Showing posts with label pe chemical. Show all posts
Showing posts with label pe chemical. Show all posts

Friday, 7 January 2022

Here's Why You Should Consider Getting Your PE Chemical License

The Backstory - A PE Imbalance
It was year 1990. I, a freshly minted Master of Science graduate, was offered a job as an Environmental/Process Engineer in a large, multi-billion-dollar Engineering, Procurement and Construction company. After the heady weeks of honeymoon at the new job, I realized that I was just another employee at this behemoth of a company. I wanted to find out what I should I do to get noticed, and more importantly, get ahead.
I made a note of the credentials of my co-workers and superiors and found out that the ones in the techno-supervisory positions, who were engineers (as opposed to scientists or technologists) had the coveted PE designation next to their names. I quickly realized that I need to pursue a PE license to not only establish myself but also chart my path in the company.
As I scoured the roster of PE licensees in my company, I observed that these select folks were more often than not PEs in civil, structural, or mechanical engineering disciplines and less often in electrical. A PE in the chemical engineering discipline was virtually non-existent in my company, even though we had an impressive team of environmental and process engineers who had baccalaureate degrees in chemical engineering.
I broached the subject of this PE imbalance to my peers.
My peers opined that a PE requirement is for the disciplines that produce public-safety-affecting drawings in compliance with the building codes and standards and need to be issued for construction with a PE stamp. Therefore, PEs in disciplines like civil and structural abound.
However, this did not answer my original query: why are there non-existent PEs in chemical engineering in my company and the industry in general? Chemical engineers also produce drawings like the Piping and Instrumentation Diagrams (P&IDs) that form the basis of a process plant's piping design. Shouldn't these drawings require to be approved for use by a chemical engineer with his or her PE?
Digging deeper into this conundrum, I discovered that in the late 1980s and through the early 1990s, as few as 15% of all applicants to the chemical engineering portion of the National Council of Examiners for Engineering and Surveying (NCEES) passed the PE licensure examination, whereas ten years earlier to that period, this passing rate was 65% (Ref. 1). Therefore, either chemical engineers were not incentivized by their employers to pursue their PE license, or the same chemical engineers were not motivated to pursue it given the rock-bottom passing rates during that time.
Fortunately, with the timely intervention of the NCEES, the pendulum has swung in the other direction, because as recently as in the year 2020, the passing rate for the overall first-time takers of this exam was 65%, making it at par with the combined average of the passing rates for the sister disciplines (e.g., civil, electrical, mechanical, nuclear, etc.) (Ref. 2).
Now that we have addressed the old conundrum, there is no reason to shy away from the PE Chemical exam (if we discount the fact that garnering a PE license is a difficult and time-consuming process).
A PE aspirant needs to pass the first hurdle of clearing the Fundamentals of Engineering (FE), become an Engineer-in-Training (EIT), and apprentice under a licensed PE for at least four years before he or she qualifies to take the PE examination. This rigorous process to licensure ensures that the person granted a PE will have the highest professional and ethical standards of competence in the engineering profession.
The NCEES, on its website, eloquently states that obtaining an engineering license broadens career opportunities, affords credibility to one's engineering skillset, and assures the protection of the health, safety, and welfare of the public (Ref. 3).
Table of Contents

