Isolated replacement and threading of an identified film roll on an automatic pallet stretch wrapper using the actual manufacturer-permitted roll-change position and procedure.
Hold for uncertain energy boundaries, possible upstream or remote restart, unsupported carriage, unknown roll dimensions or mass, damaged rollers or guards, incorrect threading, repeated film tearing or people within the machine envelope.
Reference content written and revised with AI. It has not been verified or approved by a professional. Review by a suitably qualified professional and site approval are required before use.
1. Legal and technical scope
Apply OSHA 1910.147 to covered servicing exposure from unexpected energization, startup or stored energy and 1910.212 to applicable guarding. The minor-servicing exception is conditional on the specified routine, repetitive and integral activity plus effective alternative protection; frequency alone does not establish an exception. This scope deliberately uses isolated roll replacement.
Determine Federal OSHA or the applicable OSHA-approved State Plan, including public/private employer coverage. State Plans must be at least as effective and can impose different or additional requirements. The actual activity determines construction versus general-industry scope. Manufacturer instructions, consensus standards, project design and site approvals have distinct roles; this page is not a finding of nationwide compliance.
| Basis | Application and limits |
|---|---|
| OSHA 1910.147 | Covered servicing, energy-isolating devices, verification and the conditional minor-servicing exception. |
| OSHA 1910.212 | Guarding of applicable rotating and point-of-operation hazards. Obtain the actual manufacturer roll-change and threading instructions before work. |
2. Scope and required inputs
Included: Isolated replacement and threading of an identified film roll on an automatic pallet stretch wrapper using the actual manufacturer-permitted roll-change position and procedure.
Separate review: Live film splicing, defeated interlocks, unvalidated special operating modes, elevated access, carriage repairs and changes to control-system safety functions require separate procedures.
| Input | Required evidence |
|---|---|
| Identify wrapper boundary | Wrapper and conveyor IDs; Remote and automatic commands; Roll width core and winding; Mass and handling assistance |
| Isolate and support | Isolation points and custody; Carriage support and gravity; Residual pressure and motion; Upstream restart prevention |
| Install and thread | Width core and winding match; Film path and roller condition; Cutter and pinch-zone control; Retainer and roll seating |
| Hand over production | Wrapper and film identification; Machine functional acceptance; Load-quality status; Receiving operator and holds |
Identify the wrapper, turntable or rotating arm, carriage, cutter and connected conveyor boundaries. Confirm the designated change position, electrical and pneumatic sources, gravity and stored motion, mechanical supports, roll width, mass, core and winding direction, threading diagram and safe restart procedure. This JSA uses isolated roll change and does not assume a minor-servicing exception.
3. Eight-stage JSA
P = likelihood; S = severity; R = risk under the site method; A = acceptance or authorization as defined by the site. Leave these blank until actual assessment and control verification. A low score does not override a legal requirement, product limit or unreleased hold point.
| Job stage | Hazards and effects | Failure factors | Required controls | Site verification | P | S | R | A |
|---|---|---|---|---|---|---|---|---|
| 1. Identify wrapper boundary | 1. Remote unexpected start2. Conveyor crush3. Wrong film application4. Unreviewed roll handling | 1. Upstream control omitted2. Linked machine still active3. Roll specification unknown4. Mass not checked | 1. Identify connected equipment2. Define isolation boundary3. Match film and machine4. Plan supported roll handling | 1. Wrapper and conveyor IDs2. Remote and automatic commands3. Roll width core and winding4. Mass and handling assistance | ||||
| 2. Position and stop | 1. Rotating-arm strike2. Carriage pinch3. Cutter injury4. Worker in motion envelope | 1. Person enters during positioning2. Wrong change position3. Cutter cycle unreviewed4. Visibility obstructed | 1. Clear area before positioning2. Use designated change position3. Stop by actual procedure4. Confirm complete motion stop | 1. People outside machine envelope2. Carriage change position3. Arm turntable and cutter state4. Stop and command status | ||||
