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Ski Patrol > Hill Safety > Flashcards

Hill Safety Flashcards

1
Q

ANSI

A

American National Standards Institute
ANSI B77.1-2006

Working under:
State of Calif. consumer affairs; 
Aerial Tramways Division
US Forest Service
Insurance carriers for the resorts
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2
Q

Types of Signs

A
  1. Information
  2. Regulatory
  3. Hazard Warning
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3
Q

Sign needs

A

Be seen, read & understood

Constructed placed and maintained sa as not to create more of a problem than they solve

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4
Q

Hazard Marking

A

Mark Hazards so skiers can avoid them

Prevent snow-grooming/making machinery and personnel from hitting the hazard

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5
Q

Ski Lift Categories

A
  1. Surface Lifts
  2. Tows
  3. Aerial Lifts
  4. Reversible aerial trams
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6
Q

Why have Loading Areas

A

Line Control - safe & fair loading
Ticket checking
Area for final approach

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7
Q

Types of Mazes

A

Straight box type maze

Serpentine box maze

Fan Type Maze

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8
Q

Straight box maze

A

Needs someone to control the lanes

Check tickets before entering maze

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9
Q

Serpentine Box maze

A

No one needed to control line

Check tickets before entering maze

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10
Q

Fan type Maze

A

Ticket checker in middle

Lanes move together, requires no control

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11
Q

Line Control construction

A

Mazes/waiting Areas
Level
Bring skiers to the lift so they are facing uphill and parallel to the haul rope

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12
Q

Loading Area specifications

A 
Waiting area as Level as possible
Final approach -1 to -2*
Loading area level
Height of chair ~18+2"
Spacing for a double 4 to 6 seconds
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13
Q

Loading area signage per ANSI

A 
Remove pole straps from wrists
Check for loose clothing & equip
Loading seat height 18 +-2"
Wait here
Load here
Keep ski tips up
Authorized Personnel Only - motor room
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14
Q

Look and Listen on Lifts

A 
Waves oscillation/Vertical 
Deflection/horizontal
Sheaves. Squeaks and grinding
Cross arms and towers
Cracks, bends, broken parts
Unusual sounds
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15
Q

Unloading area signage

A 
Prepare to unload
Ski tips up
Unload here
Stop Gate
Authorized Personnel Only - motor room
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16
Q

Chair slippage

A

18” max

Look for a chair with unusual slippage

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17
Q

Types of Chair connectors

A

Fixed grip interwoven
Fixed grip clamped
Detachable grip

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18
Q

Deropement Indication basics

A

24 volt AC system
At each tower a closed relay will open if Deropement occurs.
A warning light on control panel lights

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19
Q

Types of Deropement indicators

A 
Brittle bars - Cards
Rope Proximity Detector. RPD
Forks
Tower switch
Sheave assembly plug
Counter weight switches
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20
Q

Sheave trains

A

Support sheaves
Compression sheaves
Grounding sheaves

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21
Q

Chair Clearences

A

Chair needs min 8’ Clearence wo riders. ANSI B77.1

13’ with riders winter
10’with riders summer
5’ to sides

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22
Q

Morning Hill Check out

A

Notice if Ice in parking areas, walkways & steps
Snow on roofs
Dress & equipment for weather
Check patrol room for hazards
Sign in check out radios
Patrollers ready 60 min before resort opens - boots on

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23
Q

Who directs ANSI for signage standards?

A

CAL OSHA
Insurance Carrier
Forest Service

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24
Q

What lift manufacturers are at Snow Summit?

A

Dopplemeyer/CTEC

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25
Q

Lift control systems

A

PMD displays tower faults by tower number

Christmas tree shows path of chair from entry to exit in bull wheel area. Checks distance and alignment of chairs.

Communication by dedicated line and area phone backup.

26
Q

Auxiliary Power Unit. APU

A

All are gas large Bloch V-8

27
Q

Motor locations on Snow Summits Lifts

A

Loading area. 3 4 5 8 9 10 11

Unloading area. 1. 2 6 7

28
Q

Brakes on Lifts

A

Service brake. Disc or drum on shaft
Emergency brake. Hydraulic disc on bullwheel
Anti-rollback brake.detachable hydraulic disc on bullwheel Cogs with dropping dogs

29
Q

Anti-Roll Back Brakes/Devices

A

Cogs with drop bars

Hydraulic disc on bullwheel

30
Q

Brittle bars - ‘L’ Cards. How do they work?

A

24 volt AC system, if the system has a break the chair shuts down. Brittle Bars or cards are plastic with a wire running around them. If the haul rope hits a card it breaks the card and the circuit. Card failure can be overridden but only to evacuate the chair. Cards must be replaced if broken. Located above the sheave train and in the rope catcher.

31
Q

Rope Detector. RD How do they work?

A

Mounted btw 1&2 sheaves on uphill and downhill sides of each tower the RD uses a laser over the haul rope. Any change in position of the haul rope by as little as a few mm will change the Reflected signal of the laser which indicates an impending Deropement, the lift shuts down. The RD can be reset in the control room.

32
Q

Forks. How do they work?

