80KSC020R0047 Attachment 1 SOW.pdf

NASA/KSC COMBINED SYNOPSIS/SOLICITATION 80KSC020R0047

Attachment 1

STATEMENT OF WORK (SOW)

Liquid Nitrogen and Liquid Oxygen Specification MC-338 Insulated Cargo Tank Motor

Vehicle

1. Scope

This document contains the requirements for the design, construction, testing, delivery, and operational training for four (4) Department of Transportation (DOT) specification MC-338 insulated cargo tank motor vehicle, hereafter referred to as a tanker or tanker trailer.

2. Requirements

a. General Requirements

i. All tanker trailers shall be designed, manufactured, and certified as DOT specification MC-338 insulated cargo tank motor vehicles in accordance with 49 CFR 178.338.

ii. Each tanker trailer shall be capable of loading, storing, and offloading both liquid nitrogen (LN2) and liquid oxygen (LO2).

iii. Tanker trailers will operate by pressure only. No pumps are to be installed on the tanker trailers.

iv. Normal operating pressure range will be 0-50 psig.

v. Physical dimensions of the tanker trailer shall permit travel over public roadways.

vi. Evaporation rate shall be <1% in 24 hours rated by LN2.

vii. Tanker trailers shall have a minimum capacity of 7,000 U.S. gallons.

viii. Tanker trailers shall be fully operational without connection to a tractor.

ix. Swagelok products shall not be used.

x. Design tanker trailer such that water will not pool and remain on any components or structures. All water shall drain off of the tanker trailer

xi. The contractor shall furnish a warranty for all tanker trailers. At a minimum, the contractor shall provide a warranty to include all defective parts and poor workmanship as well as vacuum retention for a period of at least one (1) year from the date of final acceptance at Kennedy Space Center.

xii. The contractor shall furnish a project schedule detailing major activities from project commencement through final delivery to Kennedy Space Center.

xiii. The contractor shall furnish an owner’s manual for the proper operation of the tanker trailers.

xiv. The contractor shall furnish a configuration drawing detailing liquid and gas flow paths as well as all major components.

b. Chassis

i. Chassis shall be properly designed and manufactured to permit travel over public roadways.

ii. Chassis shall be tandem-axle with dual tires.

iii. Landing gear shall be Holland Mark V.

iv. Landing gear crank shall be installed street-side.

v. Kingpin shall be 2 inches.

vi. Wheels shall be aluminum.

vii. Vaporizer shall have forward cover to prevent damage from road debris.

viii. All tanker trailers shall have a grounding reel.

c. Inner Vessel

i. Inner vessel shall contain three baffles to minimize liquid movement while the tanker trailer is in motion. Baffles shall not interfere with loading or offloading operations.

d. Outer Shell

i. Outer shell shall be A36 carbon steel with exception of the rear head. The rear head shall be 304 stainless steel.

ii. Multi-layered insulation shall be used in the annular space.

iii. Annular space shall be kept at a vacuum of no greater than 5 microns of mercury.

iv. Manhole shall be welded.

e. Piping, Valves, and Instrumentation

i. The tanker trailers shall have a primary liquid gauging device in accordance with 49 CFR 178.338-14(a) (1). The primary liquid gauging device used for filling shall be a dip-tube, trycock, or differential pressure gauge.

1. If the primary filling device cannot provide the liquid level, the tanker trailer shall have a secondary liquid level indicator installed to indicate the liquid level within the inner tank.

2. The tanker trailer must be equipped with the capability of indicating maximum fill level for LN2 and LO2. This indication must take into account weight of the lading, ullage space required, and tare weight of the tanker trailer. Assume 16,000 pounds for a tractor and a maximum gross weight of 80,000 pounds.

ii. Bottom and top fill and discharge connection shall be 3-inch CGA connections in accordance with CGA V-6 Standard Bulk Refrigerated Liquid Transfer Connections.

iii. Top and bottom fill and discharge connections shall be removable to allow the tanker trailer to change service between LN2 and LO2.

iv. The vaporizer shall be an ambient air vaporizer capable of maintaining 50 psig ullage pressure during sustained offloading operations.

v. Each tanker trailer shall have at least two pressure gauges. The pressure gauges shall be easily read by the operator during normal operation.

1. One gauge shall indicate inner vessel pressure.

2. One gauge shall indicate bottom fill/discharge line pressure.

vi. All external connections shall be fitted with a dust cap for when not in use.

vii. Sample port connection shall be SAE AS4309 3/8”.

viii. The following manufacturers are permitted for valves: Herose, Bestobell, RegO, Generant, Hoke, Rockwood, or Hy-Lok.

ix. Gauging devices shall have calibration port available to calibrate the device in place.

f. Piping Cabinet

i. The cabinet containing all or the majority of external piping, valves, etc.

shall be located at the rear of the tanker trailer.

ii. The cabinet shall have two doors that swing outward when opened.

iii. The cabinet doors shall have a mechanism to hold doors in the open position.

iv. Piping schematic, flow diagram, and liquid level conversion charts shall be provided on the inside of one of the cabinet doors. The charts must be easily readable by the operator during normal operations. The charts must not be easily susceptible to corrosion, fading, or other ambient deterioration.

v. The cabinet shall contain a document holder, which shall be easily accessible by the operator.

vi. The piping cabinet shall have the ability to be locked by a standard padlock when closed.

vii. All tanker trailers shall have a transfer hose tube. The hose tube shall be located street-side. The hose tube shall be constructed of PVC, with the exception of the compartment door and door mechanism, which shall be aluminum. Hose tube shall be large enough to accommodate a 15’ hose with 3” CGA connections. The compartment door for the hose tube shall either have the ability to be locked with a standard padlock or located within the piping cabinet.

g. Protective Coating

i. General

1. All carbon steel, aluminum, and stainless steel surfaces shall be coated except for the following: wheels, piping/tubing, valves, hardware (made from non-corrosive materials), or components provided by a manufacturer that already have corrosion protection.