| 3. Isolate and support | 1. Unexpected rotation2. Gravity carriage drop3. Pressure release4. Stored-motion contact | 1. Control stop used alone2. Carriage unsupported3. Pneumatics not isolated4. Residual energy unverified | 1. Apply energy-control procedure2. Use specified mechanical support3. Control pressure and stored energy4. Verify safe state before entry | 1. Isolation points and custody2. Carriage support and gravity3. Residual pressure and motion4. Upstream restart prevention | ||||
| 4. Remove supported roll | 1. Dropped roll2. Finger crush3. Handling strain4. Sharp-edge cuts | 1. Retainer released unsupported2. Hands beneath roll3. Heavy roll lifted alone4. Damaged core or edge | 1. Support before release2. Keep hands clear of pinch zone3. Use suitable handling assistance4. Inspect removed roll and holder | 1. Support and release sequence2. Roll mass and lifting aid3. Core spindle and retainer4. Safe old-roll storage | ||||
| 5. Install and thread | 1. Roller entanglement2. Cutter contact3. Film tear on restart4. Roll release | 1. Energy control lost2. Hands cross cutter path3. Wrong winding or routing4. Retainer incomplete | 1. Maintain verified isolation2. Use actual threading diagram3. Match film specification4. Secure roll and retainers | 1. Width core and winding match2. Film path and roller condition3. Cutter and pinch-zone control4. Retainer and roll seating | ||||
| 6. Restore and test | 1. Person struck by arm2. Guarding failure3. Tool ejection4. Unstable pallet load | 1. Person remains inside2. Guard not restored3. Tools left in machine4. Wrapping quality assumed | 1. Account for people and tools2. Restore guards before restart3. Announce controlled test4. Check film and load separately | 1. Clear envelope and tool count2. Guards and protective functions3. Authorized restart sequence4. Film application and load condition | ||||
| 7. Hold repeated tearing | 1. Hand caught in rollers2. Unexpected automatic start3. Interlock bypass injury4. Repeated defective wrap | 1. Film guided while moving2. Pending command ignored3. Gate switch defeated4. Cause not investigated | 1. Stop and isolate again2. Prohibit hand guiding in motion3. Preserve protective functions4. Review roll path and settings | 1. Tear location and timing2. Roll and roller condition3. Threading and settings basis4. Corrective action and retest | ||||
| 8. Hand over production | 1. Unsafe automatic restart2. Loose roll release3. Unaccepted load dispatch4. Lost machine restriction | 1. Release scope unclear2. Retainer check missing3. Machine test equals load release4. Defect left verbal | 1. Confirm normal configuration2. Record roll seating and guards3. Separate load acceptance4. Transfer defects and limits | 1. Wrapper and film identification2. Machine functional acceptance3. Load-quality status4. Receiving operator and holds |
4. Hypothetical scenario and failure mechanisms
Retained source illustration: an AI-generated educational concept, not a real incident photograph or evidence of equipment suitability.The following scenario, comparisons and example records are hypothetical teaching material. They do not reproduce actual incidents, measurements, signatures or approvals.
| Item | Hypothetical situation |
|---|---|
| Initial state | The film tears again during a controlled trial after a roll change. |
| Change | The operator opens the gate and reaches toward the film path while an automatic request remains pending. |
| Failure path | The operator intends to guide the film by hand while another person restarts the cycle. |
| Possible harm | Carriage, pre-stretch rollers, cutter or rotating machinery can trap the hand or strike the person. |
| Barrier | Stop, isolate again and investigate the roll, threading, roller condition and settings before a guarded test with the area clear. |
A stop command, open gate or selected manual mode may interrupt motion while energy and pending commands remain available. Identify the connected conveyor and remote-start boundary, isolate the relevant sources and verify the safe state before access.
Carriage position does not prove mechanical support. Follow the designated change position and control gravity, pneumatic pressure and stored motion before placing hands in the roll or cutter area. Do not use an improvised prop.
The same-looking film roll may differ in weight, width, core or winding direction. Support the roll before releasing its retainer, use appropriate handling assistance and thread only according to the actual machine diagram.
