PDFWAC 296-155-375
Jacks—Lever and ratchet, screw, and hydraulic.
General requirements.
(1) The manufacturer's rated capacity must be legibly marked on all jacks and you must not exceed this capacity.
(2) All jacks must have a positive stop to prevent over-travel.
(3) Specially designed jacks constructed for specific purposes must meet the approval of the department of labor and industries before being placed in service.
(4) Control parts must be so designed that the operator will not be subjected to hazard.
(5) Blocking. When it is necessary to provide a firm foundation, you must block or crib the base of the jack. Where there is a possibility of slippage of the metal cap of the jack, you must place a wood block between the cap and the load.
(6) Operation and maintenance.
(a) After the load has been raised, you must immediately crib, block, or otherwise secure it.
(b) You must supply hydraulic jacks exposed to freezing temperatures with an adequate antifreeze liquid.
(c) You must properly lubricate all jacks at regular intervals. You should follow the lubricating instructions of the manufacturer, and only lubricants recommended by the manufacturer should be used.
(7) You must thoroughly inspect each jack at times which depend upon the service conditions. You must perform inspections at least as frequently as the following:
(a) For constant or intermittent use at one locality, once every 6 months;
(b) For jacks sent out of shop for special work, when sent out and when returned;
(c) For a jack subjected to abnormal load or shock, immediately before and immediately thereafter.
(8) You must examine repair or replacement parts for possible defects.
(9) You must tag jacks which are out of order accordingly, and you must not use them until repairs are made.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-375, filed 4/19/16, effective 5/20/16. Statutory Authority: Chapter 49.17 RCW. WSR 94-15-096 (Order 94-07), § 296-155-375, filed 7/20/94, effective 9/20/94; WSR 93-04-111 (Order 92-15), § 296-155-375, filed 2/3/93, effective 3/15/93; WSR 91-11-070 (Order 91-01), § 296-155-375, filed 5/20/91, effective 6/20/91; Order 74-26, § 296-155-375, filed 5/7/74, effective 6/6/74.]