How to Haul a Victim in Half the Time: Part 1

Thursday, May 12, 2011

How to Haul a Victim in Half the Time: Part 1As anyone who has ever been summoned to an industrial site for a confined space rescue, or has taken the opportunity to practice rescue drills in these facilities knows, sometimes the working area for the rescue team can be a tad cozy.  By “cozy” we mean cramped.  If there is the need for a haul of the rescuers or victim after a lower, these cramped conditions can cause multiple problems.  Consider it a challenge to overcome, and use your rope rescue know-how to come up with an efficient solution that will not only reduce congestion at the working area, but will most likely provide for a much faster haul of the rescue package.

First of all, if the space lends itself to a vertically mounted block and tackle, the problem is greatly reduced.  However, if there is no overhead anchor available and the use of a portable overhead anchor such as a tripod is not feasible then a “lane” for the haul team may be necessary.  At times, even the use of a vertically mounted block and tackle may require a solution to a congested working area.

Sometimes we are confronted with a very short throw between the mechanical advantage anchor point and the edge of the portal.  This may cause multiple resets of the haul system, be it a piggyback system or a Z-Rig.  These short throws with multiple resets will really slow down the progress of hauling the rescue package and can become a significant hazard when the need for rapid retrieval is needed.

How to Haul a Victim in Half the Time: Part 1If the opportunity presents itself, take advantage of a simple change of direction on the haul system.  At times, a single 90-degree change of direction can convert a short 3-4 foot throw into a throw many times longer.  We see this all the time on catwalks, yet it is often overlooked by our rescue teams when we throw scenario-based training evolutions at them.  Yes, it does require some extra equipment which typically amounts to a single sheave pulley, a carabiner, and a utility strap.  It also adds some frictional losses at that directional pulley, but the advantage gained by extending the throw from 3-4 feet to 20 or more feet, far outweighs the disadvantages of extra equipment, added friction, and time needed to make the change.

If a single change of direction doesn’t quite solve the short throw problem, consider two, or even more changes of direction in order to position the haul team in an area thatthey can “walk the haul” using their leg strength instead of being bunched up and using their arm strength only.  Of course, it gets to a point where too many changes of direction exhausts the equipment cache or creates so much friction that any advantage is lost.

As in any rescue situation, a good cohesive team is a great benefit.  If the situation causes the team to be bunched up on top of each other, remember to scan the area for an opportunity to open things up a bit.  Sometimes that change of direction does wonders for the ability of the team to take full advantage of their strength in numbers, and creates a situation where if needed, speed can be a lifesaver.

How to Haul a Victim in Half the Time: Part 1About the Author:
Patrick Furr, employed with Roco since 2000, has been actively involved with technical rescue since 1981. Pat is a Chief Instructor/Technical Consultant for Roco and currently resides in Albuquerque, New Mexico. He has also been an On-Site Safety Services Team Leader for Roco at a major semiconductor company in New Mexico for the past ten years. As a Chief Instructor, Pat teaches Confined Space Rescue, Rope Access, Tower Work/ Rescue and Fall Protection programs across North America. Prior to Roco, he served 20 years in the U.S. Air Force as a Pararescueman (PJ). His background includes eight years as a member of the 71st Pararescue team in Anchorage, Alaska, where he specialized in mountain and glacier rescue. Pat was a team leader of the 1986 and 1988 PJ teams that summited Mt. McKinley and augmented the National Park Service mountain rescue team. He also spent two tours of duty in Iceland where he put in multiple “first ascent” ice routes.
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Atmospheric Monitors: “Calibration vs. Bump Testing”

Friday, January 21, 2011

Atmospheric Monitors: “Calibration vs. Bump Testing”“The fact that we rely on these instruments to detect hazards that may be colorless, odorless, and very often fatal, should be reason enough to motivate us to complete a very strict schedule of instrument calibration/maintenance and pre-use bump testing.”

Here at Roco, we’re often asked for an explanation of the difference between “calibration” and “bump testing” of portable atmospheric monitors. There seems to be some confusion, specifically regarding bump testing. Some folks believe that bump testing and calibration are the same thing. Others think that bump testing is no more than allowing the monitor to run its “auto span function” during the initial startup sequence – or by running a “manual auto span” in order to zero out the display if there is any deviation from the expected values.

