PPCI - PORTO ALEGRE PREVENÇÃO DE INCÊNDIO

 

CARLOS WENGROVER

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Plano de Emergência para Incidentes em Linha de Gás Natural


OSU EMERGENCY PLAN FOR NATURAL GAS PIPELINE INCIDENTS

Emergency Procedures

Incident Notification

Incident Priorities

Incident Responsibilities

Response Procedures

Post-Incident Management

Post-Incident Reporting

Responding to Gas Leak Reports

Minimum Operator Response Actions

This Emergency Plan provides a guide for complying with the Federal and State requirements, assuring safety for the public and maintaining facilities in satisfactory condition.

An "emergency" condition exists when OSU management, or a responsible person, has determined that extraordinary procedures, equipment, manpower and supplies must be employed to protect the public safety or property from existing or potential hazard.

These hazards will include, but are not limited to, the following:

  • Underpressure in the gas system
  • Overpressure in the gas system
  • Uncontrolled escaping gas
  • Fire or explosion near or directly involving a pipeline facility
  • Any leak considered hazardous
  • Danger to major segment(s) of the system

The hazards also include:

  • Natural disasters (floods, tornadoes, hurricanes, earthquakes, etc.)
  • Civil disturbances (riots, etc.)
  • Load reduction conditions (result in voluntary or mandatory reduction of gas usage).

EMERGENCY PROCEDURES

I.  INCIDENT NOTIFICATION

Every event that fits the definition of a natural gas pipeline system incident as identified on the previous page shall be reported to the Physical Plant Work Control Center (see below). (The caller will reach an answering service after normal working hours.)

Physical Plant Work Control Center--(744-7154)

Monday through Friday from 7:00 a.m. to 10:00 p.m.;
[Action Desk is closed on University holidays. The Call Control System refers the caller to Physical Plant standby employees during off hours.]

If no one can be reached, call OSU Campus Police (911, 311 or 744-6153).

Work Control personnel (or the answering service) will report to the following Oklahoma State University authorities:

  1. Director of Environmental Health & Safety
    (744-7241, 624-3604, pager 707-2650, mobile radio 278, or cell phone 747-7156).

    The EHS Director (or appointed representative) will report the incident, if necessary, to the following:

    • The City of Stillwater (911)
      Stillwater Emergency Coordination & Communications (372-7484)
    • The State of Oklahoma Corporation Commission (405-521-2258)

  2. Assistant Vice President of Physical Plant Services (744-7147)

II.  INCIDENT PRIORITIES AND CRITERIA FOR ACTION

Priorities

  1. The first priority of action for all incidents involving natural gas will be directed toward life safety first followed by property. Immediate care shall be given to any injured person(s).

  2. The surrounding area will be evacuated to reduce risk of additional casualties.

Level 1 Incidents

Definition:
A leak that represents an existing or probably hazard to persons or property.   Requires immediate repair or continuous action until the conditions are no longer hazardous.

Action Criteria:
Requires prompt action to protect life and property, and continuous action until the conditions are no longer hazardous.  The prompt action in some instances may require one or more of the following:

  • Implementation of OSU Emergency Plan
  • Evacuating premises
  • Blocking off an area
  • Rerouting traffic
  • Eliminating sources of ignition
  • Venting the area
  • Stopping the flow of gas by closing valves or other means
  • Notifying police and fire departments

Examples:

  1. Any leak, which in the judgment of operating personnel at the scene, is regarded as an immediate hazard.

  2. Escaping gas that has ignited.

  3. Any  indication of gas that has migrated into or under a building or into a tunnel.

  4. Any reading at the outside wall of a building or where gas would likely migrate to an outside wall of a building.

  5. Any reading of 80% LEL or greater in a confined space.

  6. Any reading of 80% LEL or greater in small substructures (other than gas-associated substructures) from which gas would likely migrate to the outside wall of a building.

  7. Any leak that can be seen, heard or felt, and which is in a location that may endanger the general public or property.


Level 2 Incidents

Definition:
A leak that is recognized as being non-hazardous at the time of detection, but justifies scheduled repair based on probable future hazard.