A satisfactory guarded cycle checks wrapper function but does not establish pallet load stability. Record film application and load condition separately. Repeated tearing requires another isolated investigation, not hand guiding or interlock defeat.
| Decision | Reason and evidence |
|---|---|
| Known facts | The operator opens the gate and reaches toward the film path while an automatic request remains pending. |
| Unresolved | The operator intends to guide the film by hand while another person restarts the cycle. |
| Hold reason | Hold for uncertain energy boundaries, possible upstream or remote restart, unsupported carriage, unknown roll dimensions or mass, damaged rollers or guards, incorrect threading, repeated film tearing or people within the machine envelope. |
| Evidence needed | Width core and winding match; Film path and roller condition; Cutter and pinch-zone control; Retainer and roll seating. |
| Next decision | Stop, isolate again and investigate the roll, threading, roller condition and settings before a guarded test with the area clear. |
5. Conditional decisions and common errors
| Condition | Action | Evidence | Proceed when |
|---|---|---|---|
| Remote boundary unclear | Hold entry and map restart sources. | Machine and line isolation plan. | Safe state verified. |
| Carriage support uncertain | Hold work beneath or within its path. | Manufacturer support method. | Gravity controlled. |
| Film tears again | Stop and reisolate. | Film path, rollers and settings. | Cause corrected and tested. |
| Trial successful | Complete separate load checks. | Guarded function and load records. | Both decisions recorded. |
| Comparison | Situation A | Situation B |
|---|---|---|
| Gate open | Energy and restart sources are isolated and verified. | The gate switch is treated as isolation. |
| Film tear recurs | Cause is investigated under isolation. | A worker holds film during automatic motion. |
6. Roles and responsibilities
| Role | Responsibility |
|---|---|
| Work supervisor | Confirm scope, task sequence, exclusion and stop authority. Coordinate identify wrapper boundary with affected operations. |
| Technical reviewer | Resolve the actual design and equipment limits: Wrapper and conveyor IDs; Remote and automatic commands; Roll width core and winding; Mass and handling assistance. |
| Work crew | Perform isolate and support using the approved procedure; report any mismatch before proceeding. |
| Inspector / assessor | Verify Clear envelope and tool count; Guards and protective functions; Authorized restart sequence; Film application and load condition. Record what was actually checked and what remains unresolved. |
| Release / receiving authority | Confirm Wrapper and film identification; Machine functional acceptance; Load-quality status; Receiving operator and holds. Transfer restrictions and the next permitted stage. |
These are responsibility examples, not invented statutory credentials. Meet the actual training, competent-person, qualified-person and licensing requirements for the assigned work. Anyone may raise a hazard and request a stop; only the designated authority may release the affected stage after evidence is reviewed.
7. Hold points and record comparison
| Hold point | Evidence before release | Confirmation / approval |
|---|---|---|
| HP-0 Start | Scope, jurisdiction, equipment identity, responsible people and emergency arrangements. | |
| HP-1 Identify wrapper boundary | Wrapper and conveyor IDs; Remote and automatic commands; Roll width core and winding; Mass and handling assistance | |
| HP-2 Isolate and support | Isolation points and custody; Carriage support and gravity; Residual pressure and motion; Upstream restart prevention | |
| HP-3 Install and thread | Width core and winding match; Film path and roller condition; Cutter and pinch-zone control; Retainer and roll seating | |
| HP-4 Hand over production | Wrapper and film identification; Machine functional acceptance; Load-quality status; Receiving operator and holds |
Hold points are internal evidence gates. They do not replace statutory permits or actual signatures. Recheck affected gates after a change, abnormal event or shift transfer. The blank record must identify the evidence, person, time, limits and release scope.
| Record | Insufficient record | Record checklist |
|---|---|---|
| Boundary | Machine stopped | □ Wrapper and conveyor IDs□ Remote and automatic commands□ Roll width core and winding□ Mass and handling assistance |
| Isolation | Gate open | □ Isolation points and custody□ Carriage support and gravity□ Residual pressure and motion□ Upstream restart prevention |
| Threading | Film fitted | □ Width core and winding match□ Film path and roller condition□ Cutter and pinch-zone control□ Retainer and roll seating |
| Release | One cycle passed | □ Wrapper and film identification□ Machine functional acceptance□ Load-quality status□ Receiving operator and holds |
The □ boxes are static prompts, not saved or interactive approvals. Each checks one record element. A tick alone does not establish suitability or permission to restart. Link equipment IDs and supporting records; retain unresolved matters and the earlier record when conditions change.
