Checklist serah terima berbasis bukti
Acceptance test mesin refurbish bukan sekadar menyalakan mesin lalu melihat spindle berputar. Pengujian harus membuktikan ruang lingkup yang disepakati melalui criteria, method, instrument, test condition, actual result, evidence, status, witness, dan approval yang dapat ditelusuri.
Jawaban singkat
Acceptance test dinyatakan lengkap bila setiap deliverable yang disepakati memiliki kriteria penerimaan, metode dan kondisi pengujian, alat ukur yang sesuai, hasil aktual, bukti, status, serta pihak berwenang yang menyetujui. Mesin hidup, suara terasa normal, atau hasil potong terlihat baik belum cukup bila item kontraktual lain belum diuji.
Aturan integritas paling penting
Tanpa kriteria tidak ada dasar pass/fail. Tidak diuji bukan berarti lulus. Semua item yang belum diuji, tidak tersedia, dikecualikan, atau tidak applicable harus ditulis apa adanya beserta alasan dan dampaknya.
Tentukan basis penerimaan sebelum mesin diuji
Acceptance test sebaiknya dirancang sejak scope refurbish disepakati, lalu dikunci kembali sebelum final test. Dengan begitu, pemilik mesin dan penyedia jasa tidak baru memperdebatkan definisi “selesai” saat pekerjaan sudah mendekati serah terima.
Dokumen yang menjadi dasar
- Contract, PO, quotation, dan scope of work yang disetujui.
- Approved change, deviation, clarification, serta exclusion.
- Data OEM, drawing, manual, parameter, dan reference condition.
- Requirement produk, process capability, duty, dan intended use.
- Standard, internal procedure, atau test code yang disepakati.
Hal yang harus disepakati
- Test item, reference point, axis, speed, load, dan duration.
- Method, instrument, resolution, calibration status, dan evidence.
- Target/tolerance, decision rule, serta treatment of uncertainty bila relevan.
- Siapa yang melakukan, witnessing, review, dan approve.
- Ketentuan retest, punch list, conditional acceptance, dan warranty start.
Bila beberapa dokumen memberi requirement berbeda, buat daftar conflict dan tentukan precedence secara tertulis. Jangan memilih angka yang paling longgar atau paling ketat tanpa persetujuan karena acceptance harus mengacu pada basis yang diakui para pihak.
Delapan gate acceptance test setelah refurbish
Urutan berikut membantu mencegah test akurasi dilakukan saat prerequisite, safety, atau operating condition belum siap. Detailnya harus disesuaikan dengan mesin bubut, milling, CNC, special-purpose machine, dan scope aktual.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| Gate | Fokus | Yang diverifikasi | Contoh bukti | Keputusan sebelum lanjut |
|---|---|---|---|---|
| G0 | Scope freeze | Machine identity, contract/PO, scope, approved change, exclusion, criteria source, test plan revision, witness, dan sign-off authority. | Approved ATP, document register, responsibility matrix. | Scope dan criteria disetujui atau conflict dicatat. |
| G1 | Readiness & safety | Foundation/leveling readiness, utilities, lubricant, guard, workholding, housekeeping, permit, risk control, dan test authority. | Pre-test checklist, permit, photo, utility reading. | PASS / CONDITIONAL / STOP. |
| G2 | Workmanship & function | Assembly, fastener/marking, hose/cable, leak, direction, control, feed/speed range, lubrication, coolant, hydraulic/pneumatic, dan abnormal behavior. | Visual report, function sheet, video ID. | Function siap untuk measurement atau diperbaiki. |
| G3 | Geometry & runout | Agreed reference, level, straightness, parallelism, squareness, spindle/interface runout, dan machine-specific geometric relationship. | Measurement sheet, setup photo, instrument ID. | PASS / RETEST / CORRECTIVE ACTION. |
| G4 | Accuracy & repeatability | Axis positioning/repeatability bila applicable, backlash/reversal, dimensional performance, atau parameter lain dalam scope. | Raw data, analysis, instrument report. | Criteria terpenuhi atau adjustment/retest. |
| G5 | Dynamic, thermal & load | Vibration, temperature, speed/load condition, duration, stability, noise observation, leak, lubrication/cooling response, dan drift bila required. | Trend/log, test condition, measurement points. | Stable within agreed criteria atau investigation. |
