18.3 Employer-Specific Topics and Written-Practice Controls

The ASNT NDT Level II visual general exam lists Employer-specific Topics as official VT topic 10. That heading is easy to skip because it does not sound like optics or undercut. It is on the outline because ASNT central certification does not finish the job. The 50-question general and 40-question specific exams are computer-based tests of written knowledge. The employer still owns the pieces that put a named person on a named weld with a named procedure: the written practice, visual acuity, the practical, any job-specific exam, unique acceptance, product aids, hold points, traveler sign-off, and the safety rules of that shop.

If you treat the digital badge as a universal stamp that lets you inspect for any company on any procedure, you will fail a customer audit and you will miss topic-10 items. If you treat the employer's practical and vision check as optional because "ASNT already tested me," you are not a finished Level II under that written practice.

What a written practice still controls after central CBT

A written practice is the employer's documented procedure that implements SNT-TC-1A or ANSI/ASNT CP-189. Chapter 2 of this guide covers the program rules. Topic 10 asks you to apply them to VT work.

ASNT states that employers remain responsible for visual acuity, practical, and any job-specific examinations their written practice requires to finish certification. Pearson VUE does not administer a Jaeger chart, a fillet-gauge practical, or a shop procedure quiz. Passing VT general and a sector-specific paper proves you can read about visual testing. It does not prove you can use this employer's gauges on this product to this acceptance table under this lighting procedure.

Typical written-practice controls a VT Level II lives with every shift:

Vision recertification interval is a written-practice number, not an ASNT CBT setting. Many SNT-TC-1A and CP-189 programs re-examine near vision on a periodic cycle defined in that practice — often annually in the programs you will actually work under. Color-contrast checks follow the practice, not a universal Ishihara mandate invented as an ASNT secret. Fail the employer vision check and you stop inspecting for that employer, regardless of the date on the digital badge. The ASNT credential's 5-year validity is not the vision interval.

Unique acceptance and product-specific aids

Unique acceptance is why two shops welding to the same construction code still hand you different visual limits. Examples a topic-10 item can use without turning them into fake AWS numbers:

• A paint-critical structure that allows no undercut even when the invoked AWS table would allow some depth
• A sanitary or food-grade tube that requires a blended internal bead and rejects pits the piping code would evaluate by size
• A pipeline owner that requires a photograph of every tie-in in addition to the API 1104 visual cells
• A pressure-equipment customer that bans arc strikes on the pressure boundary and requires blend-and-VT of any that occur
• A coating specification that adds a surface-profile or cleanliness look after the weld visual is already signed

The Level II does not negotiate those extras on the floor. They are either in the procedure / ITP or they are a question for the Level III.

Product-specific aids are the tools and references that make that unique acceptance measurable:

• Fillet-weld gauges, undercut / V-WAC gauges, high-low or mismatch gauges, reinforcement or cam gauges
• Workmanship photo cards or replica standards the customer approved
• Listed remote systems (borescope, camera, measuring tip) with the resolution check the procedure names
• Light meters when the procedure requires a recorded illumination
• Joint maps, clock-position cards, and traveler sketches printed for that vessel or skid

Use the aid the procedure lists. A homemade notch ground into a scrap coupon is not a calibrated undercut gauge. A phone photo of last year's acceptable weld is not a workmanship standard unless the written practice and the customer say it is. Photo cards illustrate a table; they do not replace the table. If the card and the measured depth disagree, the measured value against the printed cell wins, and you elevate if the card is the only acceptance the customer will discuss.

Measuring aids that the written practice treats as inspection equipment may need a verification or calibration status. Topic 10 will ask whether you may use a gauge with an expired sticker. The answer is the written practice: if the practice requires a current verification, the expired gauge is out of service.

Hold points and traveler sign-off

Hold points were introduced in topic 8 as evaluation timing. Topic 10 is about control. The traveler, router, or inspection and test plan is the employer's record that a named person completed a named examination before the next operation hid the surface.