Action Criteria:
Leaks should be repaired or cleared within one calendar year, but no later than 15 months from the date the leak was reported.  In determining the repair priority, criteria such as the following should be considered:

  • Amount and migration of gas
  • Proximity of gas to buildings and sub-surface structures
  • Extent of pavement
  • Soil type and soil conditions (such as frost cap, moisture & natural venting)

Level 2 leaks should be reevaluated at least once every six months until cleared.  The frequency of reevaluation should be determined by the location and magnitude of the leakage condition.

Level 2 leaks may vary greatly in degree of potential hazard.  Some Level 2 leaks, when evaluated by the above criteria, may justify scheduled repair within the next 5 working days.  Others will justify repair within 30 days.  During the working day on which the leak is discovered, these situations should be brought to the attention of the individual responsible for scheduling leak repair.

On the other hand, may Level 2 leaks, because of their location and magnitude, can be scheduled for repair on a normal routine basis with periodic re-inspection as necessary.

Examples:

  1. Leaks requiring action ahead of ground freezing or other adverse changes in venting conditions

    Any leak, which under frozen or other adverse soil conditions, would likely migrate tothe outside wall of a building.

  2. Leaks requiring action within six months
    • Any reading of 40% LEL, or greater, under a sidewalk in a wall-to-wall paved area that does not qualify as a Level 1 leak.
    • Any reading of 100% LEL, or greater, under a street in a wall-to-wall paved area that has significant gas migration and does not qualify as a Level 1 leak.
    • Any reading less than 80% LEL in small substructures (other than gas-associated substructures) from which gas would likely migrate, creating a probable future hazard.
    • Any reading between 20% LEL and 80% LEL in a confined space.
    • Any reading on a pipeline operating at 30% SMYS, or greater, in a class 3 or 4 location, which does not qualify as a Level 1 leak.
    • Any reading of 80% LEL, or greater, in gas-associated substructures
    • Any leak, which in the iudgment of operating personnel at the scene, is of sufficient magniture to justify scheduled repair.

Level 3 Incidents

Definition:
A leak that is non-hazardous at the time of detection and can be reasonably expected to remain non-hazardous.

Action Criteria:
These leaks should be re-evaluated during the next scheduled survey, or within 15 months of the date reported, whichever occurs first, until the leak is regraded or no longer results in a reading.

Examples:
Leaks requiring re-evaluation at periodic intervals--

  • Any reading of less than 80% LEL in small gas-associated substructures.
  • Any reading under a street in areas without wall-to-wall paving where it is unlikely the gas could migrate tothe outside wall of a building.
  • Any reading of less than 20% LEL in a confined space.

III. INCIDENT RESPONSIBILITIES
  1. The 1st Responder, then OSU's Environmental Health & Safety Department, shall establish a command post (utilizing the Incident Command System) near the scene, when necessary or required, to coordinate the incident.

  2. On-scene emergency personnel from Stillwater Fire Department and OSU's Environmental Health & Safety Department shall provide immediate first aid to injured persons when it is safe to do so.

  3. OSU's Environmental Health & Safety Department, OSU Campus Police, and Stillwater Fire Department shall conduct evacuations in the event of fire, explosion, natural disaster or other incident, when necessary, as directed by the Incident Commander.

  4. OSU Campus Police, in conjunction with other supporting agencies, shall establish, maintain, and man all necessary incident perimeters and barricades as directed by the Incident Commander.

  5. OSU Physical Plant Mechanical Maintenance personnel, in cooperation with the Oklahoma Natural Gas Company, shall isolate the incident area by shutting off the flow of any gas from feed lines into the impacted area.

  6. The City of Stillwater Fire Department shall manage any fire suppression needs as well as provide advanced emergency medical care and transportation of patients.

  7. OSU's Environmental Health & Safety Department shall monitor the atmospheric conditions around the site and shall have the appropriate PPE ready to utilize in penetrating affected areas upwind of the incident for monitoring and rescue purposes if needed.

  8. Manpower and equipment shall be provided by OSU's Physical Plant. Said manpower and equipment shall work jointly upon direction by the Incident Commander.


