MFRI Site Ops Practice Test

These questions are part of the practice quiz. Start practicing

• How many degrees is suggested for the catenary angle when optimal conditions are met?
• What does the term "dynamic rope" refer to?
• What is the maximum stretch some dynamic Kernmantle ropes can experience before breaking?
• Nylon rescue ropes lose up to what percentage of their strength when wet?
• What is the primary use of webbing in rescue operations?
• During a bottom belay, where should the tagline be positioned?
• When repelling with a brake bar rack, how many bars should be engaged before loading the rope for descent?
• What are load sharing anchors?
• How many utility straps are required to fabricate a single line lowering bridle for a Stokes basket?
• What interior angle within an anchor system results in a load equal to 100% on each leg of the anchor?
• Why is it important for the rescuer to determine the total number of patients at the scene?
• In the rule of 18, what does it mean if the number of rescuers multiplied by the number of mechanical advantage systems exceeds 18?
• What does ensuring reasonable span noise factors promote within site operations?
• What does NFPA stand for?
• What benefit does a D-shaped carabiner provide in rescue operations?
• What does a one person rope support?
• Utility straps are crucial for which of the following in rescue operations?
• What is the minimum number of pulleys required for a 2:1 mechanical advantage system with a change of direction and safety?
• During a lowering operation, where will the majority of your teeth be positioned?
• What standards should any harness used for rescue operations meet?
• What determines the effectiveness of managing span noise during operations?
• What does abrasion refer to in climbing context?
• What is a double pulley with a center plate called?
• Which component is critical to ensuring a safe rigging system during operations?
• What type of rope is typically used in rock climbing and mountaineering?
• What do descent control devices do during repel or lowering operations?
• What is the rated strength of a large steel locking D carabiner?
• What is considered good practice when releasing a scene to a responsible party?
• When should a personal accountability report (PAR) be conducted?
• For what two specific reasons are control lines used?
• What role does the belayer play in a rescue scenario?
• In all engineering challenges, what two aspects stabilize the anticipated outcome?
• What is a Prusik hitch used for?
• What happens if the descent control device (DCD) is not locked off?
• What is one key function of CEN standards regarding climbing equipment?
• What is the top priority during a rescue situation?
• Which type of pulleys are not designed to move within a haul system?
• When utilizing two anchor points at an angle of 90° with a 100 lb load, what is the amount of weight on each anchor point?
• What characteristic is essential for a one person rope?
• In a fixed brake system, where is the descender attached?
• When attempting to manage span noise, which of the following is essential?
• What does a continuous whistle blast typically signal?
• Who is referred to as the belayer?
• Under what condition should you use an emergency move for a patient?
• What does the term 'pretension' refer to in a rope system?
• What is involved in creating a 3 to 1 mechanical advantage?
• Which hand is referred to as the control hand when repelling?
• What does the 3 sigma method help to calculate?
• When does a critical incident stress debriefing (CISD) begin?
• What is a good starting point for pretension of a single track line rope system?
• How many independent anchors should primary life support lines have?
• What is the purpose of a piggyback system in rigging?
• What is the number one priority for all rescue personnel during a rescue operation?
• What is the primary purpose of a scene investigation?
• How long should webbing be for lashing a patient into a stokes basket?
• Which of the following best describes the role of the incident commander related to the span of control?
• In a whistle signal system, what does four short whistle blasts mean?
• What is an ascender used for in rescue operations?
• What is the recommended catenary angle when loaded, under optimal conditions?
• What is the maximum load a two person rope can support?
• What is the primary function of a load control line in a highline system?
• What command is used for less tension on the rope indicated by the rescuer to the belayer?
• What safety factor is used to calculate the tensile strength required by the NFPA for rope?
• If a 100 lb load can be moved using slightly more than 50 lb of force, what is the mechanical advantage (M/A)?
• When using a 3:1 M/A system, how does load movement affect rope length pulled?
• In change of direction components, what happens to the force added to the system as the angle widens?
• What should be done in case of a hazardous material incident?
• What is a key characteristic of suitable equipment for managing span noise?
• What is the role of the European Committee for Standardization (CEN)?
• What is the purpose of an escape rope?
• What is a sheave in the context of rigging?
• According to NFPA 1983, what is the minimum breaking strength for a new one-person light use/life safety rope?
• Where is the offset blade positioned when using a simple block and tackle for lowering?
• What is Block Creel Construction in rope making?
• Is it advisable to make a rescue attempt regardless of the safety hazards to the rescue team?
• Which command would you use to indicate to the team to lower a load?
• What is the significance of having two separate anchor sites in a rope system?
• Which section does not report directly to command in the incident management system?
• Why is it important to consider the creep of a rope during prolonged use?
• What factor determines the classification in size of a pulley?
• What equipment is necessary for operating a belay system?
• In a mechanical advantage system, which pulleys are responsible for creating the mechanical advantage?
• What is meant by 'creep' in relation to climbing ropes?
• What is the recommended span of control for effective management in rescue operations?
• In rope rescue operations, what is a primary concern when using equipment?
• According to the NFPA, what tensile breaking strength should a life safety rope used for a single person load have when working with a 15-1 safety factor?
• What is the purpose of a tagline on a highline?
• Which device is specifically designed for moving loads that can vary in weight during movement?
• What happens to the force on anchor points as the angle becomes greater when two anchor points are used?
• What does the term "set" refer to when the haul team eases tension on a ratchet cam?
• In shared anchor systems, the narrower the angle created by the force vector, the _______ the force on its anchors.
• In a situation requiring signaling for help, which whistle command is most appropriate?
• What responsibility does a qualified rescuer have when providing medical treatment to a victim?
