watch-out-for-dead-legs

https://www.chemicalprocessing.com/articles/2011/watch-out-for-dead-legs/?show=all

Are you doing your asset inspections properly?

The final inquiry report for an incident where smoke was observed in the passenger cabin of a flight in India has pinpointed lapses by the airliner in carrying out inspection on power turbine blades, as the probable reason behind the incident. The report mentions the following:

“Immediately after takeoff, at an altitude of about 4,500 feet, a master caution warning was triggered. The crew looked up the readings on the panels, checked all operating parameters and since everything looked normal, they continued with the ascent.
However, after reaching a height of around 6,000 feet, the crew got a call from the cabin crew in-charge about smoke inside the passenger cabin. Passengers were immediately given wet tissues and asked to go in for protective breathing system over the Public Address System.

The aircraft had a valid certificate of airworthiness and the maintenance schedule was adhered to. However, the Eddy Current Testing (inspection of thin metal for potential safety issues) later incorporated into the Engine Maintenance Manual was not carried out, the report pointed out.
The probable cause of the smoke in cabin was contamination of bleed air by engine oil due to failure of the air/oil seals of turbine shaft bearings and impeller bearings.”

http://indianexpress.com/article/india/maharashtra-chemical-factory-fire-tarapur-midc-blast-palghar-5093675/

Pigging prevents failures

https://www.worldpipelines.com/special-reports/20022017/asset-integrity-management-avoiding-the-cost-of-failure/

Good case study on retrofitting tank lightning protection

Good case study on retrofitting floating roof tank lightning protection

Safety system separation - examination of three types of machinery protection systems

Safety system separation - examination of three types of machinery protection systems

Flexitallic unveils new offshore corrosion sealing innovation

Flexitallic unveils new offshore corrosion sealing innovation: Flexitallic, the global leader in static sealing solutions, has unveiled its latest technology innovation, Corriculite, for use in corrosion sensitive applications, including those prevalent in the offshore industry.


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Robots for inspection

 http://www.oedigital.com/component/k2/item/15501-2-million-pot-for-small-pools-and-asset-integrity-robots

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Corroded steel caused 'catastrophic failure' leading to tank explosion

Corroded steel caused 'catastrophic failure' leading to tank explosion

Are you checking the integrity of your valves?

An incident where the gland packing of a valve blew out due to a defect, causing a fire, has highlighted the need for inspection test and maintenance plans for critical services. Is it covered in your Asset Integrity program? 

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Corrosion Induced Explosion of a High-Pressure Fire-Extinguishing Gas Cylinder

Thanks to Mr Satya Subrahmanyam DGM, EHS, Coromandel International Limited, for sending a link to the article Corrosion Induced Explosion of a High-Pressure Fire-Extinguishing Gas Cylinder in the Journal of Failure Analysis and Prevention -October 2014, Volume 14,Issue 5,pp 564–568 by Yong Jiang,Jian-ming Gong,Peng-jie Tang.
 The abstract of the article mentions "The failure of a high-pressure fire-extinguishing cylinder was investigated. Failure was induced by internal surface corrosion and stress corrosion cracking (SCC) due to condensation of carbonic acid. In internal surface, especially the area near the bottom of the exploded cylinder, severe corrosion was characterized by local pits. SCC initiated from these local corrosion pits was observed by metallurgical analysis. Microstructure of the failure cylinder near the internal surface consisted of multiple-banded structure and the banded structure could accelerate local corrosion initiation and propagation. The corrosion products built up on the fracture surface were primarily ferrous carbonate (FeCO₃). The determination of moisture in fire-extinguishing gas was also examined."
Be careful of your CO2 extinguishers. Traces of moisture which can get in during refilling can cause the formation of carbonic acid and cause corrosion.


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Insulation Integrity

Mechanical repair of insulation is important

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Mechanical or electrical trip system testing? - Plant services.com

Mechanical or electrical trip system testing? - Plant services.com

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Detecting-leaks-in-gas-pipes-for-the-biggies

 http://timesofindia.indiatimes.com/city/chennai/The-S-files-Detecting-leaks-in-gas-pipes-for-the-biggies/articleshow/51682957.cms

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Internal corrosion of gas cylinders and fire extinguishers

Thanks to Shri M.K.Rao, Executive Director of India Glycols limited for sending the following links to articles on how internal corrosion can effect gas cylinders and CO2 fire extinguishers.

http://www.cryogas.com/pdf/SGRLink_Ngai_Cylinders.pdf

http://link.springer.com/article/10.1007%2Fs11668-014-9851-1#page-1

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The dangers of contact cleaners

Read about the dangers of contact cleaners that are used ubiquitously in the CPI in the safety bulletin in this link
Train your maintenance and operation personnel about the hazards involved with such cleaners.


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The Link between Reliability and Safety

The Link between Reliability and Safety

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The Value of Machine Criticality Ratings

The Value of Machine Criticality Ratings


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