§ 39.542. Testing for gas.
(a) Employes shall not enter manholes until they have ascertained that such manholes are free from dangerous gases, as indicated by approved safety lamps, by ventilation, or by other adequate methods.
(b) When work is being carried on in manholes for any length of time where gas collects, suitable ventilation shall be provided or tests with the safety device should be repeated at regular intervals to make certain that gas is not accumulating in the manhole in dangerous quantities.
Cross References This section cited in 34 Pa. Code § 39.433 (relating to testing for gas); and 34 Pa. Code § 39.501 (relating to general requirements).
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