Chapter 296-24 General safety and health standards.

(1) You must ensure that all timbers for "A" frames are of correct size, length, and condition to sustain the maximum contemplated loads.(2) You must ensure that "A" frame timbers are braced with two spreaders spaced one-quarter the length of the "A" frame from each end. Cross br…

[Order 73-5, § 296-24-294, filed 5/9/73 and Order 73-4, § 296-24-294, filed 5/7/73.]

(1) Safe loads. Whenever used in connection with work, employment, occupations or uses to which these standards are applicable, you must not subject wire rope to loads in excess of 1/5th the breaking load as given in the schedule of the cable manufacturer. Except as required in s…

(1) Quality. Whenever hemp rope is used it must be first grade long fiber Manila hemp rope.(2) Strength. You must ensure that rope is not used to support loads in excess of those given in table for hemp and Manila rope.(3) Lashed. You must ensure that supporting ropes are double …

(1) Inspection. You must inspect all rope slings thoroughly and regularly at intervals of not more than one month, and when not in use, must be stored in a dry place.(2) Pads. You must protect rope slings with pads or blocks when wrapped around sharp edges of structural shapes, c…

You must ensure that guy wires and ropes are of sufficient strength to carry the load imposed upon them and that they are securely fastened in place.[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 15-24-100, § 296-24-29407, filed 12/1/15, effective 1…

Wherever rope is permanently fastened by a single wrap to a metal object less in diameter or shortest measurement than three times the diameter of the rope, you must insert a galvanized thimble (of size intended for the rope) between the object and the loop of the rope.[Statutory…

You must carefully inspect blocks and falls before being used. You must ensure that blocks are of substantial construction and maintained in good condition while in use. You must ensure that blocks fit the sizes of ropes they carry and do not chafe or abrade the ropes running thr…

(1) You must discard any three foot length of chain if at any time it is found to have stretched 1/3rd the length of a link.(2) You must not place bolts or nails between two links to shorten chains.(3) You must not splice broken chains by inserting a bolt between two links with t…

This section applies to slings used in conjunction with other material handling equipment for the movement of material by hoisting, in employments covered by this chapter. The types of slings covered are those made from alloy steel chain, wire rope, metal mesh, natural or synthet…

Angle of loading. The inclination of a leg or branch of a sling measured from the horizontal or vertical plane as shown in Fig. D-5: Provided, That an angle of loading of five degrees or less from the vertical may be considered a vertical angle of loading.Basket hitch. A sling co…

Whenever any sling is used, you must observe the following practices:(1) You must not use slings that are damaged or defective.(2) You must ensure that slings are not shortened with knots or bolts or other makeshift devices.(3) You must ensure that sling legs are not kinked.(4) E…

Each day before being used, you must ensure that the sling and all fastenings and attachments are inspected for damage or defects by a competent person designated by the employer. Additional inspections must be performed during sling use, where service conditions warrant. You mus…

(1) Sling identification. You must ensure that alloy steel chain slings have permanently affixed durable identification stating size, grade, rated capacity and reach.(2) Attachments.(a) You must ensure that hooks, rings, oblong links, pear shaped links, welded or mechanical coupl…

(1) Sling use. You must use only wire rope slings that have permanently affixed and legible identification markings as prescribed by the manufacturer, and that indicate the recommended safe working load for the type(s) of hitch(es) used, the angle upon which it is based, and the …

(1) Sling marking. You must ensure that each metal mesh has permanently affixed to it a durable marking that states the rated capacity for vertical basket hitch and choker hitch loadings.(2) Handles. You must ensure that handles have a rated capacity at least equal to the metal f…

(1) Sling use.(a) You must use natural and synthetic fiber rope slings that have permanently affixed and legible identification markings stating the rated capacity for the type(s) of hitch(es) used and the angle upon which it is based, type of fiber material, and the number of le…

(1) Sling identification. You must mark or code each sling to show the rated capacities for each type of hitch and type of synthetic web material.(2) Webbing. You must ensure that synthetic webbing is of uniform thickness and width and selvage edges are not split from the webbing…

[Order 73-5, § 296-24-295, filed 5/9/73 and Order 73-4, § 296-24-295, filed 5/7/73.]

You must determine that compressed gas cylinders under your control are in a safe condition to the extent that this can be determined by visual inspection. You must conduct visual and other inspections as prescribed in the hazardous materials regulations of the department of tran…

You must ensure that the in-plant handling, storage, and utilization of all compressed gases in cylinders, portable tanks, rail tankcars, or motor vehicle cargo tanks is in accordance with Compressed Gas Association Pamphlet P-1-1965.[Statutory Authority: RCW 49.17.010, 49.17.040…

You must ensure that compressed gas cylinders, portable tanks, and cargo tanks have pressure relief devices installed and maintained in accordance with Compressed Gas Association Pamphlets S-1.1-1963 and 1965 addenda and S-1.2-1963.[Statutory Authority: RCW 49.17.010, 49.17.040, …

[Order 73-5, § 296-24-310, filed 5/9/73 and Order 73-4, § 296-24-310, filed 5/7/73.]

You must ensure that the in-plant transfer, handling, storage, and use of acetylene in cylinders comply with the provisions of CGA Pamphlet G-1-2009 (Acetylene) (Compressed Gas Association, Inc., 12th ed., 2009).[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17…

(1) You must comply with Chapter 9 (Acetylene Piping) of NFPA 51A-2006 (Standard for Acetylene Charging Plants) (National Fire Protection Association, 2006 ed., 2006).(2) When employers can demonstrate that the facilities, equipment, structures, or installations used to generate …

(1) You must ensure that facilities, equipment, structures, or installations used to generate acetylene or to charge (fill) acetylene cylinders comply with the provisions of NFPA 51A-2006 (Standard for Acetylene Charging Plants) (National Fire Protection Association, 2006 ed., 20…

[Order 73-5, § 296-24-315, filed 5/9/73 and Order 73-4, § 296-24-315, filed 5/7/73.]