To preface this explanation, it is important that the user maintain and operate the monitor in accordance with the manufacturer’s instructions for use. There are some general guidelines that apply to all portable atmospheric monitors and some of the information in this article is drawn from an OSHA Safety and Health Information Bulletin (SHIB) dated 5/4/2004 titled “Verification of Calibration for Direct Reading Portable Gas Monitors.”

Considering that atmospheric hazards account for the majority of confined space fatalities, it is absolutely imperative that the instruments used to detect and quantify the presence of atmospheric hazards be maintained in a reliable and ready state. Environmental factors such as shifts in temperature, humidity, vibration, and rough handling all contribute to inaccurate readings or outright failure of these instruments. Therefore it is critical to perform periodic calibration and pre-use bump testing to ensure the instruments are capable of providing accurate/reliable information to the operator.

Calibration of the monitor involves using a certified calibration gas in accordance with the manufacturer’s instructions. This includes exposing the instrument sensors and allowing the instrument to automatically adjust the readings to coincide with the known concentration of the calibration gas. Or, if necessary, the operator will manually adjust the readings to match the known concentration of the calibration gas.

In addition to using a certified calibration gas appropriate to the sensors being targeted, do not ever use calibration gas that has passed its expiration date. The best practice is to use calibration gas, tubing, flow rate regulators, and adapter hoods provided by the manufacturer of the instrument.

The frequency of calibration should also adhere to the manufacturer’s instructions for use; or, if more frequent, the set protocol of the user’s company or facility. Once the monitor has been calibrated, it is important to maintain a written record of the results including adjustments for calibration drift, excessive maintenance/repairs, or if an instrument is prone to inaccurate readings.

Each day prior to use, the operator should verify the instrument’s accuracy. This can be done by completing a full calibration or running a bump test, also known as a functional test. To perform a bump test, use the same calibration gas and equipment used during the full calibration and expose the instrument to the calibration gas. If the readings displayed are in an acceptable range compared to the concentrations of the calibration gas, then that is verification of instrument accuracy. If the values are not within an acceptable range, then a full calibration must be performed and repairs/replacement completed as necessary.

Modern electro-mechanical direct reading atmospheric monitors have come a long way in recent years in terms of reliability, accuracy, and ease of use. But they are still relatively fragile instruments that need to be handled and maintained with a high degree of care. The fact that we rely on these instruments to detect hazards that may be colorless, odorless, and very often fatal should be reason enough to motivate us to complete a very strict schedule of instrument calibration/maintenance and pre-use bump testing.

For more information on this subject, please refer to the November 20, 2002 ISEA position Statement “Verification of Calibration for Direct Reading Portable Gas Monitors Used In Confined Spaces”; “Are Your Gas Monitors Just expensive Paperweights?” by Joe Sprately, and James MacNeal’s article as it appears in the October 2006 issue of Occupational Safety and Health magazine.
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Industrial Rescue I/II…Practical Skills, Industrial Focus

Monday, January 03, 2011

Industrial Rescue I/II…Practical Skills, Industrial FocusNew for 2011! Practical skills training with a focus on compliance, but without the certification testing.

We’ve had many requests for a course that provides the skills, techniques and problem-solving scenarios for industrial rescue without the NFPA certification testing. Focusing on OSHA compliance, Roco’s new Industrial Rescue I/II will prepare rescuers and rescue teams for industrial confined space and elevated rescue as well as “rescue from fall protection.” Here’s more…

INDUSTRIAL RESCUE I/II (50 Hours)

This course offers a very practical, hands-on approach to industrial rescue that will provide the skills necessary to meet OSHA compliance guidelines for a competent rescue team or rescue team member.

Participants will be taught safe, simple and proven techniques that will allow them to effectively perform confined space and elevated rescues from towers, tanks, vessels and other industrial structures. Rescues from simulated IDLH atmospheres requiring the use of Supplied Air Respirators and SCBA will also be practiced. This course is designed for all rescuers, both industrial and municipal, who may be required to handle confined space rescues in industrial settings. It also includes Rescue from Fall Protection (rescue of suspended workers) as well as OSHA Authorized Entrant, Attendant and Supervisor training.