A

The fork is a heavy gauge wire covered with rubber. When a haul rope Deropes, the rubber rubs off causing a short that in turn shows as a tower fault and the chair shuts down.

33
Q

Tower switch. How do they work?

A

Mounted to the outside of the sheave train ahead of the rope catcher, the tower switch has lever the haul rope will hit during a Deropement. The switch shuts down the chair

34
Q

How does a tower plug system work?

A

On towers that allow the sheave train to rotate, a plug is installed in the assembly. In the event of a Deropement the sheave train rotates and the plug is unplugged shuting down the chair. The cup is protection against UV Rays corroding the switch.

35
Q

Haul Rope Construction

A

6 outer metal braids wound in right handed twist surrounding a hemp or plastic core. The core allows flexibility for the haul rope to go around the bull wheel.

As the core breaks down from compression and tension on the wire rope the diameter of the haul rope decreases. Annual checks for stretch and changes in diameter.

36
Q

Counter weight types

A

Actual weights, block of reinforced concrete. Suspended by cables to the bull wheel carriage. The carriage Moves as weight in the chair changes and for thermal expansion.

Hydraulic pneumatic tensioning rams apply hydraulic pressure to the bull wheel carriage, a charge of nitrogen gas allows for dynamic tensioning while the lift is operational.

37
Q

Counter weight tensioning

A

For actual weights there are sensors front and back that limit the movement of the bull wheel carriage, these can be repositioned as needed.

For Hydrolic systems the piston can add or remove tension as needed.

The sensors also act as a Deropement shut down device.

38
Q

Personal Safety

A 
Dress for expected weather
Aware of activities scheduled
Consider your physical condition
All equipment checked and good working order: radio skis
Attend AM briefing
39
Q

Guest Safety

A

Watch for guest who are have difficulty:
Clothing, run selection, etc
Be proactive to help a guest

40
Q

Incident Scene Sizeup

A

Approach scene size up.
Yard sale, tracks in snow, POP, POI, POR, MOI, traffic patterns, hazards, call for help. 64/65, lift, terrain, premise, ski school

41
Q

Missing Persons

SAR

A

12 & under missing person becomes a SAR in 2 hours

Over 12 24 hours to SAR

Description & name over radio, name on board top of chairs 1&2 to report to patrol

BASTARD search at closing
Bathrooms & Runs at sweep

42
Q

Detachable Lift control read outs

A

PMD - tower faults listed

Christmas Tree - detach area faults.
Laser detectors note slight changes in position of haul rope and timing btw chairs

L cards are back up on detachables. Faults show as regions

43
Q

How often is APU tested?

A

1/2 hour per month hooked up

5 minutes per week un hooked

44
Q

What is a hazard? How marked?

A

A hazard is anything that could cause harm to a guest that may be difficult to see. They are usually marked with fencing, but. boo, boo & banner guard may also be used.

45
Q

When is fencing used to mark a hazard?

A

If the hazard can not be easily seen or if added safety is desired as around SMIs fencing is added

46
Q

What speeds do the lifts operate?

A

Lifts for beginners run slower ~120/min to 160’/min
intermediate~250 to 350’/min
Detachables ~800’/min

47
Q

Lift Manufacturers

A 
Doppelmeye/CTEC 1&2
Yan. None
Riblet
Hall
Poma
48
Q

How do Rabbit Ears work?

A

Rabbit ears are a switch located on the bullwheel carriage. When the haul rope hits the rabbit ears the switch shuts off the lift.

49
Q

How many carriers on chair 1, chair 2?

A

Chair one has 138 carriers.

Chair two has 121 carriers.

50
Q

What is the purpose of hill safety?

A

Provide a safe environment for our guests, employees and ourselves.

51
Q

Super Sweep

A

Not done at Summit as we have snowmobiles on site

52
Q

10 Essentials

A 
Matches
Cord
Knife
Light
Solar blanket
First Aid
Water
Food
Compass
53
Q

Names of terrain features

A

Jax
X wing
Wiseman

54
Q

Magic Carpet Signs

A 
Check for loose clothing, equipment hair
Do not crowd 6' between guests
Load here
Prepare to unload
Unload here
Do not walk on lift
Stand up
Tips up
Do not get off lift except at top
55
Q

Operation of snowmobile

A 
25 mph
Downhill only in terrain parks
Beepers and 6' flag
AM check all belts and fluids frozen?
Park perpendicular to fall line
Park to protect guest/scene or to protect snowmobile
56
Q

Parts of a lift tower

A 
Mast
Cross bar
Sheaves 
Ladder
Halo
57
Q

Tallest span

A

Lift 1 towers

Feet

58
Q

Compression sheeves at Snow Summit

A

Rare if any on our Lifts

59
Q

Risk definition

A

The possibility that an activity, skiing, can lead to a loss.

60
Q

Accident definition

A

An undesirable or unfortunate happening that occurs unintentionally and usually ends in harm

61
Q

Tenants of Common Carrier Law

A

Providers Must give a reasonable degree of skill
Convence must be safe & fit for use
Guest are to be treated civilly & with a reasonable degree of attention

Ski Patrol (5 decks)

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