| G6 | Sample cut | Approved drawing, material, tool, workholding, parameter, feature, surface/dimension, method, serta acceptance criteria. | Tagged specimen, inspection report, photo. | PASS / FAIL / RETEST tanpa meniadakan gate lain. |
| G7 | Handover & sign-off | Report, parts record, drawing, parameter backup, manual, training, warranty, punch list, retest evidence, exception, dan approval. | Handover dossier dan berita acara. | Accepted / Conditional / Rejected / Incomplete. |
Kolom wajib dalam Acceptance Test Plan
Checklist tanpa kolom evidence dan acceptance criteria mudah berubah menjadi opini. Satu baris test setidaknya harus dapat menjawab apa yang diuji, dengan cara apa, pada kondisi apa, dibandingkan dengan angka atau persyaratan mana, dan siapa yang menerima hasilnya.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| No. | Field | Yang harus ditulis | Mengapa penting | Status awal |
|---|---|---|---|---|
| 1 | Test ID | Kode unik yang konsisten dengan report, photo, raw data, punch list, dan retest. | Mencegah bukti tertukar. | BELUM DIISI |
| 2 | Object / characteristic | Komponen, axis, surface, function, point, direction, atau feature yang diuji. | Menghindari istilah umum seperti “spindle OK”. | BELUM DIISI |
| 3 | Requirement source | Contract/PO, scope item, drawing/revision, OEM, standard/clause, procedure, atau approved agreement. | Menentukan dasar acceptance. | BELUM DIISI |
| 4 | Precondition | Leveling, warm-up, ambient/machine condition, speed, load, tooling, lubricant, utility, serta safety prerequisite. | Hasil tanpa kondisi sulit dibandingkan. | BELUM DIISI |
| 5 | Method & setup | Langkah uji, datum/reference, measurement point, orientation, sequence, duration, dan repeat count. | Membuat pengujian repeatable. | BELUM DIISI |
| 6 | Instrument | Type, range, resolution, ID, calibration status/due date, fixture, dan software bila digunakan. | Menilai kesesuaian alat terhadap criteria. | BELUM DIISI |
| 7 | Criteria / tolerance | Target, upper/lower limit, decision rule, serta uncertainty treatment bila relevan. | Tanpa criteria tidak ada pass/fail. | BELUM TERKONFIRMASI |
| 8 | Actual result | Raw value, calculated result, unit, trend, observation, dan deviation—bukan hanya centang. | Menjaga objektivitas. | BELUM DIUJI |
| 9 | Evidence ID | Report page, file/photo/video ID, data logger file, sample tag, dan instrument printout. | Membuat hasil dapat ditelusuri. | BELUM DIISI |
| 10 | Status & disposition | PASS, CONDITIONAL, FAIL/RETEST, NOT TESTED, N/A, atau STOP beserta action. | Memisahkan hasil dari tindak lanjut. | BELUM DITETAPKAN |
| 11 | Performed / witnessed | Nama, role, organisasi, tanggal/waktu, dan signature/approval sesuai kewenangan. | Menetapkan accountability. | BELUM DIISI |
Checklist kesiapan sebelum measurement
Measurement yang teliti dapat menghasilkan kesimpulan yang salah bila dilakukan pada mesin yang belum stabil, foundation belum final, lubricant salah, atau setup pengukuran tidak didefinisikan.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| No. | Item kesiapan | Yang dikonfirmasi | Bukti minimum | Status |
|---|---|---|---|---|
| P1 | Identitas mesin | Type, make, model, serial/asset number, year, location, control/configuration, dan agreed scope. | Nameplate photo dan document reference. | BELUM DIISI |
| P2 | Completion review | Work order selesai, parts installed, adjustment/repair record, outstanding work, dan approved deviation. | Completion checklist dan parts record. | BELUM DIISI |
| P3 | Foundation & installation | Position, anchoring, leveling readiness, support, access, dan environmental influence sesuai plan. | Setup photo dan reading bila required. | BELUM DIISI |
| P4 | Utility | Electrical supply, phase/voltage/frequency, grounding/protective measures, compressed air, coolant, hydraulic, ventilation, dan other utility. | Utility checklist atau reading. | BELUM DIISI |
| P5 | Lubrication & fluids | Type/grade, level, flow/pressure, point distribution, filter, contamination observation, dan leak. | Fluid record dan visual evidence. | BELUM DIISI |
