New Confined Spaces in Construction Standard – FAQs

New Confined Spaces in Construction Standard – FAQs By now you’ve probably heard about the about the Occupational Safety and Health Administration’s (OSHA) addition to 29 CFR 1926 Subpart AA that updates the rules for confined spaces in the construction industry. On May 4, 2015 OSHA announced the new rules which took effect on August 3, 2015. Since that time, the questions about atmospheric monitoring have been pouring in, but we’re here to help! Below are some of the most... Read More

NFPA Confined Space Committee

I have spent the past two days in Philadelphia , PA working with the newly established NFPA Confined Space Safe Work-practices Committee.   What a rewarding two days!  Twenty-one people from around the country collaborating on best practices and procedures towards the goal of ending confined space related deaths in the workplace. The deliverable of this team will be a recommended best practice document for safely entering... Read More

The Answer is Blowin’ in the Wind

Industrial Scientific has recently identified an issue that may result when portable gas monitors equipped with sampling pumps are used to draw a sample from a confined space outdoors in conditions when wind speeds are greater than 5 miles per hour.   Under these conditions, the gas sample may be diluted by the excess air flow attributed to the wind and cause the instrument readings to be significantly lower than actual gas... Read More

SO2 sensor and Acetylene

Question: Hey Dave, I just heard about a strange confined space monitoring incident where an Itx equipped with an SO2 sensor was alarming for no apparent reason. As it turns out, the sensor was actually picking up acetylene gas from a leak in a cutting torch hose in the confined space. The leak was too small to register on the LEL sensor, but was alarming on the SO2 sensor. I was just wondering, would the response of the SO2... Read More

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