Nevada A-23 Asbestos Contractor Examination

Under the Nevada State Contractors Board A-23 classification, which work is within the asbestos contractor's licensed scope?

• ACleaning, handling, repair, removal, encapsulation, enclosure, hauling, and disposal of a…
• BInspecting schools and writing AHERA management plans only
• CIssuing the Nevada Division of Environmental Protection asbestos worker card
• DDesigning new fireproofing that contains chrysotile

Under OSHA 29 CFR 1926.1101, asbestos-containing material (ACM) is any material that contains more than what percentage of asbestos?

• A0.1 percent
• B0.5 percent
• C1 percent
• D5 percent

Presumed asbestos-containing material (PACM) under 29 CFR 1926.1101 is which of the following in buildings constructed no later than 1980?

• AThermal system insulation and surfacing material
• BOnly vinyl floor tile and asphalt roofing
• CAny painted surface installed before 1978
• DOnly sprayed fireproofing that has already been sampled

Class I asbestos work under OSHA 1926.1101 is activities involving which of the following?

• ARemoval of thermal system insulation and surfacing ACM and PACM
• BRemoval of floor tile, roofing, and siding that are not TSI or surfacing
• CRepair that may disturb a small amount of ACM
• DCustodial contact with ACM that is not disturbed

Removing asbestos-containing floor tile, roofing shingles, or construction mastic is classified as which OSHA work class?

• AClass II
• BClass I
• CClass III
• DClass IV

A plumber cuts a small damaged section of pipe insulation that fits in one 60-by-60-inch waste bag. OSHA classifies this as which work?

• AClass I removal because the material is TSI
• BClass II removal because the quantity is small
• CClass III repair and maintenance because ACM, including TSI, is likely to be disturbed in…
• DClass IV because the worker is not an abatement contractor

After Class I removal, janitorial staff wipe residual dust and bag debris without disturbing remaining ACM. That activity is:

• AClass I because it follows Class I work
• BClass II because dust is being removed
• CClass III because waste is being handled
• DClass IV maintenance and custodial work, including cleanup of dust, waste, and debris fro…

What is the OSHA permissible exposure limit (PEL) for asbestos as an 8-hour time-weighted average under 29 CFR 1926.1101?

• A0.1 fiber per cubic centimeter
• B0.01 fiber per cubic centimeter
• C1.0 fiber per cubic centimeter
• D2.0 fibers per cubic centimeter

What is the OSHA excursion limit for asbestos?

• A0.1 f/cc as an 8-hour TWA
• B0.1 f/cc averaged over 30 minutes
• C1.0 f/cc averaged over a 30-minute sampling period
• D1.0 f/cc as an 8-hour TWA

Which minerals does OSHA 1926.1101 include in the definition of asbestos?

• AChrysotile, amosite, crocidolite, tremolite asbestos, anthophyllite asbestos, and actinol…
• BOnly chrysotile
• COnly amphibole asbestos used in shipyards
• DAny naturally occurring fiber longer than 5 micrometers

Under EPA NESHAP, friable ACM is material containing more than 1 percent asbestos that, when dry, can be:

• ACrumbled, pulverized, or reduced to powder by hand pressure
• BCut with a power saw
• CWetted with amended water
• DEnclosed behind new drywall

For Class I and Class II asbestos work, OSHA's competent person must, in addition to 1926.32(f) authority, be trained in a course that meets which criteria?

• AEPA Model Accreditation Plan supervisor training, or its equivalent
• BA 2-hour asbestos awareness briefing
• CA first-aid and CPR card only
• DAny OSHA 10-hour construction course

An employer must establish a regulated area for which of the following?

• AClass I, II, and III asbestos work, adjoining debris areas, and any work area where airbo…
• BOnly indoor Class I jobs larger than 160 square feet
• COnly jobs that fail a clearance sample
• DOnly when the building owner requests it

Inside an asbestos regulated area, which activities does OSHA prohibit?

• AUsing wet methods
• BWearing a respirator
• CEating, drinking, smoking, chewing tobacco or gum, or applying cosmetics
• DPosting danger signs

On a multi-employer construction site that includes A-23 asbestos work, what duty does OSHA place on the general contractor?

• ANone, because only the asbestos contractor is covered
• BThe general contractor must serve as the asbestos competent person
• CThe general contractor exercises general supervisory authority, must ascertain whether th…
• DThe general contractor only files the NESHAP notice

Under EPA asbestos NESHAP (40 CFR 61.145), how far in advance must a written original notification generally be submitted before a regulated demolition or renovation begins?

