Harold Beeson - Academia.edu (original) (raw)

Papers by Harold Beeson

Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: 10th Volume

Journal of Testing and Evaluation, 2002

Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Ninth Volume

Predictability of gaseous impact ignition sensitivity from autoignition temperature data. D Hirsc... more Predictability of gaseous impact ignition sensitivity from autoignition temperature data. D Hirsch, E Skarsgard, H Beeson, C Bryan Ninth International Symposium on Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres, 521-528, 2000. ...

Observations on materials combustion in space systems• For spacecraft fire risk assessment, it wo... more Observations on materials combustion in space systems• For spacecraft fire risk assessment, it would be useful to evaluate the amounts of material which would burn before extinguishment due to oxygen depletion• Relationships among heat release and oxygen consumption (Parker 1982*) in corroboration with known MOC values for materials could be used for this purpose

Abstract : This report documents the validation testing of the extinguishing system for metal fir... more Abstract : This report documents the validation testing of the extinguishing system for metal fires developed as part of Phases I-IV. The results of this validation testing form the basis of information from which draft military specifications necessary to procure the agent and the agent delivery system may be developed. The developed system was tested against a variety of large-scale metal fire scenarios and the capabilities of the system assessed. In addition the response of the system to storage and to changes in ambient conditions was tested. Results of this testing revealed that the developed system represented a reliable metal fire extinguishing system that could control and extinguish very large metal fires. The specifications developed for the agent and for the delivery system are discussed in detail. Keywords: Fire suppression, Metal fires, Fire extinguishers.

Astm Special Technical Publication, 1995

The NASA White Sands Test Facility (WSTF) is developing cleaning and verification processes to re... more The NASA White Sands Test Facility (WSTF) is developing cleaning and verification processes to replace currently used chlorofluorocarbon-113- (CFC-113-) based processes. The processes being evaluated include both aqueous- and solvent-based techniques. The presentation will include the findings of investigations of aqueous cleaning and verification processes that are based on a draft of a proposed NASA Kennedy Space Center (KSC) cleaning procedure. Verification testing with known contaminants, such as hydraulic fluid and commonly used oils, established correlations between nonvolatile residue and CFC-113. Recoveries ranged from 35 to 60 percent of theoretical. WSTF is also investigating enhancements to aqueous sampling for organics and particulates. Although aqueous alternatives have been identified for several processes, a need still exists for nonaqueous solvent cleaning, such as the cleaning and cleanliness verification of gauges used for oxygen service. The cleaning effectiveness of tetrachloroethylene (PCE), trichloroethylene (TCE), ethanol, hydrochlorofluorocarbon-225 (HCFC-225), tert-butylmethylether, and n-Hexane was evaluated using aerospace gauges and precision instruments and then compared to the cleaning effectiveness of CFC-113. Solvents considered for use in oxygen systems were also tested for oxygen compatibility using high-pressure oxygen autoignition and liquid oxygen mechanical impact testing.

The NASA White Sands Test Facility (WSTF) has developed an entirely aqueous final cleaning and ve... more The NASA White Sands Test Facility (WSTF) has developed an entirely aqueous final cleaning and verification process to replace the current chlorofluorocarbon (CFC) 113 based process. This process has been accepted for final cleaning and cleanliness verification of WSTF ground support equipment. The aqueous process relies on ultrapure water at 50 C (323 K) and ultrasonic agitation for removal of organic compounds and particulate. The cleanliness is verified bv determining the total organic carbon (TOC) content and filtration with particulate counting. The effectiveness of the aqueous methods for detecting hydrocarbon contamination and particulate was compared to the accepted CFC 113 sampling procedures. Testing with known contaminants, such as hydraulic fluid and cutting and lubricating oils, to establish a correlation between aqueous TOC and CFC 113 nonvolatile residue (NVR) was performed. Particulate sampling on cleaned batches of hardware that were randomly separated and sampled by the two methods was performed. This paper presents the approach and results, and discusses the issues in establishing the equivalence of aqueous sampling to CFC 113 sampling, while describing the approach for implementing aqueous techniques on Space Shuttle Propulsion hardware.

Abstract : This Technical Report is divided into two volumes. Volume I consists of the front matt... more Abstract : This Technical Report is divided into two volumes. Volume I consists of the front matter and text while Volume II consists of Appendices A - J. Fire testing shows that, in outdoor applications, the fire extinguishment capability of Halon 2402 is superior to that of Halon 1211 and 1301. The increase in effectiveness is due to better agent application properties (Halon 2402 is ejected as a liquid), better fuel-inerting capacity (lower vapor pressure), and improved flame suppression (possibly resulting from the presence of two bromine atoms). An environmental assessment shows no environmentally unacceptable properties: however, toxicity during agent use could be problematical.

Qualitative correlations between ground upward flammability tests and flammability testing in mic... more Qualitative correlations between ground upward flammability tests and flammability testing in microgravity indicate that NASA STD 6001 Test 1 provides conservative results by sustaining flaming combustion in less severe environ- ments than those in which extinguishment occurs in quiescent microgravity environments. The upward flammabil- ity test is conducted in the most severe flaming combustion environment expected in the spacecraft. Its

SAE Technical Paper Series, 2005

Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Eighth Volume, 1997

ABSTRACT

SAE Technical Paper Series, 2003

... The editorial and review work for this edition were coordinated by Sarah R. Smith, NASA Johns... more ... The editorial and review work for this edition were coordinated by Sarah R. Smith, NASA Johnson Space Center White Sands Test Facility, Las ... MSS NASA NBP NBS NEMA NER NFPA NHB NiO NSS NTIS NTP NTSB NVR OCA OHFRA OHM OPR ORI ORR OSHA OTR PDR ...

Review of Progress in Quantitative Nondestructive Evaluation, 1995

Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Fourth Volume, 1989

ABSTRACT The 316, 321, 440C, and 17-4 PH stainless steels, as well as Inconel 600, Inconel 718, W... more ABSTRACT The 316, 321, 440C, and 17-4 PH stainless steels, as well as Inconel 600, Inconel 718, Waspaloy, Monel 400, and Al 2219, have been evaluated for relative nonflammability in a high-pressure oxygen environment with a view to the comparative advantages of four different flammability-ranking methods. The effects of changes in test pressure, sample diameter, promoter type, and sample configuration on ranking method results are evaluated; ranking methods employing velocity as the primary ranking criterion are limited by diameter effects, while those which use extinguishing pressure are nonselective for metals with similar flammabilities.