Leak Testing gone bad (PSIG = Pounds per Square Inch Gauge)

I really struggle to understand how so many smart people that use the acronym “PSI” dozens of times a day, but never really grasp what it means. I have debated this topic hundreds of times as it always comes up in my LOTO and Process Safety courses and daily work I do in these safety arenas. I even asked AI if my scenario was “crazy” and it explained it the same way I was taught it in 1993. Bottom line… surface area MATTERS, as was the case in this unfortunate fatality.

At approximately 1:45 p.m. on January 14, 2015, an employee, a 22-year old Mechanic/Welder, was troubleshooting a piping leak in a customer petroleum/cargo tank. The employee pressurized the cargo compartment by using compressed air to determine leaks in the piping system. Leaks were not found.

After coming back from lunch, he went up to the top of the tank, apparently overlooked that the compartment had been pressurized, he proceeded to remove the testing lid, the testing lid blew off and struck him on the head. The testing lid he used had been fabricated in the shop. The employee was killed.

Violations/PenaltiesSeriousOtherTotal
Initial Violations819
Current Violations88
Initial Penalty$18,800$400$19,200
Current Penalty$16,920$0$16,920
FTA Penalty$0$0$0
#Citation IDCitation TypeStandard CitedIssuance DateAbatement Due DateCurrent PenaltyInitial PenaltyFTA PenaltyContestLatest EventNote
1.01001Serious5A000104/10/201505/15/2015$2,160$2,400$0I – Informal Settlement 
2.01002Serious19100132 A04/10/201510/30/2015$2,160$2,400$0I – Informal Settlement 
3.01003ASerious19100146 C0104/10/201506/30/2015$2,160$2,400$0I – Informal Settlement 
4.01003BSerious19100146 C0204/10/201506/30/2015$0$0$0I – Informal Settlement 
5.01005Serious19100146 C07 III04/10/201507/07/2015$2,160$2,400$0I – Informal Settlement 
6.01006Serious19100146 G0104/10/201506/30/2015$2,160$2,400$0I – Informal Settlement 
7.01007Serious19100147 C0104/10/201506/30/2015$2,520$2,800$0I – Informal Settlement 
8.01008Serious19100178 Q0704/10/201506/06/2015$2,160$2,400$0I – Informal Settlement 
9.01009Serious19101200 H0104/10/201507/06/2015$1,440$1,600$0I – Informal Settlement 
10.02001Other19040040 A04/10/201505/06/2015$0$400$0I – Informal SettlementCitation has been deleted.

Source: https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1021238.015

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