34 Pa. Code § 39.384
When the switches and disconnectors designated have been opened, blocked, and tagged in accordance with § 39.383 (relating to opening disconnectors and tagging), the chief operator shall require each person operating them to make protective grounds in accordance with §§9.401-39.405 upon the lines being killed and to report to him when such grounds are in place.
34 Pa. Code § 39.384
This section cited in 34 Pa. Code § 39.339 (relating to fire extinguishers); 34 Pa. Code § 39.353 (relating to special authorization); 34 Pa. Code § 39.367 (relating to when to kill parts); 34 Pa. Code § 39.381 (relating to general provisions); 34 Pa. Code § 39.411 (relating to general provisions); 34 Pa. Code § 39.421 (relating to general provisions); 34 Pa. Code § 39.431 (relating to general provisions); 34 Pa. Code § 39.441 (relating to general provisions); 34 Pa. Code § 39.451 (relating to general provisions; and 34 Pa. Code § 39.461 (relating to general requirements).