Question 1
A Section VIII cylindrical shell is designed using t = PR/(SE - 0.6P). If P = 1.4 MPa, inside radius R = 600 mm, allowable stress S = 138 MPa, weld joint efficiency E = 0.85, and no corrosion allowance is specified, what required thickness is closest?
Correct Answer:
7.2 mm
Explanation:
Substitute the given values: t = (1.4 × 600)/[(138 × 0.85) - (0.6 × 1.4)] = 840/116.46 = 7.21 mm, so 7.2 mm is closest.
Question 2
For a cylindrical pressure vessel using P = SEt/(R + 0.6t), what is the approximate MAWP when S = 120 MPa, E = 1.00, t = 10 mm, and R = 500 mm?
Correct Answer:
2.37 MPa
Explanation:
P = (120 × 1.00 × 10)/(500 + 0.6 × 10) = 1200/506 = 2.37 MPa.
Question 3
An unstayed circular flat head is evaluated with t = d√(CP/SE). If d = 500 mm, C = 0.30, P = 1.2 MPa, S = 120 MPa, and E = 1.0, what thickness is required?
Correct Answer:
27.4 mm
Explanation:
t = 500√[(0.30 × 1.2)/(120 × 1.0)] = 500√0.003 = 27.39 mm, approximately 27.4 mm.
Question 4
A boiler has a maximum designed steaming capacity of 18 000 kg/h. If two identical pressure relief valves are used and their combined rated capacity must be at least the boiler capacity, what minimum rated capacity should each valve have?
Correct Answer:
9 000 kg/h
Explanation:
For two identical valves, the required aggregate capacity is 18 000 kg/h. Each valve therefore needs at least 18 000/2 = 9 000 kg/h.
Question 5
For an opening in a pressure vessel shell, the required reinforcement area is 1 200 mm². The shell excess thickness contributes 700 mm² and the nozzle excess thickness contributes 350 mm². Ignoring weld metal credit, how much additional reinforcement area is required?
Correct Answer:
150 mm²
Explanation:
Available reinforcement is 700 + 350 = 1 050 mm². The shortfall is 1 200 - 1 050 = 150 mm².
Question 1
Exam overview

About this Exam

The 320-Hour Lash Specialty License is a specialized certification pathway for aspiring beauty professionals dedicated to the art of eyelash extensions. Unlike a full esthetician license, this program focuses specifically on the safety, theory, and application of classic and volume lash techniques. It is designed for individuals who want to fast-track their career into the booming lash industry and secure a legal license to practice. This license validates your expertise in eye anatomy, sanitation protocols, and precision application methods required for professional practice.

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Additional Information

What the Course Entails and Exam Details

The curriculum for this specialty license is rigorous and split between theory and hands-on practical training. Students must complete 320 hours of instruction at an approved beauty school.

The core topics you will master include:

  • Bacteriology, Sanitation, and Sterilization: Essential safety protocols for preventing cross-contamination and eye infections.
  • Anatomy and Physiology of the Eye: Understanding eye structure, diseases, and disorders that may contraindicate lash services.
  • Eyelash Application Techniques: Comprehensive training on applying classic, hybrid, and volume lash extensions correctly and safely.
  • Product Knowledge and Chemistry: Understanding adhesives, lash types (material, curl, length), and removal products.
  • Client Consultation and Business Practices: Learning how to assess client expectations, maintain records, and understand licensing laws and regulations (such as those enforced by the state board, e.g., TDLR).


What to Expect in the Final Exam

The final licensing exam generally consists of two primary components: a written (theory) exam and a practical (hands-on) exam.

  • The Written Exam: This portion typically features multiple-choice questions covering all theoretical aspects of the course. You will be tested heavily on sanitation procedures, eye disorders, and licensing laws. You generally have about 90 to 120 minutes to complete this section.
  • The Practical Exam: This timed portion requires you to demonstrate your proficiency in a live setting. You will perform specific services, such as a client consultation, setup and sanitation, and the application of eyelash extensions on either a mannequin head or a live model. State board proctors will observe and score your technique, focus, and adherence to safety and infection control standards.

A passing score (typically 70% or higher) is required on both sections to obtain your license.


How to Study and Exam Centers

Successful students utilize a mix of studying techniques to prepare for this comprehensive exam.

Study Strategies:

  • Utilize a Practice Exam: Regularly taking practice tests is crucial for familiarizing yourself with the format and types of questions asked on the written exam. This helps identify knowledge gaps.
  • Focus on Sanitation: This is the most critical component of the practical exam. Practice setting up your station and performing hand hygiene flawlessly until it becomes second nature.
  • Mannequin Practice for Speed: The practical exam is timed. Consistently practice applying lash extensions on a mannequin head to improve your isolation technique and application speed while maintaining quality.
  • Study Official State Board Materials: Review the specific candidate information bulletin provided by your state licensing board (e.g., PSI Services), as it details the exact rubric used by proctors during the practical exam.

Exam Centers:

The written exam is typically administered at official, computer-based testing centers managed by state-approved vendors, such as PSI or Pearson VUE. These centers have locations throughout the state.

The practical exam often takes place at designated state board testing sites or sometimes within approved beauty schools that have the appropriate proctoring setup.


Job Opportunities from the Course

Obtaining your 320-Hour Lash Specialty License opens up diverse career paths in the beauty industry. Potential job titles include:

  • Licensed Lash Stylist / Lash Artist: Working in specialized lash salons or full-service beauty salons.
  • Medical Spa Lash Specialist: Providing services in a medical spa setting alongside other esthetic treatments.
  • Mobile Lash Technician / Salon Suite Owner: Operating an independent business, offering mobile services, or renting a private salon suite.
  • Lash Educator or Instructor: Teaching lash application techniques at accredited beauty schools after gaining professional experience.
  • Brand Ambassador or Product Educator: Working for lash supply companies to train other professionals on new products and techniques.

This specialty license provides a focused route to a specialized, high-demand career in the beauty industry.

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