Why Pursue a PE in Chemical Engineering?
Here's Why You Should Consider Getting Your PE Chemical License
Why Pursue a PE in Chemical Engineering? - The 5 Key Points
So, why should a chemical engineer pursue obtaining a PE?
1. Versatility
The fundamentals of Chemical Engineering (ChE) and its broad and deep coursework have allowed it to play a significant role in the development of a variety of pioneering offshoot degree programs, like Polymer Science and Engineering (1909, University of Akron), Petroleum Engineering (1915, University of Pittsburgh), and the multi-disciplinary energy engineering and environmental engineering in the 1980s.
However, the PE license in chemical engineering has not been split up into the above specializations (barring environmental engineering), so a competent chemical engineer can practice in any of the aforementioned allied programs over his or her multi-decade career.
In an average 30-year career, a chemical engineer can practice in fields as diverse as chemical engineering, environmental engineering, or energy engineering in each third of his or her career span. This can be attributed to the depth and flexibility afforded by the chemical engineering discipline coupled with the armor of competence rendered by the industry-respected PE license.
2. Longevity
The term longevity, in this context, refers to staying gainfully employed in the industry and not facing the threat of a lay-off. A competent chemical engineer can easily transition to and engage in any of the allied yet specialized fields discussed earlier. Thus, by default, he or she stays in the forefront of his or her career, which in turn helps his or her employer have an experienced engineer to fulfill any future needs on newer, state-of-the-art opportunities. The versatility of a PE passively contributes to the longevity of the PE.
3. Stature
Increased longevity in a career is directly proportional to increasing one's stature in the chosen field. This invariably leads to higher levels of authority and responsibility and the eventual promotion. With promotion comes increased compensation. Not surprisingly, the median lifetime earnings of a chemical engineer are upwards of $2.1M, handily besting the sister disciplines, (Ref. 4). With the coveted PE, these earnings can see an increase by as much as 12%, (adapted from Ref. 5).
The standing of an PE is so well known in the industry that newer certifications in specialty fields like commissioning, sustainability, energy auditing, etc. recognize the PE to be a quantitative-and sometimes mandatory-prerequisite for qualifying for certifications.
4. The Great Leveler
The US is the proverbial melting pot of skilled immigrants...counting the illustrious Tesla and Einstein among them. Chemical engineers make a significant fraction of these skilled immigrants. The NCEES provides the valuable service of a credentials evaluation of these skilled immigrants against its standard of education in engineering or surveying. This ensures that they are academically qualified to take the PE licensure examination. Once licensed, these immigrant engineers are immediately held at par with the USA-born and USA-educated engineers, making the PE licensure a great leveling device within the industry. Through this process, the USA benefits from the entrepreneurial talent and ingenuity of chemical engineers from India, Jordan, South Korea, or other foreign countries at no risk. This is truly a solution that benefits everyone, including the immigrant and the host!
5. Interstate Mobility
Once you get the PE in your state of residency, you can practice in another state after you get your PE in the other state, either by comity or reciprocity through the NCEES. I would like to give a special shout-out to the NCEES for supporting the interstate mobility of licensure by providing uniform national exams, up-to-date model laws and rules, and giving the licensees access to all NCEES services in one place through the online MyNCEES account feature (Ref. 3).
Conclusion
The 2022 National Engineers Week is around the corner. Given that only 20% of today's practicing engineers are licensed (Ref. 6), let us make a pledge to pursue the PE license and move the needle in the right direction, specifically in chemical engineering. Lawyers and doctors must pass the board, accountants must be certified, even neighborhood cosmetologists need certification, so, why should we not become licensed in our proud field of chemical engineering?
Please bear in mind that as of the year 2020, there were close to a million (893,961 to be precise) professional engineering licensees (Ref. 2). Don't let yourself be held back from earning your PE and become a member of this elite club?
Go for it!
One last note before you start:
Statistics from the NCEES have clearly established that PE licensure examinees with four and a half years of engineering experience have as much as a 68% probability of success. Pass rates for examinees with fewer than or more than four and a half years of experience are lower. (The pass-rate curve is a typical normal distribution where the peak probability of success is at the four-and-a-half-year mark [adapted from Ref. 2]). Therefore, the optimal time to "go for it" is four and a half years!
References:
1. Preface by Randall N. Robinson, P.E., San Jose, CA, Chemical Engineering Reference Manual, 4th Edition; © 1987 Professional Publications, Inc., Belmont, CA.
2. NCEES 2020 Squared; © 2021 by the National Council of Examiners for Engineering and Surveying®.
3. Engineering Licensure - NCEES.
4. Brookings Institute's Hamilton Project.
5. Salaries Are Up for Mechanical Engineers - ASME, by John Kosowatz, Senior editor, ASME.org.
6. Top 5 Reasons to be a Professional Engineer; Engineers Without Borders USA; https://www.ewb-usa.org.

