Free Environment, Health, and Safety Magazine September 2024 / October 2024
Free Environment, Health, and Safety Magazine June 2024
Ensuring Safety at Heights: The Importance of Fall Protection
Falls are one of the leading causes of serious work-related injuries and deaths. Recognizing the critical nature of this hazard, the Occupational Safety and Health Administration (OSHA) has established comprehensive guidelines and regulations to mitigate the risks associated with working at elevated heights. Understanding and implementing these fall protection measures is essential for safeguarding workers' well-being across various industries.
Understanding Fall Protection
Fall protection encompasses a range of practices designed to prevent workers from falling off overhead platforms, elevated workstations, or into holes in the floor and walls. OSHA mandates fall protection at specific elevations across different industries: four feet in general industry workplaces, five feet in shipyards, six feet in the construction industry, and eight feet in longshoring operations. Additionally, regardless of height, fall protection is required when working over dangerous equipment and machinery.
Key Measures to Reduce Falls
Employers must create a safe working environment by incorporating several protective measures:
- Guarding Floor Holes: Every floor hole into which a worker can accidentally walk must be guarded using railings, toe-boards, or floor hole covers.
- Guard Rails and Toe-Boards: These should be installed around every elevated open-sided platform, floor, or runway to prevent accidental falls.
- Protective Barriers: Regardless of height, if there is a risk of falling into or onto dangerous machines or equipment, guardrails and toe-boards must be installed to avert potential injuries.
- Additional Fall Protection Tools: Depending on the job, other measures such as safety harnesses and lines, safety nets, stair railings, and handrails may be necessary.
Employer Responsibilities
OSHA requires employers to adhere to several critical responsibilities to ensure fall protection:
- Provide Safe Working Conditions: Employers must ensure that working conditions are free of known hazards.
- Maintain Clean and Dry Floors: Keeping floors in work areas clean and dry, as far as possible, reduces the risk of slips and falls.
- Personal Protective Equipment (PPE): Employers are responsible for selecting and providing the necessary PPE at no cost to workers.
- Training: Workers must be trained about job hazards in a language they understand, enabling them to recognize and avoid potential fall hazards.
Industry-Specific Standards
Fall protection standards vary across industries. For the construction industry, specific OSHA standards address various aspects of fall protection, including the use of scaffolds, ladders, and safety nets. For non-construction activities, general industry and maritime standards outline the necessary fall protection measures. Employers should familiarize themselves with these standards to ensure compliance and enhance workplace safety.
Resources and Compliance
OSHA provides a wealth of resources to aid employers and workers in understanding and implementing fall protection measures. These include publications, fact sheets, compliance assistance materials, and training programs. Participating in initiatives like the National Safety Stand-Down, an annual event to raise awareness about fall hazards, can further reinforce a culture of safety.
In conclusion, fall protection is a critical component of workplace safety. By adhering to OSHA's regulations and implementing comprehensive fall protection measures, employers can significantly reduce the risk of falls and ensure a safer working environment for all employees. For more detailed information and resources on fall protection, visit the OSHA Fall Protection page.
Lost Time Injuries due to a failed mooring line (July 2022)
What happened?
A vessel was mobilising and was moored stern to the quayside. It was moored with one aft mooring rope at each side and thruster control from the vessel, to maintain position while the load-out operations were carried out. During a pause in the work, three crew members were gathered at the stern of the vessel discussing the next part of the job, when the port aft mooring line failed. The line ‘snapped back’, striking and injuring two of them. They were taken to hospital.
The incident resulted in two LTIs, in which the injured persons were off work for over three days. One person suffered severe concussion at the scene (was awake but confused) and needed four stitches on the ear and experienced muscle pain in neck. The other person suffered muscle pain in the back and neck and dizziness in the days after the incident.
The incident was considered high potential as it could have resulted in more severe injuries including at least one fatality.
What went wrong
- The mooring line failed as a combination of several factors described below;
- The stern to berth mooring was not covered by the Risk Assessment for the mobilisation.
What were the causes
The following causes all contributed to the incident:
- It was believed that the right amount of thrust was being applied to the vessel by the bridge team;
- There was friction on the rope from the rail on the quayside;
- The crew involved thought they were standing in a safe area;
- The length of the port aft mooring line had been shortened to take up the slack;
- It was easier (less work, more convenient) to moor via the dolly rather than the Panama fair lead.
