What the data for this category looks like
Data related to document drafting for nuclear power operations is primarily sourced from operation logs, safety operation procedures, equipment maintenance reports, emergency response documents, and nuclear safety review documents. Data update rhythms fall into three categories: daily operation logs are generated and updated each day, equipment maintenance reports are updated upon completion of overhauls, and safety procedures and review documents are revised quarterly or during major changes.
Document structures include fixed chapter-style procedures (with chapter numbers and clause identifiers), unstructured operation records with timestamps and equipment identifiers, and technical reports containing charts and parameter tables. Fields include equipment ID, operation parameter value, anomaly level, and timestamp. Units include industrial standard units such as MPa, ℃, and hours.
What constraints these characteristics impose on document parsing and chunking
The long chapter structure of nuclear power documents requires chunking to retain logical context, preventing clause relevance from being broken after splitting. Timestamps and equipment identifiers in unstructured operation records are critical metadata, which must be extracted during parsing. Failure to do so means information sources cannot be traced after chunking. Large technical reports contain multi-page charts and parameter tables, which require longer parsing time, so sufficient processing time must be reserved. Frequently updated operation logs require fast parsing to avoid delays that affect subsequent workflows. Some encrypted or fixed-format PDF documents may not fully extract text and metadata with general-purpose parsing tools, requiring targeted configuration.
How to configure settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Nuclear power documents include long paragraphs and structured clauses. This range retains contextual relevance while avoiding overly long single chunks that harm retrieval accuracy |
chunkSplitter | Split by chapter | Nuclear power procedures and reports mostly use fixed chapter numbering structures. Splitting by chapter preserves document logical integrity and prevents forced clause splitting |
customPdfParse | Enabled | Nuclear power PDF documents often include encrypted watermarks and fixed-format headers/footers. Custom parsing can accurately extract text and metadata such as equipment numbers and timestamps |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Large nuclear power safety reports and technical documents require processing multi-page charts and parameter tables. 600 seconds covers parsing time for most documents |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Nuclear power documents often include multiple attachments and high-definition charts. The 1000 MB limit meets upload requirements for most large documents |
chunkSettingMode | Manual mode | Chunking parameters need adjustment for different document types such as operation logs, procedures and reports. Manual mode enables fine-grained configuration |
Three common misconfigurations
- Accessing the FastGPT login page from other devices on the local area network returns the error
net::ERR_INCOMPLETE_CHUNKED_ENCODING. The cause is that a locally accessible binding address is not configured, and only local loopback access is allowed, causing external requests to be interrupted. - Critical equipment parameters and timestamps are missing from chunking results. The cause is that the
customPdfParseconfiguration is not enabled, and general-purpose parsing tools cannot extract non-text metadata. - Uploading nuclear power documents larger than 1000 MB fails. The cause is that
UPLOAD_FILE_MAX_SIZEis set too low, exceeding the platform's allowed upload limit.
How to verify correct configuration
For FastGPT v4.17.0, confirm configuration effectiveness with the following actions:
- Upload a nuclear power operation procedure PDF, view the parsed chunk list, and confirm that chunks are split by chapter titles, with each chunk containing complete clause content.
- Check the platform parsing logs, and confirm there are no timeout errors related to
PARSE_FILE_TIMEOUT_SECONDS, proving that parsing time meets the set parameters. - Upload a nuclear power technical report within 1000 MB, and confirm that the upload and parsing processes complete normally with no file size-related errors.
- Adjust the
chunkSizeparameter to 600 characters, upload a long text operation log, and check if the character count after chunking matches the adjusted setting range.
The values provided are common starting points and should be evaluated against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.