Skip to main content

What Does Gasket Installation Really Cost ?


What Will a Steam Leak Cost?



For this scenario, we have two pipe fitters: Doodley DoRight & Didley Doofus. Both employees work at similar companies in town with the exact same amount of experience and training. Doodley DoRight places a high degree of importance on the installation of gaskets in his plant, whereas Didley Doofus prides himself on how fast he can install the gasket and move on to the next task. 

Below is a side by side comparison of Doodley & Didley’s installation of each gasket in the same application in a single bolted flange connection and the associated costs over a short, 12-day period.






Based on this scenario, here are a few things to consider: Proper gasket installation is initially more time consuming but it improves your return on investment (ROI) – increasing operating profit by reducing overall downtime and gasket inventory requirements. This analysis is based on one 3” 150# bolted flange joint. Just think about how many bolted joints are in an average industrial facility, and just how many of these bolted joints leak on average.

The Cost of a Correct Gasket Installation

    3” 150# ring gasket (1/8”)

    Cost of intermediate pipefitter: $30.00/hr

    Steam cost of $11.38/1000 lbs (150 psig) of stea


Small Steam Leak = Big Cost

To help illustrate the costs associated with steam leaks, I have put together a bar graph using a steam loss calculator from American Plant Maintenance, found at www.apmnortheast.com. The graph shows the average cost of a steam leak based on the diameter of the leak.




Now just imagine the above costs associated with 5, 10 or even 25 leaking bolted joint assemblies in your plant. Pretty scary thought, isn’t it?

Finally, the most important part of installing a gasket correctly is the safety factor. I mean, what if the final failure occurred during the last retightening sequence? Didley could have been seriously burned which could have resulted in a loss time incident, heavy fines or even a lawsuit. Let’s not forget that there are also environmental considerations which failing to comply with could introduce hefty fines, negative media attention or even remediation


Comments

Popular posts from this blog

Which Removable Insulation Cover Materials to chose?

Flexible, removable insulation covers find application in heavy industries where swift or regular access to equipment is essential. These covers are crucial for insulating heat (or cold) to ensure safety, energy efficiency, and precision in industrial processes. A common inquiry revolves around the choice of fabric under specific circumstances. One pivotal factor to contemplate is whether the material is in direct contact with the equipment or exposed to external elements.   Presented below is a Decision Table to assist you in making informed choices:   Link We hope this table will facilitate your choice next time you require flexible removable cover insulation. Call Robco or Prodimax if you need further information.

Que signifie "Fire-Safe" pour le choix d'un joint d'étanchéité ?

 Dans le processus de sélection des matériaux de joints, de nombreuses questions portent sur le terme "sécurité incendie". Examinons brièvement les deux méthodes d'essai au feu les plus couramment utilisées pour les joints : API 6FA ET API 607. API 6FA : Le test 6FA-re de l'American Petroleum Institute est utilisé pour qualifier les vannes destinées aux procédés chimiques. La bride est assemblée selon les procédures de boulonnage appropriées et tous les paramètres tels que la contrainte et le couple sont enregistrés. Des thermocouples sont montés à 1 pouce de l'extérieur de la bride (figure 1). La vanne est enveloppée d'une flamme à l'aide de quatre brûleurs au propane disposés symétriquement autour de l'extérieur de la bride. La température de la flamme doit être comprise entre 1400ºF et 1800ºF (moyenne des deux thermocouples) pendant une période de combustion de 30 minutes à partir de l'allumage. La température est maintenue et aucune valeur n...

What does Fire-Safe mean when choosing a Gasket?

  In the process of gasket material selection, many inquiries point to the term “fire-safe”. Lets briefly look at the two most commonly used gasket fire testing methods: API 6FA & API 607. API 6FA: The American Petroleum Institute’s 6FA-re test is used to qualify valves for chemical process service.  The flange is assembled using proper bolt-up procedures and all parameters such as stress and torque are recorded. Thermocouples are mounted 1” away from the outside of the flange (Figure 1). The valve is enveloped in flame using four propane burners arranged symmetrically around the outside of the flange. The flame temperature should be 1400ºF to 1800ºF (average of the two thermocouples) for a burn period of 30 minutes from ignition. The temperature is maintained with no reading less than 1300ºF. An internal water pressure amounting to 75% of the flange rating is applied throughout the test and the leakage rate is continually measured. The test rig is then allowed t...