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Chamber: Single
More suitable alternative: NO
Produces heat: YES
Risk of Fire and Explosion - Probability: 5 x Exposure: 4 x Consequence: 3 = Risk Score: 60
remove air activated heat patch before every session
Produces Static: NO
Low Flash point: NO
Main component is iron filings, which has a melting point of 1535 degree C.
Produces Fuel: NO
Produces Adverse: YES
Physiological Risk - Probability: 4 x Exposure: 4 x Consequence: 3 = Risk Score: 48
Will cause skin and deep tissue burns in hyperbaric conditions, because of enhanced oxidation of iron filings in a pure oxygen environment. Raleigh showed 269 degrees F at 3 atmospheres of oxygen (see attached paper). Remove air activated heat patch before every session
Produces Mechanical: NO
See table below to understand risk level corresponding to each risk score.
Risk Score Risk Level Risk Description
> 100 5 Extremely dangerous: do not operate facility
50 - 100 4 Very high: stop use of equipment, processs or procedure
20 - 50 3 High: required urgent attention; proceed with care
5 - 20 2 Medium: attention needed but operation may continue
< 5 1 Low: acceptable risk but noted
* Burman F. Risk Assessment Guide for Installation and Operation of Clinical Hyperbaric Facilities. San Antonio, Texas: International ATMO; 6th Edition, 2019. ISBN: 978-0-578-22098-7

Created 1/22/2021 5:26:13 PM by Elaine Horibe Song   Raleigh_Air_Activated_chemical_warmers_2005.pdf