Chapter 296-307 Safety standards for agriculture.

(1) Class 1, Class 2, or Class 3 remote control, signaling, or power-limited circuits are characterized by their usage and electrical power limitation which differentiates them from light and power circuits. These circuits are classified according to their voltage and power limit…

(1) Fire protective signaling circuits must be classified either as nonpower limited or power limited.(2) The power sources for use with fire protective signaling circuits must be either power limited or nonlimited as follows:(a) The power supply of nonpower-limited fire protecti…

[WSR 97-09-013, recodified as § 296-307-376, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-376, filed 10/31/96, effective 12/1/96.]

WAC 296-307-376 applies to work performed on exposed live parts (involving either direct contact or contact by means of tools or materials) or near enough to them for employees to be exposed to any hazard they present.[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and…

Only qualified persons may work on electric circuit parts of equipment that have not been deenergized under the procedures of WAC 296-307-37807. Qualified persons must be capable of working safely on energized circuits and must be familiar with the proper use of special precautio…

When employees are working near energized electrical service conductors operating at 750 volts or less, employees must work in a manner to prevent contact with the energized conductors.[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 20-21-091, § 296-…

When a qualified person is working near overhead lines, whether in an elevated position or on the ground, the person must not approach, or take any conductive object without an approved insulating handle, closer to exposed energized parts than shown in WAC 296-307-150 unless:(1) …

(1) Any vehicle or mechanical equipment that may have parts of its structure elevated near energized overhead lines must be operated so that a clearance of 10 ft. is maintained. If the voltage is higher than 50kV, the clearance must be increased 0.4 inch for every 1kV over the vo…

(1) Employees must not enter spaces containing exposed energized parts, unless lighting is provided that enables the employees to perform the work safely.(2) Where lack of lighting or an obstruction prevents an employee from seeing the work to be performed, employees must not per…

(1) For working in a confined or enclosed space (such as a manhole or vault) that contains exposed energized parts, the employer must provide, and the employee must use, protective shields, protective barriers, or insulating materials that are necessary to avoid contact with thes…

(1) Where live parts present an electrical contact hazard, employees must not perform housekeeping duties near enough to the parts that there is a possibility of contact, unless adequate safeguards (such as insulating equipment or barriers) are provided.(2) Electrically conductiv…

Only a qualified person following the requirements of this section may defeat an electrical safety interlock, and then only temporarily while he or she is working on the equipment. The interlock system must be returned to its operable condition when this work is completed.[Statut…

[WSR 97-09-013, recodified as § 296-307-378, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-378, filed 10/31/96, effective 12/1/96.]

(1) WAC 296-307-376 and 296-307-378 cover electrical safety-related work practices for both qualified persons (those who have training in avoiding the electrical hazards of working on or near exposed energized parts) and unqualified persons (those with little or no such training)…

(1) The training requirements in this section apply to employees who face a risk of electrical shock that is not reduced to a safe level by the electrical installation requirements of WAC 296-307-362 through 296-307-374.(2) Training contents must include the following:(a) Employe…

Safety-related work practices must be used to prevent electric shock or other injuries resulting from either direct or indirect electrical contacts, when work is performed near or on equipment or circuits that are or may be energized. The specific safety-related work practices mu…

(1) This section applies to work on exposed deenergized parts or near enough to them to expose the employee to any electrical hazard they present. Conductors and parts of electric equipment that have been deenergized but have not been locked out or tagged must be treated as energ…

The employer must maintain a written copy of the procedures outlined in WAC 296-307-37807 through 296-307-37817 and must make it available for inspection by us or by employees. The written procedures may be in the form of a copy of WAC 296-307-37807 through 296-307-37817.[Statuto…

(1) Safe procedures for deenergizing circuits and equipment must be determined before circuits or equipment are deenergized.(2) The circuits and equipment to be worked on must be disconnected from all electric energy sources. Control circuit devices, such as push buttons, selecto…

(1) A lock and a tag must be placed on each disconnecting means used to deenergize circuits and equipment on which work is to be performed, except as provided in subsections (3) and (5) of this section. The lock must be attached to prevent anyone from operating the disconnecting …

The requirements of this section must be met before any circuits or equipment can be considered and worked as deenergized.(1) A qualified person must operate the equipment operating controls or otherwise verify that the equipment cannot be restarted.(2) A qualified person must us…

These requirements must be met, in the order given, before circuits or equipment are reenergized, even temporarily.(1) A qualified person must conduct tests and visual inspections as necessary to verify that all tools, electrical jumpers, shorts, grounds, and other devices have b…

This section applies to using cord-connected and plug-connected equipment, including flexible cord sets (extension cords).(1) Portable equipment must be handled in a manner that will not cause damage. Flexible electric cords connected to equipment must not be used for raising or …

(1) Load rated switches, circuit breakers, or other devices specifically designed as disconnecting means must be used for the opening, reversing, or closing of circuits under load conditions. Any cable connectors other than the load-break type, fuses, terminal lugs, and cable spl…

(1) Only qualified persons may perform testing work on electric circuits or equipment.(2) Test instruments and equipment and all associated test leads, cables, power cords, probes, and connectors must be visually inspected for external defects and damage before the equipment is u…

Where flammable materials are present only occasionally, electric equipment capable of igniting them must not be used, unless measures are taken to prevent hazardous conditions from developing.Such materials include, but are not limited to: Flammable gases, vapors, or liquids; co…

[WSR 97-09-013, recodified as § 296-307-380, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-380, filed 10/31/96, effective 12/1/96.]