Lessons learned
- Upgrade CCTV cameras used for monitoring the mooring lines with cameras with better resolution, and if possible, with zoom capability, to improve the visual overview presented to the bridge team;
- There should be risk assessments to cover the safest means of stern to quay mooring including:
- suitability of quay facilities and mooring arrangements for future loading of mooring spread
- identification of snap back areas and ensuring personnel are aware of these areas (line of fire)
- use of protection for mooring lines
- Use of gangway.
- Decide which mooring line protection materials will be needed and provide a supply of these on the vessels (NB use of protection will be determined by risk assessment).
Our member took the following actions
- Ensure that the stern to berth mooring operation is fully and suitably risk assessed to cover all relevant scenarios;
- When arrangement on quayside allows, route the mooring line directly to chock on hull side (green line) instead of over guide roller on the stern (red line) to avoid line of fire/snapback zone on working deck. (see illustration).
Safe Use of Ladders and Stepladders
The Ladder Association, in co-operation with the UK Health and Safety Executive (HSE) has published Guidance Document LA455 on the safe use of ladders and stepladders, found here: https://ladderassociation.org.uk/la455/.
In the UK, falls when working at height remain a common kind of workplace fatality, accounting for around a quarter of all worker deaths and 8% of all non-fatal injuries every year, with many involving a fall off a ladder. It’s essential that people use the right type of ladder for a task and know how to use it safely. The guidance is for employers on the simple, sensible precautions they should take to keep people safe when using portable leaning ladders and stepladders in the workplace. It will also be useful for employees and their representatives.
It covers such areas as:
- When is a ladder the most suitable equipment? “As a guide, if your task would require staying up a leaning ladder or stepladder for more than 30 minutes at a time, it is recommended you use alternative equipment. You should only use ladders in situations where they can be used safely, e.g. where the ladder will be level and stable, and can be secured (where it is reasonably practicable to do so).”
- Who should use a ladder at work?
- Checking your ladder before you use it – make use of pre-use checklists
- Using your ladder safely – simple precautions can minimise the risk of a fall;
- What about the place of work where the ladder will be used – guidance on where a ladder should and should not be used;
- What are the options for securing ladders?
- What about ladders used for access?
- What about the condition of the equipment – ensuring “that any ladder or stepladder is both suitable for the work task and in a safe condition before use. As a guide, only use ladders or stepladders that:
- have no visible defects. They should have a pre-use check each working day;
- have an up-to-date record of the detailed visual inspections carried out regularly by a competent person. These should be done in accordance with the manufacturer’s instructions.
- are suitable for the intended use, i.e. are strong and robust enough for the job;
- have been maintained and stored in accordance with the manufacturer’s instructions.”
- Credit: https://www.imca-int.com/safety-events/safe-use-of-ladders-and-stepladders/
Safety Alert : Left Hand Caught in Between Mud Pump Liner &. Piston
Title: Left Hand Caught in Between Mud Pump Liner &. Piston.
Location: Jack Up Drilling Rig.
Loss/ Outcome: Hand Injury.
BRIEF OF INCIDENT
Drilling of 12 ¼” hole section was in progress and both the mud pumps were running. Suddenly mud leak from middle piston was observed. Operation was suspended to replace the liner & piston. Drilling crew replaced the liner and subsequently installation of piston assembly was taken up. Injured Person (IP) was holding the piston assembly for alignment with liner, while other three crew members were manually rotating the crank shaft to push the piston cup inside the liner. During this activity, the hand glove of the IP got stuck between piston cup and liner inner surface. The crew, who were rotating the crankshaft could not stop crank shaft immediately and piston continued to move inside the liner, which resulted major injury to left hand of the IP. Crew stopped the movement of the crankshaft and removed the left hand of the IP and shifted him to the rig dispensary. After providing first aid, IP was finally shifted to base for treatment.
OBSERVATIONS/ SHORTCOMINGS
- Job Safety Analysis was not carried out before the commencement of the liner-piston replacement job. The risk involved and their role to mitigate the risks was not explained to young officers.
- Among the available drilling crew members, only shift In-charge (IP) had some first-hand experience of replacement of mud pump liner and piston and other crew members only assisted during such jobs in the past.
- Shift In-charge (IP) himself was leading the team for this job and he deputed two crew members for the rig floor operation as drilling string was in open hole.
- While aligning the piston assembly with liner, the IP seemed to be incorrectly holding the piston rod very close to the piston cup.
- Due to limited man power, there was no independent supervision during the job.
