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Trenching 2014 year in review

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2014 Excavation Safety in Review

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Trenching 2014 year in review

  1. 1. 2014 Excavation Safety in Review Draft 4 30 2015
  2. 2. Criminal 2014 • US Marshalls take IL trenching contractor to jail. • "A U.S. Marshall has taken an Illinois business owner into custody after the employer failed to correct serious trenching hazards and pay OSHA penalties. • On Oct. 27, the Seventh Circuit Court of Appeals granted a motion filed by Secretary of Labor Thomas E. Perez against the owner of Mike Neri Sewer & Water Contractor Inc., based in Elk Grove Village, Ill. • This action followed the owner's long history of failing to comply with OSHA standards and orders of the independent Occupational Safety and Health Review Commission. • In October 2013, the Court issued an enforcement order against Neri and when he failed to comply, the Court held Neri in contempt in July 2014 and threatened him with possible incarceration. • Last week, after receiving no response from Neri, the Court granted the Secretary's motion to proceed with coercive actions, ordering the U.S. Marshal to place Neri in the custody of the Attorney General. • Neri will remain in custody until a District or Magistrate Judge certifies to the Court that he has either fully complied with the Court's enforcement order or has demonstrated he is unable to comply.
  3. 3. Criminal 2014 • U.S. Sino Investment, its owner and a project manager were indicted Monday on involuntary manslaughter charges in the cave-in death of a construction worker at a Milpitas building site. • Raul Zapata Mercado, 38, was killed January 28, 2012, after a 12-ft. wall of dirt collapsed on top of him
  4. 4. December 2014 • Three trapped. • One took four hours to rescue. • Buried up to chest. • Trench 8-10 feet deep.
  5. 5. December 2014 • Ontario CA • 9 feet deep with spoil at edge • Successful rescue
  6. 6. November 2014 • OH Trench death. • One box. • 16-18 feet deep. • Dirt caved-in and buried 32 year old employee.
  7. 7. November 2014 • Myersville MD • 10 feet deep. • Died of internal injuries after being buried up his waist.
  8. 8. October 2014 • Grosse Point MI • Officials expect recovery work to continue at least into this evening. • Workers are removing about two-thirds of the roadway so they can drop a protective trench box into the hole as they try to recover the body, which is believed to be 16 to 18 feet underground. • Owner was killed.
  9. 9. October 2014 • Boontown, NJ • 10 feet deep • Two died • “excavated for a French drain”
  10. 10. Oct 2014 • Grove City PA • Eight feet deep • Buried up to chest behind blue ladder • 90 minutes to rescue.
  11. 11. August 2014 • TX • Piringer said the workers are trapped up to their waists/shoulders in wet mud and both are conscious and breathing.
  12. 12. July 2014 • Fort Bragg NC • 15 feet • “The 22 year old was trying to connect two pieces of drainage pipes when a rock or large clump of dirt knocked a wall loose” • Tekton faces $123,200 in penalties
  13. 13. July 2014 • Aurora CO • 14 feet deep. • 4 feet wide. • Successful rescue. • $14,000 Willful
  14. 14. June 2014 FL. Death The man was not working in the hole but he was standing on an excavator. He jumped off into the edge of the trench and the 20 foot deep trench gave way. He was covered in about a foot and a half of dirt.
  15. 15. June 2014 • NC • "The man was lowered into the trench on a bucket in a backhoe before the walls around him collapsed, killing him."
  16. 16. June 2014 • VA • 7 hour rescue • Buried up to chest • 20 feet deep
  17. 17. May 2014 • Windsor CT • Danny King, 51, was crushed between a backhoe and trench box while inside the trench, his father, John King, owner of the Bloomfield construction company, said Friday
  18. 18. May 2014 • VA • Rescue crews were called to a construction site on the 400 block of N. George Mason Drive around 3:30 p.m. for a report of a large piece of construction equipment that fell on a person. • The victim, believed to be the equipment’s operator, was pronounced dead on the scene by medics at 3:40 p.m.
  19. 19. May 2014 • Worker buried up to his waist in St. Louis. • Broken sewer pipe.
  20. 20. Mar 2014 • Cedar Hills OR • Two workers from Apollo Excavation were replacing a sewer line when dirt collapsed onto them. • A third worker went in to help them and was buried. • EMS workers helped uncover the face of a man who was buried the deepest, so the man could breathe, • The trench is about 15 feet deep.
  21. 21. Feb 2014 • VA • "He was trapped up to his neck and was starting to have difficulty breathing when crews quickly arrived and began their rescue," says Frederick County Fire Chief Denise Pouget
  22. 22. Purpose • The excavation standard is designed to protect against cave- in. • Violation • 13’ feet deep, Vertical walls, type C soil, undercutting walls
  23. 23. Competent Person • Competent person must inspect the excavation. Visual and manual test. • Violation • Excavation is undercutting street and front end loader only adds weight
  24. 24. Training • Workers must get training prior to working in the trench. • What training is covered?