Rules that show up as employer-specific items:

• Sign only the hold point you performed, after the examination is complete and the required report exists.
• Record date, identification, procedure revision, and accept / reject / hold. A signature with no disposition is an incomplete record.
• Do not sign ahead so welding can roll. Do not sign for a coworker. Do not sign a block you could not access.
• Electronic travelers still need unique identification. Sharing a login is the same violation as signing someone else's name.
• A reject or hold stops that operation. Production pressure is not a written-practice revision.

If a hold point is inaccessible — insulation already on, the next pass already in, the vessel closed — you do not invent a visual from the platform and you do not mark "N/A" to clear the traveler. You elevate. The Level III or the responsible quality organization decides whether a concession, a reopen, or a different method is allowed. That decision is not a Level II field modification.

Safety that is part of VT, not a side brief

Visual testing puts people next to open vessels, on scaffolds, under grinders, and inside tanks with a drop light. Topic 10 treats those as examination controls because an unsafe setup produces both injuries and bad visual data.

Confined space. Many final and in-service VT hold points are inside permit-required confined spaces. You do not enter because the traveler is red. You enter when the permit, atmosphere checks, attendant, and rescue plan the employer named are in place. Remote VT is a technique choice when the procedure allows it and when sending a camera is the safe way to meet the hold point. Remote VT is not a way to skip a required direct visual if the procedure still demands direct access — in that case you get a safe entry or you elevate the conflict.

Heights. Vessel heads, tower skirts, and structural steel put the eye where the weld is. Fall protection, scaffold tags, and lift permits are employer rules. They also affect viewing angle. A Level II hanging at a bad angle to avoid tying off is performing out-of-procedure VT and violating safety. Get the access equipment the procedure assumed when it wrote Article 9-style distance and angle rules.

Grinding debris and concurrent hot work. Fresh grinding dust is an eye and face hazard. It also creates false lines and hides undercut. Falling slag from a welder overhead is the same problem. Stop or postpone VT until the debris and the arc are controlled. More flashlight does not cancel a grinding stream. Coordination with welding and finishing is part of the examination, not a courtesy.

Related employer safety that can appear in a stem: inadequate temporary lighting that is both a technique failure and a trip hazard; chemical cleaners used to dismiss a false stain; electrical tools inside a vessel; UV from an unscreened welding arc while you stare at a toe. The correct first action is the stop-work the written practice already requires, then a return to the hold point when the condition is controlled.

What a Level II may not change without a Level III

The Level II interprets and evaluates in accordance with the approved procedure. The Level III (or the procedure owner the written practice names) establishes the technique and the acceptance. Topic 10 will hand you a tempting floor improvement and ask who is allowed to make it.

"Improving" lighting below a printed minimum, moving closer than a listed maximum because the weld is hard to see, or accepting a geometric over-limit "this once" are all procedure changes. They are not initiative. Elevate, get a revision or a written disposition, then continue.

Tying it back to ASNT central certification

Hold the three schemes distinct, the same way Chapter 2 taught them, because topic 10 will mix them with a VT traveler.

• SNT-TC-1A and CP-189 programs: the employer issues the shop certification and owns vision, practical, and job-specific examinations.
• ASNT NDT Level II central certification: ASNT issues the written general and specific credential when you pass the CBT. The employer still performs vision, practical, and any additional job-specific piece the written practice requires before you sign production VT.

You can hold a current ASNT VT badge and still be unauthorized to inspect for a second employer whose written practice has not yet administered its vision check and its practical on its product-specific aids. You can also hold the badge and be suspended on the shop floor the day your annual near-vision check fails. That is not a contradiction. That is the design of the program.

Realistic exam scenarios

A stem gives a current ASNT VT badge and a new employer: vision and practical (and any job-specific exam) are still required before production sign-off. A stem offers a Level II who wants to raise the undercut limit to match last week's job: that is a Level III / procedure-owner change. A stem puts the hold point inside a permit-required space with grinding debris falling: do not enter, do not sign inaccessible to dodge the permit, get the space and the debris under control. A stem shows an expired fillet gauge and a photo card that disagrees with a measured depth: follow the written practice on equipment status, and apply the measured value to the printed table. A stem asks whether the 5-year ASNT expiration is the vision recert date: it is not; the written practice sets the vision interval.