ASTTBC Tech Exam common mistakes
ASTTBC Tech Exam · Understand the traps and how to avoid them.
Answering a regulatory question from memory of general provincial law or workplace habit instead of from the specific Act, regulation, or bylaw named in the question, such as confusing a building code requirement with an ASTTBC practice obligation.
Candidates often study technical content in depth and treat the legal framework as background reading, so they default to what they do on the job rather than what the governing statute or the association's rules actually require.
What to do instead
Build a one-page map of the legal hierarchy before studying details: statute, then regulation, then bylaw or code, then association policy. For each practice area you work in, write down which instrument governs it and who enforces it, and rehearse questions by first naming the governing instrument, then the rule, then the answer.
Choosing the answer that protects the client's immediate interest or the employer's schedule when the question describes a conflict between that interest and public safety, professional independence, or a statutory duty.
Real workplaces reward speed and client satisfaction, so candidates unconsciously apply a commercial decision rule to an ethics scenario that is testing the primacy of public welfare and professional judgement.
What to do instead
Practise a fixed decision sequence for every conduct scenario: identify who is at risk, identify the duty owed to the public, identify the duty owed to the client or employer, then choose the option that satisfies the public duty without abandoning the others. Drill this on scenarios involving pressure to sign off, skip testing, or alter a report.
Treating a signature, seal, or certification of documents as a routine administrative step, and selecting options where a technician signs off work they did not personally perform, supervise, or verify.
In practice, stamps and signatures are often handled as paperwork at the end of a project, so candidates underestimate that appending a seal is a personal professional assertion of competence and verification.
What to do instead
Learn the specific limits of your scope of practice and the meaning of a seal before exam day. For any question involving sign-off, ask three questions in order: was the work within my authorized scope, did I personally do or directly supervise it, and can I defend the underlying verification. If any answer is no, the correct option is to refuse, escalate, or refer to a qualified professional.
Confusing accuracy, precision, tolerance, and uncertainty, and reporting a measurement or calculation result with more significant figures or a tighter tolerance than the instrument and method can support.
Calculators and spreadsheets return many digits, and workplace reports often carry over those digits, so candidates lose the habit of tracking uncertainty through a calculation and rounding to what is justified.
What to do instead
Before any numerical question, state the instrument resolution and the stated tolerance, then propagate uncertainty through each operation and round only at the end. Practise distinguishing random from systematic error and identifying which one a described instrument fault produces.
Skipping the unit check and the dimensional sanity check, then selecting a numerically plausible answer that is wrong by a factor of a thousand, a factor of time, or a swapped unit such as gauge versus absolute pressure.
Exam pressure and time limits push candidates straight to the formula, and mixed units in a question stem are easy to overlook when the numbers look familiar.
What to do instead
Adopt a two-line habit for every calculation: convert all given values to consistent base units and write the unit beside each number, then check the final unit and the order of magnitude against physical intuition before looking at the options. If two options differ only by a power of ten, that is a signal to recheck the conversion.
Selecting a hazard control that relies on personal protective equipment or on warning signs when a higher-order control such as elimination, substitution, or engineering isolation is available in the scenario.
PPE is the most visible and familiar control, and many workplaces normalize it as the primary defence, so candidates rank controls by habit rather than by effectiveness.
What to do instead
Memorize the control hierarchy and apply it mechanically to every safety question: elimination, substitution, engineering control, administrative control, then PPE. When an option describes a guard, interlock, ventilation, or isolation, treat it as outranking any PPE or signage option unless the scenario makes it infeasible, in which case explain why in your reasoning.
Misreading a fault-finding or troubleshooting scenario by proposing a replacement or a major intervention before performing the basic verification steps such as confirming power, checking the sensor, or isolating the fault to a subsystem.
Experienced candidates pattern-match to the last similar failure they saw, and the exam rewards a systematic diagnostic sequence rather than the fastest plausible guess.
What to do instead
Use a fixed diagnostic script for every troubleshooting question: verify the reported symptom, check the simplest and most common causes first, divide the system to localize the fault, then confirm the repair by retest. Eliminate options that jump to component replacement or calibration without a stated verification step.
Answering documentation and communication questions by choosing the informal route, such as a verbal instruction, an undocumented field change, or a report that omits assumptions, limitations, and the basis of conclusions.
Day-to-day work runs on quick conversations and markup, so candidates undervalue the record-keeping that the exam treats as part of competent practice and accountability.
What to do instead
Treat every report or record question as a test of traceability. Look for the option that records what was done, by whom, when, with what instrument and calibration status, and what the conclusions rest on. Prefer written, dated, and acknowledged communication over verbal, and prefer options that disclose limitations over options that present results as unconditional.
Failing to recognize when a task exceeds the technician's scope and should be referred to an engineer or other licensed professional, instead choosing to proceed because the candidate has seen the task done informally.
Scope boundaries are rarely tested in daily work and are often blurred by habit and by employer expectations, so candidates do not have a clear internal line between technician practice and reserved engineering work.
What to do instead
Write out your scope of practice and the reserved activities in your jurisdiction, then classify common tasks into in-scope, out-of-scope, and in-scope-with-supervision. For scenario questions, choose the option that identifies the limit and refers or seeks supervision, and be suspicious of any option that expands your authority without a named qualified professional.
Treating a confidentiality, conflict-of-interest, or records question as a matter of courtesy, and disclosing information to a client, contractor, or authority without checking authorization, or accepting an assignment where a personal or financial interest exists without disclosure.
Information flows freely on projects and small firms have overlapping relationships, so candidates underestimate the formal duties of confidentiality, disclosure, and impartiality that the exam tests.
What to do instead
Apply a two-question filter to every ethics scenario: am I authorized to share this information with this recipient, and would a reasonable observer see a conflict here. If either answer is uncertain, the correct option is to decline, disclose, or seek guidance in writing rather than to act and explain later.