  25. 25. Struck By Hazards • Violation • Worker under moving bucket
  26. 26. Trench Boxes • Violation • This box only has one horizontal brace across each end.
  27. 27. Trench Boxes • 1926.652 (g)(2): Trench shields must be within 2 feet of the bottom of the trench. • Incompliance
  28. 28. Sloping • Type A ¾:1 • Exception for short term duration under 24 hours. • Violation • 13’ deep vertical • Note: swing radius unprotected also
  29. 29. Sloping • Jan 2006 – Worker gets four ribs broken • Type B Soil (must be sloped at a 1:1) • 8 foot side on left collapses. 15 foot side does not.
  30. 30. Trench Boxes • Trench boxes must extend 18 inches above the grade or bank.
  31. 31. Access and Egress • Violation • A ladder must be available for access into trench
  32. 32. Access • What is the proper access?
  33. 33. Egress • Ladder or safe egress must be available within 25 feet of travel. • Violation • 75’ long trench with no ladder.
  34. 34. Egress • Incompliance • Ladder for use to get out a box.
  35. 35. Hydraulic Shoring • Violation • No stability in this set up.
  36. 36. Spoil Pile • 1926.651 (j)(2): Excavated material must be kept a minimum of 2 feet from the edge. • Violation. • Spoil at edge.
  37. 37. Soil Classification • Appendix A, section (c)(2): The classification of deposits shall be made on the results of least one manual and one visual analysis.
  38. 38. Soil Classification • Soil is cracking due to vibration from traffic. Soil type was classified as a Type C. • Note: Vibration must be able to be felt.
  39. 39. Power lines • Equipment must stay at least 10’ away from power lines • Violation • This equipment got within 5 feet of lower power lines.
  40. 40. Swing Radius • Violation: Excavator extends 42 inches beyond track. It is able to strike anyone walking by on this site. • This is incompliance. Cones are used to warn people.
  41. 41. December 2014
  42. 42. Utilities • 1926.651 (b)(2): Utility companies shall be contacted 24 hour prior to excavation to establish the location of underground utilities. • Violation. JULIE requires 48 hours
  43. 43. JULIE • 48 Hours • CALL 811 OR 1-800- 892-0123 to place a local request
  44. 44. Supporting Utilities • Incompliance: Existing storm sewer pipe is supported with chains.
  45. 45. Hard Hats • Violation: No hard hats worn despite being only inches away from the bucket.
  46. 46. Quick Disconnect • Buckets are falling onto employees • Must have a pinned connection if hydraulic fails that prevents the bucket from falling. 7/14/2014 OSHA's inspection found that one of the employees sustained fatal puncture wounds from the bucket after it disconnected from the excavator and rolled into the trench from a height of about 4 feet.
  47. 47. Charts Type A
  48. 48. Charts Type C Type B
  49. 49. 49 Frequently Cited
  50. 50. #1 1926.652(a)(1) • Protection from Cave- in • Many use double stacked boxes when over 10 feet.
  51. 51. #2 1926.651 (c)(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.
  52. 52. #3 1926.651(j)(2) • Protection shall be provided by placing and keeping such materials or equipment at least 2 feet (.61 m) from the edge of excavations, or by the use of retaining devices that are sufficient to prevent materials or equipment from falling or rolling into excavations, or by a combination of both if necessary.
  53. 53. #4 1926.651(k)(1) • Daily inspections of excavations, the adjacent areas, and protective systems shall be made by a competent person
  54. 54. #5 1926.651(k)(2) • Where the competent person finds evidence of a situation that could result in a possible cave-in, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions, exposed employees shall be removed from the hazardous area until the necessary precautions have been taken to ensure their safety.
  55. 55. #6 1926.651 (h)(1) • Employees shall not work in excavations in which there is accumulated water, or in excavations in which water is accumulating,
  56. 56. #7 1926.651 (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.
  57. 57. #8 1926.651 (i)(3) • Sidewalks, pavements and structure shall not be undermined unless a support system or another method of protection is provided to protect employees from the possible collapse of such structures.
  58. 58. #9 1926.651(j)(1) • Adequate protection shall be provided to protect employees from loose rock or soil that could pose a hazard by falling or rolling from an excavation face.
  59. 59. #10 1926.651(e) • No employee shall be permitted underneath loads handled by lifting or digging equipment.
  60. 60. Summary • Many contractors are not putting in cave-in protection for manhole installations. • Some companies have the equipment to protect against cave-in but do not use it. Worker was hurt in a cave-in when the excavation wall collapsed into the box.
  61. 61. Exercise • What is wrong here?
  62. 62. Quiz • Short term excavation is less than ___ hours • Utility companies shall be contacted at least ___ hours before digging • Equipment must stay at least ____ feet away from power lines • Excavated material must be kept a minimum of ___ feet from the edge. • Ladder or safe egress must be available within ___ feet of travel. • Type ____ Soil should be sloped at a 1:1

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