| P6 | Warm-up / stabilization | Agreed procedure, duration, speed/feed sequence, ambient and machine temperature, serta stabilization indicator. | Warm-up log. | BELUM DIISI |
| P7 | Safety readiness | Risk assessment, permit, authorized personnel, guarding, clamping, test exclusion zone, emergency response, dan stop criteria. | Approved safety/test authorization. | PASS / CONDITIONAL / STOP |
| P8 | Instrument readiness | Range, resolution, ID, calibration status, fixture, cleanliness, datum, software, dan operator competence. | Instrument list dan certificate reference. | BELUM DIISI |
| P9 | Sample-cut readiness | Drawing, material, stock condition, tool, holder, workholding, parameter, measurement plan, dan sample identification. | Approved machining test sheet. | N/A / BELUM SIAP / SIAP |
| P10 | Witness & data control | Test schedule, witness availability, file naming, raw-data storage, photo permission, report format, dan review route. | Witness list dan document-control plan. | BELUM DIISI |
Runout, geometry, dan accuracy: jangan dicampur
Istilah “runout”, “spindle accuracy”, “geometry”, “positioning accuracy”, dan “hasil potong” mengukur karakteristik berbeda. Tentukan object, datum, point, direction, method, speed/load, dan criteria masing-masing. ISO 230-1 membahas geometric accuracy pada no-load atau quasi-static conditions, sedangkan operational behavior seperti vibration dan stick-slip perlu diuji terpisah.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| Test ID | Characteristic | Yang harus didefinisikan | Contoh evidence | Criteria source | Result |
|---|---|---|---|---|---|
| M1 | Level / reference condition | Reference surface, axis direction, point/grid, instrument, foundation state, ambient condition, dan reading sequence. | Leveling sheet dan setup photo. | Contract/OEM/approved method. | BELUM DIUJI |
| M2 | Spindle/component runout | Surface or test mandrel, radial/axial direction, distance from face, rotation method/speed, seating/cleanliness, instrument, repeat count. | Dial reading/raw data dan photo. | Approved drawing/OEM/test code. | BELUM DIUJI |
| M3 | Axis-of-rotation error motion | Property required, sensor arrangement, speed condition, reference, calculation, dan specialist method. Jangan menyamakannya dengan component runout. | Specialist test report. | Approved ATP / applicable test code. | N/A / BELUM DIUJI |
| M4 | Lathe geometry | Bed/carriage travel, spindle-axis relation, cross-slide relation, tailstock alignment, test mandrel, datum, travel length, dan machine configuration. | Geometry sheet dan plotted reading. | Contract/OEM/ISO 1708 bila applicable. | BELUM DIUJI |
| M5 | Milling geometry | Table travel, spindle/table relation, squareness/parallelism, quill/ram/knee/column relationship, datum, travel length, dan configuration. | Geometry sheet dan setup photo. | Contract/OEM/ISO 1984 series bila applicable. | BELUM DIUJI |
| M6 | Straightness / parallelism / squareness | Axis, reference, measurement length, points, direction, reversal, instrument, calculation, dan environmental condition. | Raw values, graph, analysis. | Approved criteria. | BELUM DIUJI |
| M7 | Backlash / reversal behavior | Axis, location, direction, load/approach, control state, compensation state, method, repeat count, dan distinction between mechanical play and control behavior. | Reading sheet dan setting record. | Contract/OEM/approved limit. | BELUM DIUJI |
| M8 | NC positioning accuracy & repeatability | Applicable axes, target positions, travel, cycles, direction, warm-up, compensation state, instrument, uncertainty, dan analysis. | Instrument report dan raw file. | Contract/OEM/ISO 230-2 bila applicable. | N/A / BELUM DIUJI |
| M9 | Machining accuracy | Test piece, feature, tolerance, cutting condition, setup, measuring method, and distinction from unloaded geometry. | Tagged sample dan inspection report. | Approved drawing/process requirement. | BELUM DIUJI |
Tidak ada angka universal yang aman untuk ditempel ke semua mesin. Mesin bubut manual, milling konvensional, CNC, training machine, production machine, dan special-purpose machine memiliki configuration, intended use, reference, wear history, dan performance requirement berbeda.
