manhole rehabilitation

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- (c) Access and egress -(1) Structural ramps. (i) Structural ramps that are used solely by employees as a means of access or egress from excavations shall be designed by a competent person. Structural ramps used for access or egress of equipment shall be designed by a competent person qualified in structural design, and shall be constructed in accordance with the design. - (ii) Ramps and runways constructed of two or more structural members shall have the structural members connected together to prevent displacement. - (iii) Structural members used for ramps and runways shall be of uniform thickness. - (iv) Cleats or other appropriate means used to connect runway structural members shall be attached to the bottom of the runway or shall be attached in a manner to prevent tripping. - (v) Structural ramps used in lieu of steps shall be provided with cleats or other surface treatments on the top surface to prevent slipping. - (2) Means of egress from trench excavations. A stairway, ladder, ramp or other safe means of egress shall be located in trench excavations that are 4 feet (1.22 m) or more in depth so as to require no more than 25 feet (7.62 m) of lateral travel for employees. - (d) Exposure to vehicular traffic. Employees exposed to public vehicular traffic shall be provided with, and shall wear, warning vests or other suitable garments marked with or made of reflectorized or high-visibility material. - (e) Exposure to falling loads. No employee shall be permitted underneath loads handled by lifting or digging equipment. Employees shall be required to stand away from any vehicle being loaded or unloaded to avoid being struck by any spillage or falling materials. Operators may remain in the cabs of vehicles being loaded or unloaded when the vehicles are equipped, in accordance with §1926.601(b)(6), to provide adequate protection for the operator during loading and unloading operations. - (f) Warning system for mobile equipment. When mobile equipment is operated ad…

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Division 2 AO 2-2017 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (a) While work is being performed in a manhole or vault containing energized electric equipment, an employee with first-aid and cardiopulmonary resuscitation training must be available on the surface in the immediate vicinity of the manhole or vault entrance to render emergency assistance. - (b) Occasionally, the employee on the surface may briefly enter a manhole or vault to provide nonemergency assistance. - Note 1 to paragraph (3)(b): [redacted phone](7) of Division 2/RR may also require an attendant and does not permit this attendant to enter the manhole or vault. - Note 2 to paragraph (3)(b): [redacted phone](1)(b) of Division 2/RR requires employees entering manholes or vaults containing unguarded, uninsulated energized lines or parts of electric equipment operating at 50 volts or more to be qualified. - (c) For the purpose of inspection, housekeeping, taking readings, or similar work, an employee working alone may enter, for brief periods of time, a manhole or vault where energized cables or equipment are in service if the employer can demonstrate that the employee will be protected from all electrical hazards. - (d) The employer must ensure that employees maintain reliable communications, through two-way radios or other equivalent means, among all employees involved in the job. - (4) Duct rods. The employer must ensure that, if employees use duct rods, the employees install the duct rods in the direction presenting the least hazard to employees. The employer must station an employee at the far end of the duct line being rodded to ensure that the employees maintain the required minimum approach distances. - (5) All primary cables must be permanently and plainly identified by tags or other methods at both ends. - (6) Multiple cables. When multiple cables are present in a work area, the employer must identify the cable to be worked by electrical means, unless i…

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## S-15.1 REG 10 ## OCCUPATIONAL HEALTH AND SAFETY, 2020 - (2) An employer or contractor shall not require or permit a worker: - (a) to enter the belled area of an excavated shaft unless the worker is protected by a temporary protective structure that is designed by a professional engineer and constructed, installed, used, maintained and dismantled in accordance with that design; or - (b) to remain in a belled area of an excavated shaft if the worker may be exposed to falling materials. - (3) An employer or contractor shall ensure that the worker precedes or accompanies each load of excavated material to the surface. 31 Dec 2020 c S-15.1 Reg 10 s17-9. ## PART 18 ## Confined Space Entry Definitions for Part 18-1 In this Part: 'confined space' means an enclosed or partially enclosed space that: - (a) is not primarily designed or intended for human occupancy, except for the purpose of performing work; and - (b) has restricted means of entrance and exit; 'hazardous confined space' means a confined space that is or may become hazardous to a worker entering the confined space due to: - (a) the design, construction or atmosphere of the confined space; - (b) the materials or substances in the confined space; - (c) the work activities or processes used in the confined space; or - (d) any other conditions relating to the confined space; 'isolate' means to physically interrupt or disconnect pipes, lines and sources of energy from a confined space. 31 Dec 2020 c S-15.1 Reg 10 s18-1. ## Identification of confined spaces, hazards, etc. 18-2 If a worker may be required or permitted to work in a confined space, an employer, in consultation with the committee, shall identify: - (a) types of confined spaces at the place of employment that a worker may be required or permitted to enter; - (b) types of hazards that are or may be present at each confined space;

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Oregon Occupational Safety and Health Division Division 2 - (B) When unsafe conditions are detected by testing or other means, the work area shall be ventilated and otherwise made safe before entry. - (ii) An adequate continuous supply of air shall be provided while work is performed in manholes under any of the following conditions: - (A) Where combustible or explosive gas vapors have been initially detected and subsequently reduced to a safe level by ventilation, - (B) Where organic solvents are used in the work procedure, - (C) Where open flame torches are used in the work procedure, - (D) Where the manhole is located in that portion of a public right of way open to vehicular traffic and/or exposed to a seepage of gas or gases, or - (E) Where a toxic gas or oxygen deficiency is found. (iii) - (A) The requirements of paragraphs (o)(2)(i) and (ii) of this section do not apply to work in central office cable vaults that are adequately ventilated. - (B) The requirements of paragraphs (o)(2)(i) and (ii) of this section apply to work in unvented vaults. - (3) Joint power and telecommunication manholes. While work is being performed in a manhole occupied jointly by an electric utility and a telecommunication utility, an employee with basic first aid training shall be available in the immediate vicinity to render emergency assistance as may be required. The employee whose presence is required in the immediate vicinity for the purposes of rendering emergency assistance is not to be precluded from occasionally entering a manhole to provide assistance other than in an emergency. The requirement of this paragraph (o)(3) does not preclude a qualified employee, working alone, from entering for brief periods of time, a manhole where energized cables or equipment are in service, for the purpose of inspection, housekeeping, taking readings, or similar work if such work can be performed safely. - (4) Ladders. Ladders shall be used to enter and exit manholes exceeding 4 feet in…

