aton structures Flashcards
There are currently over ? ATON structures in the USCG-wide?
22,000
What is a Major ATON structure?
Major ATON structures are complex in design and construction and usually require significant engineering effort, Ranges and large offshore lights would be typical examples of Major ATON structures
What is Minor Aton structures?
Minor ATON structures are relatively simple in design and construction, and are usually made of wood, concrete or steel piles. They can be either lighted or unlighted. Conducted by CG.
what is CG-43 and how does it refer to aton?
is the engineering support manager for the short range aids to navigation program. This office establishes engineering policy and procedures relevant to ATON structures, equipment, and systems; manages funding for ATON facility construction and maintenance; and oversees the execution of the AC&;I Waterways marine construction program.
What does Civil Engineering Units (CEUs).
CEUs perform engineering design of ATON structures and administer contracts for design and construction services. and oversee maintenance and repair activities. They are responsible for establishing climber training requirements and overseeing climber training. They purchase structure outfitting equipment and other supplies which become part of the final structure, including piles for WLIC construction activities.
Minor aton structures should have a focal plane height of ? above mean high water?
15- 17 feet
what are the three main aton structures built with?
wood, steel and concrete
For major aton structures and on a case by case basis what shall be used for protection?
Cathodic protection
what is fixity?
(where the pile is vertically stable and fixed in the soil) can be attained.
when is multiple piles required?
When the penetration required for fixity cannot be achieved, it may be necessary to use a multiple-pile structure. Multiple piles should also be used when there is a need to reduce vibration.
what are the three common types of piles?
Battered pile dolphin
cluster pile dolphin -
platform foundation-
What is the tethering method used for?
It is used to connect the piling when in heavy knockdown areas, so it won’t cause a hazard.
what are some other foundation types?
include posts, spindles, caissons, concrete footings, concrete slabs, steel stakes, and rip-rap.
If you are welding a tower what shall it be iaw?
American welding society guidelines
When steel towers are installed, never do what?
never place them into soil, they shall be properly designed for concrete foundations.
What are platforms designed to support? and what are the surface area requirements?
support for equipment and personnel that might be on the aid platform at one time. The platform shall have a surface area of no less than 16 square feet to allow for adequate working space for servicing personnel.
What is ASCE 7? and what factor must CG structure achieve?
This document give the reqirements for design loads on structures? Safety factore or four.
What is American Concrete institute? ACI 318
This document contains requirements for the proper design and construction of structural concrete buildings.
What are guardrails on aton structures and how many are there?
They are provided on each structure and consist of three, which is situation 1,2,3
What is situation 1?
Guardrails shall be provided along the edges of all MAJOR ATON structure platforms
What is situation 2?
Guardrails shall be provided along the edges of minor ATON structure platforms that are positioned over water, are designed or used primarily as a walking or working surface.
What are the characteristics for Situation 2?
Platform is fifteen feet or greater above MLW level.
Structure is situated over rocks or debris that may cause injury to personnel in a fall.
Structure is situated in less than four feet of water at MLW level.
what is situation ? and one characteristic?
Positioned over land, and designed for walking or working surface.
Platform is four feet or greater above lower level;
what are the Guardrail Design Requirements?
Guardrails shall consist of a top rail, intermediate rail, and posts (stanchions), and shall meet the following requirements:
Top rail shall have a vertical height of 42 inches nominal from upper surface of top rail to the platform +or- 3 inches. Along with the strength of 200 lbs of top pressure.
are fixed ladders provided on all aton structures? and are safety devices provided?
yes, ladder safety devices shall be provided on fixed ladders over 20 feet in unbroken length. If a ladder is not provided then a cage or well shall be used instead.
what are the fall arrest systems?
Fall restraint systems such as guardrails, ladder safety devices, and work positioning systems are typically the preferred fall protection methods
a dayboard shall be designed in a way that gives its maximum?
Utility
When heavy bird fouling, you should mount the dayboard vertically how many degrees?
5 on an angle to the channel line, but for a strait channel 30 degrees.
Every Aton structure that meets the MAJOR requirements shall be visited?
At least once every 5 yrs, by the CEU or the delegated CEU
what do you do if you pull up to an aton structure and it doesnt meet your climbing requirements?
- perform a Field unit maintenance inspection by pulling up to it.
- if unsat, document the information on a cg-6042.
- Casrep it and send report to District.