Vibration, temperature, function, load, dan safety
ISO 230-1 secara eksplisit tidak mencakup operational testing seperti vibration, stick-slip, speed, dan feed. Karena itu dynamic dan functional test perlu ditulis sebagai kelompok terpisah dengan operating condition yang jelas. Nilai vibration atau temperature tanpa measurement point, orientation, speed, load, duration, instrument, dan reference tidak cukup untuk keputusan.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| Test ID | Area | Condition yang harus dicatat | Yang diperiksa | Evidence | Result |
|---|---|---|---|---|---|
| D1 | Spindle / drive function | Direction, commanded and actual speed where available, speed steps/range, no-load/load, duration, dan warm-up state. | Start/stop, direction, stability, abnormal behavior, brake/clutch/gear function bila applicable. | Function sheet, reading, video ID. | BELUM DIUJI |
| D2 | Feed / axis / slide | Axis, direction, manual/power feed, speed/range, travel, load, lubrication state, dan control mode. | Smooth movement, stick-slip observation, limit/overtravel function, feed engagement, reversal, dan abnormal noise. | Function record. | BELUM DIUJI |
| D3 | Vibration | Measurement point, orientation, quantity/unit, sensor mounting, instrument, speed, load, operating state, duration, background influence, dan criteria source. | Magnitude/trend/change as agreed; external vibration influence dan method limitation dicatat. | Raw file, plot, instrument ID. | BELUM DIUJI |
| D4 | Temperature / thermal behavior | Ambient point, component point, initial value, speed/load cycle, time interval, duration, coolant/lube state, stabilization rule, dan criteria source. | Temperature rise/trend, abnormal hotspot, drift required by scope, dan correlation with operating condition. | Temperature log/trend. | BELUM DIUJI |
| D5 | Lubrication | Oil/grease grade, level, pump cycle, pressure/flow if instrumented, distribution point, temperature, alarm, duration. | Delivery, leak, blockage indication, alarm/function, and post-test condition. | Checklist, reading, photo. | BELUM DIUJI |
| D6 | Coolant / hydraulic / pneumatic | Fluid/air condition, pressure/flow where applicable, command state, load, cycle, duration, dan connection. | Pump/valve/cylinder/clamp function, leak, stability, alarm, and return/drain behavior. | Function sheet dan reading. | N/A / BELUM DIUJI |
| D7 | Load / duty test | Approved load, speed/feed, workpiece/tool, cycle, duration, stopping criteria, monitoring points, dan responsible person. | Performance stability, overload/alarm, thermal/vibration response, lubrication/cooling, and abnormal condition. | Test log dan trend. | N/A / BELUM DIUJI |
| D8 | Electrical & control | Authorized procedure, supply condition, control mode, test equipment, personnel, and isolation/energization control. | Control device, indication, direction, alarm, protective function, bonding/insulation or other test only when included and competently performed. | Electrical test/function report. | BELUM DIUJI |
| D9 | Safety function | Risk assessment, intended sequence, machine state, safeguard, E-stop/interlock test method, reset/restart behavior, witness, dan stop criteria. | Guard/interlock, emergency stop, prevention of unexpected restart, warning/label, and other agreed protective functions. | Signed safety-function sheet. | PASS / FAIL / STOP / N/A |
| D10 | Shutdown / recovery | Normal stop, emergency condition where safely planned, power isolation/recovery, reset, stored energy, and restart authorization. | Safe stop, expected state, alarm recovery, no unintended movement, dan controlled restart. | Sequence result dan witness. | BELUM DIUJI |
Safety test bukan demonstrasi improvisasi. Jangan membuka panel, melepas guard, menyentuh rotating part, mengukur energized circuit, atau membuat kondisi fault tanpa personel kompeten, risk control, method, alat, dan authority yang sesuai.