(1) Definitions as used in this section.Approved. Unless otherwise indicated, listed or approved by a nationally recognized testing laboratory. Refer to federal regulation 29 C.F.R. 1910.7 for definition of nationally recognized testing laboratory.ASME. American Society of Mechan…

(1) Design.(a) Containers.(i) You must ensure that hydrogen containers comply with one of the following:(A) Designed, constructed, and tested in accordance with appropriate requirements of ASME Boiler and Pressure Vessel Code, Section VIII—Unfired Pressure Vessels—1968.(B) Design…

(1) Design.(a) Containers.(i) You must ensure that hydrogen containers comply with the following: Storage containers be designed, constructed, and tested in accordance with appropriate requirements of the ASME Boiler and Pressure Vessel Code, Section VIII—Unfired Pressure Vessels…

[Order 73-5, § 296-24-320, filed 5/9/73 and Order 73-4, § 296-24-320, filed 5/7/73.]

This section applies to the installation of bulk oxygen systems on industrial and institutional consumer premises. This section does not apply to oxygen manufacturing plants or other establishments operated by the oxygen supplier or supplier's agent for the purpose of storing oxy…

(1) Definitions. As used in this section: A bulk oxygen system is an assembly of equipment, such as oxygen storage containers, pressure regulators, safety devices, vaporizers, manifolds, and interconnecting piping, which has storage capacity of more than 13,000 cubic feet of oxyg…

You must ensure that the piped systems for the in-plant transfer and distribution of nitrous oxide are designed, installed, maintained, and operated in accordance with Compressed Gas Association Pamphlet G8.1-1964.[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.…

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and 29 C.F.R. 1910 Subpart Z. WSR 14-07-086, § 296-24-330, filed 3/18/14, effective 5/1/14; Order 73-5, § 296-24-330, filed 5/9/73 and Order 73-4, § 296-24-330, filed 5/7/73.]

The following definitions are applicable to all sections of this chapter which include WAC 296-24-330 in the section number.Aerosol. A material which is dispensed from its container as a mist, spray, or foam by a propellant under pressure.Approved. Unless otherwise indicated, app…

This section applies to the handling, storage, and use of flammable liquids with a flash point at or below 199.4°F (93°C). This section does not apply to:(1) Bulk transportation of flammable liquids;(2) Storage, handling, and use of fuel oil tanks and containers connected with oi…

(1) Design and construction of tanks.(a) Materials.(i) Tanks must be built of steel except as provided in (a)(ii) through (v) of this subsection.(ii) Tanks may be built of materials other than steel for installation underground or if required by the properties of the liquid store…

(1) General.(a) Design. The design (including selection of materials) fabrication, assembly, test, and inspection of piping systems containing flammable liquids must be suitable for the expected working pressures and structural stresses. Conformity with the applicable provisions …

(1) Scope.(a) General. This section must apply only to the storage of flammable liquids in drums or other containers (including flammable aerosols) not exceeding 60 gallons individual capacity and those portable tanks not exceeding 660 gallons individual capacity.(b) Exceptions. …

(1) Scope.(a) Application. This section applies to those industrial plants where:(i) The use of flammable liquids is incidental to the principal business, or(ii) Where flammable liquids are handled or used only in unit physical operations such as mixing, drying, evaporating, filt…

(1) Storage.(a) Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C). You must store Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C), in closed containers, or in storage…

(1) Storage and handling.(a) General provisions.(i) You must store liquids in approved closed containers not exceeding 60 gallons capacity, in tanks located underground, in tanks in special enclosures as described in (b) of this subsection, or in aboveground tanks as provided for…

(1) Scope. This section applies to those plants or buildings which contain chemical operations such as oxidation, reduction, halogenation, hydrogenation, alkylation, polymerization, and other chemical processes but does not apply to chemical plants, refineries or distilleries.(2)…

(1) Storage tanks. You must store flammable liquids in tanks, in containers, or in portable tanks. You must install tanks in accordance with WAC 296-24-33005. You must locate tanks for the storage of flammable liquids in tank farms and in locations other than process areas in acc…

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060 and 29 C.F.R. 1910 Subpart Z. WSR 14-07-086, § 296-24-370, filed 3/18/14, effective 5/1/14; Order 73-5, § 296-24-370, filed 5/9/73 and Order 73-4, § 296-24-370, filed 5/7/73.]

Aerated solid powders. Aerated powders shall mean any powdered material used as a coating material which shall be fluidized within a container by passing air uniformly from below. It is common practice to fluidize such materials to form a fluidized powder bed and then dip the par…

(1) Construction. Spray booths must be substantially constructed of steel, securely and rigidly supported, or of concrete or masonry except that aluminum or other substantial noncombustible material may be used for intermittent or low volume spraying. Spray booths must be designe…

(1) Conformance. All electrical equipment, open flames and other sources of ignition must conform to the requirements of this section, except as follows:(a) Electrostatic apparatus must conform to the requirements of WAC 296-24-37015 and 296-24-37017.(b) Drying, curing, and fusio…

(1) Conformance. Ventilating and exhaust systems must be in accordance with the Standard for Blower and Exhaust Systems for Vapor Removal, NFPA No. 91-1961, where applicable and must also conform to the provisions of this section.(2) General. You must provide all spraying areas w…