Attachment 1 Liquid Nitrogen Storage System Specifications.pdf
PDF 443 KB Posted
- Attached to
- Liquid Nitrogen Storage System
- Solicitation number
- HU000126QE030
About this file
This is a Specification Sheet for the procurement of a liquid nitrogen (LN2) storage tank system.
The solicitation requires one (1) mid-capacity, Class 2 dry-vapor cryogenic freezer with one (1) associated isothermal freezer unit. The system must feature an isothermal dry-vapor design with a jacketed liquid nitrogen reservoir integrated into the freezer wall, maintaining storage temperatures of -193°C or lower while keeping the storage chamber completely free of bulk liquid nitrogen to prevent sample submersion and cross-contamination. The unit must be constructed from cryogenic-grade stainless steel with a compact round design on heavy-duty casters, featuring a counter-balanced lockable lid with a woven gasket system and a wide neck opening of minimum 31.0 inches (787 mm) for unrestricted sample access. The system must accommodate standard industry rack configurations (square or rotary/carousel) with a minimum capacity of 22,100 vials (221 boxes across 17 racks) or 1,120 50 mL cryobags, supported by a maximum 75-liter LN2 reservoir. Multi-layer vacuum insulation is required to maintain thermal uniformity with minimal internal temperature gradients. The exterior dimensions must not exceed 37.0 inches width × 48.0 inches depth × 47.5 inches height, with minimum usable interior dimensions of 31.0 inches diameter and 29.0 inches height.
The system must include an integrated microprocessing auto-fill and monitoring system with dual-temperature display monitoring, automated LN2 level sensing, auto-fill triggering, and programmable high/low alarm thresholds. Dual relief valves with explicit Maximum Allowable Working Pressure (MAWP) ratings are required for pressure management. Delivery to 4301 Jones Bridge Road, Bethesda, MD 20814, Building 3118 must include professional white-glove delivery, complete mechanical and vacuum-insulated piping hookup, sensor calibration, system pressure testing, full operational startup, and on-site user training by certified technicians. The quoted system must include freezer racks specifically designed to maximize the unit's internal storage capacity.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Attachment 2 Provisions and Clauses.pdf | ||
| RFQ Liquid Nitrogen Storage System.pdf |
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
LIQUID NITROGEN (LN2) STORAGE TANK
SPECIFICATION SHEET
1. Scope & Application This document outlines the core structural and performance specifications required for procuring a high-capacity, dry-vapor liquid nitrogen storage tank system of a Mid- Capacity (Class 2 / Standard Height) performance requirements. It ensures optimal biological sample preservation without direct LN2 contact, minimal evaporation loss, and long-term vacuum stability.
QTY: 1 storage tank
QTY: 1 isothermal freezer
2. Core Technical Specifications
2.1 Thermal Performance
Operating Phase: Isothermal dry-vapor design utilizing a jacketed liquid nitrogen reservoir incorporated directly into the wall of the freezer unit. The storage chamber must remain completely free of bulk liquid nitrogen to eliminate direct sample submersion, cross-contamination, and safety risks associated with handling liquid nitrogen.
Thermal Uniformity: Must maintain industry-standard temperature consistency throughout the storage area, achieving an average operating temperature of - 193C or lower in the dry-vapor phase with a minimal internal temperature gradient.
Insulation Type: Multi-layer high-performance vacuum insulation jacket separating the LN2 outer jacket wall and external environment.
2.2 Structural & Material Integrity
Constructed Material: Heavy-duty, cryogenic-grade stainless steel construction.
Form Factor & Mobility: Compact round space-saving design mounted on heavy-duty casters for ease of mobility.
Lid & Gasket System: Features a counter-balanced, lockable lid with an advanced woven lid gasket design to ensure a tight thermal seal and increased interior visibility during sample retrieval.
Piping & Tubing: Features integrated annular fill and sensor tube routing.
Access & Neck Geometry: Wide neck opening (minimum 31.0 in. /787 mm) providing unrestricted sample access and maximum internal visibility while maintaining low thermal loss.
2.3 Storage & Configuration
System Flexibility: Accommodates all standard industry rack systems (square or rotary/carousel configurations).
Footprint Efficiency: Must match the internal usable space of standard liquid nitrogen freezers to ensure zero loss of usable storage volume.
Class 2 Storage Racking Capacity: Must support up to 17 standard racks holding 13 boxes per rack (total minimum capacity of 221 boxes / 22,100 vials per unit).
2.4 Safety & Monitoring
Automated Controller & Monitoring System: Comes equipped with an integrated microprocessing auto-fill and monitoring system featuring:
o Dual-temperature display monitoring.
o Automated LN2 level sensing and auto-fill triggering.
o Programmable high/low liquid level and temperature alarm thresholds.
Operator Safety: Complete isolation of LN2 in the jacketed perimeter wall to eliminate splashing, cold-burn risks, or sample immersion hazards during operation.
Pressure Management: Dual relief valves with explicit Maximum Allowable Working Pressure (MAWP) ratings to safely manage LN2 jacket pressure.
3. Salient Performance Characteristics: Mid-Capacity Dry-Vapor Cryogenic Freezer (Class 2 Baseline) (The following specifications establish the minimum technical and operational thresholds for this unit class)
3.1 Volumetric & Sample Capacities
Minimum 2 mL Vial Storage Capacity: 22,100 vials (221 boxes total across 17 racks)
Minimum 50 mL Cryobag Capacity: 1,120 bags Maximum LN2 Reservoir Capacity: 75 Liters
3.2 Dimensional Constraints & Footprint
Maximum Exterior Dimensions (W X D X H):
o Width: 37.0 in. (939 mm) o Depth: 48.0 in. (1,219 mm) o Height: 47.5 in. (1,206 mm)
Minimum Usable Interior Dimensions:
o Usable Diameter: 31.0 in. (787 mm) o Usable Height: 29.0 in. (787 mm) o Neck Opening Diameter: 31.0 in. (787 mm)
4. Delivery
• The liquid nitrogen storage system shall include professional white-glove delivery, complete mechanical and vacuum-insulated piping hookup, sensor calibration, system pressure testing, and full operational startup with on-site user training by certified technicians.
• 4301 Jones Bridge Road, Bethesda, MD 20814, Building 3118.
3.3 Freezer Racks
• The quoted liquid nitrogen storage system must include freezer racks designed to maximize the specific unit's internal storage capacity.
File details come from the government source that posted it. Updated .