The problem-solving scenarios can be used to document annual practice requirements in representative spaces as required by OSHA 1910.146 and as referenced in NFPA 1006. For training conducted at Roco’s training facility, scenarios will be completed in all six (6) types of confined spaces. At other sites, the number of types completed will depend on the availability of practice spaces.

OSHA 1910.146(k)(2)(iv)
Ensure that affected employees practice making permit space rescues at least once every 12 months, by means of simulated rescue operations in which they remove dummies, manikins, or actual persons from the actual permit spaces or from representative permit spaces. Representative permit spaces shall, with respect to opening size, configuration, and accessibility, simulate the types of permit spaces from which rescue is to be performed.

NFPA 1006 A.3.3.38 Confined Space Type
Figure A.3.3.38* shows predefined types of confined spaces normally found in an industrial setting. Classifying spaces by “types” can be used to prepare a rescue training plan to include representative permit spaces for simulated rescue practice as specified by OSHA. (*Roco Confined Space Types Chart)
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What does it mean when my atmospheric monitor gives negative or minus readings?

Thursday, December 02, 2010

At some point, most atmospheric monitors will display a “negative” or minus reading for a flammable gas or toxic contaminant. First of all, it is not actually possible for an atmosphere to contain a “negative amount” of a substance. These negative readings usually result from improper use of the monitor.

Most monitors will “Field Zero” or “Fresh Air Calibrate” its sensors when powered on. Because of this, it is very important to power on the unit in a clean, fresh air environment away from confined spaces, running equipment or other possible contaminants. Otherwise, the monitor may falsely calibrate based on the contaminant that is present.For example, a monitor that is powered on in an atmosphere that contains 10 ppm of a contaminant and then moved to fresh air may display a reading of minus 10 ppm. Even more troublesome, if that same monitor is then brought to a confined space that actually contains 25 ppm of the contaminant, it may display a reading of only 15 ppm. As you can see, this could easily lead to the improper selection of PPE for the entrant and result in a confined space emergency.

As always, it is very important to consult with the manufacturer of your particular atmospheric monitor in order to determine how to use it properly. Don’t take any chances with this critical part of preparing for confined space entry or rescue operations.
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Is there a regulation requiring rescuers to use respiratory protection that is “one level higher” than that required for the entrants?

Thursday, November 18, 2010

To our knowledge, there is no regulatory requirement. However, we’ve heard this before and have used it as well when stressing the importance of proper PPE for rescuers, particularly when IDLH atmospheres may be involved. Here’s our thinking… if the entrant’s PPE did not provide adequate protection and he or she is now requiring rescue assistance, then using their “same level of protection” isn’t going to protect you either!

What triggers the use of a greater level of protection? This comes from the rescuer’s assessment of the hazards – including the use of an independent atmospheric monitor from that used by the entrant(s). That’s why it’s so important for the rescue team to provide their own atmospheric monitoring equipment. It also illustrates why written rescue preplans are so important – you need to preplan what equipment and techniques will be required well in advance of an emergency. It’s critical; the PPE selected must be adequate to protect the rescuers.

When preparing rescue preplans, you must also take into consideration any unusual hazards or circumstances that may arise from any work being done inside or near the space. For example, special cleaning solvents might be used or other hazards may be introduced into the space by the workers. Referencing and understanding the MSDS as well as “listening to what your monitor is telling you” are key factors in PPE determination.

OSHA does mention, however, if the atmospheric condition is unknown, then it should be considered IDLH and the use of positive pressure SCBA/SAR must be used. This will protect you from low O2 levels and other inhalation dangers; however, you must also consider LEL/LFL levels. Other factors include non-atmospheric conditions as well. For example, have you considered “skin absorption” hazards and what precautions must be taken?

So, the bottom line, the decision to go with breathing air for rescuers can be determined from your hazard assessment; or, in some cases, by company policy; and even required by OSHA when there’s an unknown atmosphere involved. Remember, it’s much better to be safe than sorry!
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