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## 29 CFR 1926 (OSHA) - (iii) Adequate precaution shall be taken such as providing ventilation, to prevent employee exposure to an atmosphere containing a concentration of a flammable gas in excess of 20 percent of the lower flammable limit of the gas. - (iv) When controls are used that are intended to reduce the level of atmospheric contaminants to acceptable levels, testing shall be conducted as often as necessary to ensure that the atmosphere remains safe. - (2) Emergency rescue equipment. (i) Emergency rescue equipment, such as breathing apparatus, a safety harness and line, or a basket stretcher, shall be readily available where hazardous atmospheric conditions exist or may reasonably be expected to develop during work in an excavation. This equipment shall be attended when in use. - (ii) Employees entering bell-bottom pier holes, or other similar deep and confined footing excavations, shall wear a harness with a life-line securely attached to it. The lifeline shall be separate from any line used to handle materials, and shall be individually attended at all times while the employee wearing the lifeline is in the excavation. - (h) Protection from hazards associated with water accumulation. (1) Employees shall not work in excavations in which there is accumulated water, or in excavations in which water is accumulating, unless adequate precautions have been taken to protect employees against the hazards posed by water accumulation. The precautions necessary to protect employees adequately vary with each situation, but could include special support or shield systems to protect from cave-ins, water removal to control the level of accumulating water, or use of a safety harness and lifeline. - (2) If water is controlled or prevented from accumulating by the use of water removal equipment, the water removal equipment and operations shall be monitored by a competent person to ensure proper operation. - (3) If excavation work interrupts the natural drainage of surface …

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## OCCUPATIONAL HEALTH AND SAFETY, 2020 - (c) alternative means to perform the work to be performed in a confined space that will not require the worker to enter the confined space; and - (d) alterations to the physical characteristics of the confined spaces that may be necessary to ensure safe entrance to and exit from all accessible parts of each confined space. 31 Dec 2020 c S-15.1 Reg 10 s18-2. ## Avoidance of entry into hazardous confined space - 18-3 (1) If reasonably practicable, an employer shall use an alternative means to perform work that will not require a worker to enter a hazardous confined space. - (2) An employer shall take all reasonably practicable steps to prevent any unauthorized entry into the confined space. 31 Dec 2020 c S-15.1 Reg 10 s18-3. ## Requirements before confined space is entered - 18-4 (1) If a worker will be required or permitted to work in a confined space, an employer, contractor or owner shall, before requiring or permitting the worker to enter the confined space: - (a) ensure that there is a safe entrance to and exit from all accessible parts of the confined space; and - (b) make all practicable alterations to the physical characteristics of the confined space necessary to ensure a safe entrance to and exit from all accessible parts of the confined space. - (2) In making alterations pursuant to clause (1) (b), an employer shall ensure that the structural integrity of the confined space is maintained. 31 Dec 2020 c S-15.1 Reg 10 s18-4. ## Requirements before hazardous confined space is entered - 18-5 (1) Before a worker is required or permitted to enter a confined space, an employer shall appoint a competent person: - (a) to assess the hazards; - (b) if a hazardous atmosphere has been identified, to test the atmosphere of the confined space for: - (i) oxygen enrichment or deficiency; - (ii) the presence of flammable or explosive substances; and - (iii) the presence and hazardous concentration of…

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Division 2 AO 6-2017 Oregon Occupational Safety and Health Division - (i) Metal measuring tapes, metal measuring ropes, or tapes containing conductive strands may not be used when working near exposed energized parts. - (ii) Where it is necessary to measure clearances from energized parts, only non-conductive devices shall be used. - (o) Underground lines. The provisions of this paragraph apply to the guarding of manholes and street openings, and to the ventilation and testing for gas in manholes and unvented vaults, where telecommunications field work is performed on or with underground lines. - (1) Guarding manholes and street openings. - (i) When covers of manholes or vaults are removed, the opening shall be promptly guarded by a railing, temporary cover, or other suitable temporary barrier which is appropriate to prevent an accidental fall through the opening and to protect employees working in the manhole from foreign objects entering the manhole. - (ii) While work is being performed in the manhole, a person with basic first aid training shall be immediately available to render assistance if there is cause for believing that a safety hazard exists, and if the requirements contained in paragraphs (d)(1) and (o)(1)(i) of this section do not adequately protect the employee(s). Examples of manhole work site hazards which shall be considered to constitute a safety hazard include, but are not limited to: - (A) Manhole work sites where safety hazards are created by traffic patterns that cannot be corrected by provisions of paragraph (d)(1) of this section. - (B) Manhole work sites that are subject to unusual water hazards that cannot be abated by conventional means. - (C) Manhole work sites that are occupied jointly with power utilities as described in paragraph (o)(3) of this section. - (2) Requirements prior to entering manholes and unvented vaults. - (i) Before an employee enters a manhole, the following steps shall be taken: - (A) The internal atmosphere shall …