RFQ Event 396 Attachment A - Specifications FINAL.pdf

RFQ EVENT 396

ISDA LPG PROVER TRAILER SYSTEM

ATTACHMENT A - SPECIFICATIONS

Mobile Liquid Petroleum Gas (LPG) Calibration Trailer System

(Stainless Steel 100 and 25 gallon Capacities)

OVERVIEW

Specifications are for a mobile liquid petroleum gas (LPG) calibration trailer unit designed with one (1) -twenty five gallon (25) stainless steel LPG prover, and one (1) - one hundred (100) gallon stainless steel prover to be used by the Idaho State Bureau of Weights and Measures to verify commercial LPG meter systems for accuracy and compliance with the National Institute of Standards and Technology (NIST) Handbook 44 specifications and tolerances. The mobile unit must be designed to have LPG dispensed into each prover, and have the ability to return the LPG back into the device system being proved. The mobile unit must be fully contained and compliant with Department of Transportation (DOT) requirements, and meet all NIST Handbook 105-4 requirements (note exception to bleed valve below).

The mobile unit must also meet American Society of Mechanical Engineers (ASME) Section VIII, Division 1 Pressure Vessel Code requirements. This mobile unit must be capable of being towed by a ¾ ton truck. The pumping unit must be powered by a 110 volt, 20 amp pump and electric motor combination via a one hundred (100) foot, 10/3 electrical extension cord.

GENERAL SPECIFICATIONS:

The prover vessels must meet the specifications defined in NIST Handbook 105-4 (2016 edition). This specification can be viewed in Exhibit D – NIST Handbook 105-4 2016 Edition or online at https://www.nist.gov/publications/nist-hb-105-4-specifications-and-tolerances-reference-standards-and-field-standard. Each prover vessel must comply with the Appendix 1 Assessment Form found in NIST Handbook 105-4, pages 26 and 27.

Provers must be calibrated by a NIST recognized metrology laboratory that has LPG volume prover calibration within their scope of recognition. A calibration report or certificate of calibration must be provided to ISDA before the unit will be accepted.

The trailer must comply with Federal Motor Vehicle Safety Standards (FMVSS) and industry best practices as defined in 49 CFR Part 566.

EXCEPTION TO GENERAL SPECIFICATIONS:

Exception to NIST 105-4, section 4.10. Each prover shall have a means to facilitate the adjustment of the zero level by a valve that vents to atmosphere.

PROVER SPECIFICATIONS:

• One (1) - 25 US gallon (USG) wet bottom prover, and one (1) - 100 USG wet bottom prover.

Both provers must be constructed from type 304 stainless steel material and suitable for LPG.

https://www.nist.gov/publications/nist-hb-105-4-specifications-and-tolerances-reference-standards-and-field-standard https://www.nist.gov/publications/nist-hb-105-4-specifications-and-tolerances-reference-standards-and-field-standard

Both provers nominal capacity must be designated “To Deliver” at 60 degrees Fahrenheit at 100 pounds per square inch (PSI). Prover must be built to NIST Handbook 105-4 “Standards for LPG and Anhydrous Ammonia Volumetric Provers, 2016 edition. The prover must be constructed in accordance with ASME Section VIII Division 1 Pressure Vessel Code and manufactured to allow a maximum allowed working pressure of 250 psig, design temperature of 115 degrees F, hydrostatically tested at 375 psig. NOTE: provers must comply with all requirements of the NIST 105-4 assessment form as listed above with the exception of NIST 105-4, section 4.10. Bleeder valve option as noted above under EXCEPTION TO GENERAL SPECIFICATIONS; each prover shall be plumbed with a 3/8 or 1/4 inch threaded ¼ turn ball valve located between the prover drain valve and zero indication site gauge. This valve must be suitable for bleeding off the prover contents to a zero indication on the bottom gauge. Provers must be painted with fuel resistant paint, white in color to reduce effects of solar heat.

• Both provers must be calibrated by a NIST recognized metrology laboratory as specified in the General Specifications listed above. The calibration report or certificate must be provided before time of delivery.

• Provers shall be equipped with directional flow valves (excess flow valves) on the fill connection and on the prover discharge line. The excess flow valves must be large enough to not restrict flow.

• Provers must be affixed to the trailer by weld or bolts, and capable of being calibrated while mounted on the trailer.

• Prover body, piping, valves and associated braces that are not stainless steel shall be painted with white fuel resistant paint.

