after submittal. At the time of award, the successful bidder(s) will be required to work with the Cherokee Nation Businesses, LLC Accounting department to discuss account coding for invoices. All bids are subject to negotiation prior to award. Awards may be issued without discussion of bid received, and bids should initially be submitted on the most favorable terms from a price and technical standpoint. Any award resulting from this RFP will be subject to CNB Terms and Conditions. Your bid should indicate hourly ($) rate (when applicable), individual work effort, delivery schedule or time of completion. Any item(s) with exceptions, substitutions, exclusions, additions or qualifications must be noted and clearly indicated on return bid. Any request for information concerning bid posting is to be submitted in writing via email to Buyer listed; no verbal communication is to be initiated. In accordance with Cherokee Nation Law, , 28 C.N.C.A. §20 no contractors or subcontractors of any Cherokee Nation entity may contract with any business owned by a first degree relative of any elected official of the Cherokee Nation. TRIBAL EMPLOYMENT RIGHTS OFFICE - This procurement is subject to Cherokee Nation Tribal Employment Rights Office (“TERO”) regulations that include a fee of ½ of 1% of total contract award and, if applicable, the completion of a TERO Labor Agreement and payment of associated fees. The successful bidder’s award will be published on the Cherokee Nation’s procurement website and their performance will also be measured, recorded, and reported to the Cherokee Nation. The complete Act is available by contacting the TERO OFFICE at Tahlequah 918-453-5000. TERO bidders are required to provide a copy, front and back, of their TERO certificate with return bid(s) and failure to do so will result in such bidders not receiving the TERO preferences afforded TERO bidders under the CNE procurement and contracting policies and procedures. INSURANCE - CNB generally requires Worker’s Compensation, Commercial and/or Comprehensive General Liability, and Automobile insurance for all awarded bids. Please refer to the Bid Documents for the specific coverages required for this bid. DEBARMENT - By submitting a response to this Request for Proposal, the Contractor certifies to the best of their knowledge and belief that the Subcontractor, the firm, or any of its principals are not presently debarred, suspended, or proposed for debarment by any federal, state, local or tribal entity. This certification is a material representation of fact upon which reliance was placed when making award. If it is later determined the Subcontractor rendered an erroneous certification, in addition to other remedies available to CNB or its entities, CNB may terminate the contract resulting from this Request for Proposal for default.
Name:Tina Jones
Email:tina.jones@cnent.com
Phone:918-384-7802
Cherokee Nation Entertainment
Awards
Geo-Enterprises -- $9,800.00