The importance of Calibrating and Bump-Testing our monitors (H2S)

Those who follow my accident posts are well aware of my crusade to help everyone understand the LIMITATIONS of our atmospheric monitors. Just this year, I did my 2-day PRCS training course for a well-known petrochemical business and was challenged on the limitations of the LEL sensors on these devices. During the lunch break, several participants came back with that look on their faces… yes, they called their meter provider, who provided them with the same information I had presented that morning. This should NOT be happening in 2024!

But here is a case where failing to calibrate and bump test personal monitoring devices cost a man his life!

At 9:00 p.m. on September 19, 2022, an employee, 54, was pumping wastewater out of a drain sludge containment area when, after the operation was complete, he lifted the suction hose and fell to the ground. The employee died due to acute thiosulfate intoxication from inhalation of hydrogen sulfide.

OSHA found that employees were exposed to inhalation/suffocation hazard while working in areas with potential Hydrogen Sulfide (H2S) and using H2S monitors which were NOT properly calibrated and/or bump tested.

Violations/PenaltiesSeriousWillfulRepeatOtherUnclassTotal
Initial Violations426
Current Violations426
Initial Penalty$39,064$0$0$0$0$39,064
Current Penalty$25,000$0$0$0$0$25,000
FTA Penalty$0$0$0$0$0$0
#Citation IDCitaton TypeStandard CitedIssuance DateAbatement Due DateCurrent PenaltyInitial PenaltyFTA PenaltyContestLatest EventNote
1.01001Serious5A000103/15/2023$7,000$10,938$0I – Informal Settlement 
2.01002Serious19100028 B01 I03/15/2023$4,000$6,250$0I – Informal Settlement 
3.01003ASerious19100132 D0103/15/202304/03/2023$7,000$10,938$0I – Informal Settlement 
4.01003BSerious19100132 D0203/15/202304/03/2023$0$0$0I – Informal Settlement 
5.01004Serious19101200 H0103/15/202304/03/2023$7,000$10,938$0I – Informal Settlement 
6.02001Other19100151 C03/15/202304/03/2023$0$0$0I – Informal Settlement 
7.02002Other19100303 B07 I03/15/2023$0$0$0I – Informal Settlement 

Source: https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1624194.015

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