• Provers shall have all appropriate safety decals.

PUMPING SYSTEM SPECIFICATIONS:

• Explosion proof 115 volt single phase electric powered Blackmer or Corken transfer pump with 15 – 25 gallons per minute (GPM) capacity rating. Pump must be equipped with suitable differential and bypass valve to prevent pump damage.

• All plumbing on trailer shall be schedule 80, 1-1/4 inch steel with 3000 pounds threaded fittings or high pressure LPG approved hose.

• All piping, valves, and connections must be installed and meet current ASME Code for LPG and National Fire Protection Association (NFPA) 58 Liquefied Petroleum Gas Code. Welded pipe fittings not directly attached to the provers will not be accepted. Plumbing must be painted with fuel resistant paint, white in color to reduce effects of solar heat.

• All valves shall be installed to facilitate ease of operation and ergonomically positioned. Both the 100 gal prover and 25 gal prover gauges and sight glass shall face the rear of the trailer.

• Two (2)-35 feet long, 1 inch diameter LPG approved hoses. One (1) hose designated for liquid return and one (1) hose designated for vapor return. Both hoses shall have 1 inch globe valves and 1 ¾ inch acme adapters. The hoses shall be designed to remain attached to the pumping system during transport.

• Hose Reels. The liquid and vapor hoses shall have Hannay spring rewind reels capable of holding 35 foot of hose.

• System complete with excess flow valves, strainer, pressure relief valves and miscellaneous piping, valves, fittings to make the pumping system comply with the ASME Pressure Vessel Code for LPG.

• A ball valve must be installed upstream b of the pump to isolate the pump from water during the calibration process.

ELECTRICAL REQUIREMENTS:

• All electrical connections must be explosion proof.

• 100 feet of 10/3 AWG SOW extension cord.

• Heavy duty 20 amp plugs (NEMA 15-20 type).

• Each prover shall be wired with an electrical switch (on/off) that operates the discharge pump.

These switches must be conveniently located near the wet bottom zero and discharge valve so the switch and discharge valve can be operated while zeroing the prover.

• ARK-TITE hazardous location plug located between transfer pump and extension cord.

• Hannay spring-rewind reel for extension cord (must have capacity for 100 feet of 10/3 cord).

• All pump wiring must be in galvanized steel conduit.

TRAILER SPECIFICATIONS:

• Frame Construction Material: 4 inch X 2 inch X 3/16 inch thick steel boxed tubing.

• 4 inch X 2 inch X 3/16 inch X 10 inch wide channel for cross-braces and prover mounting points.

• Trailer Coating: powder coat white in color.

• Fenders: Steel diamond plate.

• Trailer Decking: 3/16 inch thick aluminum diamond plate decking that covers the entire working area.

• Trailer dimensions (including tow tongue) must not exceed 150 inches in length and 86 inches in width.

• Trailer deck dimensions must not exceed 105 (+/- 5) inches in length or 62 (+/- 5) inches in width.

• Axle type: single heavy duty 6000 pound axle.

• Tires: load range suitable for gross weight, minimum load capacity of 3500 pounds each.

• Spare tire included.

• Trailer capacity: (Gross Vehicle Weight) must accommodate both provers and pumping equipment.

• 2 inch receiver tongue hitch.

• Trailer brakes: electrically actuated.

• Leveling Jacks: Minimum of 3-3500 pound capacity swing-down leveling jacks. One jack located on trailer tongue and a minimum of 2 similar swing-down leveling jacks located at the rear corners of the trailer.

• Electrical connector: 7 way RV-style round connector.

• Lighting: water proof LED lighting. Must meet NHTSA & DOT lighting requirements for trailers.

• Wiring Junction Box: trailer wiring must converge into a central junction box for easy maintenance.

• Static Cable: minimum 50 feet, maximum 75 feet static cable 3/16 inch diameter attached to an automatic retractable real.

• Fire Extinguisher: 10 lb. class B&C rechargeable.

• Storage Box: trailer mounted weather tight metal equipment box. Dimensions; 60 (+/- 5) inches long X 30 (+/- 5) inches wide X 34 (+/- 5) inches tall.

WARRANTY:

• Contractor must provide a warranty on material and workmanship of at least 12 months from the date of acceptance. The terms of acceptance are defined in the State of Idaho Standard Contract Terms and Conditions July 2014. Any additional warranties on supplemental attached equipment that exceed 12 months shall be provided in the quote submission.