About the Author: Surajit Amrit

Surajit Amrit has a 30+ year career as a practicing engineer at Engineering News Record (ENR)-ranked engineering firms. He has a bachelor's degree from Indian Institute of Technology and a master's degree from Vanderbilt University. He is a licensed PE, Certified Energy Manager (CEM®) and LEED® AP. He is currently pursuing his CVS certification (Value Engineering - SAVE International). In his spare-time he enjoys reading books, listening to political satire, trail walking, and dabbling in trivia, jigsaw puzzles and numismatics.

Thursday, 12 March 2020

Chemical Admixtures in Concrete

Concrete is composed of Portland cement, water, and coarse and fine aggregates. Chemical admixtures are added to the mix immediately before or during placement. These are used primarily to reduce cost during construction, modify the properties of hardened concrete, and/or ensure quality during mixing, transporting, placing, and curing. Admixtures can enhance the durability, workability, and/or strength characteristics of concrete. They are also used to overcome specific environmental obstacles, such as cold weather or hot weather placement, along with specific early strength requirements.
Most admixtures are ready-to-use liquids that must be batched to suit a specific application and function. Admixtures must be compatible with the cementitious material, job specifications, project costs, and construction practices. Their effectiveness is dependent on the type and amount of cement, water content, mixing time, slump, and temperature. Admixtures are categorized by five specific classes: air-entraining, water-reducing, retarding, accelerating, and superplasticizers.
Air-entraining admixtures are used to produce microscopic air bubbles when concrete is mixed. The air bubbles act as a physical buffer against cracking and improve the concrete's resistance to freeze/thaw damage. Air-entrainment can also improve workability and reduce bleeding and segregation. Typically, air-entraining admixtures are added to concrete that is exposed to the environment (such as parking lots). The normal air content of concrete is between 4% and 7% of the concrete volume. Air-entrainment admixtures should meet the requirements of ASTM C260.
Water-reducing admixtures are used to reduce the water content by 5-10% to obtain specific strength in concrete using a low cement content. This results in a lower water-to-cement ratio, a desired slump, lower CO2 emissions, and energy usage per volume of concrete produced. These admixtures disperse the cement particles and make cement use more efficient. Some applications of concrete with water-reducing admixtures are bridge decks, low-slump overlays, and patching. Water-reducing admixtures should meet the requirements of ASTM C 494.
Retarding admixtures are used to slow the setting time of concrete and are typically used to counteract the effects of placement during hot weather. Higher temperatures tend to make concrete set faster, which makes placing and finishing difficult. Retarding admixtures keep concrete workable and allow more time for finishing and placing. Retarders also function as water reducers and sometimes may entrain air. ASTM C 494 is used for specific requirements. 
Chemical Admixtures in Concrete
Accelerating admixtures are used to reduce the initial setting time and give high early strength. These types of admixtures are used during cold weather placement or when rapid setting is required (such as an interstate concrete patch). Calcium chloride is the most common accelerator component and has been known to promote corrosion of steel reinforcement. ASTM D 98 is used for specific requirements. 
Superplasticizers are high-range water-reducing admixtures used to produce high-strength, high-performance flowing concrete that contain high cementitious material with a high slump. These are also used to reduce the water content by 12-30% and reduce permeability. Typically, superplasticizers are placed at the job site because their effects are not long-lasting. Superplasticizers allow workable fluid concrete to be placed with little to no vibrations. ASTM C 1017 is used for specific requirements. 
References:
https://www.nrmca.org/aboutconcrete/cips/15p.pdf
https://www.thebalancesmb.com/common-used-concrete-admixtures-845036
https://www.cement.org/cement-concrete-applications/concrete-materials/chemical-admixtures

Tuesday, 23 October 2018

Chemical Engineering: PE Exam Trends and Job Stats

Thinking about becoming a chemical engineer? To become a licensed chemical engineer, you would need to pass both the Fundamentals of Engineering (FE) Chemical exam and the Principles and Practice of Engineering (PE) Chemical exam. To find out the median chemical engineering salary as well as the job outlook for chemical engineers, check out the PE Chemical exam trends and job statistics shown below:
Chemical Engineering: PE Exam Trends and Job Stats

