{'fraction_non_alphanumeric': 0.023719165085388995, 'fraction_numerical': 0.017077798861480076, 'mean_word_length': 4.552631578947368, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Fire Resistance Tests for Thermal Insulation

This report presents the results of a test program to evaluate the relative performance of three high-temperature thermal insulation systems for steel pipes. Each insulation was installed in two 1 ½-in. thick layers over 3-in. steel pipe and covered by a stainless steel jacket. Nine-ft. 10-in. lengths of insulated pipes were exposed to the ASTM E119 time/temperature profile for two hours and the temperatures of the pipe wall were measured. Times to reach a temperature of 1000° F on the pipe wall were recorded to be approximately one hour for mineral wool insulation and one and one-half hours for perlite insulation. The third sample, calcium silicate insulation, had reached a maximum temperature of 850° F on pipe wall at two hours when the test was terminated. (Extra polation of the curve indicated that calcium silicate insulation would have reached 1000° F in two hours and twelve minutes.) The report also contains a pictorial assessment of damage to the insula tion and pipe after the exposure.