IV.  RESPONSE PROCEDURES

In case of fire located near or directly involving a pipeline facility, explosion occurring near or directly involving a pipeline facility, natural disaster, or other emergency incident, the following response procedures will be followed:

Notification will proceed as designated in Section I.

The first responder(s) from OSU's Environmental Health and Safety Department shall designate an incident commander and activate the incident command system (ICS). When necessary, an on-scene incident command post shall also be established.

The on-scene incident command post shall be located upwind and as close as practical to the incident site so that continual visual observations may be maintained of the incident area, and immediate response to changing conditions may be possible. The on-scene command post shall stay in communication with all responding agencies.

Responding agencies shall provide designated responsibilities as listed in Section V, under the direction of the incident commander.

First aid and medical care will be provided by OSU EHS and Stillwater Fire Department to injured persons as soon as possible.

Firefighting and fire suppression operations will be initiated and conducted by Stillwater Fire Department.

Gas valve shut off will be conducted as quickly as possible by OSU Physical Plant and ONG personnel.

Perimeter zone(s) around the effected area shall be established as directed by the incident commander in accordance with standard emergency scene practices.

Hazard Zone - The Hazard Zone is the area in which personnel are potentially in immediate danger from the hazardous situation. This zone shall be established by the incident commander. Access to this area will be rigidly controlled and only authorized personnel with proper protective equipment and an assigned activity approved by the on-site incident command post shall be allowed to enter the incident area. OSU Campus Police personnel will be assigned to monitor entry and exit of all personnel from the Hazard Zone.

Evacuation Zone - The Evacuation Zone is the larger area surrounding the Hazard Zone, in which a lesser degree of risk to emergency personnel exists, but from which all civilians will be removed. The limits of this zone will be enforced by the OSU Campus Police and other agencies based upon distances and directions established by the incident commander. The area to be evacuated depends upon the nature and extent of the fire, explosion, natural disaster or other emergency. All evacuations shall be ordered by the incident commander and shall be conducted in an orderly, expedient fashion by OSU's Environmental Health & Safety Department, OSU Campus Police, and Stillwater Fire Department.

Additional Perimeter Zones may be established as necessary. These may include Hot Zone, Warm Zone, and Cold Zone for gas incidents that may also involve hazardous chemicals, as well as a Staging Area for any major incident that may require large numbers of personnel and equipment.

Incident-specific circumstances will dictate other procedures that will be used to bring the emergency under control in accordance with the priorities of life safety first, followed by the protection and salvage of property.

V.  POST-INCIDENT MANAGEMENT
  1. Upon declaration of the Incident Commander that the incident is under control and the incident area is safe, EHS and SFD personnel shall sweep the incident area searching for any additional casualties. Upon completion of the sweep, responsible personnel shall begin the cause and origin procedures. Upon completion of the investigation, repairs may be initiated.

  2. Barriers shall remain intact and any area vacated due to the incident shall remain vacated until repairs and any required tests are completed before restoring all systems back to normal operating conditions.

  3. Repairs shall be initiated immediately and shall be expedited to restore normal service and to place OSU's gas distribution system into a normal and safe mode of operation.

  4. Normal procedures shall apply to the emergency repairs:

    • Only qualified personnel shall perform the repairs.
    • Only approved material as specified in the Guide for Small Gas Operators shall be utilized.
    • OSHA & OSU's safety procedures and guidelines shall be utilized.

  5. Upon completion of repairs, and after the gas system has been successfully tested and restored to operation, the incident area may be released for normal operation.

    • A final inspection of the area shall be conducted by the Incident Commander.
    • As directed the Incident Commander:

      1. Barriers shall be removed
      2. Personnel shall be allowed to return to the area
      3. Emergency personnel shall be released upon direction by the Incident Commander
VI.  POST-INCIDENT REPORTING
  1. The Manager of Environmental Health & Safety shall, within 72 hours of the closure of the incident, schedule a debriefing with all agencies concerned, i.e., University, City, State, ONG, and National participants. This debriefing shall include, but not be limited to:

    • Critique of the incident
    • Problem areas identified
    • Revisions to the emergency plan, if needed
    • Factors that caused the incident

  2. Upon completion of the debriefing, open discussion for questions and answers.

  3. The Director of Environmental Health & Safety issues the final report.

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