(1) Employees working in the areas where there are potential electrical hazards must have and use electrical protective equipment that is appropriate for the specific parts of the body to be protected and for the work to be performed.(2) If the insulating capability of protective…

(1) When working near exposed energized conductors or circuit parts, each employee must use insulated tools or handling equipment if the tools or handling equipment might make contact with such conductors or parts. If the insulating capability of insulated tools or handling equip…

Insulating blankets, matting, covers, line hose, gloves, and sleeves made of rubber must meet the following manufacture and marking requirements:(1) Blankets, gloves, and sleeves must be produced by a seamless process.(2) Each item must be clearly marked as follows:(a) All classi…

Insulating blankets, matting, covers, line hose, gloves, and sleeves made of rubber must meet the following electrical requirements:(1) Equipment must be capable of withstanding the a-c proof-test voltage specified in Table 1 or the d-c proof-test voltage specified in Table 2.(a)…

Insulating blankets, matting, covers, line hose, gloves, and sleeves made of rubber must meet the following workmanship and finish requirements:(1) Equipment must be free of harmful physical irregularities that can be detected by the tests or inspections required in WAC 296-307-3…

(1) Electrical protective equipment must be maintained in a safe, reliable condition.(2) The following specific requirements apply to insulating blankets, covers, line hose, gloves, and sleeves made of rubber:(a) Maximum use voltages must meet the requirements in Table 4.(b) Insu…

[WSR 97-09-013, recodified as § 296-307-400, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-400, filed 10/31/96, effective 12/1/96.]

WAC 296-307-400 covers the transportation and application of anhydrous ammonia.[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 20-21-091, § 296-307-40001, filed 10/20/20, effective 11/20/20. Statutory Authority: RCW 49.17.040. WSR 98-24-096, § 296-30…

Certified. The equipment has been tested by a nationally recognized testing laboratory and meets nationally recognized standards or is safe for a specific use; or is a kind whose production is periodically inspected by a nationally recognized testing laboratory, and bears identif…

(1) All employees must use at least gloves and goggles and may supplement with a face shield while working on or with charged anhydrous ammonia equipment.(2) The employer must ensure that equipment is inspected before each day's work. Conditions that would contribute to leaks mus…

All anhydrous ammonia containers with a capacity of 3,000 gallons or less and equipment mounted on farm wagons (implements of husbandry) that is used to transport ammonia must meet the requirements of this section.WAC 296-307-40011 through 296-307-40037 also apply unless otherwis…

This section applies to systems mounted on farm equipment that are used for the field application of ammonia.WAC 296-307-40011 through 296-307-40037 also apply unless otherwise noted.(1) All containers must be securely mounted.(2) Container valves and accessories must meet the fo…

All equipment must be approved by one of the following methods:(1) The equipment was installed before February 8, 1973, and was approved and tested, and installed according to either the requirements of the American National Standard for the Storage and Handling of Anhydrous Ammo…

The code is the Unfired Pressure Vessel Code of the American Society of Mechanical Engineers (Section VIII of the ASME Boiler Construction Code), 1952, 1956, 1959, 1962, 1965, 1968 and 1971 editions, the joint code of the American Petroleum Institute and the American Society of M…

(1) System nameplates, when required, must be permanently attached to the system so they are readily accessible for inspection.(2) Each container or system covered in WAC 296-307-40005 and 296-307-40007 must be marked as follows:(a) With indication that the container or system me…

(1) When selecting the location for a storage container, the employer must take into account the physiological effects of ammonia and adjacent fire hazards. Containers located indoors must be in areas especially approved for container storage.(2) Containers must be located at lea…

(1) All accessories must be designed for at least the maximum working pressure of the part of the system on which they are installed. All accessories must be fabricated from materials suitable for anhydrous ammonia service.(2) All connections to containers must have shut-off valv…

(1) All piping, tubing and fittings must be made of material suitable for anhydrous ammonia service.(2) All piping, tubing and fittings must be designed for a pressure of at least the maximum pressure to which they may be subjected in service.(3) All piping must be well supported…

(1) Hose used in ammonia service and subject to container pressure must meet the requirements of the joint Rubber Manufacturers Association and the Fertilizer Institute "Hose Specifications for Anhydrous Ammonia."(2) Hose subject to container pressure must be designed for a minim…

(1) Every container used in systems covered by WAC 296-307-400 must have one or more spring-loaded safety-relief valves or the equivalent.(2) The discharge from safety-relief valves must be vented away from the container, upward, and unobstructed to the atmosphere. All safety-rel…

(1) The employer must train employees required to handle ammonia in the safe operating practices and the proper action to take in an emergency. Employees must be instructed to use the equipment listed in subsection (3) of this section in an emergency.(2) If ammonia system leaks, …

Filling density means the percent ratio of the weight of the gas in a container to the weight of water at 60°F that the container will hold. One pound of water equals 27.737 cubic inches at 60°F. To determine the weight capacity of the tank in pounds, the weight of a gallon (231 …

(1) Anhydrous ammonia must always be at a temperature suitable for the material of construction and design of the receiving containers. Ordinary steels are not suitable for refrigerated ammonia. See Appendix R of API Standard 620 "Recommended Rules for Design and Construction of …