Canada Occupational Health and Safety Regulations

11.12 The employer shall, at the employer’s place of business nearest to the work place in which the confined space is located, keep a written copy or a machine-readable version of

• (a) any report made pursuant to subsection 11.2(2) and the procedures established pursuant to paragraphs 11.3(a) and 11.5(1)(a) for a period of ten years after the date on which the qualified person signed the report or the procedures were established; and

• (b) any report made pursuant to subsection 11.4(2)

  • (i) for a period of ten years after the date on which the qualified person signed the report where the verification procedures undertaken pursuant to paragraphs 11.4(1)(a) and (c) indicate that the specifications set out in subparagraphs 11.4(1)(a)(i) to (iii) were not complied with, and

  • (ii) in every other case, for a period of two years after the date on which the qualified person signed the report.