X hits on this document

146 views

0 shares

0 downloads

0 comments

14 / 50

PHASE II ENGINEERING DESIGN AND ANALYSIS

Starting with PERC’s requirements and Battelle’s Phase I preliminary concept design, Lincoln Composites, Inc., a manufacturer of high-pressure composite pressure vessels located in Lincoln, NE, revised and refined various composite propane tank design options, resulting in the preferred composite propane tank design described below. Following is a summary of the initial design requirements, with service conditions and nominal tank properties listed in Table 2. The full design report is provided in the Appendix.

Table 2. Service Conditions and Nominal Tank Properties

Property Service Pressure Operating Temperature Limits Minimum Rupture Pressure Structural Material

Liner Material

Vessel Mounting Vessel Diameter Vessel Length

Vessel Empty Weight (excluding hardware)

Vessel Volume (unpressurized)

Value

250 psi

  • -

    40 F to 125 F

1250 psi, 5:1 Stress Ratio (ASME Section X)

Filament-wound AdvantexTM glass fiber/amine-cured epoxy composite

Polymer: HDPE, ASTM D 3350 Cell Classification 345464A End Boss: ASTM B 221 6061-T6 Aluminum (UNS A96061)

Buried Underground

    • 40.7

      inches (existing steel)

    • 110.25

      inches (existing steel)

740 lb (existing steel)

500-gallon water capacity

Customer Requirements

The primary design requirement was for a baseline 500-gallon tank. This design is readily scalable to a 250- and 1000-gallon tank in new Lincoln Composites manufacturing line for large vessels. In the process of designing the tank, the impact to both design and manufacturing were considered to mitigate issues associated with the length change. Options for a side port were evaluated to take advantage of existing hardware, which would conceivably help to lower costs if custom-designed hardware were not required. Designing for buried operating conditions per required standard AWWA M-45 utilized the following conditions: (a) burial depth of 24 inches to 48 inches, (b) water table at ground surface, and (c) vehicle traffic load without a slab above the vessel (8000 lb on dual rear tires at 10-inch to 20-inch imprint).

Alternative Underground Propane Tank Materials, Phase II—Final Report

5

September 2009 Battelle and Lincoln Composites

Document info
Document views146
Page views146
Page last viewedWed Jan 18 04:28:04 UTC 2017
Pages50
Paragraphs1139
Words13881

Comments