256.11 Interior inspections-waterless holders.

(a)Interior inspections shall be made at least once a week and shall in general comprise the following:#

Inspection of skylight glass on holder top.#

Inspection of lenses in flood lights.#

Examination of tar in seal to detect presence of oil and water.#

Inspection of piston guide rollers, rubbing bars, and levers for proper lubrication and freedom of movement.#

Inspection of sealing or packing rings.#

Measuring position of piston to determine piston level.#

Inspection of motors, drums, cables, sheaves, safety baskets, and lubrication of motor elevator and hand operated elevator.#

(b)The depth of cup tar in each alternate bay shall be measured daily. If the atmospheric temperature is below 26 degrees Farenheit, the condition of tar in seal shall be examined at least every day. The tar in the cup and dam shall be sampled and analyzed at least once a week. When the piston of a waterless holder is of the flexible seal ring type an adequate supply of suitable anti-freeze liquid shall be stored on the piston to insure the prompt removal of any frost and ice that may form on the inner surface of the shell during cold weather.#