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API-936 exam covers a broad spectrum of topics related to refractory materials, including types of refractory materials, installation and design principles, inspection techniques, and repair methods. API-936 examination is designed to test the candidate's knowledge and practical application of refractory principles in various industrial settings. API-936 Exam consists of 120 multiple-choice questions and is administered in a computer-based format.
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API-936 (Refractory Personnel) Certification Exam is a certification program designed for individuals who work with refractories in industries such as petrochemical, chemical, and power generation. Refractory Personnel certification is recognized globally by employers as a standard of excellence in the refractory industry. It is offered by the American Petroleum Institute (API), which is a leading trade association for the oil and gas industry.
NEW QUESTION # 36
The maximum angle permitted for gunning below the horizontal is:
Answer: D
Explanation:
According to API Std 936, when applying refractory via pneumatic gunning, the angle below the horizontal must be controlled to avoid rebound and poor bonding.
"For downward gunning, the maximum angle below the horizontal shall be 30°."
- API Std 936, Section 6.6.2.1
This restriction ensures proper adherence and consolidation of refractory materials.
NEW QUESTION # 37
Heating the new refractory too rapidly will cause
Answer: B
NEW QUESTION # 38
For the qualification of the applicator/installer, they shall demonstrate their ability to install the refractory:
Answer: D
Explanation:
API 936 clearly states that applicators/installers must be qualified to demonstrate the ability to install refractory linings in accordance with the specified project quality standards. This includes using the correct methods, achieving proper material density, and avoiding defects like voids and laminations.
Reference:API Std 936, Section 4.2 - Installer Qualifications: "Installers shall demonstrate their ability to install the refractory system to meet the specified quality standards prior to beginning production work."
NEW QUESTION # 39
Which of the following steps are required to apply to thin-layer erosion-resistant linings?
(This may have more than one correct answer; please select all answers that apply.)
Answer: B,C,D
Explanation:
According to API TR 980, specific practices are required during the installation of erosion-resistant refractory linings:
"Thin-layer linings shall be installed so that overfill is trimmed flush to the hexmetal..."
"Mixing procedures, including mix times and water ratios, shall be defined during material qualification testing..."
"The refractory shall be fully compacted in and around the anchor supports."
- API TR 980, Section 4.3.2
Additionally, slicking (Option A) is not permitted as it interferes with mechanical bond development.
NEW QUESTION # 40
Surface preparation and welding procedures are the responsibility of the:
Answer: C
Explanation:
According to API Std 936 - Refractory Installation Quality Control, the roles and responsibilities of each party are clearly defined. Specifically, it states:
"The contractor shall be responsible for... the preparation of the surface prior to lining, and the quality of the workmanship, including the welding of anchors and any required preheat or post-weld heat treatment."
- API Std 936, Section 5.3.1, Contractor Responsibilities
Therefore, surface preparation and welding activities, including anchor welding, fall under the Contractor's scope of work. The inspector's role is to verify compliance, not to execute procedures.
NEW QUESTION # 41
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