Monday, 31 August 2015

Important Update on Hazard Communication Standard

"Exposure to hazardous chemicals is one of the most serious threats facing American workers today," said U.S. Secretary of Labor Hilda Solis. "Revising OSHA's Hazard Communication standard will improve the quality and consistency of hazard information, making it safer for workers to do their jobs and easier for employers to stay competitive."
OSHA Law and Regulation 
The Occupational Safety and Health Act of 1970 (OSH Act) was created to ensure safety in the workplace for all. Under OSHA law and regulation, employers are responsible for providing employees with a workplace safe from potentially hazardous chemicals and substances. Businesses must follow the Hazard Communication Standard and other enforceable standards in their facilities. Employers must follow these OSHA standards to keep their workplaces free from any form of serious recognized hazards from chemicals and substances. 
OSHA also ensures that these standards are communicated in universally understood methods to ensure workplace safety. This is done through education, training programs, and outreach and assistance to employers. 
OSHA's Revised Hazard Communication Standard 
In 2013 OSHA has aligned its Hazard Communication Standard with the United Nations Globally Harmonized System of Classification and Labeling of Chemicals (GHS). 
These revisions to the Standard brought two important changes: 
  1. Use of new labeling elements 
  2. Standardized format for Safety Data Sheets (SDSs) 
Formerly the Standard enforced by OSHA was known as Material Safety Data Sheets (MSDSs). The new revised standard will not only improve workers' understanding of the hazards connected with chemicals in the workplace but will also train them to take various precautions while working with them. OSHA, in order to help companies in implementing the new standards, has been phasing the new standards in since they were first drawn in December, 2013. They hope to have the new standard fully phased in by June 1, 2016. 
What are MSDS and SDS? 
Material Safety Data Sheets (MSDSs) and Safety Data Sheets (SDSs) are generally the same. They are both documents that accompany hazardous chemicals and substances. These documents provide an outline of the dangers associated with the particular chemical or substance, their composition, the safe way of handling them, and how to safely dispose of them when necessary. 
Differences between MSDS and SDS There is little practical difference between MSDSs and SDSs, as they cover essentially the same information. The most significant difference between the two safety data sheet types is this: a SDS that is compliant with GHS mandates cannot be a MSDS. 
Earlier, MSDSs were maintained in three-ring binders. With the advent of the Internet OSHA's HCS mandates these data sheets must be kept in electronic format. If the company continues to use merely the old binders, then they are considered as noncompliant with OSHA regulations. 
16 Sections of SDSs' GHS Mandate Specifications 
The SDS had to be created and formatted in such a way that it conforms to the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The GHS mandates makes 16 standardized sections compulsory, and they must be arranged in a specific order. The GHS mandates are being globally implemented to ensure a standard communication of chemical and substance hazards across international borders. 
The 16 sections of SDS should be provided in the fixed order to comply with Hazcom Standard. 
Section 1: Identification (Product name, Manufacturer name, address or contact details) 
Section 2: Hazard(s) (Chemical label elements) 
Section 3: Composition/information on ingredients 
Section 4: First-aid measures 
Section 5: Fire-fighting measures 
Section 6: Accidental release measures 
Section 7: Handling and storage 
Section 8: Exposure controls/personal protection 
Section 9: Physical and chemical properties 
Section 10: Stability and reactivity 
Section 11: Toxicological information 
Section 12: Ecological information* 
Section 13: Disposal considerations* 
Section 14: Transport information* 
Section 15: Regulatory information* 
Section 16: Other information including additional details. 
* SDS compliance by regulatory authority of other agencies 
Violation of the OSHA HCS regulations can lead to expensive penalties, fines and litigation expenses. This is why it is essential that companies make sure their Safety Data Sheets (SDSs) conform to the specification of OSHA's new GHS-mandated standards.
MSDS is a topic covered in the Chemical PE Exam specification under the Plant Design and Operation section.