80KSC025R0004 Attachment 2 NASA Modified Grade A Specifications LNG.pdf

This document is a specification table for NASA's agency-wide Liquefied Natural Gas (LNG) supply contract, detailing the modified Grade A 97 specification requirements for LNG to be used at Marshall Space Flight Center (MSFC) and Stennis Space Center (SSC). The specification table defines precise chemical and physical properties for the LNG, including a minimum purity of 97.0% methane, with specific limitations on various components such as nitrogen (5000 ppmV max), carbon dioxide (500 ppmV max), oxygen (102 ppmV max), and other impurities. Notable specifications include "No Limit" requirements for ethane, propane, and other volatile hydrocarbons, with the understanding that these components must still be reported, and certain advanced analyses will only be conducted upon government request.