Sample cut harus repeatable dan dapat ditelusuri
Sample cut dapat menunjukkan kemampuan proses pada satu setup tertentu, tetapi bukan shortcut untuk menyatakan seluruh geometry, spindle, electrical, thermal, atau safety lulus. Semua faktor yang memengaruhi hasil perlu dicatat agar retest dapat dibandingkan secara adil.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| No. | Data sample cut | Yang dicatat | Bukti | Status |
|---|---|---|---|---|
| S1 | Purpose & feature | Tujuan test dan feature yang dinilai: dimension, taper, roundness indication, flatness, squareness, surface, chatter, consistency, atau lainnya. | Approved test purpose. | BELUM DIISI |
| S2 | Drawing & criteria | Drawing number/revision, nominal, tolerance, surface requirement, sampling/measurement rule, dan decision rule. | Controlled drawing. | BELUM DIISI |
| S3 | Material / stock | Material grade, size, initial condition, heat treatment if relevant, quantity, dan sample ID. | Material/sample record. | BELUM DIISI |
| S4 | Tool & holder | Tool type/geometry/condition, insert, holder, projection, balancing if relevant, dan tool ID. | Tool setup sheet/photo. | BELUM DIISI |
| S5 | Workholding | Chuck/vice/fixture, jaw, clamping method/force where available, datum, alignment, dan support. | Setup photo dan record. | BELUM DIISI |
| S6 | Cutting condition | Speed, feed, depth/width of cut, coolant, pass sequence, warm-up, program/revision if NC, dan operator. | Parameter/program record. | BELUM DIISI |
| S7 | Measurement | Feature, point, method, instrument ID/resolution/calibration status, environment if relevant, dan measurer. | Inspection report dan raw data. | BELUM DIUJI |
| S8 | Result & retention | Actual value, unit, status, deviation, photo, sample tag, storage/retention, retest link, dan approval. | Tagged sample dan signed report. | PASS / FAIL / RETEST |
Dokumen serah terima yang perlu diminta
Mesin dapat bekerja hari ini, tetapi tanpa data as-left, parts record, setting, dan test evidence, tim maintenance akan kesulitan membedakan baseline normal dari kerusakan berikutnya. Handover dossier harus disesuaikan dengan scope dan kontrak, bukan sekadar kumpulan foto tanpa indeks.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| No. | Dokumen / record | Isi minimum | Verification | Status |
|---|---|---|---|---|
| H1 | Approved scope register | Contract/PO, quotation/SOW, change, deviation, exclusion, dan final deliverable mapping. | Revision dan approval sesuai. | BELUM DITERIMA |
| H2 | As-found / as-left report | Initial condition, finding, action, final condition, limitation, dan unresolved risk. | Machine identity dan evidence link konsisten. | BELUM DITERIMA |
| H3 | Parts & material record | Part name/number, brand/source where agreed, qty, serial/batch where relevant, installed location, repair/reuse/replace status. | Matches approved scope/change. | BELUM DITERIMA |
| H4 | ATP & test report | Approved method, criteria, condition, instrument, raw/actual result, evidence, status, deviation, witness, and approval. | Semua test ID closed atau disposition jelas. | BELUM DITERIMA |
| H5 | Instrument record | Instrument ID, range/resolution, calibration status/certificate reference, and test mapping. | Suitable for agreed measurement. | BELUM DITERIMA |
| H6 | Photo/video/data index | File ID, date, machine, test item, before/after, raw data, owner, and storage location. | Link dapat dibuka dan tidak tertukar. | BELUM DITERIMA |
| H7 | Drawing / diagram / setting | Updated mechanical/electrical/pneumatic/hydraulic drawing where included, parameter/setting list, and revision. | As-left state terwakili. | N/A / BELUM DITERIMA |
| H8 | Control/program backup | Parameter, PLC/CNC/program/recipe or configuration backup where included; media, format, version, restore responsibility. | Backup readability and ownership confirmed. | N/A / BELUM DITERIMA |
| H9 | Operation & maintenance handover | Operating limitation, lubrication, PM task/frequency, inspection point, consumable, spare recommendation, dan warning. | Applicable to final configuration. | BELUM DITERIMA |
| H10 | Training record | Topic, machine/configuration, trainer, participant, date, material, competency/acknowledgement as agreed. | Attendance and scope complete. | N/A / BELUM DITERIMA |
| H11 | Warranty & support | Coverage, exclusion, start/end trigger, reporting channel, response, parts/labor/travel treatment, and condition that may void warranty. | Consistent with contract. | BELUM DITERIMA |
| H12 | Punch list / NCR / retest | Finding, criticality, action, owner, due date, retest/closure method, evidence, status, and approver. | No hidden open item. | BELUM DITUTUP |
| H13 | Final sign-off | Machine, scope, ATP revision, result summary, exclusions, open items, acceptance status, warranty trigger, names/roles/date/signature. | Signed by authorized roles. | BELUM DITANDATANGANI |
Status acceptance dan aturan punch list
Gunakan status yang maknanya disepakati. Jangan memakai “OK” untuk item yang tidak memiliki data atau belum diuji.