• A24 hours
• B3 working days
• C10 working days
• D30 calendar days

Which quantity of regulated asbestos-containing material (RACM) triggers NESHAP renovation notification and work-practice requirements?

• AAt least 260 linear feet on pipes, 160 square feet on other facility components, or 35 cu…
• BAny visible ACM, regardless of amount
• CAt least 25 linear feet or 10 square feet of TSI
• DAt least 1,000 square feet of any ACM

A facility is being demolished and a thorough inspection found no RACM. What NESHAP notice is still required?

• AA demolition notification is still required; demolitions are not excused merely because n…
• BNo notice, because there is no asbestos
• CNotice only if the building is a K-12 school
• DNotice only if the landfill asks for it

EPA asbestos NESHAP generally excludes which buildings from the definition of facility?

• AResidential buildings that have four or fewer dwelling units
• BAll commercial warehouses
• CAny building constructed after 1980
• DHospitals and nursing homes

An A-23 contractor is hired to remove surfacing ACM from a public K-12 school. Besides OSHA and NESHAP, which EPA rule also governs response actions in that building?

• AAHERA, 40 CFR 763 Subpart E, including accredited personnel and school clearance procedur…
• BOnly the Toxic Substances Control Act ban on all asbestos products
• CRCRA Subtitle C hazardous-waste manifesting for every bag
• DNo EPA school rule applies once an NSCB license is held

For OSHA asbestos air monitoring, a fiber is a particulate form of asbestos that is:

• AAny particle visible to the naked eye
• BShorter than 1 micrometer in every dimension
• C5 micrometers or longer with a length-to-diameter ratio of at least 3 to 1
• DAny dust particle captured on a 6-mil bag

A HEPA filter, as defined in 29 CFR 1926.1101, must trap and retain at least what fraction of 0.3-micrometer mono-dispersed particles?

• A95 percent
• B99 percent
• C99.97 percent
• D100 percent

Who must be placed in OSHA asbestos medical surveillance under 1926.1101(m)?

• AEvery construction employee on the site, including office staff
• BOnly employees who request an exam
• CEmployees who for 30 or more days per year do Class I, II, or III work or are exposed at…
• DOnly employees who have already been diagnosed with asbestosis

How long must an employer keep asbestos exposure-monitoring records under OSHA?

• A1 year
• B5 years
• CAt least 30 years
• DUntil the project warranty expires

Asbestos medical-surveillance records must be retained for:

• A90 days after the exam
• BOne year beyond the last date of employment
• CThe duration of employment plus 30 years
• DUntil the employee leaves the state

How long must an employer keep asbestos training records under 1926.1101?

• A30 years from the training date
• BEmployment plus 30 years
• COne year beyond the last date of employment by that employer
• DOnly until the current project ends

Which wording must OSHA 1926.1101(k)(7) warning signs that demarcate a regulated area bear?

• ACAUTION ASBESTOS AREA — HARD HATS REQUIRED
• BNOTICE — POSSIBLE DUST — NO SMOKING
• CDANGER / ASBESTOS / MAY CAUSE CANCER / CAUSES DAMAGE TO LUNGS / AUTHORIZED PERSONNEL ONLY
• DWARNING — LEAD AND ASBESTOS — RESPIRATORS OPTIONAL

Before an A-23 crew starts work, what communication duty does the building or facility owner have under 1926.1101(k)?

• ANone; only the contractor must identify ACM
• BPost a newspaper advertisement instead of notifying the contractor
• CNotify the contractor of the location and quantity of ACM and PACM known or assumed in th…
• DWait until after demolition to disclose ACM

The Nevada A-23 contractor examination is which credential?

• AThe NDEP/EPA AHERA asbestos worker or supervisor occupation card
• BA national EPA inspector accreditation exam administered by PSI
• CThe NSCB/PSI closed-book trade examination for the A-23 asbestos contractor classification
• DAn open-book CMS business-and-law examination

Which statement about commercial asbestos types is correct for contractor knowledge?

• AChrysotile is a serpentine mineral; amosite and crocidolite are amphiboles often associat…
• BAll asbestos used in U.S. buildings was crocidolite
• CChrysotile fibers cannot cause disease
• DAmosite is a man-made mineral fiber, not asbestos

Which health statement should an A-23 contractor treat as correct?