- Then fill out the SSMR( shore station main record) form cg-4094 stating this is beyond your repairs.
Climbers must complete formal CEU sponsored training before?
climbing any aton structure
What are the requirements for Climbers?
a. The individual must be a responsible volunteer.
b. The individual must be physically capable.
c. The unit commander must recommend the individual.
d. The individual must have written certification to climb ATON structures. This certification shall be issued from the servicing CEU, based on the individual’s successful completion of climber training
What is the Buddy system?
When climbing to a height of 150 feet or less, a safety observer is required on the ground. And must maintain 150ft at all times.
What is your required PPE for Climbing?
Helmet w/ chinstrap safety footwear eye protection and coveralls Lifejacket for aton structures or buoys
Do you wear the harness over the life jacket?
Yes
Can you use an inflating life jacket working aton?
Harnesses worn over inflatable PFDs can restrict the outward inflating action and may prevent breathing or cause crushing injuries to the upper torso.
what is fall protection?
being protected either by preventing a fall or controlling a fall and reducing the potential injury and trauma.
what is the fall restraint systems?
restrain from a fall hazard
- Guardrails
- Work positioning system- any means of connection and shall not allow a fall greater than 2ft.
- Ladder safety device- slides up and down a cable and is connected on the harness, use to climb up or down.
When engaging in maintenance, minor repair or inspection work on an ATON structure what height shall be used?
at a height of four feet or more above a lower level, climbers shall utilize effective fall protection as necessary to protect against the dangers of falling. ?
what are the fall arrest system components?
Anchorage System- secure point on a structure that can withstand forces exerted by the fall.
Connecting means- method used to connect the member to the anchorage pt to prevent the fall.
Body Support- straps that will support the fall.
Deceleration device- device such as rope grab, rip stop lanyard, lifelines etc.. that are connected to the D-Ring.
What is the ORM 1-5
- Identifying hazards
- Assessing hazards
- Developing controls and making decisions
- Implementing controls
- Supervising and Evaluating controls
PEACE model is used to identify those elements considered essential to the safe and effective execution of ops.
STAAR- outlines the potentialstrategies to mitigate and/or control risk.
Before exiting a safety climb device, you must determine the need for fall protection, what is the %?
100
When connecting? Never trust the sound of the ?
hook or connector
There are 5 rescue techniques?
- Manual rescue
- Outside services- which means know are your available sources to call.
- Winch rescue
- Ascending/Descending system- retractable device
- Approved suspension system- cheery picker
what are the wood pile sizes and treatment?
No preservative treatment is required if knockdown is expected within 12 months or less.
• Common pile lengths: 45’ to 60’.
what are the pile characteristics for steel?
Steel: 12” or 18” diameter steel pipe, or 12H53 “H” piling.
• Common lengths: 30’, 40’, 50’ and 60’.
what are the pile characteristics for concrete?
Concrete: 10”, 12”, or 14” square or octagonal shapes.
• Common pile lengths: 40’, 50’, and 60’.
What is pile tethering?
use 1/4 galvanized chain to attach the chain below the mudline and 5-10inches above to prevent the piling from becoming hazard.
Fall restraint has two methods what are they?
1.Fall restraint system
Ex: guardrails
2. Fall arrest sytem- shall not allow a fall greater than 6ft!
Ex: Safety harness
when climbing you shall maintain?
Use of a safety climb device requires that you keep three points of contact with the structure. Do not jump or hop.
During crossing and positioning, you must maintain ?
100% fall protection
100% connection to structure
100% attitude
What are some inspection tools?
Flashlight, camera, hammers, chisel, wire brush, tape measure, PPE, Binos.
How many overall assessment standards are there?
- Good
- Satisfactory
- Fair
- Poor
- Critical
On arrival checks a steel member may have a 30/40 yr old structure, so the splash zone corrosion scale may be?
3/4 to 1 in thick.
what are some Timber damage might cause?
Fungal rot, abrasion, connector corrosion
How many types of steel structure deteriorations?
6
corrosion, abrasion, fatigue, overloading, loss of foundation, loose hardware.
Single Piles wood are what lengths? Fixity
45’ and 60’
no treatment if knockdown is expected
Single pile steel are what lengths? no fixity
12 and 18 in diameter
30,40,50 and 60
Steel piles are what length? fixity
10, 12 and 14 square or octagonal shape
40 50 and 60
A multiple pile platform structure is used on marine sites normally as a foundation for a skeleton tower when the focal height of the aid is?
is over 30 ft, as with a range structure.
