Compressor Installation and Levelling JSA

Receive and set a compressor package, isolate electrical and pressure sources, adjust specified supports and shims, verify fastening and pipe-connection effects, and hand over the mechanically installed package.

Hold adjustment for unknown foundation, support points, energy boundaries or pressure state. Stop for jack descent, shim movement, base distortion, changed readings after tightening or pressure reaccumulation.

AI-generated reference material. It has not been professionally verified or approved. Before use, a suitably qualified person must review and adapt it to applicable Singapore requirements, the actual equipment and site, and approved safe work procedures.

1. Legal and technical scope

Apply Singapore WSH risk management, lifting planning and machine-energy controls to package movement and levelling. Coordinate power and remote-start isolation with the appropriate EMA-licensed electrical worker where electrical work is involved. Check connected air-receiver registration/examination applicability through the owner and Authorised Examiner; a compressor package and a statutory pressure vessel are not interchangeable classifications. Mechanical installation acceptance does not release energisation or pressurisation.

Assess the actual activity under the applicable Singapore WSH requirements. Statutory duties, official guidance, manufacturer instructions and approved project documents have distinct roles. A site hold point is not automatically a statutory permit. Use competent local review to resolve the applicable industry, installation, access and permit requirements.

2. Scope and required inputs

Included: Receive and set a compressor package, isolate electrical and pressure sources, adjust specified supports and shims, verify fastening and pipe-connection effects, and hand over the mechanically installed package.

Separate review: Adjustment while running, access beneath hydraulic support alone, unauthorised anchor or isolator changes, pressure testing and startup require separate procedures. Grouting depends on the actual model and design.

Use actual package and foundation drawings, rated lifting/support equipment, mount orientation, shim specification, anchor procedure and measured datum. Check model-specific ventilation, drainage and maintenance clearance. Do not prescribe grout or anchoring for every package. Obtain appropriate electrical-work and pressure-system release separately.

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.

4. Hypothetical scenario and failure mechanisms

The following scenario, comparisons and example records are hypothetical teaching material. They do not reproduce actual incidents, measurements, signatures or approvals.

A level instrument reading does not establish contact and load sharing at every designed foot. Pulling a raised foot down with an anchor can distort the base instead of correcting its support.

A hydraulic jack provides adjustment and does not replace the required mechanical support during transfer. Verify every changing load path, keep hands outside gaps and control one operation at a time.

Compare readings using the same reference surface, points and instrument before and after fastening. Independent pipe supports and unstressed connections are necessary; investigate changed readings after piping rather than recording only the initial level.

Package foundations and anti-vibration arrangements vary. Follow the actual design and preserve maintenance and ventilation space. Coordinate the LEW isolation/connection boundary and the owner air-receiver file; neither a levelling record nor a receiver certificate alone releases the complete installation.

5. Conditional decisions and common errors

6. Roles and responsibilities

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 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.

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

Stop work: Hold adjustment for unknown foundation, support points, energy boundaries or pressure state. Stop for jack descent, shim movement, base distortion, changed readings after tightening or pressure reaccumulation.

Emergency response: Stop operation from a safe place and clear the package movement and pinch zone. Do not insert a hand-held shim or enter beneath unstable support. Have designated personnel control electrical supply and returning pressure. Activate the site emergency plan and call SCDF 995 for serious injury or urgent rescue. Use a separately reviewed stabilisation and recovery method.

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.

• MOM risk management: Official explanation: risk assessment, control, monitoring and communication for routine and non-routine work, including maintenance; reviewed 14 October 2026.
• WSHC Planning a Lift: Official lifting guidance: risk-supported lift plan, safe work procedure, permit arrangements, load/equipment/crew/environment details and stop when conditions differ. Confirm the applicable statutory permit scope separately.
• WSHC preventing machine hazards: Official guidance: hierarchy of controls, guarding, competent operators and maintenance LOTO. It is not a model-specific isolation instruction.
• WSHC electrical safety: Official guidance: maintenance energy isolation, stored-energy control, verification and reinstatement; electrical scope still requires applicable EMA authorisation.
• EMA worker licences: Official explanation of licensed electrical work, supervision and the distinction where equipment work involves no wiring. Actual electrical duties require the appropriate licence class.
• MOM pressure vessel registration: Official registration categories, exemptions and owner/AE documentation duties, including steam boilers and applicable boiler inspector arrangements. Mechanical placement is not registration or firing approval.
• Atlas Copco Singapore compressor-room design: Public placement, foundation, service-clearance and ventilation guidance. It is not the installed model manual; general website temperatures, airflow and installation suggestions are not universal acceptance criteria.
• SCDF emergency medical services: Official 995 emergency ambulance service information; use emergency services for actual emergencies.

Paid consensus standards and site-specific calculations, manuals, inspection records and product certificates were not independently obtained or verified unless specifically identified. Korean and overseas legal references are source history, not Singapore statutory duties. Singapore Standards and model-specific limits were not read in full unless expressly identified.

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-compressor-leveling

Does a level reading prove adequate support?

No. Verify contact and load sharing at the specified supports.

Can an anchor pull down a raised foot?

Correct the support defect using the approved method; do not force a distorted base into place.

Does every compressor need grout?

No. Apply the actual package and foundation design.

Must readings be checked after piping?

Verify the final condition as specified, because pipe forces and fastening may change the support and alignment.

Has a professional verified or approved this document?

AI-generated reference material. It has not been professionally verified or approved. Before use, a suitably qualified person must review and adapt it to applicable Singapore requirements, the actual equipment and site, and approved safe work procedures.

11. Revision history and authorship

AI-generated reference material. It has not been professionally verified or approved. Before use, a suitably qualified person must review and adapt it to applicable Singapore requirements, the actual equipment and site, and approved safe work procedures.

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.