• AAsbestos disease usually appears within days of first exposure
• BOnly swallowing fibers, not inhaling them, causes disease
• CInhaled asbestos can cause asbestosis, lung cancer, and mesothelioma, often after a laten…
• DShort-term construction exposures cannot cause cancer

A negative initial exposure assessment under 1926.1101 means the competent person has demonstrated that:

• ANo ACM is present in the building
• BThe landfill accepted the first waste load
• CEmployee exposure during the operation is expected to be consistently below the PELs, usi…
• DEvery worker has an AHERA card

After receiving asbestos monitoring results, when must the employer notify affected employees?

• AWithin 5 working days, individually in writing or by posting in an accessible location
• BOnly if a PEL is exceeded
• CWithin 90 days, and only to the union steward
• DNever; results are confidential to management

Which respirator does OSHA prohibit for required asbestos work?

• AA half-mask elastomeric air-purifying respirator with HEPA filters
• BA full-facepiece supplied-air respirator in pressure-demand mode
• CA tight-fitting PAPR with HEPA filters
• DA disposable filtering-facepiece dust mask

Under 29 CFR 1910.134 Table 1, what assigned protection factor (APF) does OSHA give a half-mask air-purifying respirator?

• A5
• B1,000
• C50
• D10

What APF does OSHA assign to a tight-fitting full-facepiece negative-pressure air-purifying respirator?

• A10
• B25
• C50
• D10,000

What APF does OSHA Table 1 assign to a tight-fitting full-facepiece powered air-purifying respirator (PAPR)?

• A10
• B50
• C1,000
• D10,000

What APF does OSHA assign to a full-facepiece self-contained breathing apparatus operated in pressure-demand or other positive-pressure mode?

• A50
• B1,000
• C5,000
• D10,000

For Class I work in a regulated area with no negative exposure assessment and an expected 8-hour TWA at or below 1 f/cc, OSHA 1926.1101(h) requires which respirator?

• AAny N95 filtering facepiece
• BA half-mask elastomeric respirator with P100 filters only
• CA tight-fitting PAPR, or a full-facepiece supplied-air respirator in pressure-demand mode…
• DNo respirator if wet methods are used

For Class I work with no negative exposure assessment and an expected TWA above 1 f/cc, which respirator must be provided?

• AA tight-fitting PAPR with HEPA filters
• BA full-facepiece air-purifying respirator with P100 filters
• CA full-facepiece supplied-air respirator operated in pressure-demand mode and equipped wi…
• DA half-mask PAPR

When must a half-mask air-purifying respirator other than a filtering facepiece, equipped with HEPA filters, be provided under 1926.1101(h)?

• AOnly during Class IV sweeping of clean floors
• BNever; half-masks are banned for all asbestos work
• COnly when the excursion limit is exceeded by a factor of 100
• DFor Class II and III jobs with no negative exposure assessment, and for Class III jobs th…

If an employee chooses a tight-fitting PAPR instead of the negative-pressure respirator selected under 1926.1101(h), what must the employer do?

• ARefuse, because PAPRs are never allowed
• BProvide it only for Class IV work
• CAllow it only if the employee buys the unit
• DProvide the PAPR when it provides adequate protection to the employee

How often must tight-fitting respirator fit testing be repeated under the 1910.134 program that 1926.1101 incorporates?

• AOnly once at hire
• BOnly after a failed user seal check
• CEvery 5 years
• DAt least annually, and whenever a different facepiece is used or a change could affect fit

When must a worker perform a user seal check on a tight-fitting respirator?

• AOnce a year during fit testing only
• BOnly if the filter is more than 30 days old
• COnly after showering out
• DEach time the respirator is put on

To pass a quantitative fit test (QNFT) under 1910.134, the minimum fit factor is:

• A10 for any respirator
• B10,000 for every air-purifying respirator
• C500 for a half mask and 100 for a full facepiece
• D100 for a half mask and 500 for a full facepiece

Qualitative fit testing (QLFT) may be used to fit-test a negative-pressure air-purifying respirator only when:

• AThe required fit factor is 100 or less, which in practice means a half-mask used at APF 10
• BThe worker will wear a full-facepiece APR at APF 50
• CThe worker will wear pressure-demand SCBA in an IDLH atmosphere
• DThe employer wants to skip medical evaluation

A worker arrives with a beard that breaks the face-to-facepiece seal. The competent person must:

• AAllow entry if the worker does a vigorous user seal check
• BIgnore the beard if the job is Class II
• CSwitch the worker to a filtering-facepiece dust mask
• DProhibit use of the tight-fitting respirator until the facial hair no longer interferes w…