What form is used to conduct a formal inspection upon an aton structure visit?
Is there damage to the structure if so, who do you contact?
CG- 6042 - required by Comdt at every scheduled visit, but before every climb. if damaged and unit can repair, use 30 funds.
IF NOT:
Work with Sector, district
What is free fall?
Distance a climber will fall before any resistance is offered by fall arrest system. Determined by location of anchor pt in relation to dorsal D-ring.
NEVER ALLOW FREE FALL DISTANCE TO EXCEED 6FT!
Ex: 6ft lanyard anchored 2ft above dorsal d ring=4 foot free fall
6 ft lanyard anchored 1 ft below dorsal D-ring = 7ft free fall
Safety Observer must be?
- Present at any climbing evolution
- Certified Rescue Climber
- Free of other duties
- Able to view the entire evolution
- dressed out in PFAS gear
Maintain 2-way communication with climber:
* 150’ or less: maintain a suitable distance at base of structure.
* 150’ or more: joins primary climber on structure and remains within 150’ at all times.
* 150’ or less: maintain a suitable distance at base of structure.
150’ or more: joins primary climber on structure and remains within 150’ at all times.
- Enforce drop zone:
½ the distance of the highest climber.
Monitor weather:
- Suspend climb in winds over 20 kts.
- Suspend climbing if unable to visually see climber.
Monitor climber for fatigue.
Be familiar with emergency procedures;
*First Aid/CPR Quailified
*Know location of emergency medical equipment
*Know how/who to contact in event of emergency
Descent Devices Fisk Descender?
- Use ½” kernmantle rope with 10,000 lbs tensile strength.
- Used as a component of a rope descent system
- Descending
- Work positioning
- Rescue operations
- Do not use on descents exceeding 300’
Descent Devices I’D Descender?
- Used for descent control and rescue applications
- In-line unit does not twist line
- Automatic lock-off
- Panic stops
- If rigged incorrectly will lock off and not allow person to descend
Learn about endangered species in your AOR using the?
U.S. Fish & Wildlife Service
Build a work schedule and Federal Aid Information Document (FID) inspection dates around the
endangered species habits and/or breeding cycle, hibernation cycle, etc.
Identify the different types of protected species or habitat within your AOR to work an AID?
a. Consult with cognizant
dpw and sector staff.
b.Consult with cognizant dpw Civil
Engineering Unit (CEU)/Resource agency.
What do you do for Coral reefs in your AOR?
a. Determine a plan with the local agency.
b. Determine the type of Aid that can prevent the coral reefs from further damage, understand that the buoy or structure may cause a little damage but the risk will outweigh the gain.
The Living Marine Resources Program (LMRP) includes the
Coast Guard’s enforcement of treaties, laws, and regulations pertaining to activities that support conservation and recovery of species in peril and the management of fisheries, protected species, and marine protected areas.
Marine Mammal Protection Act
(MMPA)?
a.“Take” a marine mammal. Taking a marine mammal means to harass,
hunt, capture, collect, kill, or attempt to do any of these things. This
includes collecting dead animals or parts; feeding, restraining, or
detaining no matter how temporary;
b.
Endangered Species Act
ESA
.a. Import any endangered species into, or export any such species from,
the United States. Endangered species also include any products, eggs,
body parts, or dead bodies of any of the species on the list.
b. Take (harass, harm, pursue, hurt, shoot, wound, kill, trap, capture, or
collect) any endangered species within the U.S. territorial sea or upon
the high seas.
National
Marine Fisheries
Service (NMFS)
Search the NOAA Fisheries website for the following:
Five regions.
ESA regulations in regard to the 150 endangered and threatened
marine species.
Reason for temporary change arises: Dredging, testing, or evaluating new
aids; marking an obstruction; other reasons (a Coast Guard approved
intentional change to the authorized characteristics of an ATON).
DPW approves temp changes which is no longer than 6 months
Once you generate a work schedule in Iatonis? what does the info display?
Review the report. The report displays ATON by I-ATONIS LLNR), work area name, and aid number. It also displays the due dates for aid inspections, mooring inspections, hull relief,
and battery recharge.
Unit work areas defined in I-ATONIS do not always mimic the geographic bounds in the LL.
When adding aides to a work list in
I-ATONIS make sure they are within the geographic bounds desired by the unit.