REASONS OF FAILURE/ ROOT CAUSE
- Due to improper positioning of hand of IP on piston assembly for alignment, left hand of IP got caught between piston and liner.
- Adequate supervision was not available for this job due to shortage of manpower.
- Lack of experienced manpower for this job due to disruption of shift schedule caused by ongoing pandemic.
- Provided for information purpose only. This information should be evaluated to determine if it is applicable in your operations, to avoid recurrence of such incidents.
RECOMMENDATIONS
- Job Safety Analysis should be carried out in more focused manner. More so over, when new/ inexperienced crew members are in team or non regular crew are performing the job. Crew members may be unaware about the hazard associated with the operation they were carrying out.
- The crew should not be dependent on few individuals for such regular maintenance jobs. Other crew members should be trained under supervision of experienced crew to gain first-hand experience for such regular maintenance jobs.
- All Activities should be supervised by competent person(s)
Free Environment, Health, and Safety Magazine March 2021
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Safety Alert (06.12.2020) : Rigging failure – clump weight dropped to seabed
What happened?
A clump weight used for anchoring a weather buoy was being deployed over the sea when the long link chain attached to the vessel crane hook failed resulting in the clump weight dropping to the seabed.
The 2.6t clump weight was the anchor component of a mooring arrangement for the weather buoy. The load was rigged using a supplied mooring arrangement, which followed the manufacturer’s drawing in the weather buoy manual. Instead of a 450kg weight it was decided to use the 2.6 tonne clump weight already available and which had been shipped to the location for deployment. A service specialist prepared a deployment procedure which was discussed with those involved in the task. Shortly after the load was submerged in the sea the chain link attached to the quick-release mechanism snapped, and the load dropped to the seabed in an uncontrolled manner.
The findings revealed:
1) The rigging failed because a larger clump weight (2.6t) was selected than the design allowed for (450kg). This decision was based on previous experience where the standard weight (450kg) did not adequately secure the weather buoy;
2) The design and installation procedure were not revised to accommodate the heavier clump weight;
3) The chain selected was not suitable for lifting. Declaration of conformity by the chain manufacturer confirmed that the working load limit was “2.5 Tonne Not for lifting”.
Actions
1) All planned deviations from procedures should be subject to a formal Management of Change (MoC) process, the risk of the change adequately assessed and the change authorized by a competent person before the work proceeds;
2) Reinforce to the riggers and personnel involved in lifting operations:
3) The need for thorough lift planning, and,
4) That they make a thorough check that lift rigging is certified, fit for purpose and appropriate for that specific lift.
Safety Alert (02.12.2020) - Accident Due to Failure of Monorail Hoist
Title: Accident Due to Failure of Monorail Hoist
Location: Offshore Platform
Loss/ Outcome: Major Injury
INCIDENT
An incident took place where a team of eight persons were carrying out Engine replacement job. New PGC Engine, weighing approximately 1.63 Tons, was being lifted with the help of Monorail hoist to shift it to engine placing area. After lifting the engine to approximately two meters height, Monorail hoisting mechanism got stuck. While trying to release, its mechanism failed and engine came down on to the floor and left leg of Executive Engineer (Mechanical) was caught in between the engine and floor, resulting in the severe injury. He was shifted immediately to infirmary on stretcher. On board medical officer examined and gave first aid. Later he was sent to base for further treatment.
OBSERVATIONS
- Observed illumination in the area was poor for carrying out such major operations after sunset.
- Housekeeping of the area was very poor and a lot of accumulation of lube oil was observed on the floor in and around the PGC area.
ROOT CAUSE
- Operating mechanism failure of the Monorail Hoist, resulted in Engine coming down to floor.
RECOMMENDATIONS
1) Load testing of all the Lifting equipment is to be done as per their schedule and record of certificates/ details of the testing/ repairs done, to be maintained, for reference according to OISD-RP-126 clause 8 which states
- To ensure safe utilization of lifting tools & tackles, periodic inspection and testing as per applicable statutory rules and regulations applicable shall be carried out.
- Each lifting tool & tackle shall have unique identification and shall display the safe working load, testing date and next due date for testing.
- Records shall be maintained for verification
2) Illumination survey of the PGC area to be carried out and action to be taken accordingly, to improve the same for safe working according to OISD-RP-149, clause:9
3) Proper Housekeeping of the complete area to be carried out to make the area a safe working place.
4) Before taking up such major work, it should be ensured that people attending the job are in sound healthand stress free .