Geser tabel ke kanan–kiri untuk membaca seluruh kolom.
| Status | Makna | Syarat penggunaan | Tindak lanjut |
|---|---|---|---|
| PASS | Result memenuhi criteria pada condition dan method yang disetujui. | Actual result serta evidence tersedia dan direview. | Close test item. |
| CONDITIONAL | Diterima sementara/bersyarat dengan punch list non-critical yang disetujui. | Tidak menyangkut safety-critical finding atau essential function; owner, due date, closure/retest, dan approval jelas. | Track hingga closed; dampak warranty/operation ditulis. |
| FAIL / RETEST | Result tidak memenuhi criteria atau test invalid. | Deviation, cause/investigation, corrective action, dan retest condition dicatat. | Repair/adjust/retest; jangan overwrite hasil pertama. |
| NOT TESTED | Item belum/tidak diuji. | Alasan, risk/impact, responsibility, dan rencana berikutnya dicatat. | Tidak boleh dinilai PASS. |
| N/A | Item memang tidak applicable pada configuration atau scope. | Justification dan approver ditulis. | Close sebagai N/A, bukan PASS. |
| STOP | Pengujian dihentikan karena unsafe condition, risk, atau prerequisite gagal. | Stop criteria dan finding terdokumentasi. | Make safe, investigate, authorize ulang sebelum test. |
Retest harus membuat record baru yang ditautkan ke hasil sebelumnya. Menghapus hasil gagal dan hanya menyimpan hasil akhir akan memutus audit trail serta menyulitkan analisis apakah corrective action benar-benar efektif.
Template ringkasan sign-off
Template berikut merupakan kerangka pengumpulan data, bukan berita acara hukum siap pakai. Redaksi legal, risk allocation, warranty, payment milestone, dan authority harus mengikuti contract serta kebijakan organisasi.
A. IDENTITAS Machine / asset : BELUM DIISI Make / model / serial : BELUM DIISI Location : BELUM DIISI Contract / PO / SOW : BELUM DIISI Approved changes : BELUM DIISI ATP number / revision : BELUM DIISI Test date / condition : BELUM DIISI B. BASIS PENERIMAAN Requirement sources : BELUM DIISI Criteria / tolerance register: BELUM DIISI Applicable exclusions : BELUM DIISI Instrument / evidence index : BELUM DIISI C. HASIL PER GATE G0 Scope freeze : PASS / CONDITIONAL / FAIL / NOT TESTED G1 Readiness & safety : PASS / CONDITIONAL / STOP / NOT TESTED G2 Workmanship & function : PASS / CONDITIONAL / FAIL / NOT TESTED G3 Geometry & runout : PASS / CONDITIONAL / FAIL / NOT TESTED / N/A G4 Accuracy & repeatability : PASS / CONDITIONAL / FAIL / NOT TESTED / N/A G5 Dynamic / thermal / load : PASS / CONDITIONAL / FAIL / NOT TESTED / N/A G6 Sample cut : PASS / CONDITIONAL / FAIL / NOT TESTED / N/A G7 Handover dossier : COMPLETE / INCOMPLETE D. OPEN ITEM DAN LIMITATION Critical finding : BELUM DIISI Punch list IDs : BELUM DIISI Not tested / excluded : BELUM DIISI Known limitation : BELUM DIISI Closure / retest plan : BELUM DIISI E. KEPUTUSAN Final acceptance status : ACCEPTED / CONDITIONAL / REJECTED / INCOMPLETE Authorized operating limit : BELUM DIISI Warranty start / condition : BELUM DIISI Next review / due date : BELUM DIISI F. APPROVAL Performed by : BELUM DIISI Reviewed / witnessed by : BELUM DIISI Owner/user representative : BELUM DIISI Supplier/service provider : BELUM DIISI Other authorized role : BELUM DIISI Names, roles, dates, approval : BELUM DIISI
Signature hanya sah dalam batas kewenangan penandatangan dan dokumen yang dirujuk. Sign-off sebaiknya menyebut open item, exclusion, known limitation, warranty trigger, dan attachment sehingga persetujuan tidak berdiri tanpa konteks.
Perlu menyusun scope acceptance test?
Kirim identitas mesin, scope refurbish, parts yang diperbaiki/diganti, contract atau quotation, fungsi dan accuracy yang dibutuhkan, requirement produk/drawing, criteria yang tersedia, lokasi, utility, test window, witness, serta dokumen serah terima yang diminta. PT MSP dapat membantu meninjau kelengkapan scope dan menyusun item pengujian yang relevan.