2. If coating of an area or component is difficult or impossible after installation, that area or component shall be coated prior to installation.

3. All faying surfaces with an opening less than ¼” shall be sealed with polysulfide sealant.

4. The contractor shall follow coating manufacturer’s recommendations for surface preparation, application, environmental controls, and curing.

5. Inorganic zinc primer shall have a dried film thickness (DFT) of

2.5 to 4.0 mils. Thicker build-up may occur in areas limited to one square foot or less. The proper DFT shall be obtained in a single application, which may consist of multiple passes provided the coating is still wet. DFT of the topcoat shall be sufficient to ensure uniform coverage and color. Epoxy coatings shall be applied to coating manufacturer’s recommendations.

6. All coating finishes shall be free of runs, drips, ridges, waves, laps, brush marks, sags, blisters, bubbles, mudcracking, variations in color, gloss or texture, missed areas, excessive or insufficient film build-up, foreign contaminants, or dry over spray.

7. Top coats shall be colored in accordance with AMS-STD-595 White, No. 17925.

ii. Carbon Steel

1. All carbon steel surfaces shall be coated with a three-coat system.

First coat is an inorganic zinc primer, second coat is an inhibited polyamide epoxy midcoat and the topcoat is aliphatic polyurethane topcoat. Approved products are listed in Appendix B of NASA-

STD-5008B.

iii. Aluminum and Stainless Steel

1. Aluminum and stainless steel surfaces, with the exceptions listed in g.i.1, shall be coated with a two-coat system. First coat is an inhibited polyamide epoxy primer and the second coat is an aliphatic polyurethane topcoat. Approved products for use as primers for aluminum and stainless steels are listed in Appendix B of NASA-STD-5008B and annotated with an *.

3. Testing and Inspections

a. Annular space vacuum shall be held at no more than 5 microns of mercury for 72 consecutive hours in warm or cold condition.

b. Tare weight shall be recorded after the tanker trailer is complete. The scale utilized shall be NIST certified.

c. Completed tanker trailer shall be driven at least 10 miles.

d. All tanker trailers must be cleaned for oxygen service in accordance with CGA G-

4.1-2018 (Seventh Edition).

e. Normal evaporation rate shall be tested with LN2.

f. Each tanker trailer shall be cold shocked with LN2 and leak checked. The system must maintain LN2 for a minimum of one hour.

g. The Government reserves the right to witness all testing listed in section 3. In addition to the testing, the Government reserves the right to witness the inspection of surface preparation and final coating of section 2.g. The Government reserves the right to conduct final inspection of each tanker trailer prior to delivery.

h. The Government shall be notified at least 2 weeks prior to any of the testing items listed in section 3.

i. The Government shall be notified at least 2 weeks prior to oxygen cleaning.

j. The Government shall be notified at least 2 weeks prior to coating/painting.

4. Delivery and Training

a. All tanker trailer shall be delivered to Building M6-0744 (BOSS), Kennedy Space Center, Florida.

b. All tanker trailers shall be fully operational at the time of delivery.

c. For the first tanker trailer delivered the Contractor shall provide training and written procedures for the following:

i. Configuring the tanker trailer for short and long-term storage, with and without lading.

ii. Configuring the trailer for loading and conducting loading operation, through both top and bottom lines.

iii. Configuring the tanker trailer for offloading and conducting offloading operations.

iv. Configuring the tanker trailer for sampling.

v. Configuring the tanker trailer for over the road use.

d. Training shall be conducted at the time of tanker delivery at Kennedy Space Center, FL. Training details shall be coordinated with the Contracting Officer Representative (COR) at least four (4) weeks prior to tanker trailer delivery.

5. Deliverables The Contractor shall furnish by email the following deliverables below.

SOW Section Reference

Deliverable Due Date Submit To

2.a.xi Vacuum and workmanship warranty information

Three business days after contract award

Contracting Officer

(CO)

2.a.xii Project Schedule Fourteen calendar days after contract award

CO and COR

2.a.i Hydrostatic or pneumatic test report

Upon completion for each tanker trailer

CO and COR

2.a.i American Society of Mechanical Engineers (ASME) Form U-1

Upon completion for each tanker trailer

CO and COR

SOW Section Reference

Deliverable Due Date Submit To

3.a-j Notification to Government prior to work listed in Section 3

2 weeks before testing or inspection activity begins

COR

3.d Oxygen cleanliness report After final cleaning for each tanker trailer

CO and COR

2.g Surface preparation and coating/painting report

After final coating for each tanker trailer

CO and COR

3.a Annular space vacuum retention test report

Upon completion for each tanker trailer

CO and COR

3.b Recorded tare weight Upon completion for each tanker trailer

CO and COR

3.c Results of road test Upon completion for each tanker trailer

CO and COR

3.e Results of normal evaporation rate test

Upon completion for each tanker trailer

CO and COR

3.f Results of cold shock and LN2 leak test

Upon completion for each tanker trailer

CO and COR

2.a.xiii Owner’s manual Two weeks prior to delivery of tanker trailers

COR

2.a.xiv Configuration drawing Two weeks prior to delivery of tanker trailers

COR

4.c Written Procedures Two weeks prior to delivery of tanker trailers

COR

(End)