• During lowering operations, what should be avoided to ensure safety?
• What is the rated strength of an SMC large steel locking D carabiner?
• Which type of knot is most appropriate for climbing safety?
• What does block creel construction in rope manufacturing refer to?
• What does maintaining a straight back and using leg muscles help prevent during lifting?
• What is the primary function of the incident's span of control?
• What is the purpose of a figure 8 bend?
• What does three short whistle blasts instruct the team to do?
• During a rescue operation, what must rescuers ensure regarding communication?
• What is the preferred material for strapping and securing victims in a litter?
• To maintain an effective operational site, what aspect should be prioritized along with equipment and staffing?
• What is essential for maintaining the integrity of rescue rope?
• What is the principle behind mechanical advantages in rescue systems?
• Why is it important to ensure communication equipment is backed up?
• Which of the following is a characteristic of rescue ropes?
• When rappelling to perform a victim rescue in a high angle setting, to what part of the rescuer system should the victim's weight be attached?
• What is a brake bar rack primarily used for?
• What is one advantage of selecting a suitable site for operations management?
• What organization is responsible for setting performance standards for climbing equipment?
• What is the maximum slope degree for a low ankle rescue?
• According to NFPA standards, what should the pencil breaking strength of a life safety rope be for a single person load with a 15-1 safety factor?
• In a rescue scenario, what is the primary consideration when determining the number of rescuers?
• How is a two person load defined in terms of weight?
• What is suspension trauma?
• What function does friction serve in descent control devices?
• When setting up a safe and redundant rope system, how many separate anchor sites should be utilized when possible?
• What should you have due to the fragility of communication equipment?
• What is the recommended construction type for a 1-inch tubular weapon?
• When using a stokes basket, what determines the method used to lower the basket either horizontally or vertically?
• What is a defining feature of dynamic Kernmantel rope?
• A catenary angle of which degree ensures safe loading under normal conditions?
• Why are load-distributing anchors used in rigging?
• How does the load on a pulley affect its mechanical performance?
• Who has the authority to stop operations if deemed necessary?
• Which of the following best describes the function of a brake bar rack?
• What are cam-type ascenders recommended for?
• In a simple 3:1 mechanical advantage system, how much rope would be pulled if a load drops 50 feet down a 200-ft vertical shaft?
• What does input force refer to in the context of rope usage?
• Which cording configuration can act as a rope grab for rigging purposes?
• What action should be taken when a patient is in immediate danger from fire?
• How is the brake bar rack advantageous in descent procedures?
• Which whistle signal indicates to the team to stop the process immediately?
• In shared-anchor systems, what happens to the force as the angle created by the force vector narrows?
• What is the mechanical advantage (M/A) if a 200 lb load can be moved using slightly more than 50 lb of force?
• Is using harsh detergent to clean ropes and webbing considered acceptable practice?
• What is a dynamic rope designed to do?
• Which knot is preferred for tying two rescue ropes of equal diameter at the end?
• What posture should be maintained when lifting patients?
• What word should be encouraged for anyone on the rescue team to use at any time?
• How many utility straps are used in the fabrication of a single line lowering bridle for a Stokes basket?
• How often should ropes be inspected according to safety standards?
• In addition to a suitable site, what else is vital for effective operations management?
• What is the primary issue when using Kevlar in rescue ropes?
• What does the term “traveling” refer to in a mechanical advantage system?
• What is the NFPA standard for fire service life safety rope components?
• What is the minimum major axis breaking strength for personal/light-use carabiners and snap links with the gate closed?
• How should resource allocation be prioritized in a rescue operation?
• What aspect of rope rescue is considered the most critical?
• What is the preferred choice for the bars on a brake bar rack?
• What is NOT used as a self-rescue knot?
• Why is it important to maintain a safety factor in life safety ropes?
• When is it recommended to use triangular screw links?
• What does descent control in repelling mainly rely on?
• Why is having plenty of people considered beneficial in site operations?
• When is triage necessary during an incident?
• What can happen to a person experiencing suspension trauma?
• What is critical when releasing responsibilities to a property owner after a scene investigation?
• What kind of loading should triangular screw links be used for?
• How is load capacity determined for rescue equipment according to NFPA 1983?
• As the load on a pulley bearing increases, what happens to its friction coefficient?
• In rigging, what type of failing condition necessitates a backup system?
• What is mechanical advantage calculated by when counting the number of lines connected to the load?
• Which system might be used when it is necessary to have an improvised seat harness?
• What defines a horizontal highline system?
• What is the primary characteristic of static rope?
• Where should the rope be positioned during a body delay?
• Which factor is most critical for ensuring effective span noise management?
• How is the simple mechanical advantage determined?
• What type of workload is a life safety rope intended for according to NFPA guidelines?
• What is the maximum tensile strength required for a life safety rope based on a typical safety factor?
• Why should safety be prioritized in rope rescue operations?
• Which of the following factors can negatively impact the catenary angle when loaded?
• What is the primary purpose of assessing noise factors in a given site?
• In a whistle command system, what does one short whistle blast indicate?
• Which knot is typically used to join two pieces of rope together?
• What is an 'anchor knot' commonly referred to as?
• How should a locking carabiner or life safety belt hook be wrapped?
• What is the primary fiber used to manufacture rescue rope?
• What does the single rope technique (SRT) allow a climber to do?
• When performing a pick-off, how should the victim's weight be distributed?
• What is the primary function of a water knot?
• Which aspect of site operations does span noise directly relate to?
• What describes a brake bar rack?
• What does the Union of International Alpine Associations (UIAA) focus on?
• What is the diameter range of a small diameter rope referred to as accessory cord?
• In terms of safety, what must be ensured during group rescues?