Pertanyaan yang sering diajukan
Kapan kriteria acceptance test harus ditentukan?
Idealnya saat scope refurbish disepakati, kemudian dikunci kembali dalam approved test plan sebelum final test. Criteria yang baru dibuat setelah hasil diketahui berisiko bias dan memicu sengketa tentang definisi pekerjaan selesai.
Apakah mesin yang sudah hidup berarti lulus acceptance test?
Tidak. Mesin hidup hanya membuktikan sebagian fungsi pada kondisi tertentu. Acceptance masih dapat memerlukan verification atas scope, runout, geometry, accuracy, feed/speed, vibration, temperature, lubrication, electrical, safety, sample cut, documentation, dan sign-off.
Berapa batas runout, vibration, atau temperature yang diperbolehkan?
Tidak ada satu angka universal untuk semua mesin. Limit harus berasal dari contract, approved scope, OEM, configuration dan intended use, product requirement, method, measurement condition, standard yang applicable, serta persetujuan para pihak.
Apakah sample cut dapat menggantikan geometry test?
Tidak. Sample cut menunjukkan hasil pada kombinasi mesin, tool, holder, workholding, material, parameter, operator, measurement, dan environment tertentu. Ia melengkapi, bukan otomatis menggantikan, geometric, functional, thermal, vibration, electrical, atau safety test.
Bolehkah mesin diterima dengan punch list?
Dapat dipertimbangkan sebagai conditional acceptance hanya untuk item non-critical yang disepakati, dengan owner, due date, closure atau retest method, bukti, limitation, dan approval yang jelas. Safety-critical finding atau kegagalan fungsi esensial tidak boleh disamarkan sebagai punch list minor.
Siapa yang harus menandatangani hasil acceptance test?
Pihak yang menandatangani harus berwenang sesuai contract dan tata kelola organisasi, biasanya mencakup wakil pemilik atau pengguna serta penyedia jasa, dengan reviewer, witness, QC, engineering, atau safety role sesuai kebutuhan. Nama, role, organisasi, tanggal, scope approval, open item, dan attachment perlu jelas.
Sumber rujukan teknis
Rujukan berikut dipakai untuk membedakan geometric, positioning, thermal, rotation-axis, vibration, serta safety review. Standard yang tepat bergantung pada type/configuration mesin, scope, intended use, contract, edition, dan applicability aktual.
ISO 230-1:2012 — Geometric accuracy of machine tools
Metode geometric dan machining tests pada no-load atau quasi-static conditions; operational tests seperti vibration, stick-slip, speed, dan feed berada di luar scope-nya.
ISO 230-2:2014 — Accuracy and repeatability of positioning of numerically controlled axes
Dapat digunakan untuk acceptance tests pada linear dan rotary NC axes melalui repeated measurements; applicability, amendment, method, dan uncertainty harus diperiksa.
ISO 230-3:2020 — Determination of thermal effects
Mencakup environmental temperature variation error serta thermal distortion akibat rotating spindle, moving linear axes, dan rotary motion sesuai scope standard.
ISO 230-7:2015 — Geometric accuracy of axes of rotation
Membedakan axis-of-rotation error motion dan speed-induced axis shifts dari surface/component runout, thermal shift, vibration, dan noise.
ISO 1708:1989 — Accuracy tests for general-purpose parallel lathes; ISO 1984-1:2001 dan ISO 1984-2:2001 untuk configuration milling tertentu.
Lathe/milling configuration aktual dan scope masing-masing standard harus cocok sebelum dijadikan basis criteria.
ISO 20816-1:2016 — General guidelines for machine vibration measurement and evaluation
Memberi general conditions/procedures termasuk konteks acceptance, tetapi criteria kelas mesin berada pada bagian lain dan halaman ISO menyatakan revisi sedang berlangsung. Jangan mengambil threshold tanpa memastikan applicability.
ISO 12100:2010, IEC 60204-1:2016+A1:2021, ISO 16090-1:2022, dan ISO 23125:2015.
Rujukan prinsip risk assessment, electrical equipment, safety milling/machining centres, serta safety turning machines. Applicability dan edition perlu diverifikasi untuk mesin aktual.
Catatan: Criteria, tolerance, measurement uncertainty, decision rule, environmental condition, safety control, contract interpretation, dan final acceptance harus ditetapkan oleh pihak kompeten serta berwenang berdasarkan proyek aktual.
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