- Study guides, Class notes & Summaries

1. Before refilling a customer's portable cylinder, the primary check for container requalification is to examine the: A. Water capacity stamp. B. Manufacturer's nameplate. C. Date of manufacture or last requalification. D. Type of service valve. Answer: C Rationale: The date of manufacture or the last requalification date is the critical piece of information to determine if the cylinder is still within its legal retest interval (typically 5 or 12 years). This is a core safety che...