SMSTS Technical Standards and Specifications 3

Question 1

Under OSHA's Hazard Communication Standard (29 CFR 1910.1200), how many hazard categories does the GHS system define for flammable liquids?

Accepted Answer

4

Answer

GHS classifies flammable liquids into 4 categories based on flash point ranges, with Category 1 being most hazardous (flash point below 23°C and boiling point ≤35°C).

Question 2

What standard governs the design and use of falsework (temporary support structures for concrete formwork) in the United States?

Accepted Answer

ANSI A10.9

Answer

ANSI A10.9 (Safety Requirements for Concrete and Masonry Work) covers falsework design, erection, use, and removal requirements on US construction sites.

Question 3

When is a Permit-to-Work system legally required on construction sites under OSHA regulations?

Accepted Answer

For confined space entry, hot work, and lockout/tagout activities

Answer

OSHA mandates written permit systems specifically for confined space entry (1926.1203), hot work, and energy control (lockout/tagout) procedures on construction sites.

Question 4

Per NFPA 241, what minimum fire extinguisher rating is required for general construction site use protecting combustible materials?

Accepted Answer

2-A

Answer

NFPA 241 requires a minimum 2-A rated extinguisher for ordinary combustibles in construction areas, ensuring adequate extinguishing capacity.

Question 5

Under ASME B30.5, what is the maximum allowable wind speed for operating a mobile crane?

Accepted Answer

30 mph

Answer

ASME B30.5 specifies that crane operations should cease when wind speeds exceed 30 mph, though manufacturer specifications may require lower limits.

(SMSTS) Site Management Safety Training Scheme Practice Test

(SMSTS) Site Management Safety Training Scheme Practice Test

SMSTS Technical Standards and Specifications 3