8. Site checklist and emergency response
| Check item | Result | Person / action |
|---|---|---|
| Wrapper and conveyor IDs | ||
| People outside machine envelope | ||
| Isolation points and custody | ||
| Support and release sequence | ||
| Width core and winding match | ||
| Clear envelope and tool count | ||
| Tear location and timing | ||
| Wrapper and film identification | ||
| Emergency arrangements and unresolved restrictions communicated |
Stop work: Hold for uncertain energy boundaries, possible upstream or remote restart, unsupported carriage, unknown roll dimensions or mass, damaged rollers or guards, incorrect threading, repeated film tearing or people within the machine envelope.
Emergency response: Use the emergency stop from a safe location, prevent further movement and call 911 for entrapment or serious injury. Rescue requires controlled energy and supported moving parts; do not defeat an interlock or reverse motion without the planned rescue assessment.
9. Sources and review limits
Official-source review date: October 14, 2026. The following review is limited to the public provisions or selected manufacturer material identified below. It does not establish that any authority approved this article or the actual installation.
- OSHA 1910.147: Covered servicing, energy-isolating devices, verification and the conditional minor-servicing exception.
- OSHA 1910.212: Guarding of applicable rotating and point-of-operation hazards. Obtain the actual manufacturer roll-change and threading instructions before work.
- OSHA State Plans: jurisdiction and coverage overview; identify the actual state program before use.
Paid consensus standards and site-specific calculations, manuals, inspection records and product certificates were not independently obtained or verified unless specifically identified. Korean legal citations remain in the preserved Korean source as source history; they are not represented as US legal duties.
10. PDF guidance and FAQ
PDF A covers basic task controls; B examines technical failures; C focuses on supervision, evidence and handover. Each has six rows and three items per main cell. They are complementary extracts: apply all eight body stages and the applicable site procedure. An omitted stage is not permission to omit its controls. PDF HP-0 through HP-4 are worksheet labels; match the event, evidence and authority rather than assuming they match another permit by number.
P/S/R/A, actual measurements, confirmations and signatures remain blank. The PDFs are uncompleted reference worksheets, not issued work permits.
Content group ID: jsa-stretch-wrapper-film-change
Is opening the gate enough for changing a roll?
No. This method requires the actual isolation procedure and verification of gravity, pressure and restart hazards.
Is a routine roll change automatically exempt from lockout?
No. The OSHA minor-servicing exception is conditional; this JSA does not establish that it applies.
Can someone guide film while the wrapper runs?
Do not reach into the machine during motion. Stop and isolate to investigate tearing.
Does a successful test cycle approve the pallet for shipment?
No. Confirm the separate load-stability and wrapping-quality criteria.
Has a professional verified or approved this document?
No. This is AI-assisted reference material. Editorial and layout checks are not a physical inspection or professional technical approval. Obtain qualified professional review and required site approval before use.
11. Revision history and authorship
Reference content written and revised with AI. It has not been verified or approved by a professional. Review by a suitably qualified professional and site approval are required before use.
This system has not physically inspected the equipment, structures, ground, atmosphere or worksite. The document does not replace legal advice, manufacturer procedures, engineering design, inspection certificates, qualification evidence, the site risk assessment or an actual work permit.
Before use, a suitably qualified and authorized person must review the actual equipment, loads, methods, protection, inspection and emergency arrangements and resolve open issues. Record the real reviewer, organization, qualifications, delegated authority, reviewed documents, date, signature, exclusions and conditions of approval separately.
| Date | Version | Change | Review status |
|---|---|---|---|
| 2026-09-25 | 1.0 | Korean source revision retained in the source snapshot. | Historical editorial status; not US professional approval. |
| 2026-10-14 | US 1.0 | US localization of the assigned Korean source; task reasoning, educational image and history retained; US scope and sources reviewed. | AI-assisted editorial work; professional approval not performed. |