1. PURPOSE
1.1 This is about technical requirements for barriers and barricades.
2. Temporary Barricades Requirements in Petrochemical Plants
2.1 This procedure applies to Company personnel and locations and to contractors working under Company supervision. This procedure does not apply to Machine guarding and electrical work.
3. DEFINITIONS
3.1 Barrier – A physical obstruction which is intended to prevent contact with energized lines or equipment or other potential hazards.
3.2 Barricade – A physical obstruction (such as tapes, chains, screens, cones, sawhorses, etc.) intended to warn and limit access to a hazardous area. Signs alone are not considered barricades.
3.3 Standard Railing – A vertical barrier erected along exposed edges of a floor opening, wall opening, ramp, platform, or runway to prevent people from falling.
4. SUMMARY
4.1 A facility may use several methods to limit access to areas where potentially dangerous work is being performed. The person responsible for having a barrier, barricade, or railing installed must retain responsibility for its maintenance and must take additional action if barrier, etc., is not limiting access adequately. This responsibility includes having the barricade, barrier, or railing removed when it is no longer required.
4.2 Barricades, barriers, and railings need to be checked periodically to ensure they are still serviceable.
4.3 A barricade should not be used as a substitute for a physical barrier railing where a barrier railing is required.
4.4 Potential hazards requiring temporary barriers or barricades should only exist for a minimum period of time.
4.5 If lighting is poor in the area, blinking yellow lights should be used in addition to other barricading devices to call attention to the area. (Caution: Electrical classification of area must be observed.)
5. PROCEDURE
5.1 General Requirements
5.1.1 Where tape is used to comply with this guideline, the following color code shall be observed: YELLOW-BLACK tape or equivalent color as mandated by local legislation is used to denote a caution or a warning. YELLOW-MAGENTA tape or equivalent color as mandated by local legislation is used to denote a work area where a radioactive material is present. RED tape or equivalent color as mandated by local legislation is used to denote an area where entry is restricted to all personnel unless entry is specifically authorized by the supervisor in charge of the area.
5.1.2 Barricades and barriers must have a caution or a danger tag or a sign affixed in a clearly visible location. This is the responsibility of the person erecting the barricade or barrier. The following information is required:
5.1.3 Reason for barricade.
5.1.4 Name of responsible individual.
Note that any tags used for this purpose must be unique and different from those used for lockout/tagout of energy isolating devices as described in 25-010532 Energy Isolation and Lockout/Tagout/Try.
5.1.5 Each facility should establish inventory standards for all barricading equipment and have these items in stock and readily accessible.
5.1.6 Barricading shall be included as part of a safety work permit issued for the associated work.
5.2 Area where overhead work is in progress The area beneath an overhead work area should be barricaded. The barricaded area should include a margin of protection in case an object falls from the overhead work area into the lower work area.
5.3 Motorized and mobile equipment (including cranes)
5.3.1 Equipment must be barricaded when in a stationary application or out of service but stored in a roadway or access path.
5.3.2 Any equipment that is left in a roadway overnight must be barricaded using yellow blinking caution lights.
5.3.3 For crane operations, the area beneath the lift must be barricaded. Barricading the swing radius of a rotating crane superstructure is also required at all times when the superstructure is capable of rotating. This includes the functions of lifting and leveling of the crane. For additional crane operation requirements see Engineering Standard Crane and Lifting Procedures.
5.4 Work areas where x-raying is in progress Yellow-magenta barricade tape or equivalent color as mandated by local legislation on which a radiation caution sign is hung is used to restrict access to such areas. Personnel not directly engaged with the x-raying operation are prohibited from the area.
5.5 Work areas involving unusual situations such as chemical leaks, obstructed accessways, etc.
5.5.1 Barricade must be at a sufficient distance from the hazard to warn/protect against a failure or change in conditions.
5.5.2 Barricades should be erected to warn/protect personnel of a chemical leak or spill until repairs or clean-up can be completed.
5.6 Excavations Excavations, regardless of their depth, may not be left unprotected. This is to prevent personnel from inadvertently tripping or falling at the excavation site. Refer to EH&S standard 25-010529 Control of Excavation Work for additional detail on excavations. Various methods of protecting excavation sites are listed below: When using plywood or another buoyant material to cover an excavation, consideration should be given to securing the material so that is cannot float away during heavy rains. When backfilling a trench across a road, the mound should be minimized as much as possible. If this is impractical, erect warning signs so that drivers can slow down to a safe speed prior to reaching the backfilled area. In addition, all excavations must adhere to applicable standards and guidelines for bracing and shoring. Additional precautions may be required for off-site excavations and state and local regulations must be considered: Warning signs shall be erected around the entire excavation. Use yellow blinker lights if lighting is poor and Install caution signs approximately every 6m/20′. Shallow Excavations (1.2m/4′ or less) – All shallow excavations shall be barricaded. Excavations greater than 1.2m/4′ – o Cover excavation with scaffold boards (plywood–a minimum of 20 mm or 3/4″ thick, 5-ply, exterior grade) or other suitable decking which can carry the anticipated loads and enclose the area with the proper barricade tape to warn of a tripping hazard. OR o Erect the barricade that is set back from the edge of the excavation so they can’t be easily knocked into the excavation. OR o Erect a standard hand rail. The railing should be of sufficient strength to prevent someone from breaking through the railing.
5.7 Temporary Floor Openings A floor opening is defined as an opening measuring 0.15m / 6″ or more in its least dimension in any floor, platform, pavement, etc., through which a person might fall. Temporary floor openings are to be either attended by someone at all times, or covered over with suitable decking, or enclosed with a temporary standard railing. Decking should be secured to prevent the decking from slipping. Use barricade tape and caution signs to warn of a tripping hazard.
5.8 Removal of Railing Where a section of railing has been removed, the area must be constantly attended until either the railing is replaced or a temporary railing or barricade is installed in its place.
5.9 Areas where high pressure hydro-Jetting (water blasting) or sandblasting is in progress (excluding designated and protected shop areas): The barricade must be at a sufficient distance from the hazard to warn/protect personnel against a failure or change in condition. See EH&S Standard 25-010514 Hydro-Jetting (Water Blasting) Safety. When entering the barricaded area, special personal protective equipment may be required. Low to moderate pressure hot water for cleaning need not be barricaded as long as direct exposure to the stream will not cause any serious physical harm.
6. RELATED INFORMATION
6.1 Company EH&S Documents 25-010514 Hydro-Jetting (Water Blasting) Safety 25-010529 Control of Excavation Work 25-010530 Safety Work Permit 25-010532 Energy Isolation and Lockout/Tagout/Try 25-010533 Permit-Required Confined Space Entry 25-010540 Scaffolding Crane and Lifting Procedures
6.2 Others ⊕ U.S. Department of Labor – Occupational Safety and Health Administration (OSHA) ⊕ 29 CFR Part 1910 – Occupational Safety and Health Standards for General Industry ⊕ EEC/92/58 Directive on Safety and/or Health signs