CWT Safety Procedures & Compliance 4

Question 1

Which type of test weight class is required for testing Class III commercial scales with a capacity of 500 lb?

Accepted Answer

Weights meeting NIST Class F or better tolerances

Answer

NIST Handbook 105-1 specifies that test weights used for Class III device verification must meet Class F tolerance requirements or better.

Question 2

When a CWT encounters a scale that displays weight in a non-approved unit of measure for a given commodity transaction, the correct action is to:

Accepted Answer

Reject certification because unapproved units violate NIST HB 44 requirements

Answer

NIST HB 44 specifies which units of measure are approved for each type of commercial transaction; non-approved units are grounds for rejection.

Question 3

During a calibration of a crane scale at height, the technician should ensure which safety measure is in place?

Accepted Answer

Anti-fall protection is worn and the swing radius below is barricaded

Answer

Working at elevation requires fall protection for the technician and barricading the swing radius below to protect ground-level personnel from falling objects.

Question 4

What is the significance of the 'maintenance tolerance' versus the 'acceptance tolerance' in NIST HB 44?

Accepted Answer

Maintenance tolerance is more lenient and applies to devices already in service

Answer

Maintenance tolerances are twice as lenient as acceptance tolerances and apply to devices already in commercial service, while acceptance tolerances apply to new or repaired devices.

Question 5

A CWT is testing a scale in a flour mill where combustible dust is present. Which safety requirement applies to all electrical equipment brought in?

Accepted Answer

Equipment must be rated for use in Class II, Division 1 or 2 hazardous locations

Answer

Combustible dust environments are classified as Class II hazardous locations under the NEC, requiring explosion-proof or dust-ignition-proof rated equipment.

(CWT) Certified Weighing Technician Practice Test

(CWT) Certified Weighing Technician Practice Test

CWT Safety Procedures & Compliance 4